Kerite Catalog Introduction - Kriz

Transcription

INTRODUCTION
The Kerite Company's reputation for manufacturing the highest quality electrical
cables is based on testing in the toughest set of environmental conditions that exist - the real
world. While others point to unproven short-term tests, at Kerite we draw upon a century of
experience in formulating, compounding, manufacturing, and evaluating rubber insulated power
cables. The successful track record of our field-proven insulation establishes a unique benchmark
for ongoing research and development activities.
Kerite power cables (5kV thru 138kV) utilize Permashield® as a stress control layer over the
conductor. Permashield's nonconducting properties allow for 100% electrical inspection during the
extrusion process. This assures that there are no voids or breaks which can result in premature
cable failure. This layer also reduces the level of electrical stress throughout the insulation system
and limits charge injection into the primary insulation.
Kerite power cables utilize a specially formulated ethylene propylene rubber (EP) insulation.
Drawing upon our extensive experience in formulating insulations, Kerite achieves those
electrical, mechanical, thermal and chemical properties most relevant to long-term field
performance. Millions of feet of Kerite insulated cables have been installed in all types of
environments with no known failures due to insulation degradation or weakness. This record is
unsurpassed in the cable industry. Unique features and benefits which make Kerite superior to
other commercially available cable insulations include corona immunity; long-term, over-voltage
endurance; long-term moisture resistance; and impulse withstand.
Kerite also has a rigid quality assurance program that, because we formulate and compound our
own insulations, allows us the opportunity to inspect all incoming raw materials to ensure
compliance with exacting Kerite standards. In addition, a sample of every batch of Kerite
insulation is tested and evaluated before it is extruded. Final testing of all finished cables is
performed on the actual shipping reels.
Another unique feature of Kerite Power Cable is our easily removable insulation shield. Our
semiconducting shield can be removed without the use of heat or special tools. This speeds
installations, while greatly reducing the potential for failures caused by cut-throughs and insulation
tearing during removal, a common problem with other types of cables.
Conductors
Kerite power cables can be furnished with either copper or aluminum conductors. For most
applications, the selection of conductor material is one of economics. As the conductor size
increases, the difference in initial cost increasingly favors aluminum. However, because aluminum
has a lower conductivity than copper, an aluminum cable of equal ampacity will be larger. This
may require larger ducts, conduits, ladder racks or trays, thus offsetting the savings resulting from
aluminum conductors. For direct burial or aerial cables preassembled or spun in the field, the
additional size would probably be of little consequence.
Metallic Shield
The standard shielding system for power cables consists of a 5 mil helically wrapped bare copper
tape. At Kerite, this tape is applied with a 20% overlap. Copper tape may be supplemented with
concentric neutral wires when additional fault current carrying capabilities are required. Cupro
Nickel tape is used for nonjacketed aerial cable applications. Where ultimate resistance to
environmental conditions is required, cables can be furnished with an extruded lead sheath and
optional jacket. Another shield option is longitudinally applied corrugated copper tape.
Cable Jacket
Overall jackets fall into one of two basic categories: Thermoplastic or thermoset. The most widely
used thermoplastic jacket, Polyvinyl Chloride (PVC), offers mechanical protection, flame
retardancy, oil resistance and low cost. In underground duct applications Polyethylene (PE) may
be used. It offers increased resistance to moisture and mechanical damage but is not flame
retardant and can not be used on cables with UL MV 105 listing.
Thermosetting jackets offer a wide range of capabilities including, flame retardancy, mechanical
toughness, and flexibility, but at a higher cost than most thermoplastic jackets. Available
thermosetting jacket options include; Kerite FR - Chlorosulfonated Polyethylene (CSPE) with a
long history of utilization in heavy-duty applications such as power plants and process industries.
Kerite Low Smoke Zero Halogen jacket (LSZH) for use where there is heightened concern for
personnel and equipment in case the cable becomes involved in fire.
Mechanical Protection
Aluminum or galvanized steel armor wires, interlocked armor or continuous corrugated weld
armor can be provided for mechanical protection.
Submarine Finishes
For submarine cable applications, aluminum or galvanized steel armor wires can be provided in
single or double layers. These wires can be supplied with individual jackets. A bedding layer and
flooding compound can be added to maximize the protection.
Temperature Rating
The maximum continuous operating conductor temperature for a Kerite insulated power cable is
90°C or 105°C in normal operation, with the emergency operating conductor temperature limit of
130°C or 140°C (See the catalog pages for the specific catalog number). The safe short circuit
conductor temperature is 250°C.
Typical Single Permashield (SPS) Cable Design
For over a century, Kerite power cables have withstood the toughest test of all - the test of time setting the standard by which cable is judged, through actual field experience not just accelerated
laboratory testing. Introduced over 35 years ago, our exclusive Permashield® and EP Insulation
System achieves the highest level of dependability and the lowest total cost of ownership.
Unequaled quality is reflected in every foot of Kerite cable. It is this commitment to superior
performance that has established Kerite as the best cable value - for today, tomorrow and
beyond.
OPTIONS
Conductor
●
●
Copper
-Solid
-Stranded
Aluminum
-Solid
-Stranded
-Filled
Permashield®
Insulation System
Metallic Shield
●
●
5kV - 138kv
Single
Permashield
(SPS)
●
●
●
●
●
●
Copper Tape
-Bare
-Tinned
Zinc Tape
Cupro Nickel
Lead
Copper Tape
plus Concentric
Neutrals
Wire Braid
Longitudinal
Corrogated
Copper Tape
Overall Jacket
●
●
Thermoplastic
-Insulating or
Semi-Conducting
-Polyvinyl
Chloride (PVC)
- Polyethylene
(PE)
-Polyurethane
(TF)
-Polypropylene
(PP)
-Thermoplastic
Elastomer (TPE)
-Low Smoke
Zero Halogen
(TSLS)
Thermosetting
-Kerite FR
(CSPE)
-Low Smoke
Zero Halogen
(TSLS)
OPTIONS
Conductor
●
●
Copper
-Solid
-Stranded
-Stranded,
Filled
Aluminum
-Solid
-Stranded
-Stranded,
Filled
Insulation
●
●
100% Level
133% Level
Copper Concentric
Neutral Wires
Overall Jacket
●
●
●
●
Bare or Tinned
Round or Flat
Full, One-Third
or Special
●
●
●
●
●
●
●
Insulating or
SemiConducting
Marker Stripes
Sequential
Footage
Phase
Identification
NESC Direct
Buried Idenitfier
Polyethylene
(PE)
Polypropylene
(PP)
Chlorinated
Polyethylene
(CPE)
Catalog Number Matrix
Prefix
No. of Condrs
Conductor Size
Conductor Material
Voltage
A
BC
D
EF
A = Alum
C = Copper
F = Filled Alum
G = Filled Copper
H = Compact Filled Alum
S = Solid Alum
T = Solid Copper
X = Compact Copper
Y = Compact Filled Copper
Z = Compact Alum
00 = 600V
02 = 2kV
05 = 5kV
08 = 8kV
15 = 15kV
25 = 25kV
35 = 35kV
46 = 46kV
69 = 69kV
95 = 115kV
98 = 138kV
PR = Precipitator
1
2
3
4
5
6
7
=
=
=
=
=
=
=
1/C
2/C
3/C
4/C
5/C
6/C
7/C
14
12
10
08
06
04
02
01
11
21
31
41
25
35
50
75
90
95
97
99
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
=
14 AWG
12 AWG
10 AWG
8 AWG
6 AWG
4 AWG
2 AWG
1 AWG
1/0 AWG
2/0 AWG
3/0 AWG
4/0 AWG
250 kcmil
350 kcmil
500 kcmil
750 kcmil
1000 kcmil
1500 kcmil
1750 kcmil
2000 kcmil
Catalog Number Matrix
Suffix
Insulation
Level
Shielding
Individual Jacket
Assembly
Outer
Assembly
Finish
G
H
I
J
K
0 = None
1 = Black LLDPE
2 = Black PE & Red
Stripes
4 = PVC
5 = Black PVC & Red
Stripes
6 = FR (CSPE)
7 = Semicon PE
8 = Semicon PE &
Red Stripes
9 = All Others
B = TF Jacket
Polyurethane
E = Polypro
F= TPR
G = TSLS Thermoset
Low Smoke
H = TPLS
Thermoplastic Low
Smoke
J = CPE
Thermoplastic
Clorinated PE
0 = None
1 = Parallel
2 = Twist
3 = Twist with
Neutrals
4 = Cabled
5 = Cabled with
Neutrals
6 = Parallel
W/Neutrals
7 = All others
9 = Twist with
Messenger
0 = None
1 = Black PE
2 = PVC
3 = FR
4 = Galv ST
Int Arm
5 = Galv ST
Int Arm, PVC
6 = Galv ST
Armor Wires
7 = Galv St
Armor Wires,
Sub Finish
8 = Galv ST
Armor Wires,
Individual PE
Jackets
9 = All Other
A = Al Int Arm
B = Al Int
Arm, PVC
C = Cable in
Conduit
G = Galv St
Arm Wires,
Overall PE
0 = No PS
0 = Nonshielded
1 = Full Bare
1 = 90°C SPS
Conc
100%
2 = All other Bare
Conc
3 = 90°C SPS
3 = 1/3 Bare
133%
Conc
4 = Cu Tape
9 = 90°C SPS
5 = Wire Braid
100% System
6 = Cupro Tape
A = 105°C SPS 7 = Lead
8 = Armor Wires
100%
9 = All Others
C = 105°C SPS A = 1/3 Tinned
Conc
133%
B = Full Tinned
I = 105°C SPS Conc
100% System C = All Other
Tinned Conc
D = Tinned Cu
Tape
E = Bare Cu Tape
& Conc
F = Tinned CU
Tape & Conc
G = Zinc Tape
H = Bare Flat
Straps
J = Tinned Flat
Straps
K = 10 mil BCT
L = 10 mil TCT
ISO 9002 registered (Since 1995)
POWER CABLE - KI-600 TYPE
EPR Insulation / CSPE Thermoset Jacket
90°C, 600 Volt, NEC TYPE RHH, RHW-2 or USE-2 - UL
Listed
CONSTRUCTION
-Copper Class "B" Conductors per ASTM B-3, B-8 & B-33
-Heat and Moisture Resistant Ethylene Polypropylene
Rubber Insulation(EPR)
-Black Heavy Duty Chlorosulfonated Polyethylene Jacket
FEATURES
-Thermoset insulation and jacket provide excellent thermal stability
-Flame Retardant
-Flexible for installation ease
PERFORMANCE STANDARDS
-Insulation in accordance with ICEA S-95-658 Class E-1I & E-2
-Jacket in accordance with ICEA S 95-658 for heavy-duty CSPE
-UL Listed as Types RHH, RHW-2 or USE-2 (size 14AWG not USE-2)
-UL Listed for "CT Use" on sizes 1/0 and larger
-Size 1/0 and larger pass ICEA 70,000BTU and UL 1581 vertical tray flame tests
-Cable pases UL VW-1 vertical flame test
-Rated 90C for normal operation, wet or dry locations, 130C emergency overload conditions, 250C short
circuit conditions
SINGLE CONDUCTOR
CATALOG NUMBER SUFFIX 00600
Insulation Thickness
Jacket
Nominal OD
Approx.
Catalog Prefix
Conductor Size
(AWG/kcmil)
# of Strands
Mils
(mm)
114C00-
14
7
30
0.76
15
0.18 4.57
25
112C00-
12
7
30
0.76
15
0.20 5.08
35
110C00-
10
7
30
0.76
15
0.22 5.59
50
108C00-
8
7
45
1.14
15
0.28 7.11
80
106C00-
6
7
45
1.14
30
0.34 8.64
120
104C00-
4
7
45
1.14
30
0.39 9.91
180
102C00-
2
7
45
1.14
30
0.44 11.18
260
101C00-
1
19
55
1.4
45
0.53 13.46
350
111C00-
1/0
19
55
1.4
45
0.57 14.48
425
121C00-
2/0
19
55
1.4
45
0.62 15.75
520
131C00-
3/0
19
55
1.4
45
0.67 17.02
635
141C00-
4/0
19
55
1.4
45
0.72 18.29
780
125C00-
250
37
65
1.65
65
0.83 21.08
955
135C00-
350
37
65
1.65
65
0.94 23.88
1290
150C00-
500
37
65
1.65
65
1.07 27.18
1790
175C00-
750
61
80
2.03
65
1.28 32.51
2640
190C00-
1000
61
80
2.03
65
1.43 36.32
3475
Thickness Mils (Inch) (mm)
Net Weight
(lbs/K')
FIVE MINUTE AC FINAL TEST VOLTAGES
Conductor
Single
Size
Conductor
(AWG/
AC
kcmil)
(kV)
#6 - #2
9.0
#1 - #4/0
10.0
250-500
13.0
750-1000
14.5
1250
16.0
1500-2000
19.0
††Conductor to Conductor
Multi††
Conductor
AC
(kV)
11.5
14.0
16.5
20.0
-
CATALOG NUMBER EXAMPLE: 106C00-00600 = #6 AWG (7) CU 600V, 45 mil Kerite, 30 mil Kerite FR Jacket.
†For diameter over the insulation, refer to Three Conductor PVC Jacket table above.
POWER CABLES - TYPE MV-90
5kV NON-SHIELDED (SPS) 90°C Rating
CONDUCTOR - Class "B" Copper Strand (Aluminum
Conductors Available)
CONDUCTOR SHIELD - Unique Permashield® System
INSULATION - Exclusive Corona-Immune Insulation
JACKET - Thermosetting Kerite FR (CSPE)
SINGLE CONDUCTOR
CATALOG NUMBER SUFFIX
30600 (MV90)
CATALOG
Size
No.
Insulation
O.D.
Jacket
Cable
Over
NO.
(AWG/
of
Thickness
Insul.
Thickness
O.D.
Weight
PREFIX
kcmil)
Str.
(Mils)
(Inches)
(Mils)
(Inches)
(Lbs./Kft)
106C05-
6
7
125
0.49
80
0.67
269
104C05-
4
7
125
0.54
80
0.69
339
102C05-
2
7
125
0.60
80
0.77
442
101C05-
1
19
125
0.64
80
0.81
512
111C05-
1/0
19
125
0.68
80
0.85
596
121C05-
2/0
19
125
0.72
80
0.90
702
131C05-
3/0
19
125
0.77
95
0.98
863
141C05-
4/0
19
125
0.83
95
1.04
1026
125C05-
250
37
140
0.92
110
1.16
1240
135C05-
350
37
140
1.02
110
1.26
1606
150C05-
500
37
140
1.15
110
1.39
2141
175C05-
750
61
155
1.37
125
1.66
3122
190C05-
1000
61
155
1.53
125
1.81
3979
192C05-
1250
91
170
1.71
140
2.01
4964
195C05-
1500
91
170
1.83
140
2.13
5818
197C05-
1750
127
170
1.94
155
2.27
6745
199C05-
2000
127
170
2.04
155
2.38
7580
FIVE MINUTE AC TEST VOLTAGES
Conductor Size
(AWG / kcmil)
AC (kV)
#6 - #2/0
33
#3/0 - #4/0
35
Single
250 - 500
39
Conductor
750 - 1000
44
1250 - 1500
48
1750 - 2000
50
ALL
23
Multi Conductor
CATALOG NUMBER EXAMPLE:
106C05-30600 = #6 AWG (7) CU 5kV, SPS 125 mil Kerite,
80 mil Kerite FR Jacket.
Note: Underwriters Laboratories additional labeling for cable tray (CT) and oil resistance is also available as applicable.
JACKET - Overall PVC (Black-STD, Colors Available;
Optional Individual Jackets available)
THREE CONDUCTOR OVERALL PVC JACKET
30052 (MV90)
115 Mil Insulation
CATALOG
Size
No.
Ground
O.D.
Overall Jacket
Cable
Over
NO.
(AWG/
of
Conductor
Insul.
Thickness
O.D.
Weight
PREFIX
kcmil)
Str.
(No.-AWG)
(Inches)
(Mils)
306C05-
6
7
1-#6
0.47
80
1.20
818
304C05-
4
7
1-#6
0.52
80
1.30
1035
302C05-
2
7
1-#6
0.58
80
1.43
1357
301C05-
1
19
1-#4
0.62
80
1.51
1617
311C05-
1/0
19
1-#4
0.66
80
1.59
1882
321C05-
2/0
19
1-#4
0.70
80
1.69
2212
331C05-
3/0
19
2-#6
0.75
110
1.86
2749
341C05-
4/0
19
2-#6
0.81
110
1.98
3261
325C05-
250
37
2-#6
0.86
110
2.11
3726
335C05-
350
37
1-#2
0.97
110
2.34
4904
350C05-
500
37
1-#1
1.10
110
2.62
6612
375C05-
750
61
1-#1/10
1.29
140
3.13
9639
390C05-
1000
61
1-#1/10
1.45
140
3.45
12328
(Inches) (Lbs./Kft)
Optional Individual Jackets available)
THREE CONDUCTOR GALVANIZED STEEL
INTERLOCKED ARMOR WITH
OVERALL PVC JACKET (OPTIONAL CONTINOUS CORROGNATED WELDED ALUMINUM ARMOR - CCW
AVAILABLE)
30055 (MV90)
115 Mil Insulation†
CATALOG
Size
No.
Ground
O.D.
Overall Jacket
Cable
Over
NO.
(AWG/
of
Conductor
Armor
Thickness
O.D.
Weight
PREFIX
kcmil)
Str.
(No.-AWG)
(Inches)
(Mils)
(Inches)
(Lbs./Kft)
306C05-
6
7
1-#6
1.29
50
1.40
1195
304C05-
4
7
1-#6
1.39
50
1.50
1446
302C05-
2
7
1-#6
1.51
50
1.62
1811
301C05-
1
19
1-#4
1.60
60
1.73
2135
311C05-
1/0
19
1-#4
1.68
60
1.81
2430
321C05-
2/0
19
1-#4
1.78
60
1.91
2951
331C05-
3/0
19
2-#6
1.89
60
2.02
3439
341C05-
4/0
19
2-#6
2.01
60
2.14
3999
325C05-
250
37
2-#6
2.13
60
2.26
4514
335C05-
350
37
1-#2
2.35
75
2.52
5854
350C05-
500
37
1-#1
2.63
75
2.79
7682
375C05-
750
61
1-#1/0
3.08
75
3.24
10735
390C05-
1000
61
1-#1/0
3.40
85
3.59
13622
Note: Underwriters Laboratories additional labeling for cable tray (CT), sunlight and oil resistance is also available as
applicable
POWER CABLES - TYPE MV 105
5kV SHIELDED (SPS) 105°C Rating
INSULATION SHIELD - Free Stripping Semiconducting
Layer
METALLIC SHIELD - 5 mil Copper Tape, 20%
Overlap (Optional Longitudinal Corragated Copper Shield
Available)
JACKET - PVC (Thermosetting Kerite FR Available)
SINGLE CONDUCTOR
C4400
115 Mil Insulation
CATALOG
Size
No.
O.D.
Jacket
Cable
Over
NO.
(AWG/
of
Insul.
Thickness
O.D.
Weight
PREFIX
kcmil)
Str.
(Inches)
(Mils)
(Inches)
(Lbs./Kft)
106C05-
6
7
0.47
60
0.69
312
104C05-
4
7
0.52
60
0.74
384
102C05-
2
7
0.58
60
0.80
492
101C05-
1
19
0.62
60
0.84
565
111C05-
1/0
19
0.66
60
0.89
691
121C05-
2/0
19
0.70
80
0.96
801
131C05-
3/0
19
0.75
80
1.01
936
141C05-
4/0
19
0.81
80
1.07
1104
125C05-
250
37
0.86
80
1.13
1257
135C05-
350
37
0.97
80
1.23
1625
150C05-
500
37
1.10
80
1.38
2185
175C05-
750
61
1.29
80
1.57
3077
190C05-
1000
61
1.45
80
1.73
3930
192C05-
1250
91
1.64
110
2.02
5058
195C05-
1500
91
1.76
110
2.14
5917
197C05-
1750
127
1.87
110
2.25
6777
199C05-
2000
127
1.98
110
2.36
7615
†† 140 Mil Insulation for 1250 through 2000 kcmil.
Conductor Size
(AWG / kcmil)
AC (kV)
#6 - 1000
23
1250 - 2000
28
106C05-C4400 = #6 AWG (7) CU 5kV, SPS 115 mil Kerite Extruded Semicon 5
mil CU Tape, 60 mil PVC Jacket.
CONDUCTOR SHIELD - Unique Permashield System
Layer
Available)
Optional Individual Jackets Available)
C4052
115 Mil Insulation
CATALOG
Size
No.
Ground
O.D.
Overall Jacket
Cable
Over
NO.
(AWG/
of
Conductor
Insul.
Thickness
O.D.
Weight
PREFIX
kcmil)
Str.
(No.-AWG)
(Inches)
(Mils)
(Inches)
(Lbs./Kft)
306C05-
6
7
1 - #6
0.47
80
1.40
1047
304C05-
4
7
1 - #6
0.52
80
1.50
1285
302C05-
2
7
1 - #6
0.58
80
1.63
1649
301C05-
1
19
1 - #4
0.62
80
1.71
1884
311C05-
1/0
19
1 - #4
0.66
110
1.86
2294
321C05-
2/0
19
1 - #4
0.70
110
1.96
2655
331C05-
3/0
19
2 - #6
0.75
110
2.07
3106
341C05-
4/0
19
2 - #6
0.81
110
2.19
3648
325C05-
250
37
2 - #6
0.86
110
2.31
4149
335C05-
350
37
1 - #2
0.97
110
2.53
5340
350C05-
500
37
1 - #1
1.10
140
2.92
7363
375C05-
750
61
1 - #1/0
1.29
140
3.33
10332
390C05-
1000
61
1 - #1/0
1.45
140
3.68
13088
CONDUCTOR SHIELD - Unique Permashield System
Layer
METALLIC SHIELD - 5 mil Copper Tape, 20% Overlap
THREE CONDUCTOR OVERALL PVC JACKET GALVANIZED STEEL INTERLOCKED ARMOR
(OPTIONAL CONTINOUS CORROGNATED WELDED ALUMINUM ARMOR - CCW AVAILABLE)
C4055
115 Mil Insulation†
CATALOG
Size
No.
Ground
O.D.
Overall Jacket
Cable
Over
NO.
(AWG/
of
Conductor
Armor
Thickness
O.D.
Weight
PREFIX
kcmil)
Str.
(No.-AWG)
(Inches)
(Mils)
(Inches)
(Lbs./Kft)
306C05-
6
7
1 - #6
1.48
50
1.59
1438
304C05-
4
7
1 - #6
1.58
50
1.69
1706
302C05-
2
7
1 - #6
1.70
60
1.84
2147
301C05-
1
19
1 - #4
1.79
60
1.92
2408
311C05-
1/0
19
1 - #4
1.87
60
2.00
2896
321C05-
2/0
19
1 - #4
1.97
60
2.10
3291
331C05-
3/0
19
2 - #6
2.08
60
2.21
3781
341C05-
4/0
19
2 - #6
2.20
60
2.33
4367
325C05-
250
37
2 - #6
2.32
60
2.45
4912
335C05-
350
37
1 - #2
2.54
75
2.71
6266
350C05-
500
37
1 - #1
2.86
75
3.03
8232
375C05-
750
61
1 - #1/0
3.27
85
3.46
11408
390C05-
1000
61
1 - #1/0
3.62
85
3.81
14284
POWER CABLE - TYPE MV-105
8kV SHIELDED (SPS) - 105° Rating
Layer
(Optional Longitudinal Corragated Copper Shield Available)
SINGLE CONDUCTOR
CATALOG
Size
No.
A4400 (MV105)
C4400 (MV105)
115 Mil Insulation(100%)††
140 Mil Insulation (133%)††
O.D.
Jacket
Cable
Over
NO.
PREFIX
(AWG/
of
Insul.
kcmil) Str. (Inches)
O.D.
Jacket
Cable
Over
Thickness
O.D.
Weight
Insul.
Thickness
O.D.
Weight
(Mils)
(Inches)
(Lbs./Kft)
(Inches)
(Mils)
(Inches)
(Lbs./Kft)
106C08-
6
7
0.47
60
0.69
312
0.52
60
0.74
348
104C08-
4
7
0.52
60
0.74
384
0.57
60
0.79
423
102C08-
2
7
0.58
60
0.80
492
0.63
60
0.85
533
101C08-
1
19
0.62
80
0.84
565
0.67
80
0.93
645
111C08-
1/0
19
0.66
80
0.92
690
0.71
80
0.97
736
121C08-
2/0
19
0.70
80
0.96
801
0.75
80
1.02
849
131C08-
3/0
19
0.75
80
1.01
936
0.80
80
1.07
987
141C08-
4/0
19
0.81
80
1.07
1104
0.86
80
1.12
1157
125C08-
250
37
0.86
80
1.13
1257
0.92
80
1.18
1313
135C08-
350
37
0.97
80
1.23
1625
1.02
80
1.28
1686
150C08-
500
37
1.10
80
1.38
2185
1.15
80
1.43
2252
175C08-
750
61
1.29
80
1.57
3077
1.34
80
1.62
3153
190C08-
1000
61
1.45
80
1.73
3930
1.50
110
1.85
4128
192C08-
1250
91
1.72
110
2.15
5200
1.72
110
2.15
5200
195C08-
1500
91
1.84
110
2.22
6068
1.84
110
2.22
6068
197C08-
1750
127
1.95
110
2.33
6935
1.95
110
2.33
6935
199C08-
2000
127
2.05
110
2.48
7780
2.05
110
2.48
7780
††175 Mil Insulation for 1250 through 2000 kcmil.
Conductor Size
(AWG / kcmil)
Insulation Level
AC (kV)
#6-1000
100%
23
1250-2000
100%
35
#6-1000
133%
28
1250-2000
133%
35
106C08-C4400 = #6 AWG (7) CU 8kV, SPS 140 mil Kerite Extruded
Semicon, 5 mil CU Tape, 60 mil PVC Jacket.
Layer
Optional individual Jackets Available)
CATALOG Size No.
NO.
PREFIX
Ground
(AWG/ of Conductor
A4052
C4052
115 Mil Insulation (100%)
O.D. Over
Insul.
kcmil) Str. (No.-AWG) (Inches)
Overall Jacket
Thickness
(Mils)
O.D.
Cable
O.D. Over
Weight
Insul.
(Inches) (Lbs./Kft) (Inches)
Overall Jacket
Thickness
(Mils)
O.D.
Cable
Weight
(Inches) (Lbs./Kft)
306C08-
6
7
1 - #6
0.47
80
1.40
1047
0.52
80
1.51
1170
304C08-
4
7
1 - #6
0.52
80
1.50
1285
0.57
80
1.61
1433
302C08-
2
7
1 - #6
0.58
80
1.63
1649
0.63
80
1.74
1788
301C08-
1
19
1 - #4
0.62
80
1.71
1884
0.67
110
1.89
2156
311C08-
1/0
19
1 - #4
0.66
110
1.86
2299
0.71
110
1.97
2456
321C08-
2/0
19
1 - #4
0.70
110
1.96
2655
0.75
110
2.07
2836
331C08-
3/0
19
2 - #6
0.75
110
2.07
3106
0.80
110
2.18
3288
341C08-
4/0
19
2 - #6
0.81
110
2.19
3648
0.86
110
2.30
3844
325C08-
250
37
2 - #6
0.86
110
2.31
4149
0.92
110
2.42
4357
335C08-
350
37
1 - #2
0.97
110
2.53
5340
1.02
110
2.64
5576
350C08-
500
37
1 - #1
1.10
140
2.92
7363
1.15
140
3.03
7618
375C08-
750
61
1 - #1/0
1.29
140
3.33
10333
1.34
140
3.44
10592
390C08-
1000
61
1 - #1/0
1.45
140
3.68
13088
1.50
140
3.79
13435
Layer
OVERALL PVC JACKET (OPTIONAL CONTINOUS CORROGNATED WELDED ALUMINUM ARMOR - CCW
AVAILABLE)
CATALOG Size No.
Ground
A4055
C4055
115 Mil Insulation (100%)†
O.D.
Overall Jacket
Cable
PREFIX
(AWG/ of Conductor Armor Thickness
Overall Jacket
Cable
Over
Over
NO.
O.D.
(Mils)
O.D.
Weight
Armor Thickness
O.D.
Weight
(Mils)
(Inches)
(Lbs./Kft)
306C08-
6
7
1 - #6
1.36
50
1.50
1470
1.59
60
1.72
1630
304C08-
4
7
1 - #6
1.47
50
1.60
1747
1.69
60
1.82
1926
302C08-
2
7
1 - #6
1.59
60
1.77
2219
1.82
60
1.95
2322
301C08-
1
19
1 - #4
1.68
60
1.86
2498
1.90
60
2.03
2768
311C08-
1/0
19
1 - #4
1.76
60
1.94
2819
1.98
60
2.12
3098
321C08-
2/0
19
1 - #4
1.86
60
2.04
3215
2.08
60
2.21
3513
331C08-
3/0
19
2 - #6
1.97
60
2.14
3694
2.19
60
2.32
4003
341C08-
4/0
19
2 - #6
2.09
60
2.26
4281
2.31
60
2.44
4602
325C08-
250
37
2 - #6
2.20
60
2.38
4823
2.43
75
2.60
5241
335C08-
350
37
1 - #2
2.42
75
2.60
6097
2.65
75
2.82
6546
350C08-
500
37
1 - #1
2.70
75
2.91
8033
2.97
75
3.14
8525
375C08-
750
61
1 - #1/0
3.10
85
3.34
11171
3.38
85
3.57
11707
390C08-
1000
61
1 - #1/0
3.42
85
3.67
14088
3.73
85
3.92
14671
15kV SHIELDED (SPS) - 105° C Rating
Layer
Overlap (Optional Longitudinal Corrugated Copper Shield
Available)
SINGLE CONDUCTOR
CATALOG
Size
NO.
(AWG/
PREFIX
A4400
C4400
175 Mil Insulation (100%)††
No. O.D. Over
of
kcmil) Str.
Jacket
Insul.
Thickness
(Inches)
(Mils)
O.D.
Cable
O.D. Over
Weight
Insul.
Thickness
(Inches)
(Mils)
(Inches) (Lbs./Kft)
Jacket
Cable
O.D.
Weight
(Inches) (Lbs./Kft)
102C15-
2
7
0.71
80
0.97
636
0.80
80
1.06
725
101C15-
1
19
0.74
80
1.01
713
0.84
80
1.10
805
111C15-
1/0
19
0.78
80
1.05
806
0.88
80
1.14
902
121C15-
2/0
19
0.83
80
1.09
922
0.92
80
1.19
1021
131C15-
3/0
19
0.88
80
1.14
1062
0.97
80
1.24
1166
141C15-
4/0
19
0.93
80
1.20
1236
1.03
80
1.29
1344
125C15-
250
37
0.99
80
1.26
1393
1.09
80
1.37
1528
135C15-
350
37
1.09
80
1.38
1794
1.19
80
1.47
1916
150C15-
500
37
1.22
80
1.51
2346
1.32
80
1.60
2478
175C15-
750
61
1.43
80
1.71
3267
1.52
110
1.87
3533
190C15-
1000
61
1.58
110
1.96
4309
1.67
110
2.05
4479
192C15-
1250
91
1.82
110
2.20
5385
1.82
110
2.20
5385
195C15-
1500
91
1.94
110
2.32
6262
1.94
110
2.32
6262
197C15-
1750
127
2.05
110
2.43
7130
2.05
110
2.43
7130
199C15-
2000
127
2.15
110
2.53
7992
2.15
110
2.53
7992
††220 Mil Insulation for 1250 kcmil and larger.
Conductor Size
(AWG/ kcmil)
Insulation Level
AC (kV)
#2-1000
100%
35
1250-2000
100%
44
ALL
133%
44
102C15-C4400 = #2 AWG (7) CU 15kV, SPS 220 mil Kerite Extruded
Layer
Available)
A4052
C4052
O.D.
CATALOG Size No.
NO.
PREFIX
Ground
(AWG/ of Conductor
O.D. Over
Insul.
Overall Jacket
Thickness
(Mils)
O.D.
Cable
O.D. Over
Weight
Insul.
Overall Jacket
Thickness
(Mils)
O.D.
Cable
Weight
(Inches) (Lbs./Kft)
302C15-
2
7
1 - #6
0.71
110
1.96
2215
0.80
110
2.16
2542
301C15-
1
19
1 - #4
0.74
110
2.04
2516
0.84
110
2.24
2856
311C15-
1/0
19
1 - #4
0.78
110
2.13
2823
0.88
110
2.34
3182
321C15-
2/0
19
1 - #4
0.83
110
2.22
3202
0.92
110
2.43
3576
331C15-
3/0
19
2 - #6
0.88
110
2.34
3701
0.97
110
2.54
4084
341C15-
4/0
19
2 - #6
0.93
110
2.46
4266
1.03
110
2.66
4667
325C15-
250
37
2 - #6
0.99
110
2.58
4787
1.09
110
2.83
5291
335C15-
350
37
1 - #2
1.09
110
2.85
6144
1.19
140
3.12
6794
350C15-
500
37
1 - #1
1.22
140
3.19
8182
1.32
140
3.39
8691
375C15-
750
61
1 - #1/0
1.43
140
3.64
11281
1.52
140
3.84
11856
390C15-
1000
61
1 - #1/0
1.58
140
4.03
14306
1.67
140
4.23
14937
Layer
OVERALL PVC JACKET (OPTIONAL CONTINOUS CORRUGATED WELDED ALUMINUM ARMOR - CCW
AVAILABLE)
CATALOG Size No.
NO.
PREFIX
Ground
(AWG/ of Conductor
A4055
C4055
O.D. Over
Armor
Overall Jacket
Thickness
(Mils)
O.D.
Cable
O.D. Over
Weight
Armor
Overall Jacket
Thickness
(Mils)
O.D.
Cable
Weight
(Inches) (Lbs./Kft)
302C15-
2
7
1 - #6
1.98
60
2.11
2881
2.18
60
2.31
3284
301C15-
1
19
1 - #4
2.06
60
2.19
3214
2.27
60
2.40
3629
311C15-
1/0
19
1 - #4
2.15
60
2.28
3552
2.35
60
2.48
3979
321C15-
2/0
19
1 - #4
2.24
60
2.38
3967
2.45
75
2.61
4490
331C15-
3/0
19
2 - #6
2.35
75
2.52
4577
2.55
75
2.72
5041
341C15-
4/0
19
2 - #6
2.47
75
2.64
5191
2.67
75
2.84
5672
325C15-
250
37
2 - #6
2.60
75
2.76
5761
2.84
75
3.01
6363
335C15-
350
37
1 - #2
2.86
75
3.03
7224
3.06
75
3.23
7761
350C15-
500
37
1 - #1
3.14
85
3.33
9244
3.34
85
3.53
9826
375C15-
750
61
1 - #1/0
3.58
85
3.77
12503
3.79
85
3.97
13150
390C15-
1000
61
1 - #1/0
3.97
85
4.16
15667
4.17
85
4.36
16370
† For diameter over the insulation, refer to Three Conductor PVC Jacket table above.
applicable.
25kV SHIELDED SPS
Layer
(Optional Longitudinal Corrugated Copper Shield Available)
SINGLE CONDUCTOR
CATALOG
Size
NO.
(AWG/
PREFIX
A4400
C4400 ***
No. O.D. Over
of
kcmil) Str.
Jacket
Insul.
Thickness
(Inches)
(Mils)
O.D.
Cable
O.D. Over
Weight
Insul.
Thickness
(Inches)
(Mils)
(Inches) (Lbs./Kft)
Cable
Jacket
O.D.
Weight
(Inches) (Lbs./Kft)
101C25-
1
19
0.93
80
1.19
899
1.06
80
1.32
1049
111C25-
1/0
19
0.97
80
1.23
998
1.10
80
1.38
1176
121C25-
2/0
19
1.01
80
1.27
1121
1.14
80
1.42
1304
131C25-
3/0
19
1.06
80
1.34
1292
1.19
80
1.47
1459
141C25-
4/0
19
1.12
80
1.40
1475
1.25
80
1.53
1649
125C25-
250
37
1.17
80
1.46
1642
1.30
80
1.59
1822
135C25-
350
37
1.28
80
1.56
2038
1.41
80
1.69
2229
150C25-
500
37
1.41
80
1.69
2610
1.54
110
1.89
2933
175C25-
750
61
1.61
110
1.99
3734
1.74
110
2.12
3975
190C25-
1000
61
1.76
110
2.14
4645
1.89
110
2.27
4903
192C25-
1250
91
1.91
110
2.29
5562
2.04
110
2.42
5836
195C25-
1500
91
2.03
110
2.41
6449
2.16
110
2.54
6736
197C25-
1750
127
2.14
110
2.52
7324
2.27
110
2.65
7624
199C25-
2000
127
2.24
110
2.62
8195
2.37
110
2.75
8506
Insulation
AC
Level
(kV)
100%
52
133%
64
101C25-A4400 = #1 AWG (19) CU 25kV, SPS 260 mil Kerite Extruded
Note:Underwriters Laboratories additional labeling for cable tray (CT), sunlight resistance and oil resistance is also available.
*** For 133% insulation level, a 345 mil (35kV) thickness must be used.
25kV SHIELDED SPS
Layer
CATALOG Size No.
NO.
PREFIX
Ground
(AWG/ of Conductor
A4052
C4052 ***
O.D. Over
Insul.
Overall Jacket
Thickness
(Mils)
O.D.
Cable
O.D. Over
Weight
Insul.
Overall Jacket
Thickness
(Mils)
O.D.
Cable
Weight
(Inches) (Lbs./Kft)
301C25-
1
19
1 - #4
0.93
110
2.44
3209
1.06
110
2.72
3767
311C25-
1/0
19
1 - #4
0.97
110
2.53
3540
1.10
110
2.85
4201
321C25-
2/0
19
1 - #4
1.01
110
2.62
3946
1.14
140
3.01
4818
331C25-
3/0
19
2 - #6
1.06\
110
2.77
4553
1.19
140
3.12
5372
341C25-
4/0
19
2 - #6
1.12
140
2.96
5341
1.25
140
3.24
6007
325C25-
250
37
2 - #6
1.17
140
3.08
5907
1.30
140
3.36
6598
335C25-
350
37
1 - #2
1.28
140
3.31
7260
1.41
140
3.59
7996
350C25-
500
37
1 - #1
1.41
140
3.58
9195
1.54
140
3.86
9987
375C25-
750
61
1 - #1/0
1.61
140
4.09
12604
1.74
140
4.37
13498
390C25-
1000
61
1 - #1/0
1.76
140
4.42
15554
25kV SHIELDED SPS
Layer
JACKET - Overall PVC (Black-STD, Colors
Available;Optional individual Jackets Available)
OVERALL PVC JACKET
CATALOG Size No.
NO.
PREFIX
Ground
(AWG/ of Conductor
A4055
C4055 ***
O.D. Over
Armor
Overall Jacket
Thickness
(Mils)
O.D.
Cable
O.D. Over
Weight
Armor
Overall Jacket
Thickness
(Mils)
O.D.
Cable
Weight
(Inches) (Lbs./Kft)
301C25-
1
19
1 - #4
2.46
75
2.62
4127
2.74
75
2.90
4797
311C25-
1/0
19
1 - #4
2.54
75
2.70
4491
2.86
75
3.03
5282
321C25-
2/0
19
1 - #4
2.64
75
2.80
4936
2.96
75
3.12
5750
331C25-
3/0
19
2 - #6
2.79
75
2.95
5604
3.07
75
3.23
6340
341C25-
4/0
19
2 - #6
2.91
75
3.07
6255
3.19
85
3.37
7086
325C25-
250
37
2 - #6
3.03
75
3.20
6863
3.31
85
3.50
7722
335C25-
350
37
1 - #2
3.25
85
3.44
8363
3.53
85
3.72
9199
350C25-
500
37
1 - #1
3.53
85
3.72
10398
3.81
85
4.00
11290
375C25-
750
61
1 - #1/0
4.04
85
4.23
13990
35kV SHIELDED (SPS) - 105°C Rating
Layer
JACKET - PVC
SINGLE CONDUCTOR
CATALOG
Size
NO.
(AWG/
PREFIX
A4400
C4400
Jacket
No. O.D. Over
of
kcmil) Str.
Insul.
Thickness
(Inches)
(Mils)
O.D.
Jacket
Cable
O.D. Over
Weight
Insul.
Thickness
(Inches)
(Mils)
(Inches) (Lbs./Kft)
Cable
O.D.
Weight
(Inches) (Lbs./Kft)
111C35-
1/0
19
1.15
80
1.44
1232
1.32
80
1.60
1456
121C35-
2/0
19
1.20
80
1.48
1362
1.36
80
1.65
1592
131C35-
3/0
19
1.25
80
1.53
1518
1.41
80
1.70
1755
141C35-
4/0
19
1.30
80
1.59
1709
1.47
80
1.75
1954
125C35-
250
37
1.36
80
1.64
1884
1.53
110
1.88
2253
135C35-
350
37
1.46
80
1.75
2295
1.63
110
2.01
2733
150C35-
500
37
1.59
110
1.97
3053
1.76
110
2.14
3353
175C35-
750
61
1.80
110
2.18
4055
1.96
110
2.34
4383
190C35-
1000
61
1.95
110
2.33
4986
2.11
110
2.49
5336
192C35-
1250
91
2.09\
110
2.47
5924
2.26
110
2.64
6293
195C35-
1500
91
2.21
110
2.59
6827
2.38
110
2.76
7213
197C35-
1750
127
2.32
110
2.70
7719
2.49
140
2.94
8303
199C35-
2000
127
2.43
110
2.81
8604
2.59
140
3.04
9209
Insulation Level
AC (kV)
100%
69
133%
84
111C35-A4400 = #1/0 AWG (19) CU 35kV, SPS 345 mil Kerite Extruded
Layer
CATALOG Size No.
NO.
PREFIX
Ground
(AWG/ of Conductor
A4052
C4052
O.D. Over
Insul.
Overall Jacket
Thickness
(Mils)
O.D.
Cable
O.D. Over
Weight
Insul.
Overall Jacket
Thickness
(Mils)
O.D.
Cable
Weight
(Inches) (Lbs./Kft)
311C35-
1/0
19
1 - #4
1.15
140
3.04
4611
1.32
140
3.39
5474
321C35-
2/0
19
1 - #4
1.20
140
3.13
5052
1.36
140
3.49
5940
331C35-
3/0
19
2 - #6
1.25
140
3.24
5612
1.41
140
3.60
6527
341C35-
4/0
19
2 - #6
1.30
140
3.36
6254
1.47
140
3.72
7199
325C35-
250
37
2 - #6
1.36
140
3.48
6853
1.53
140
3.84
7829
335C35-
350
37
1 - #2
1.46
140
3.71
8264
1.63
140
4.13
9480
350C35-
500
37
1 - #1
1.59
140
4.05
10453
1.76
140
4.41
11570
375C35-
750
61
1 - #1/0
1.80
140
4.50
13813
Layer
OVERALL PVC JACKET
CATALOG Size No.
NO.
PREFIX
Ground
(AWG/ of Conductor
A4055
C4055
O.D. Over
Armor
Overall Jacket
Thickness
(Mils)
O.D.
Cable
O.D. Over
Weight
Armor
Overall Jacket
Thickness
(Mils)
O.D.
Cable
Weight
(Inches) (Lbs./Kft)
311C35-
1/0
19
1 - #4
2.98
75
3.15
5551
3.34
85
3.53
6609
321C35-
2/0
19
1 - #4
3.08
75
3.25
6025
3.44
85
3.62
7109
331C35-
3/0
19
2 - #6
3.19
85
3.37
6692
3.55
85
3.73
7735
341C35-
4/0
19
2 - #6
3.31
85
3.50
7377
3.67
85
3.85
8450
325C35-
250
37
2 - #6
3.43
85
3.62
8020
3.79
85
3.98
9124
335C35-
350
37
1 - #2
3.65
85
3.84
9510
4.08
85
4.26
10878
350C35-
500
37
1 - #1
4.00
85
4.18
11822
applicable.
COMPACT POWER CABLES
Single or Three-Conductor, Single Permashield® (SPS) - 105°C RATING
(For replacement of paper insulated lead covered cables)
Kerite single-conductor and three-conductor compact round power cables are designed to be a direct
replacement for Paper-Insulated Lead Covered (PILC) cables. Like all Kerite cable our PILC
replacement product offers excellent reliability and a proven track-record. They are specifically
designed for compatibility with 3, 3-1/2, 4 and 5-inch duct systems installed in the early 1900's.
Both Kerite single-conductor and three-conductor cable constructions start with a compact-round
conductor that results in an eight to ten percent diameter reduction over full round conductors. The
"Insulation System" is comprised of the time-proven Permashield®, conductor stress control layer,
and our exclusive Kerite EP discharge resistant primary insulation, extruded to exacting tolerances.
Kerite’s free-stripping insulation shield offers labor savings opportunities. The single conductor
designs have a flat strap concentric neutral and a linear low density polyethylene jacket (optional high
temp. polypropylene jacket). The three conductor cable designs have a 5 mil copper tape applied
over the free-stripping insulation shield, cabled with optional neutrals and fillers, finally an overall
polyethylene jacket is extruded over the assembly.
COMPACT POWER CABLES
Single or Three-Conductor, Single Permashield® (SPS) - 105°C RATING
(For replacement of paper insulated lead covered cables)
BH100
B4031
VOLTAGE
Single
INSULATION SYSTEM
Conductor Insulation 1/C Jacket
1/C
3/C
3/C
Weight
O.D.
Weight
Conductor
Size
O.D.
O.D.
Prefix
(kcmil)
(Inches)
(Inches)
135X15-
350
1.01
1.23
1696
2.62
5463
15kV
150X15-
500
1.18
1.43
2334
2.99
6946
175 Mil Insulation System*
160X15-
600
1.22
1.46
2716
3.07
8056
175X15-
750
1.31
1.56
3312
3.27
9728
135X25-
350
1.20
1.45
1932
3.03
6212
25kV
150X25-
500
1.32
1.57
2548
3.29
7602
160X25-
600
1.41
1.66
2969
3.48
8746
175X25-
750
1.50
1.75
3582
3.68
10461
135X35-
350
1.37
1.62
2139
3.40
7147
35kV
150X35-
500
1.49
1.74
2771
3.66
8551
160X35-
600
1.59
1.87
3279
3.87
9738
175X35-
750
1.68
1.96
3872
4.06
11510
(lbs./Kft.) (Inches) (lbs./Kft.)
*The insulation system wall includes the layer of PERMASHIELD® and Kerite Insulation.
POWER CABLE
69kV SHIELDED (SPS) 90°C RATING
CONDUCTOR - Class B Copper Strand (Aluminum
INSULATION - Exclusive Corona-Immune EPR Insulation
INSULATION SHIELD - Thermosetting Semiconduction
Layer
METALLIC SHIELD - 5mil Copper Tape, 20% Overlap
JACKET - PVC (PE Available)
69kV SINGLE CONDUCTOR
14400
650 Mils Insulation
CATALOG
Size
No.
O.D.
Jacket
Cable
Over
NO.
(AWG/
of
Insul.
Thickness
O.D.
Weight
PREFIX
kcmil)
Str.
(Inches)
(Mils)
(Inches)
(Lbs./Kft)
141C69125C69135C69150C69175C69190C69192C69195C69197C69199C69-
4/0
250
350
500
750
1000
1250
1500
1750
2000
19
37
37
37
61
61
91
91
127
127
1.90
1.95
2.05
2.18
2.37
2.52
2.68
2.80
2.91
3.02
110
110
110
110
110
140
140
140
140
140
2.28
2.33
2.43
2.56
2.82
2.97
3.13
3.25
3.36
3.46
2.916
3.12
3.59
4.26
5.52
6.54
7.57
8.55
9.50
10.44
Metallic shielding may be customized to meet system requirements.
THIRTY MINUTE AC FINAL TEST VOLTAGE
AC (kV)
100
141C69-14400 = #4/0 AWG (19) CU, 69kV, SPS 650 mil Insulation,
Extruded Semicon, 5 mil CU Tape, 110 mil PVC Jacket.
POWER CABLE
Layer
14400
800 Mils Insulation
CATALOG
Size
No.
O.D.
Jacket
Cable
Over
NO.
(AWG/
of
Insul.
Thickness
O.D.
Weight
PREFIX
kcmil)
Str.
(Inches)
(Mils)
(Inches)
(Lbs./Kft)
150C95175C95190C95192C95195C95197C95199C95-
500
750
1000
1250
1500
1750
2000
37
61
61
91
91
127
127
2.48
2.67
2.82
2.98
3.10
3.21
3.32
140
140
140
140
140
140
140
2.93
3.12
3.27
3.43
3.55
3.66
3.76
5.16
6.30
7.36
8.44
9.44
10.42
11.39
AC (kV)
120
150C95-14400 = 500 kcmil (37) CU, 115kV, SPS 800 mil, Insulation,
POWER CABLE
Layer
14400
850 Mils Insulation
CATALOG
Size
No.
O.D.
Jacket
Cable
Over
NO.
(AWG/
of
Insul.
Thickness
O.D.
Weight
PREFIX
kcmil)
Str.
(Inches)
(Mils)
(Inches)
(Lbs./Kft)
150C98-
500
37
2.58
140
3.03
5.42
175C98-
750
61
2.77
140
3.22
6.58
190C98-
1000
61
2.92
140
3.37
7.65
192C98-
1250
91
3.08
140
3.53
8.74
195C98-
1500
91
3.20
140
3.65
9.75
197C98-
1750
127
3.31
140
3.76
10.75
199C98-
2000
127
3.42
140
3.86
11.72
AC (kV)
130
150C98-14400 = 500 kcmil (37) CU, 115kV, SPS 850 mil, Insulation,
UNDERGROUND DISTRIBUTION CABLE (URD,UD)
CONCENTRIC NEUTRAL
15kV ALUMINUM (UL) - 90° C Rating
CONDUCTOR - Solid or Class "B" Strand
Layer
CONCENTRICS - Neutrals as Specified Below
JACKET - 50 mil Over Concentric Wires, Insulating LLDPE
W/3 Red Stripes, Semiconducting Available
FULL NEUTRAL
Single Phase
Single Conductor
11200
31200
175 Mil Insulation (100%)*
Copper
O.D.
O.D.
O.D.
O.D.
CATALOG
Size
No.
Neutral
Over
Over
Cable
Over
Over
Cable
NO.
(AWG/
of
Wires
Insul.
Jacket
Weight
Insul.
Jacket
Weight
(Inches)
(lbs./kft)
(Inches)
(Inches)
PREFIX
kcmil) Str. (No. - AWG) (Inches)
Ampacity**
Direct Nonmetallic
(lbs./kft) Burial
Conduit
102S15-
2
SOL
10-#14
0.68
0.99
514
0.77
1.08
592
170
125
102A15-
2
7
10-#14
0.71
1.01
536
0.80
1.11
617
170
125
101S15-
1
SOL
13-#14
0.71
1.02
583
0.80
1.11
664
190
140
101A15-
1
19
13-#14
0.74
1.05
607
0.84
1.15
690
190
140
111S15-
1/0
SOL
16-#14
0.74
1.05
658
0.84
1.15
742
215
160
111A15-
1/0
19
16-#14
0.78
1.09
685
0.88
1.19
772
215
160
121S15-
2/0
SOL
20-#14
0.78
1.09
753
0.88
1.19
839
240
185
121A15-
2/0
19
20-#14
0.83
1.14
784
0.92
1.23
874
240
185
131A15-
3/0
19
25-#14
0.88
1.19
904
0.97
1.28
998
270
210
141A15-
4/0
19
20-#12
0.93
1.28
1086
1.03
1.37
1187
305
240
125A15-
250
37
25-#12
0.99
1.33
1249
1.09
1.45
1376
340
270
135A15-
350
37
20-#10
1.09
1.50
1591
1.19
1.59
1709
395
320
150A15-
500
37
29-#10
1.22
1.63
2094
1.32
1.72
2222
475
405
CONCENTRIC NEUTRAL
15kV ALUMINUM (UL) - 90° C Rating
Layer
ONE-THIRD NEUTRAL
13200
33200
Copper
O.D.
O.D.
O.D.
O.D.
CATALOG
Size
No.
Neutral
Over
Over
Cable
Over
Over
Cable
NO.
(AWG/
of
Wires
Insul.
Jacket
Weight
Insul.
Jacket
Weight
(Inches)
(lbs./kft)
(Inches)
(Inches)
PREFIX
Three Phase
3 - 1/C Cables
Paralleled or
Triplexed
Ampacity**
Direct Nonmetallic
(lbs./kft) Burial
Conduit
102S15-
2
SOL
6-#14
0.68
0.99
467
0.77
1.08
545
135
125
102A15-
2
7
6-#14
0.71
1.01
490
0.80
1.11
570
135
125
101S15-
1
SOL
6-#14
0.71
1.02
501
0.80
1.11
582
155
145
101A15-
1
19
6-#14
0.74
1.05
525
0.84
1.15
609
155
145
111S15-
1/0
SOL
6-#14
0.74
1.05
541
0.84
1.15
625
175
165
111A15-
1/0
19
6-#14
0.78
1.09
568
0.88
1.19
655
175
165
121S15-
2/0
SOL
7-#14
0.78
1.09
601
0.88
1.19
687
200
185
121A15-
2/0
19
7-#14
0.83
1.14
632
0.92
1.23
722
200
185
131A15-
3/0
19
9-#14
0.88
1.19
717
0.97
1.28
811
225
210
141A15-
4/0
19
11-#14
0.93
1.24
814
1.03
1.34
913
250
245
125A15-
250
37
13-#14
0.99
1.30
907
1.09
1.41
1031
275
270
135A15-
350
37
18-#14
1.09
1.42
1139
1.19
1.52
1253
330
325
150A15-
500
37
25-#14
1.22
1.55
1444
1.32
1.65
1567
395
390
175A15-
750
61
24-#12
1.41
1.79
1994
1.51
1.88
2136
475
485
190A15-
1000
61
20-#10
1.56
2.01
2564
1.66
2.10
2723
540
535
Note:
The diameters and weights shown are approximate and subject to normal manufacturing tolerances.
* Approved for use on 15kV REA system.
4) 75% load factor
** Ampacity assumes:
1) Earth RHO 90°C - cm/Watt
5) Average 36 inch burial depth
2) Earth ambient temperature 20°C
3) Average earth interface temperature limited to 45°C 6) Sheath losses included
CONCENTRIC NEUTRAL
15kV COPPER (UL) - 90° C Rating
Layer
FULL NEUTRAL
CATALOG
NO.
PREFIX
Size
No.
(AWG/ of
11200
31200
Copper
O.D.
O.D.
O.D.
O.D.
Neutral
Over
Over
Cable
Over
Over
Cable
Wires
Insul.
Jacket
Weight
Insul.
Jacket
Weight
(Inches)
(Inches)
(lbs./kft)
(Inches)
(Inches)
kcmil) Str. (No. - AWG)
Single Phase
Single Conductor
Ampacity**
Direct Nonmetallic
(lbs./kft) Burial
Conduit
102C15-
2
7
16-#14
0.71
1.01
749
0.80
1.11
829
215
160
101C15-
1
19
20-#14
0.74
1.05
869
0.84
1.15
953
245
180
111C15-
1/0
19
25-#14
0.78
1.09
1017
0.88
1.19
1104
275
205
121C15-
2/0
19
20-#14
0.83
1.17
1234
0.92
1.26
1326
310
235
131C15-
3/0
19
25-#14
0.88
1.22
1464
0.97
1.31
1561
345
270
141C15-
4/0
19
20-#14
0.93
1.32
1793
1.03
1.41
1897
390
310
125C15-
250
37
25-#14
0.99
1.37
2096
1.09
1.49
2225
430
345
CONCENTRIC NEUTRAL
15kV COPPER (UL) - 90° C Rating
Layer
ONE-THIRD NEUTRAL
CATALOG
NO.
PREFIX
Size
No.
(AWG/ of
13200
33200
Copper
O.D.
O.D.
O.D.
O.D.
Neutral
Over
Over
Cable
Over
Over
Cable
Wires
Insul.
Jacket
Weight
Insul.
Jacket
Weight
(Inches)
(Inches)
(lbs./kft)
(Inches)
(Inches)
Three Phase
3 - 1/C Cables
Paralleled or
Triplexed
Ampacity**
Direct Nonmetallic
(lbs./kft) Burial
Conduit
102C15-
2
7
6-#14
0.71
1.01
632
0.80
1.11
713
175
160
101C15-
1
19
7-#14
0.74
1.05
717
0.84
1.15
801
200
185
111C15-
1/0
19
9-#14
0.78
1.09
830
0.88
1.19
917
225
210
121C15-
2/0
19
11-#14
0.83
1.14
965
0.92
1.23
1055
250
235
131C15-
3/0
19
14-#14
0.88
1.19
1136
0.97
1.28
1230
285
270
141C15-
4/0
19
18-#14
0.93
1.24
1350
1.03
1.34
1449
320
310
125C15-
250
37
21-#14
0.99
1.30
1537
1.09
1.41
1661
350
340
135C15-
350
37
29-#14
1.09
1.42
2019
1.19
1.52
2133
410
405
150C15-
500
37
26-#12
1.22
1.58
2745
1.32
1.68
2871
480
475
175C15-
750
61
25-#10
1.41
1.82
3944
1.51
1.91
4088
560
570
Note:
4) 75% load factor
3) Average earth interface temperature limited to 45°C
6) Sheath losses included
CONCENTRIC NEUTRAL
25kV ALUMINUM - 90°C Rating (UL)
Layer
JACKET - 50 mil Over Concentric Wire, Insulating LLDPE
FULL NEUTRAL
11200
31200
Copper
O.D.
O.D.
O.D.
O.D.
CATALOG
Size
No.
Neutral
Over
Over
Cable
Over
Over
Cable
NO.
(AWG/
of
Wires
Insul.
Jacket
Weight
Insul.
Jacket
Weight
(Inches)
(lbs./kft)
(Inches)
(Inches)
PREFIX
Single Phase
Single Conductor
Ampacity**
Direct Nonmetallic
(lbs./kft) Burial
Conduit
101S25-
1
SOL
13-#14
0.89
1.20
746
1.02
1.33
880
200
145
101A25-
1
19
13-#14
0.93
1.23
775
1.06
1.36
913
200
145
111S25-
1/0
SOL
16-#14
0.93
1.24
827
1.06
1.37
965
225
165
111A25-
1/0
19
16-#14
0.97
1.27
860
1.10
1.42
1023
225
165
121S25-
2/0
SOL
20-#14
0.97
1.28
928
1.10
1.43
1091
250
190
121A25-
2/0
19
20-#14
1.01
1.32
966
1.14
1.47
1134
250
190
131A25-
3/0
19
25-#14
1.06
1.39
1114
1.19
1.52
1269
280
215
141A25-
4/0
19
20-#12
1.12
1.48
1309
1.25
1.61
1473
320
245
125A25-
250
37
25-#12
1.17
1.53
1483
1.30
1.66
1653
350
280
135A25-
350
37
20-#10
1.28
1.68
1826
1.41
1.81
2012
410
330
150A25-
500
37
29-#10
1.41
1.81
2349
1.54
1.94
2549
490
405
CONCENTRIC NEUTRAL
25kV COPPER - 90°C Rating (UL)
Layer
ONE-THIRD NEUTRAL
13200
33200
Copper
O.D.
O.D.
O.D.
O.D.
CATALOG
Size
No.
Neutral
Over
Over
Cable
Over
Over
Cable
NO.
(AWG/
of
Wires
Insul.
Jacket
Weight
Insul.
Jacket
Weight
(Inches)
(lbs./kft)
(Inches)
(Inches)
PREFIX
Three Phase
3 - 1/C Cables
Paralleled or
Triplexed
Ampacity**
Direct Nonmetallic
(lbs./kft) Burial
Conduit
101S25-
1
SOL
6-#14
0.89
1.20
664
1.02
1.33
798
155
145
101A25-
1
19
6-#14
0.93
1.23
694
1.06
1.36
832
155
145
111S25-
1/0
SOL
6-#14
0.93
1.24
710
1.06
1.37
848
180
165
111A25-
1/0
19
6-#14
0.97
1.27
743
1.10
1.42
906
180
165
121S25-
2/0
SOL
7-#14
0.97
1.28
776
1.10
1.43
939
200
190
121A25-
2/0
19
9-#14
1.01
1.32
814
1.14
1.47
982
200
190
131A25-
3/0
19
9-#14
1.06
1.39
927
1.19
1.52
1082
225
215
141A25-
4/0
19
11-#14
1.12
1.44
1034
1.25
1.57
1195
255
245
125A25-
250
37
13-#14
1.17
1.50
1136
1.30
1.63
1304
280
270
135A25-
350
37
18-#14
1.28
1.60
1366
1.41
1.73
1545
335
320
150A25-
500
37
25-#14
1.41
1.73
1690
1.54
1.86
1884
400
395
175A25-
750
61
24-#12
1.60
2.00
2320
1.73
2.13
2542
485
480
190A25-
1000
61
20-#10
1.75
2.19
2879
1.88
2.32
3121
550
550
Note:
4) 75% load factor
CONCENTRIC NEUTRAL
Layer
FULL NEUTRAL
Single Phase
Single Conductor
CATALOG
NO.
PREFIX
Size
No.
(AWG/ of
11200
31200
Copper
O.D.
O.D.
O.D.
O.D.
Neutral
Over
Over
Cable
Over
Over
Cable
Wires
Insul.
Jacket
Weight
Insul.
Jacket
Weight
(Inches)
(Inches)
(lbs./kft)
(Inches)
(Inches)
Ampacity**
Direct Nonmetallic
(lbs./kft) Burial
Conduit
101C15-
1
19
20-#14
0.93
1.23
1038
1.06
1.36
1176
255
185
111C15-
1/0
19
25-#14
0.97
1.27
1192
1.10
1.42
1355
285
210
121C15-
2/0
19
20-#14
1.01
1.35
1420
1.14
1.50
1591
320
240
131C15-
3/0
19
25-#14
1.06
1.42
1678
1.19
1.55
1836
360
275
141C15-
4/0
19
20-#14
1.12
1.52
2022
1.25
1.65
2190
405
320
125C15-
250
37
25-#14
1.17
1.58
2335
1.30
1.71
2509
445
355
CONCENTRIC NEUTRAL
Layer
ONE-THIRD NEUTRAL
CATALOG
NO.
PREFIX
Size
No.
(AWG/ of
13200
33200
Copper
O.D.
O.D.
O.D.
O.D.
Neutral
Over
Over
Cable
Over
Over
Cable
Wires
Insul.
Jacket
Weight
Insul.
Jacket
Weight
(Inches)
(Inches)
(lbs./kft)
(Inches)
(Inches)
Three Phase
3 - 1/C Cables
Paralleled or
Triplexed
Ampacity**
Direct Nonmetallic
(lbs./kft) Burial
Conduit
101C25-
1
19
7-#14
0.93
1.23
886
1.06
1.36
1024
200
190
111C25-
1/0
19
9-#14
0.97
1.27
1005
1.10
1.42
1168
225
215
121C25-
2/0
19
11-#14
1.01
1.32
1146
1.14
1.47
1315
255
245
131C25-
4/0
19
14-#14
1.06
1.39
1346
1.19
1.52
1501
290
275
141C25-
4/0
19
18-#14
1.12
1.44
1570
1.25
1.57
1731
325
310
125C25-
250
37
21-#14
1.17
1.50
1767
1.30
1.63
1934
355
340
135C25-
350
37
29-#14
1.28
1.60
2246
1.41
1.73
2425
420
405
150C25-
500
37
26-#12
1.41
1.77
2996
1.54
1.90
3193
490
485
175C25-
750
61
25-#10
1.60
2.03
4273
1.73
2.16
4498
575
565
Note:
4) 75% load factor
CONCENTRIC NEUTRAL
Layer
FULL NEUTRAL
11200
31200
Copper
O.D.
O.D.
O.D.
O.D.
CATALOG
Size
No.
Neutral
Over
Over
Cable
Over
Over
Cable
NO.
(AWG/
of
Wires
Insul.
Jacket
Weight
Insul.
Jacket
Weight
(Inches)
(lbs./kft)
(Inches)
(Inches)
PREFIX
Single Phase
Single Conductor
Ampacity**
Direct Nonmetallic
(lbs./kft) Burial
Conduit
111S35-
1/0
SOL
16-#14
1.11
1.44
1035
1.28
1.61
1237
235
170
111A35-
1/0
19
16-#14
1.15
1.48
1074
1.32
1.65
1282
235
170
121S35-
2/0
SOL
20-#14
1.15
1.48
1142
1.32
1.65
1350
260
195
121A35-
2/0
19
20-#14
1.20
1.52
1186
1.36
1.69
1401
260
195
131A35-
3/0
19
25-#14
1.25
1.57
1322
1.41
1.74
1543
295
160
141A35-
4/0
19
20-#12
1.30
1.66
1530
1.47
1.83
1762
330
255
125A35-
250
37
25-#12
1.36
1.72
1711
1.53
1.89
1952
365
285
135A35-
350
37
20-#10
1.46
1.87
2074
1.63
2.06
2378
425
335
150A35-
500
37
29-#10
1.59
2.02
2659
1.76
2.19
2940
510
415
CONCENTRIC NEUTRAL
Layer
ONE-THIRD NEUTRAL
13200
33200
Copper
O.D.
O.D.
O.D.
O.D.
CATALOG
Size
No.
Neutral
Over
Over
Cable
Over
Over
Cable
NO.
(AWG/
of
Wires
Insul.
Jacket
Weight
Insul.
Jacket
Weight
(Inches)
(lbs./kft)
(Inches)
(Inches)
PREFIX
Three Phase
3 - 1/C Cables
Paralleled or
Triplexed
Ampacity**
Direct Nonmetallic
(lbs./kft) Burial
Conduit
111S35-
1/0
SOL
6-#14
1.11
1.44
918
1.28
1.61
1121
185
170
111A35-
1/0
19
6-#14
1.15
1.48
957
1.32
1.65
1165
185
170
121S35-
2/0
SOL
7-#14
1.15
1.48
990
1.32
1.65
1198
205
195
121A35-
2/0
19
7-#14
1.20
1.52
1034
1.36
1.69
1249
205
195
131A35-
3/0
19
9-#14
1.25
1.57
1135
1.41
1.74
1357
230
220
141A35-
4/0
19
11-#14
1.30
1.63
1250
1.47
1.80
1479
260
250
125A35-
250
37
13-#14
1.36
1.69
1360
1.53
1.85
1597
285
280
135A35-
350
37
18-#14
1.46
1.79
1605
1.63
1.99
1900
340
335
150A35-
500
37
25-#14
1.59
1.95
1990
1.76
2.12
2263
410
405
175A35-
750
61
24-#12
1.78
2.18
2614
1.95
2.35
2918
500
500
190A35-
1000
61
20-#10
1.93
2.38
3199
2.10
2.54
3529
565
565
Note:
4) 75% load factor
CONCENTRIC NEUTRAL
Layer
FULL NEUTRAL
CATALOG
NO.
PREFIX
Size
No.
(AWG/ of
11200
31200
Copper
O.D.
O.D.
O.D.
O.D.
Neutral
Over
Over
Cable
Over
Over
Cable
Wires
Insul.
Jacket
Weight
Insul.
Jacket
Weight
(Inches)
(Inches)
(lbs./kft)
(Inches)
(Inches)
Single Phase
Single Conductor
Ampacity**
Direct Nonmetallic
(lbs./kft) Burial
Conduit
111C35-
1/0
19
25-#14
1.15
1.48
1406
1.32
1.65
1614
295
215
121C35-
2/0
19
20-#12
1.20
1.56
1645
1.36
1.72
1863
335
250
131C35-
3/0
19
25-#12
1.25
1.61
1891
1.41
1.77
2116
375
285
141C35-
4/0
19
20-#10
1.30
1.71
2248
1.47
1.87
2485
420
325
125C35-
250
37
25-#10
1.36
1.76
2568
1.53
1.93
2813
465
360
CONCENTRIC NEUTRAL
Layer
ONE-THIRD NEUTRAL
CATALOG
NO.
PREFIX
Size
No.
(AWG/ of
13200
33200
Three Phase
3 - 1/C Cables
Paralleled or
Triplexed
Ampacity**
Copper
O.D.
O.D.
O.D.
O.D.
Neutral
Over
Over
Cable
Over
Over
Cable
Wires
Insul.
Jacket
Weight
Insul.
Jacket
Weight
(Inches)
(Inches)
(lbs./kft)
(Inches)
(Inches)
Direct Nonmetallic
(lbs./kft) Burial
Conduit
111C35-
1/0
19
9-#14
1.15
1.48
1219
1.32
1.65
1427
235
220
121C35-
2/0
19
11-#14
1.20
1.52
1367
1.36
1.69
1582
265
250
131C35-
3/0
19
14-#14
1.25
1.57
1554
1.41
1.74
1775
295
280
141C35-
4/0
19
18-#14
1.30
1.63
1786
1.47
1.80
2015
335
320
125C35-
250
37
21-#14
1.36
1.69
1991
1.53
1.85
2228
365
355
135C35-
350
37
29-#14
1.46
1.79
2485
1.63
1.99
2779
430
420
150C35-
500
37
26-#12
1.59
1.98
3300
1.76
2.15
3577
505
500
175C35-
750
61
25-#10
1.78
2.21
4570
1.95
2.38
4878
595
595
Note:
4) 75% load factor
INDUSTRY APPLICATIONS
Underground Power Distribution
Concentric neutral cables are used for primary power distribution by Investor owned Municipal
and Cooperative Utilities and commercial / Industrial users. Commonly referred to as
Underground Residential Distribution cables they are a critical component in the power
infrastructure. Due to the publics expectations for reliability and the high cost of repair and
replacement field proven long term performance is a key application criteria. Kerite
Distribution cables offer unmatched field proven reliability and available with aluminum or
copper conductors in sizes from #2 AWG to 1000kcmil for 15-35kV systems.
Industrial Power Distribution
Long term reliability is critical for industrial applications. Even momentary power loss can
cause millions of dollars in lost product or scrap. Kerite Power cables offer unmatched field
proven reliability and available in a range of conductor sizes, voltage rating and protective
finishes for installation in underground ducts, conduit, cable tray, direct buried, aerial and
underwater.
Process Industries
(Petro-Chemical, Pharmaceutical, Steel, Semiconductors, Pulp & Paper, Glass)
Continuos process industries demand the highest level of cable reliability. Even a momentary
outage can cause safety hazard and can result in millions of dollars of lost production. Kerite
Power cables offer unmatched field proven reliability and are available in a range of conductor
sizes, voltage rating and protective finishes for installation in underground ducts, conduit,
cable tray, direct buried, aerial and underwater. Cables may be finished with Continuously
Corrugated Welded armor for Hazardous locations Class I, II, III, Division 1 and 2 - NEC
501,502 and 503.
Universities/Hospitals/Laboratories
The reliability of the power distribution system is absolutely critical for colleges, universities,
hospitals and laboratories. Even a momentary outage can cause safety/security hazards,
possible loss of life and unplanned termination of long term research experiments. Kerite
Power cables offer unmatched field proven reliability and are available in a range of conductor
sizes, voltage rating and protective finishes for installation in underground ducts, conduit,
cable tray, direct buried, aerial and underwater.
Water Treatment
Waste water treatment facilities require maximum reliability and the application environment is
particularly demanding. Kerite power cables with tinned copper shields and flame-retardant
jackets will provide un-matched service and are available in a range of conductor sizes,
voltage rating and protective finishes for installation in underground ducts, conduit, cable tray,
direct buried, aerial and underwater.
Power Generation
Long life and reliability are critical in power generation applications from gas and oil fired
generation facilities to green power programs such as wind farms and geothermal. Kerite
cables are designed to met the industries stringent specifications for performance and safety
and are available in a range of conductor sizes, voltage rating and protective finishes for
installation in underground ducts, conduit, cable tray, direct buried, aerial and underwater.
Stadiums/Airports /Theme Parks/Casinos
Power system reliability is absolutely critical to assure personnel safety. Kerite Power cables
offer unmatched field proven reliability and are available in a range of conductor sizes, voltage
rating and protective finishes for installation in underground ducts, conduit, cable tray, direct
buried, aerial and underwater.
Transit
Power system reliability is absolutely critical to assure personnel safety. Kerite Power cables
offer unmatched field proven reliability and are available in Low smoke zero Halogen to
comply with the specification of the major transit systems.
SPECIAL PRODUCT APPLICATIONS
Submarine (underwater)
Submarine cables provide power to offshore islands, oil platforms or to cross-rivers and lakes.
Typically these cables are installed as radial feeds and demand the highest level of reliability. Kerite
has over 100 years experience in producing submarine power cables. Our patented technology
allows for the production of continuos long lengths. These cables are available in a range of
conductor sizes, voltages, wire armor finishes and can incorporate fiber optic cable(s) within the
overall armor protection. Kerite Cable Services can provide turnkey installation.
Riser/Borehole
These cables are installed as the primary power feeds in high rise structures or in mining or other
vertical tunnel applications This application utilize helical applied wire armor to support and protect
the power cable core.
Aerial
Kerite pre-assembled aerial cable is fully shielded for personnel safety and can be installed in very
narrow rights of way. This design features the same time proven Permashield® and EP rubber
insulation system insulation system as in Kerite Power cables. The unique free-stripping insulation
shield assures fast and reliable terminations and splices. Kerite Cable Services can provide turnkey
installation.
Armored
Kerite power cables can be finished with a wide range of application specific protective armor. Wire
Armor for Submarine or Riser applications Interlocked galvanized steel or aluminum armor of
maximum mechanical protect in industrial facilities.
Continuously Corrugated Welded Armor
This product is an alternative to traditional interlocked armor as a means of providing mechanical
protection for power cables both during installation and while in service. In addition to the
mechanical protection CCW provides a hermetic seal against the ingress of water or other
potentially degrading fluids. The primary medium voltage application is as power feeders in PetroChemical, Pulp & Paper, Glass, Steel and other demanding industrial environments. These Cables
are UL listed MV-105 or MV 90 (depending on the cable core specified) type MC- HL. This
designation means that the cables are approved for Hazardous locations Class I, II, III, Division 1
and 2 - NEC 501,502 and 503
Portable power
Kerite offers flexible shielded cables for use in portable substation applications. These cable utilize
class H copper strand and a braided copper shield protected by a heavy-duty polyurethane jacket.
These cable can be supplied with factory made terminations.
Replacement of Paper Insulted Lead Covered (PILC)
Paper Insulated oil filled lead covered cables have provide excellent service for more than 100
years. However environmental concerns regarding lead and oil as well as loss of skilled splicers
has created the need for an alternative product that can be retrofitted in the existing ducts. Kerite
offers reduced diameter cables utilizing the same time proven Permashield® and EP rubber
insulation system insulation system as Kerite Power cables.
Transmission Cables
Underground transmission cables provide a alternative to obtrusive overhead transmission lines in
congested areas. Applications include HV industrial feeds, Line dips for airport or highway
crossings. Typical circuits are 1-2 miles. Kerite first introduced 69kV cable in 1967and extended the
line up to 138kV in 1975. The Permashield® and EP rubber insulation system insulation system is
flexible and lightweight and does not require impervious sheath. Kerite Cable Services can provide
turnkey installation.
CONDUCTOR DIMENSIONS & WEIGHTS
Solid and Class B Stranded
Conductor Circular
Size
Stranding
Diameter Mil Area
(AWG/
(No. x Mils)
(inch)
(kcmil)
kcmil)
Aluminum Conductors
Copper Conductors
DC Resistance
DC Resistance
Weight
Area
Weight
@ 25° C
@ 25° C
(lbs/kft)
(sq. mm) (lbs/kft)
(ohms/kft)
(ohms/kft)
18
solid
0.0403
1.62
0.82
1.5
10.70
4.92
6.51
16
solid
0.0508
2.58
1.31
2.4
6.72
7.81
4.10
14
solid
0.0641
4.11
2.08
3.8
4.22
12.40
2.57
12
solid
0.0808
6.53
3.31
6.0
2.66
19.80
1.62
10
solid
0.1019
10.4
5.26
9.6
1.67
31.43
1.02
9
solid
0.1144
13.1
6.63
12.0
1.32
39.62
0.808
8
solid
0.1285
16.5
8.39
15.2
1.05
49.98
0.640
6
solid
0.1620
26.2
13.3
24.2
0.661
79.44
0.403
4
solid
0.2043
41.7
21.1
38.4
0.415
126.3
0.253
3
solid
0.2294
52.6
26.7
48.5
0.329
159.3
0.201
2
solid
0.2576
66.4
33.6
61.1
0.261
200.9
0.159
1
solid
0.2893
83.7
42.4
77.1
0.207
253.3
0.126
1/0
solid
0.3249
106
53.5
97.2
0.164
319.5
0.100
2/0
solid
0.3649
133
67.5
122.5
0.130
402.8
0.079
3/0
solid
0.4096
168
85.0
154.5
0.103
507.8
0.063
4/0
solid
0.4600
212
107.0
194.8
0.082
640.5
0.050
10
7 x 38.5
0.113
10.4
5.26
9.7
1.700
32.1
1.040
9
7 x 43.2
0.126
13.1
6.62
12.3
1.350
40.0
0.825
8
7 x 48.6
0.142
16.5
8.38
15.5
1.070
51.0
0.652
6
7 x 61.2
0.179
26.2
13.30
24.6
0.675
80.9
0.411
4
7 x 77.2
0.226
41.7
21.1
39.2
0.424
129
0.258
3
7 x 86.7
0.254
52.6
26.7
49.4
0.336
162
0.205
2
7 x 97.4
0.285
66.4
33.6
62.3
0.266
205
0.162
1
19 x 66.4
0.324
83.8
42.4
78.6
0.211
259
0.129
1/0
19 x 74.5
0.363
105
53.4
99
0.168
326
0.102
2/0
19 x 83.7
0.408
133
67.4
125
0.133
411
0.081
3/0
19 x 94.0
0.458
168
85.1
157
0.105
518
0.0642
4/0
19 x 105.5
0.514
211
107.0
199
0.084
653
0.0510
250
37 x 82.2
0.561
250
127
235
0.0707
772
0.0431
350
37 x 97.3
0.664
350
177
329
0.0505
1080
0.0308
CONDUCTOR DIMENSIONS & WEIGHTS
Solid and Class B Stranded Continued
Size
Conductor Circular
Stranding
(AWG/
Diameter Mil Area
(No. x Mils)
kcmil)
(inch)
(kcmil)
Aluminum Conductors
Copper Conductors
DC Resistance
DC Resistance
Area
Weight
Weight
@ 25° C
@ 25° C
(sq. mm) (lbs/kft)
(lbs/kft)
(ohms/kft)
(ohms/kft)
400
37 x 104.0
0.710
400
203
376
0.0442
1236
0.0269
500
37 x 116.2
0.793
500
253
469
0.0354
1542
0.0216
600
61 x 99.2
0.870
600
304
563
0.0295
1850
0.0180
750
61 x 110.9
0.973
750
380
704
0.0236
2316
0.0144
1000
61 x 128.0
1.123
1000
506
939
0.0177
3086
0.0108
1250
91 x 117.2
1.257
1250
633
1173
0.0141
3859
0.0086
1500
91 x 128.4
1.377
1500
760
1408
0.0118
4632
0.0072
1750
127 x 117.4
1.486
1750
887
1643
0.0101
5412
0.0062
2000
127 x 125.5
1.590
2000
1013
1877
0.0089
6176
0.0054
Useful Electrical Formulas for Determining Amperes, Horsepower, Kilowatts
and Kilovolt Amperes
Alternating Current
To
Direct
Find
Current
Single-Phase
Three-Phase
HP x 746
E x Eff
HP x 746
E x Eff x PF
1.73 x E x Eff x PF
Amperes
when Kilowatts
are known
KW x 1000
E
KW x 1000
KW x 1000
Amperes
when Kilovolt Amperes
KVA x 1000
KVA x 1000
Amperes
when Horsepower
is known
are known
Kilowatts
E
E x PF
E
HP x 746
1.73 x E x PF
KVA x 1000
1.73 x E
IxE
I x E x PF
I x E x 1.73 x PF
1000
1000
1000
IxE
IxE
I x E x 1.73
1000
1000
1000
Horsepower
I x E x Eff
I x E x Eff x Pf
I x E x 1.73 x Eff x PF
(Output)
746
746
746
Kilovolt Amperes
Notes:
I = Amperes; E = Phase-to-Phase Volts; Eff. = Efficiency expressed as a decimal (95% = 0.95); PF = Power Factor
expressed as a decimal (85% = 0.85); KW = Kilowatts, KVA = Kilovolt Amperes; HP = Horsepower.
SHORT CIRCUIT LIMITATIONS
On power systems with particularly high KVA capacity, the available short circuit current must be
considered in the selection of the conductor size. The graphs on the following pages show the
maximum amperes Kerite cables and shields can carry for various periods of time without injury to
the insulation system.
BASIC CALCULATION
When calculating the time a conductor can carry a particular fault current, or determining the fault
current which can be carried for a specific time, it is conservatively assumed that the total heat
generated is stored in the conductor for the brief duration of the short circuit, without any dissipation
of heat to the environment.
The following basic equation is then used. Either the allowable fault current (I), the allowable
duration of time (t), or the cross sectional area (A) of metal necessary to sustain a particular fault
can be computed when two of the three variables are known.
t=
A2 k
----I2
A = Total cross-sectional area concentric neutral, tape shield, lead sheath or phase conductor
(circular mils)
I = Fault Current (amperes)
t = Duration of Fault (seconds)
k = Constant for conductor or shield material
Conductor
Copper
Aluminum
k value
5.215 x 10-3
2.341 x 10-3
Starting temperature 90°C. Maximum safe
temperature 250°C
Shield
Copper
Bronze
Zinc
Cupro-Nickel
Lead
6.258 x 10-3
3.383 x 10-3
1.534 x 10-3
0.560 x 10-3
0.225 x 10-3
Starting temperature 65°C. Maximum safe temperature 250°C.
RESISTANCE AT OTHER TEMPERATURES
Where: R1 = Resistance at Temperature T1
R2 = Resistance at Temperature T2
T1 =
Reference Temperature °C
T2 =
Temperature at Which Resistance R2 is desired °C
K=
234.5 for copper / 228 for aluminum
SHORT CIRCUIT CURVES TIME VS. FAULT CURRENT FOR SAFE OPERATION COPPER
CONDUCTORS
(For Aluminum Conductors Multiply Time Scale by 0.45)
SHORT CIRCUIT CURVES
TIME VS. FAULT CURRENT FOR SAFE OPERATION
5 mil COPPER TAPE
NOTE: Effective cross-sectional area of tape (A) including lap conduction equals:
where: TS = Tape Thickness (mils)
SD = Shield Diameter (mils)
PL = Tape Lap (Percent)
The above graph is used to obtain times for safe operation under fault conditions (tape temperature
limited to 250°C). For fusing, the same graph may be used as follows (tape reaching its melting
temperature).
1. To find the time of fusing for a particular current, enter chart with current, find safe time and
multiply by 4.93 to get time to fusing.
2. To find the fusing current for a particular time, divide the time by 4.93 and enter the chart with this
figure to find the fusing current.
SHORT CIRCUIT CURVES
TIME VS. FAULT CURRENT FOR SAFE OPERATION
5 mil Cu-Ni TAPE
TIME - CYCLES (60Hz BASE)
NOTE: Effective cross-sectional area of tape (A) including lap conduction equals:
where: TS = Tape Thickness (mils)
SD = Shield Diameter (mils)
PL = Tape Lap (Percent)
The above graph is used to obtain times for safe operation under fault conditions (tape temperature
limited to 250°C). For fusing, the same graph may be used as follows (tape reaching its melting
temperature).
1. To find the time of fusing for a particular current, enter chart with current, find safe time and
multiply by 4.93 to get time to fusing.
2. To find the fusing current for a particular time, divide the time by 4.93 and enter the chart with this
figure to find the fusing current.
CHARGING CURRENT
CAPACITANCE VALUES
Single Permashield (SPS) Picofarads Per Foot (pf/ft.)
Conductor
Size
(AWG/kcmil)
5kV
8kV
15kV
25kV
35kV
Insulation
Insulation
Insulation
Insulation
Insulation
115 Mil
115 Mil
140 Mil
6
66
66
58
4
76
76
67
2
1
1/0
2/0
3/0
4/0
250
350
500
750
1000
1250
1500
1750
2000
89
97
105
114
125
136
146
167
193
232
262
244
264
283
300
89
97
105
114
125
136
146
167
193
232
262
202
218
233
247
77
84
91
99
108
117
125
143
165
198
223
202
218
233
247
69kV
Conductor
Size
175 Mil
220 Mil
260 Mil
320 Mil
345 Mil
420 Mil
66
72
77
84
91
98
105
120
137
164
184
168
181
193
204
57
62
66
71
77
83
89
101
115
137
153
168
181
193
204
55
59
63
68
74
79
88
101
119
133
146
157
167
176
48
52
55
59
64
68
76
86
101
113
123
132
140
148
45
48
51
55
61
69
81
90
98
105
112
118
40
42
45
48
53
60
70
77
84
90
95
100
115kV
138kV
Insulation
(AWG/kcmil)
650 Mil
800 Mil
850 Mil
4/0
36
250
38
350
42
500
47
41
40
750
54
47
45
1000
59
52
50
1250
64
56
53
1500
69
59
57
1750
73
62
60
2000
76
65
63
CHARGING CURRENT — In Shielded Cable
The magnitude of the charging current in a cable can be determined by using the formula:
Ic = 2p fCEn x 10-6
where:
Ic = Charging Current - milliamperes
f = Frequency - Hertz
C = Cable capacitance - pf/ft.
En = Voltage to neutral - kilovolts
Example: For a 1/0 AWG 15kV cable with a 175 mil insulation wall:
SHEATH LOSSES
The common practice of grounding cable shields in three phase systems at multiple locations
results in induced voltages and circulating currents depending on the load currents and shield
impedance.
With individually jacketed cables these currents can be eliminated by interrupting the shield and
grounding each section at only one point. When using single point grounding, it is recommended
that the voltage rise at the opposite end from ground of each section be limited to approximately
120 volts, under normal operating conditions. Circulating shield currents can also be reduced by
cross bonding the shields to cancel out the induced voltages that generate these currents. (For
more information on shield currents and cross bonding, refer to IEEE Standard 575).
VOLTAGE RISE IN OPEN SHEATHS
Eliminating the problem of circulating sheath currents by operating the circuit with grounding at one
end results in a voltage being induced in the sheath. This voltage rise is proportional to distance
from the ground point and the phase current. As covered under sheath losses the voltage rise
should be limited to approximately 120 volts under normal operating conditions.
The following equation may be used for approximating the voltage rise on an open circuited sheath.
Where:
Vs = Voltage rise in open sheath (volts/1,000ft.)
Dm = Geometric mean distance between cables (inches)
Ds = Diameter of the shielding tape (inches)
lc = Current in the phase conductor (amps)
Note: Ds (the diameter of the shielding tape) can be arrived at by adding the value given in the
table below to the diameter over the insulation or outer Permashield.
Diameter
Over the
Insulation (Inches)
Single
Permashield
Cables
Double and
Triple Permashield Cables
up to 1.000
0.065
0.013
1.001 to 1.500
0.085
0.013
1.501 and up
0.115
0.013
1 Cable per duct, equilateral
spacing Dm = S.
For 3-1/C or 3/C twisted in one
duct. Dm = cable O.D.
For flat spaced configuration
Dm = 1.26S
For rectangular configuration
Dm = 1.12S
The constants below can be used with the following formula to calculate the voltage rise in
the sheath of 15kV, 25kV, and 35kV cables:
Where:
Vs = K x lc x 10-3
Volts/1,000 feet
Vs = Voltage rise in open sheath (Volts/1,000 ft.)
K = Constant from table below
lc = Phase Current (Amperes)
For Configuration:
A: S = Cable O.D.
B: S = 8 Inches
C: S = 8 Inches
CONSTANTS FOR USE IN CALCULATING VOLTAGE RISE ON OPEN
CIRCUITED SHIELDS
15kV
Cable Configuration
25kV
Cable Configuration
35kV
Cable Configuration
Conductor
Size
(AWG/kcmil)
2
1
1/0
2/0
3/0
4/0
250
350
500
750
1000
A
B
C
A
B
C
A
B
C
23
23
23
22
22
22
21
21
21
21
21
77
76
75
73
72
72
69
67
65
61
59
74
73
72
71
69
68
67
64
62
58
56
-22
22
21
21
21
21
21
20
20
20
-71
70
69
68
67
65
64
61
58
56
-68
67
66
65
64
63
61
59
55
53
--21
21
21
20
20
20
20
20
20
--66
65
64
63
62
60
58
56
54
--63
62
61
60
59
58
56
53
51
Example: One circuit of three single 500 kcmil, 15kV cables twisted, installed in a single duct
carrying 495 amps.
K =21
Vs = 21 x 495 x 10-3
Vs = 10.4 Volts/1,000 feet
POWER CABLE (TAPE SHIELD) SEQUENCE IMPEDANCE DATA
Three Phase — Copper Conductors — ohms/1,000 ft.
5kV
Three 1/C Cables
3/C Cable
Size
(AWG/kcmil)
Positive/Negative
Zero Sequence
Positive/Negative
Zero Sequence
6
4
2
1
1/0
2/0
3/0
4/0
250
350
500
750
1000
1250
1500
1750
2000
0.519 + j 0.115
0.329 + j 0.110
0.209 + j 0.104
0.167 + j 0.100
0.134 + j 0.098
0.108 + j 0.095
0.087 + j 0.092
0.070 + j 0.090
0.061 + j 0.087
0.046 + j 0.083
0.034 + j 0.079
0.026 + j 0.074
0.022 + j 0.071
0.019 + j 0.070
0.018 + j 0.066
0.017 + j 0.064
0.016 + j 0.063
0.803 + j 0.501
0.619 + j 0.479
0.506 + j 0.453
0.468 + j 0.437
0.438 + j 0.421
0.414 + j 0.404
0.395 + j 0.386
0.380 + j 0.367
0.371 + j 0.349
0.354 + j 0.319
0.338 + j 0.281
0.319 + j 0.240
0.305 + j 0.213
0.290 + j 0.189
0.281 + j 0.171
0.272 + j 0.159
0.264 + j 0.148
0.514 + j 0.050
0.323 + j 0.047
0.204 + j 0.043
0.162 + j 0.041
0.128 + j 0.039
0.102 + j 0.038
0.081 + j 0.037
0.064 + j 0.035
0.055 + j 0.034
0.040 + j 0.033
0.028 + j 0.032
0.020 + j 0.030
0.016 + j 0.029
0.014 + j 0.031
0.012 + j 0.028
0.011 + j 0.028
0.011 + j 0.027
0.880 + j 0.548
0.694 + j 0.519
0.577 + j 0.485
0.536 + j 0.464
0.504 + j 0.444
0.477 + j 0.423
0.455 + j 0.401
0.436 + j 0.378
0.423 + j 0.357
0.400 + j 0.321
0.376 + j 0.279
0.349 + j 0.235
0.331 + j 0.207
0.311 + j 0.182
0.299 + j 0.164
0.288 + j 0.152
0.279 + j 0.141
8kV
Three 1/C Cables
Size
Positive/Negative
(AWG/kcmil)
3/C Cable
Zero Sequence
Positive/Negative
Zero Sequence
6
0.520 + j 0.115
0.814 + j 0.474
0.514 + j 0.053
0.887 + j 0.510
4
0.329 + j 0.110
0.628 + j 0.453
0.323 + j 0.049
0.698 + j 0.483
2
0.209 + j 0.104
0.513 + j 0.429
0.204 + j 0.046
0.579 + j 0.452
1
0.167 + j 0.100
0.473 + j 0.412
0.162 + j 0.043
0.537 + j 0.432
1/0
0.134 + j 0.098
0.442 + j 0.398
0.128 + j 0.041
0.503 + j 0.414
2/0
0.108 + j 0.095
0.417 + j 0.382
0.102 + j 0.040
0.475 + j 0.394
3/0
0.087 + j 0.092
0.397 + j 0.365
0.081 + j 0.038
0.451 + j 0.374
4/0
0.070 + j 0.090
0.380 + j 0.347
0.064 + j 0.037
0.431 + j 0.353
250
0.061 + j 0.087
0.370 + j 0.330
0.055 + j 0.036
0.418 + j 0.333
350
0.046 + j 0.083
0.351 + j 0.297
0.040 + j 0.035
0.392 + j 0.296
500
0.034 + j 0.079
0.334 + j 0.266
0.028 + j 0.033
0.369 + j 0.262
8kV Continued
Three 1/C Cables
Size
Positive/Negative
(AWG/kcmil)
3/C Cable
Zero Sequence
Positive/Negative
Zero Sequence
750
0.026 + j 0.075
0.314 + j 0.228
0.020 + j 0.031
0.342 + j 0.222
1000
0.022 + j 0.071
0.298 + j 0.198
0.016 + j 0.031
0.320 + j 0.192
1250
0.019 + j 0.070
0.285 + j 0.181
0.014 + j 0.032
0.304 + j 0.174
1500
0.018 + j 0.066
0.275 + j 0.164
0.012 + j 0.029
0.292 + j 0.157
1750
0.017 + j 0.064
0.267 + j 0.152
0.011 + j 0.029
0.282 + j 0.145
2000
0.016 + j 0.062
0.259 + j 0.142
0.010 + j 0.028
0.273 + j 0.135
Assumptions:
(1) Single conductor cables horizontally spaced 8" on
center
(2) Three conductor cables paralleled or triplexed
(3) Perfect transposition of phase conductors
(4) Cables supply balanced load
(5) 90°C conductor temperature (45°C shield
temperature)
(6) Shield consists of 5 mil copper tape
(7) 100 meter-ohm earth
(8) Current returns in earth and shield as applicable.
CABLE SEQUENCE IMPEDANCE DATA
15kV
Three 1/C Cables
Size
3/C Cable
Positive/Negative
Zero Sequence
Positive/Negative
Zero Sequence
2
0.210 + j 0.104
0.518 + j 0.399
0.204 + j 0.048
0.577 + j 0.414
1
0.168 + j 0.100
0.477 + j 0.384
0.162 + j 0.046
0.534 + j 0.396
1/0
0.134 + j 0.097
0.444 + j 0.370
0.128 + j 0.044
0.499 + j 0.379
2/0
0.108 + j 0.095
0.418 + j 0.355
0.102 + j 0.042
0.470 + j 0.362
3/0
0.087 + j 0.092
0.397 + j 0.339
0.081 + j 0.041
0.445 + j 0.344
4/0
0.071 + j 0.089
0.379 + j 0.323
0.064 + j 0.039
0.424 + j 0.325
250
0.061 + j 0.087
0.367 + j 0.302
0.055 + j 0.038
0.408 + j 0.302
350
0.046 + j 0.083
0.347 + j 0.277
0.040 + j 0.036
0.384 + j 0.274
500
0.035 + j 0.079
0.329 + j 0.248
0.028 + j 0.035
0.360 + j 0.243
750
0.026 + j 0.074
0.308 + j 0.213
0.020 + j 0.033
0.333 + j 0.207
1000
0.022 + j 0.071
0.291 + j 0.187
0.016 + j 0.032
0.311 + j 0.180
1250
0.019 + j 0.070
0.279 + j 0.171
0.013 + j 0.033
0.296 + j 0.164
1500
0.018 + j 0.066
0.269 + j 0.155
0.012 + j 0.030
0.284 + j 0.148
1750
0.017 + j 0.064
0.260 + j 0.144
0.011 + j 0.030
0.274 + j 0.137
2000
0.016 + j 0.062
0.253 + j 0.135
0.010 + j 0.029
0.265 + j 0.128
(AWG/kcmil)
25kV
1
1/0
2/0
3/0
4/0
250
350
500
750
1000
1250
1500
1750
2000
0.168 + j 0.100
0.134 + j 0.097
0.108 + j 0.095
0.087 + j 0.092
0.071 + j 0.089
0.061 + j 0.087
0.046 + j 0.083
0.035 + j 0.079
0.026 + j 0.074
0.022 + j 0.071
0.019 + j 0.070
0.018 + j 0.066
0.017 + j 0.064
0.016 + j 0.062
0.478 + j 0.360
0.444 + j 0.347
0.417 + j 0.333
0.394 + j 0.313
0.376 + j 0.298
0.363 + j 0.284
0.343 + j 0.260
0.323 + j 0.234
0.300 + j 0.198
0.285 + j 0.177
0.273 + j 0.162
0.263 + j 0.148
0.255 + j 0.137
0.247 + j 0.129
0.135 + j 0.097
0.109 + j 0.095
0.088 + j 0.092
0.071 + j 0.089
0.061 + j 0.087
0.046 + j 0.083
0.035 + j 0.079
0.026 + j 0.074
0.022 + j 0.071
0.019 + j 0.070
0.018 + j 0.066
0.017 + j 0.064
0.016 + j 0.062
0.438 + j 0.298
0.400 + j 0.286
0.386 + j 0.274
0.366 + j 0.261
0.353 + j 0.248
0.331 + j 0.229
0.309 + j 0.203
0.286 + j 0.175
0.271 + j 0.157
0.259 + j 0.145
0.250 + j 0.133
0.242 + j 0.124
0.235 + j 0.117
0.162 + j 0.048
0.128 + j 0.046
0.102 + j 0.044
0.081 + j 0.043
0.064 + j 0.041
0.055 + j 0.040
0.040 + j 0.038
0.028 + j 0.036
0.020 + j 0.034
0.016 + j 0.033
0.013 + j 0.034
0.012 + j 0.031
0.011 + j 0.031
0.010 + j 0.030
0.529 + j 0.366
0.493 + j 0.351
0.463 + j 0.335
0.437 + j 0.314
0.415 + j 0.297
0.400 + j 0.281
0.375 + j 0.255
0.351 + j 0.228
0.321 + j 0.191
0.303 + j 0.170
0.288 + j 0.155
0.277 + j 0.141
0.267 + j 0.131
0.258 + j 0.123
35kV
1/0
2/0
3/0
4/0
250
350
500
750
1000
1250
1500
1750
2000
0.128 + j 0.050
0.102 + j 0.048
0.081 + j 0.046
0.064 + j 0.045
0.055 + j 0.043
0.040 + j 0.041
0.028 + j 0.039
0.020 + j 0.037
0.016 + j 0.036
0.013 + j 0.035
0.012 + j 0.033
0.011 + j 0.033
0.010 + j 0.032
0.476 + j 0.296
0.445 + j 0.283
0.419 + j 0.270
0.397 + j 0.256
0.382 + j 0.244
0.357 + j 0.223
0.330 + j 0.196
0.302 + j 0.168
0.285 + j 0.151
0.271 + j 0.139
0.261 + j 0.127
0.252 + j 0.118
0.244 + j 0.111
CABLE SEQUENCE IMPEDANCE DATA
46kV
Three 1/C Cables
3/C Cable
Size
(AWG/kcmil)
Positive/Negative
Zero Sequence
Positive/Negative
Zero Sequence
4/0
250
350
500
750
1000
1250
1500
1750
2000
0.071 + j 0.089
0.062 + j 0.087
0.046 + j 0.083
0.035 + j 0.079
0.026 + j 0.074
0.022 + j 0.071
0.020 + j 0.070
0.018 + j 0.066
0.017 + j 0.064
0.016 + j 0.062
0.357 + j 0.237
0.344 + j 0.226
0.321 + j 0.209
0.301 + j 0.189
0.278 + j 0.164
0.263 + j 0.148
0.251 + j 0.137
0.243 + j 0.125
0.235 + j 0.117
0.228 + j 0.111
0.065 + j 0.047
0.055 + j 0.045
0.040 + j 0.043
0.028 + j 0.041
0.020 + j 0.038
0.016 + j 0.037
0.013 + j 0.038
0.012 + j 0.034
0.011 + j 0.034
0.010 + j 0.033
0.383 + j 0.231
0.368 + j 0.220
0.343 + j 0.202
0.319 + j 0.182
0.292 + j 0.157
0.276 + j 0.141
0.262 + j 0.131
0.252 + j 0.120
0.244 + j 0.112
0.236 + j 0.106
69kV
Three 1/C Cables
Size
Positive/Negative
(AWG/kcmil)
4/0
250
350
500
750
1000
1250
1500
1750
2000
0.071 + j 0.089
0.062 + j 0.087
0.046 + j 0.083
0.035 + j 0.079
0.026 + j 0.074
0.022 + j 0.070
0.020 + j 0.070
0.018 + j 0.066
0.017 + j 0.064
0.016 + j 0.062
3/C Cable
Zero Sequence
Positive/Negative
Zero Sequence
0.337 + j 0.199
0.324 + j 0.191
0.301 + j 0.177
0.281 + j 0.161
0.259 + j 0.141
0.245 + j 0.129
0.234 + j 0.121
0.226 + j 0.111
0.219 + j 0.104
0.213 + j 0.099
0.065 + j 0.051
0.055 + j 0.049
0.040 + j 0.047
0.028 + j 0.044
0.020 + j 0.041
0.016 + j 0.041
0.013 + j 0.041
0.012 + j 0.037
0.011 + j 0.036
0.010 + j 0.035
0.355 + j 0.192
0.341 + j 0.184
0.316 + j 0.170
0.294 + j 0.155
0.269 + j 0.135
0.254 + j 0.123
0.242 + j 0.115
0.233 + j 0.106
0.225 + j 0.099
0.219 + j 0.094
115kV
Three 1/C Cables
3/C Cable
Size
(AWG/kcmil)
Positive/Negative
Zero Sequence
Positive/Negative
Zero Sequence
500
750
1000
1250
1500
0.035 + j 0.079
0.026 + j 0.074
0.022 + j 0.070
0.019 + j 0.070
0.018 + j 0.066
0.248 + j 0.127
0.228 + j 0.113
0.216 + j 0.105
0.206 + j 0.100
0.199 + j 0.092
0.028 + j 0.049
0.020 + j 0.046
0.016 + j 0.044
0.013 + j 0.045
0.012 + j 0.041
0.255 + j 0.122
0.234 + j 0.109
0.221 + j 0.100
0.211 + j 0.096
0.204 + j 0.088
138kV
Three 1/C Cables
3/C Cable
Size
(AWG/kcmil)
Positive/Negative
Zero Sequence
Positive/Negative
Zero Sequence
500
0.035 + j 0.078
0.231 + j 0.114
0.029 + j 0.052
0.236 + j 0.110
750
0.026 + j 0.074
0.212 + j 0.102
0.020 + j 0.048
0.216 + j 0.099
1000
0.022 + j 0.070
0.201 + j 0.095
0.016 + j 0.046
0.205 + j 0.091
1250
0.019 + j 0.070
0.192 + j 0.091
0.014 + j 0.047
0.196 + j 0.088
1500
0.018 + j 0.066
0.186 + j 0.084
0.012 + j 0.043
0.189 + j 0.081
Assumptions:
(5) 90°C conductor temperature (45°C shield
(1) Single conductor cables horizontally spaced 8" on center
temperature)
(2) Three conductor cables paralleled or triplexed
(6) Shield consists of 5 mil copper tape
(3) Perfect transposition of phase conductors
(7) 100 meter-ohm earth
(4) Cables supply balanced load
(8) Current returns in earth and shield as applicable.
DC FIELD TESTING
KERITE RECOMMENDED DC FIELD TEST VOLTAGES
The table below provides the recommended DC field test voltages for Kerite cables rated 600V
through 138kV. Test values are based on cable rated voltage and are provided for new installations
less than 5 years old, and for over 5 years old in dry environments. For cables over 5 years old in
wet environments, contact the factory for recommendations.
Column 3 lists test voltages to be used shortly after a cable installation has been completed.
Column 4 lists maintenance DC test voltages that may be used during the first five years after
installation for cable above or below grade.
Column 5 lists maintenance DC test voltages that may be used for cables installed above grade,
dry locations, five or more years after installation.
Column 6 covers cables installed below grade, wet locations, five or more years after installation
and recommends anyone contemplating DC Testing should consult the factory first.
DC Field Test Voltages
Shielded and Non-Shielded Cables
Refer to IEEE Standard 400 dated 1991 or later for additional details.
(1)
(2)
(3)
(4)
(5)
(6)
DC FIELD TEST VOLTAGES (kV - Conductor to Ground)
Maintenance Test Voltages
Rated
Voltage
kV rms
(phaseto-phase)
System
BIL
kv
(peak)
0.6
2.0
2.5
60
New
Installations
First 5 Years
After Installation
5 Years or more
After Installation
Any
Location
Any
Location
Above Grade
Dry Location
Below Grade
or Wet Location
10
8
8
C
20
16
16
O
25
20
20
N
S
5
8
15
75
95
110
35
40
55
25
30
40
25
30
40
U
L
T
25
35
46
150
200
250
80
100
120
60
75
90
60
75
90
F
A
C
T
69
84
115
350
425
550
170
200
226
125
150
170
125
150
170
138
650
240
180
180
O
R
Y
The preceding table lists the recommended DC installation and service test voltages for Kerite cables.
Make certain that the ends of cables are clean, disconnected from any apparatus, and positioned to
minimize surface leakage current and corona. Care should be taken to prevent generation of very
high stress by accidental flashovers at terminals or sudden grounding after the test. The voltage
should be reduced to 1/4 of full value by discharge through a resistor before solid grounding.
Conductors should be grounded for minimum durations equal to twice the test time.
Caution:
When testing non-shielded cables, ground any metallic objects in the vicinity of the cable being
tested to prevent voltage pickup.
Field testing is primarily a go, no-go test. The measured leakage current is very dependent on
temperature and unless terminals are properly prepared and/or guarded against surface leakage
and corona, the value recorded may have little relation to the true leakage through the insulation.
Refer to IEEE Standard 400 dated 1991 or later for additional details.
TYPICAL INSTALLATIONS UNDERGROUND IN DUCTS
Single Conductors
Assumptions:
Ambient Temperature 20°C
Conductor Temperature 90°C
Earth RHO 90°C - cm/watt
Concrete RHO 85°C - cm/watt
Duct RHO 600°C - cm/watt
No Sheath Losses (Single point grounding)
5 Inch Duct
Surface Limit 45°C (Direct Buried)
* NOTE: Cable surface temperature limit may reduce
conductor operating temperature.
Three Conductors
Paralleled/Triplexed or
One-Three
Conductor Cable
TYPICAL INSTALLATIONS IN AIR
Assumptions:
Ambient Temperature Indoor 40°C - Outdoor 35°C
Conductor Temperature 90°C
Surface Emissivity 0.85
No Sheath Losses
Additional Outdoor Conditions
Surface Absorptivity 0.33
Atmospheric Pressure 1 atm
Air Speed 4 ft./sec.
Derating Factors for Cables in Air
Separated by
1/4 to 1 Cable Diameters
No. of Cables Horizontally
No. of Cables
Vertically
1
2
3
4
5
6
2
0.89
0.83
0.79
0.76
0.75
0.74
3
0.80
0.76
0.72
0.70
0.69
0.68
4
0.77
0.72
0.68
0.67
0.66
0.65
5
0.75
0.70
0.66
0.65
0.64
0.63
6
0.74
0.69
0.64
0.63
0.62
0.61
Derating Factors for Cables in Air
One Layer of Spaced Cables in a Horizontal Line
Separation of Cable Surfaces
Derating Factors
S
Ka
0"
0.840
1"
0.890
2"
0.920
4"
0.960
6"
0.980
8"
0.990
10"
1.00
Derating Factors for Cables in Conduits in Air Separated by
1/4 to 1 Conduit Diameters
No. of Conduit Horizontally
No. of Conduits
Vertically
1
2
3
4
5
6
1
1.00
0.94
0.91
0.88
0.87
0.86
2
0.92
0.87
0.84
0.81
0.80
0.79
3
0.85
0.81
0.78
0.76
0.75
0.74
4
0.82
0.78
0.74
0.73
0.72
0.72
5
0.80
0.76
0.72
0.71
0.70
0.70
6
0.79
0.75
0.71
0.70
0.69
0.68
If the conduits or cables are spaced 10" vertically and horizontally, no correction need be applied in any case.
5kV thru 35kV
SINGLE CONDUCTOR CABLE AMPACITIES
Copper Conductors
Underground in Ducts - One Single Per Duct
Conductor
Size
(AWG/
kcmil)
Direct Buried
In Air
1 Circuit
Fig. 1
2 Circuits
Fig. 2
4 Circuits
Fig. 3
1 Circuit
Fig. 7
2 Circuits
Load Factor
Load Factor
Load Factor
Load Factor
Load Factor
50
75
100
50
75 100 50
75 100 50
Fig. 8
75 100 50
75 100
Fig. 11
Fig. 11
Indoor
Outdoor
6
121 115 108 115 105 96 105 92 80 161 135 108 156 122 98
118
149
4
158 149 140 149 136 123 136 118 103 211 171 137 204 155 124
155
197
2
209 196 183 196 178 160 176 152 132 266 218 175 257 197 158
206
250
1
239 224 209 224 202 181 201 172 149 305 246 197 294 223 178
237
288
1/0
273 256 237 255 230 206 228 195 168 349 277 223 333 251 201
272
332
2/0
312 292 270 291 261 233 259 221 190 400 312 251 376 283 226
314
383
3/0
357 333 308 332 297 265 295 251 215 458 352 282 424 318 254
361
441
4/0
409 380 350 379 338 300 335 284 243 525 397 318 478 359 286
417
509
250
451 419 385 418 371 329 368 311 265 574 433 347 522 391 312
463
562
350
549 507 465 506 447 394 443 372 316 684 515 412 621 464 370
570
692
500
676 621 566 619 543 477 538 448 380 823 618 493 745 556 443
712
863
5kV thru 35kV
Copper Conductors Continued
Conductor
Size
(AWG/
kcmil)
Direct Buried
In Air
1 Circuit
Fig. 1
2 Circuits
Fig. 2
4 Circuits
Fig. 3
1 Circuit
Fig. 7
2 Circuits
Load Factor
Load Factor
Load Factor
Load Factor
Load Factor
50
75
100
50
75 100 50
75 100 50
Fig. 8
75 100 50
75 100
Fig. 11
Fig. 11
Indoor
Outdoor
750
849 775 703 773 674 588 667 552 464 1010 757 604 912 680 541
907
1082
1000
995 905 818 901 782 680 772 636 534 1162 870 694 1048 780 620
1079
1279
1250
1121 1016 914 1011 873 756 862 706 591 1290 964 768 1162 863 686
1231
1455
1500
1230 1110 997 1105 950 821 938 766 640 1398 1043 831 1258 934 741
1364
1609
1750
1325 1193 1068 1187 1017 877 1003 816 681 1492 1112 885 1340 994 789
1485
1747
2000
1409 1265 1131 1258 1075 926 1060 860 716 1572 1171 931 1411 1046 830
1593
1871
Aluminum Conductors
Direct Buried
In Air
1 Circuit
Fig. 1
2 Circuits
Fig. 2
4 Circuits
Fig. 3
1 Circuit
Fig. 7
2 Circuits
Fig. 8
Load Factor
Load Factor
Load Factor
Load Factor
Load Factor
kcmil)
50
75
100
50
75
100
50
75
100
50
75
100
50
75
Fig. 11
100 Indoor
6
92
88
83
88
81
74
81
71
62
128 104
84
124
95
76
90
118
4
121 114 108 114 105
95
104
91
80
168 133 107 161 121
97
119
157
2
161 152 142 152 137 124 137 118 102 210 169 136 202 154 123
159
197
1
185 173 161 173 156 141 155 134 115 240 191 153 229 173 139
184
228
1/0
211 198 184 197 178 160 177 151 131 275 216 173 259 195 156
211
262
2/0
241 226 209 225 202 181 201 172 148 315 243 195 292 220 176
243
302
3/0
276 258 238 257 230 205 228 194 167 361 274 220 330 248 198
281
349
4/0
317 295 272 294 262 233 260 220 188 409 309 247 372 279 223
324
403
250
350 325 299 324 288 255 286 241 206 447 337 270 406 304 243
360
447
350
427 394 362 393 348 307 344 289 246 534 402 321 484 362 289
445
549
500
527 484 442 483 424 372 419 350 296 644 483 386 583 435 346
558
687
750
670 612 555 609 531 463 524 434
Conductor
Size
(AWG/
Fig. 11
Outdoor
5kV thru 35kV
TRIPLEXED OR PARALLELED CABLE AMPACITIES SINGLE CONDUCTORS
Copper Conductors
Underground in Ducts - Three 1/C Cable Per Duct
1 Circuit
Fig. 4
2 Circuits
Fig. 5
In Air
Circuit
Three Singles
4 Circuits
Fig. 6
Conductor
Load Factor Load Factor Load Factor
Size
(AWG/
kcmil)
Direct Buried Three 1/C Cable Per
1 Circuit
Fig. 9
2 Circuits
Fig. 10
Load Factor
Load Factor
Fig. 12 Fig. 12
50 75 100 50 75 100 50 75 100
50
75
100
50
75
100
6
101 97 92 97 91 84 91 81 73
139
114
92
135
104
83
101
130
4
131 125 119 126 117 108 117 105 93
182
146
117
175
132
105
133
171
2
174 166 156 167 154 141 154 136 120
234
189
152
224
170
136
179
219
1
199 189 178 190 175 160 175 154 135
268
214
172
254
192
153
205
252
1/0
227 215 202 216 199 181 198 174 153
306
242
194
287
216
173
235
289
2/0
259 245 230 246 226 205 225 197 173
351
273
219
324
244
195
270
332
3/0
295 279 261 280 256 233 256 223 195
402
308
247
366
275
220
311
382
4/0
337 317 297 319 291 264 290 253 221
460
349
279
413
310
248
358
439
250
372 350 326 352 320 289 319 277 241
504
382
306
452
339
271
398
485
350
450 422 392 424 384 346 383 331 287
603
455
364
539
404
322
488
594
500
549 513 475 516 465 417 463 398 344
727
547
437
647
483
385
605
735
750
680 633 584 636 571 510 568 485 418
892
671
536
791
590
470
760
905
1000
786 728 670 733 654 582 651 533 474
1023
767
612
903
672
535
893
1056
Indoor Outdoor
Aluminum Conductor
Underground in Ducts - Three 1/C Cable Per Duct
Conductor
Size
(AWG/
kcmil)
1 Circuit
Fig. 4
Load Factor
2 Circuits
Fig. 5
Load Factor
4 Circuits
Fig. 6
Load Factor
Direct Buried Three 1/C Cable
In Air
Per Circuit
Three Singles
1 Circuit
Fig. 9
Load Factor
2 Circuits
Fig. 10
Load Factor
Fig. 12 Fig. 12
Indoor Outdoor
50
75 100 50
75 100 50
75 100
50
75
100
50
75
100
6
76
73
70
74
69
64
69
62
56
109
88
71
105
80
64
77
101
4
99
95
90
96
89
83
89
80
71
142
112
90
135
102
81
101
133
2
134 127 120 128 118 109 118 105 93
182
146
118
173
131
105
137
171
1
153 145 137 146 135 123 134 119 105 208
165
133
196
148
119
157
197
1/0
174 165 156 166 153 140 153 134 118 239
187
150
222
167
134
181
226
2/0
199 188 177 189 174 158 173 152 134 273
211
169
250
189
151
208
260
3/0
227 215 201 216 198 180 197 173 151 313
238
191
283
213
170
239
299
4/0
260 245 229 246 225 204 224 196 171 356
270
216
320
241
192
276
344
250
286 270 252 271 247 224 246 214 187 390
295
236
350
263
210
307
381
350
349 327 304 329 298 269 297 257 223 468
353
283
419
314
250
378
467
500
428 400 371 402 363 326 361 311 269 567
427
341
506
378
301
472
581
750
539 501 463 504 452 404 449 384 330 704
528
421
624
465
370
608
743
1000
629 584 537 587 524 466 520 442 379 819
614
490
724
539
429
717
855
5kV thru 35kV
THREE CONDUCTOR CABLE AMPACITIES
Copper Conductors
Underground in Ducts - One 3/C Cable Per Duct
Conductor
Size
(AWG/
kcmil)
2 Circuits
Fig. 5
Load Factor
1 Circuit
Fig. 4
Load Factor
4 Circuits
Fig. 6
Load Factor
Direct Buried One 3/C Cable
Per Circuit
1 Circuit
Fig. 9
Load Factor
In Air
One 3/C Cable
2 Circuits
Fig. 10
Load Factor
75 100 50
75 100
Fig. 12 Fig. 12
Indoor Outdoor
50
75
100
50
75
100
50
75
100
50
6
97
93
89
84
88
82
88
79
71
126 114 92 123 103 83
95
112
4
125 120 114 121 113 105 113 102
91
161 145 117 157 131 106
123
144
2
166 158 150 159 148 136 147 131 117 210 188 152 203 169 136
164
187
1
189 180 170 181 168 154 167 149 132 240 212 172 232 190 153
188
214
1/0
215 205 193 206 190 175 190 169 149 274 240 194 265 215 173
215
245
2/0
245 233 220 234 216 198 216 191 169 313 270 219 302 242 195
247
280
3/0
277 263 248 265 244 223 244 215 190 353 306 247 340 273 220
280
315
4/0
316 300 282 301 277 253 276 243 214 403 345 279 288 308 248
321
361
250
348 330 310 331 304 277 303 267 234 445 378 305 428 337 270
355
399
350
420 397 372 399 365 332 364 318 279 540 451 364 518 400 321
433
485
500
511 482 450 484 441 399 439 383 334 662 541 436 633 479 384
534
595
750
632 593 552 596 541 488 538 466 405 820 664 534 773 585 469
667
735
1000
729 682 633 686 620 557 616 531 460 952 758 610 883 666 533
779
852
Aluminum Conductors
Underground in Ducts - One 3/C Cable Per Duct
2 Circuits
Conductor
1 Circuit
Fig. 5
Size
Fig. 4
(AWG/
Load Factor Load Factor
kcmil)
Direct Buried One 3/C
Cable
Per Circuit
In Air
One 3/C Cable
1 Circuit
Fig. 9
4 Circuits
Fig. 6
Load Factor
2 Circuits
Fig. 10
Load Factor Load Factor
Fig. 12 Fig. 12
Indoor Outdoor
50
75 100 50
75 100 50
75
100
50
75 100 50
75 100
6
74
71
70
71
67
64
67
61
56
98
87
79
64
72
87
4
96
92
90
92
87
83
87
78
72
127 112 90 123 101 81
94
113
2
127 122 115 122 114 105 113 101
90
162 145 117 157 130 105
126
145
1
145 138 131 139 129 119 129 115
102
186 164 133 180 147 119
144
166
1/0
165 158 149 158 147 135 146 130
11 5
212 185 150 205 166 134
165
190
2/0
188 179 169 180 167 153 166 147
130
243 209 169 234 187 151
190
217
3/0
215 204 192 205 189 173 189 167
147
277 236 191 267 211 170
217
249
4/0
245 232 219 233 215 197 214 189
166
317 267 216 305 239 192
250
285
250
268 254 239 255 235 215 234 206
181
345 292 236 332 261 210
274
310
350
325 308 289 309 283 258 282 247
217
421 350 282 404 311 250
336
378
500
398 375 351 377 344 312 342 298
261
518 422 340 493 375 301
416
467
750
500 470 437 472 428 386 425 368
320
656 522 420 609 461 369
530
592
1000
583 546 507 548 496 446 492 425
368
764 607 488 706 534 427
624
686
71
95
46kV thru 69kV
Copper Conductors
2 Circuits
Fig. 2
Load Factor
4 Circuits
Fig. 3
Load Factor
1 Circuit
Fig. 7
Load Factor
2 Circuits
Fig. 8
Load Factor
100
50
75
50
50
50
1 Circuit
Fig. 1
Load Factor
Conductor
Size
(AWG/
kcmil)
50
75
In Air
Direct Buried
100
75 100
75
100
75
100
Fig. 11 Fig. 11
Indoor Outdoor
4/0
405
377
348
375
335 297 330 280 239 476
398 321 459
359 288
404
450
250
446
414
381
412
367 325 362 306 261 524
434 350 505
391 313
447
498
350
541
500
459
497
440 389 434 365 311 638
516 415 612
464 371
548
612
500
662
610
557
606
534 470 526 439 372 786
618 497 735
555 444
680
760
750
831
761
692
756
661 579 650 539 455 990
756 607 900
677 541
868
968
1000
972
886
803
879
765 667 751 620 522 1147 868 695 1034 776 620 1029
1147
1250
1087 989
893
981
851 740 834 686 576 1271 961 770 1144 858 685 1160
1285
1500
1190 1079 973 1070 925 803 905 743 623 1378 1040 832 1238 927 740 1282
1420
1750
1280 1158 1042 1148 989 856 967 791 662 1469 1107 885 1318 987 787 1391
1540
2000
1360 1227 1102 1215 1045 903 1021 833 696 1548 1165 931 1388 1038 827 1489
1647
Aluminum Conductors
In Air
Direct Buried
1 Circuit
Fig. 1
2 Circuits
Fig. 2
4 Circuits
Fig. 3
1 Circuit
Fig. 7
2 Circuits
Fig. 8
Load Factor
Load Factor
Load Factor
50
50
Conductor
Size
(AWG/
kcmil)
Load Factor
Load Factor
50
75
50
4/0
316
294 271 292 261 232 258 218 187 371 310 251 258 280 225
315
351
250
348
323 297 321 286 254 282 238 204 409 339 273 394 305 245
349
389
350
422
390 358 388 344 304 339 285 242 498 403 324 478 362 348
428
478
500
518
477 436 474 418 367 411 344 291 615 484 389 575 434 390
532
595
750
655
599 545 595 521 456 512 425 358 780 596 478 709 533 426
684
764
1000
770
702 636 697 607 529 595 492 424 909 689 552 819 616 492
816
909
1250
869
790 714 784 680 591 666 548 461 1016 769 616 915 687 548
927
1027
1500
960
871 785 863 746 647 730 599 502 1112 839 672 999 749 597
1034
1146
1750
1043 943 848 935 806 697 788 644 539 1197 902 722 1074 804 641
1133
1255
2000
1118 1009 906 1000 859 742 839 685 572 1273 959 767 1142 854 681
1225
1355
100
75 100 50
75 100
75 100
75 100
Fig. 11 Fig. 11
Indoor Outdoor
115kV thru 138kV
Copper Conductors
Conductor
Size
(AWG/
Direct Buried
In Air
1 Circuit
Fig. 1
2 Circuits
Fig. 2
4 Circuits
Fig. 3
1 Circuit
Fig. 7
2 Circuits
Fig. 8
Load Factor
Load Factor
Load Factor
Load Factor
Load Factor
50
50
kcmil)
75 100 50
75 100
75
100
75
100
Fig. 11
Fig. 11
50
75
100
50
500
663
584
535
574 507 447 486 408 347 726
605 491 696
540 436
645
690
750
790
726
662
711 625 549 596 497 421 912
739 598 856
658 530
819
877
1000
921
843
766
824 720 631 684 568 479 1068 847 685 982
753 606
966
1035
1250
1032 942
854
919 801 699 757 626 527 1202 937 756 1086 831 668
1095
1173
1500
1127 1026 928 1000 868 756 818 674 566 1311 1012 817 1174 897 720
1208
1294
1750
1210 1099 992 1069 926 805 869 715 599 1398 1076 868 1250 953 765
1309
1401
2000
1238 1163 1048 1130 976 847 913 749 627 1473 1132 912 1314 1001 803
1399
1497
Indoor Outdoor
Aluminum Conductors
Conductor
Size
(AWG/
kcmil)
1 Circuit
Fig. 1
Load Factor
50
2 Circuits
Fig. 2
Load Factor
75 100 50
4 Circuits
Fig. 3
Load Factor
75 100 50
75 100
Direct Buried
In Air
1 Circuit
Fig. 7
Load Factor
2 Circuits
Fig. 8
Load Factor
50
50
75 100
75 100
Fig. 11 Fig. 11
Indoor Outdoor
500
495 457 419 449 397 350 381 319 272 568 474 385 545 423 342
505
540
750
622 572 522 560 492 432 470 391 331 719 582 471 674 518 418
645
691
1000
730 668 608 653 571 500 542 450 380 847 671 543 778 597 481
766
821
1250
825 753 683 735 640 558 605 500 421 961 749 605 868 665 535
875
938
1500
910 828 749 807 700 610 660 544 457 1058 817 659 948 724 582
975
1044
1750
986 895 808 871 754 655 708 582 488 1139 877 708 1018 777 624
1066
1142
2000
1055 957 862 929 803 696 751 616 516 1211 931 751 1081 824 661
1150
1232
INSTRUCTION FOR TERMINATING & SPLICING
The Kerite Company has developed a complete line of taped splices and terminations for all
voltage classes of Kerite cables. These splice and termination designs are the result of years of
field experience and overvoltage testing at our Proving Grounds.
Although in most cases experienced personnel are employed in making up splices and
terminations, certain guidelines and instructions are in order. These are included on the back of
each splice and termination print. The applicable prints for various cable designs are available from
a Kerite representative.
Commercially available pre-molded, cold or heat-shrink splices and terminations may be used on
Kerite cables. Our evaluation of many devices show, when they are installed per the manufacturer’s
instructions, they do not affect the cable’s performance. However, the Kerite Company has no
control over the design, manufacture or use of these splices and terminations, therefore, we cannot
assume any liability for their performance.
Methods for Stripping of FR, PVC and PE Jackets and Lead Sheaths
1. All jackets and lead sheaths should be stripped using the "tear-strip" technique. This consists of
making two parallel scoring cuts between 1/4 " and 1" apart followed by ripping out the strip of
jacket between, and then removing the remainder. The depth of the cut necessary is approximately
half-way through the jacket or layer.
2. The preferred method of making the scoring cuts with any kind of knife is to hold the knife straight
in toward the cable, contrary to the method used in stripping braids and tapes.
3. Similar scoring and ripping may also be used circumferentially at the terminus of the stripped
portion.
4. The circumferential cutting of thin plastic layers either over tapes or the Kerite insulation can be
neatly accomplished by using a narrow strip of abrasive cloth or any heavy string or twine as a wraparound abrading tool. The heat generated by a see-saw motion of the string will cut a neat furrow in
the plastic without loosening its ends or risk of cutting the underlying material.
5. For the stripping of braid, it is recommended that a light score be made on the braid followed by
subsequent light strokes with the knife held flat to the cable surface.
SPLICE AND TERMINATION PRINTS REFERENCE
Splice and termination prints can be ordered from Kerite by requesting the appropriate prints and
instruction. The numbering system is as follows:
Type
Splice = S
Indoor
Termination = IT
Outdoor
Termination = OT
Voltage
Cable Design
Shield
Non-Shielded = NS
5kV = 5
8kV = 8
15kV = 15
25kV = 25
35kV = 35
46kV = 46
69kV = 69
115kV = 138
138kV = 138
Single
Permashield = SP
Double or Triple
Permashield = P
Metal Tape = MT
Concentric
Wires = CW
Wire Braid = WB
Lead Sheath = LS
Example: A splice print for a 15kV single Permashield tape shielded cable is as follows: S-15-SPMT
A splice print for a 35kV single Permashield tape shielded with concentrics cable is as follows: S-35-SPMT-CW
METHODS FOR STRIPPING METAL TAPE
Scissors Technique
The scissors-cut technique is the preferred method of stripping metal tape at the overlapped end
(the tape will unwrap from the end of the cable).
Figure 1
Circumferentially mark the intended end point of metal tape. Unwrap from cable ends one to two
turns beyond the mark. Hold the tape out from cable and cut along mark with scissors. Round off
sharp point. Rewrap and hold in place with turn of vinyl tape set 1/4" back from edge.
FIGURE 1
SCISSORS
TECHNIQUE
At the Overlapped
Tape End
Knife Technique
Recommended at underlapped metal tape end or if no scissors are available.
Figure 2
At end with underlapped tape, apply friction tape binder at the intended end point of metal tape as
shown in sketch. Score through outer layer of metal tape along edge of friction binder only in that
area where metal tape is lapped to prevent cutting into underlying insulation. Lift corner tab and tear
around circumference guided by friction binder, remove binder and tamp down the tape edge to lay
flat. To prevent metal tape from accidentally loosening over a long length of cable having no outer
covering, apply a friction tape binder 3" beyond end point of metal tape before staring stripping
procedures.
FIGURE 2
KNIFE TECHNIQUE
At the End with
Underlapped Tape
Figure 3
At end with overlapped tape, apply binder so edge of friction tape is at the intended end point of
metal tape as shown in Figure 3. Cut at lap as above. Lift tab and tear metal tape around the
circumference along edge of binder. Fold or cut off sharp point of tape and rewrap onto cable. Hold
in place with a turn of vinyl tape set 1/4" back from end. Remove friction binder and unwanted metal
tape, then tamp torn edge to lay flat.
FIGURE 3
KNIFE TECHNIQUE
At the End with
Overlapped Tape
Connectors
It is recommended that compression connectors be used whenever possible in Kerite splices. They
are simple to install, reliable, and reproducible (not subject to wide variation in technique.)
Although solder joints have not shown evidence of electrical problems on any Kerite cables to date,
it is conceivable that poor technique could overheat the cable at the joints. Consequently, because
of the wide variation in soldering techniques possible in the field, we have recommended the use of
compression type connectors.
In those situations where solder connections are used, the following procedure is recommended to
assure a higher degree of confidence in the joints.
1. The insulation should not be tapered prior to the soldering operation.
2. A layer of cotton tape should be applied over the insulation binding it down firmly to the conductor
approximately 5" back from the splice on either side of the connector. This will improve the heat
transfer from the conductor to the insulation, and shorten the cooling time.
3. Heat resistant tape or cord should be applied between the connector edge and the insulation
edge to prevent the molten solder from directly contacting the insulation.
PULLING COMPOUNDS
Recommendations of pulling compounds are based on two factors: first, that they act as lubricants
to reduce the coefficient of friction between the cable and duct surfaces and; second, that they
contain no ingredients which will attack the cable materials.
There are literally dozens of pulling compounds on the market which meet the first criterion of
lubricity. However, many of these contain chemicals which, with time and at operating
temperatures, will attack many of the commonly used jacket and insulation materials. The effect of
the attack may be the degradation of either physical or electrical properties or both. Physically, the
attacked material may become swollen, or embrittled, or suffer reduction in tensile strength,
elongation, and thermal-environmental stress crack resistance. Electrically, the insulation resistance
may fall to unacceptable levels, or the dielectric losses may increase to prohibitive levels.
The following ready-to-use pulling compounds may be used with all Kerite cables.
1. Polywater "A", "G", "J" or "WJ" lubricants (Polywater Corp.): "A" is general purpose summer
grade. "G" is a water based gel lubricant for hands-on application of heavy coating and is a summer
grade. "J" and "WJ" are water based gel lubricants suitable for use down to -10°F (-23°C).
2. Plymouth/Bishop No. 45 Cable Pulling Lubricant (Plymouth Rubber Co.) is summer grade
material limited to use at temperatures above freezing.
3. MacLube No. CA-51 (Mac Products, Inc.) is a winter grade lubricant suitable for use at all
temperatures down to 0°F (-18°C).
4. Minerallac H-2B (Minerallac Electric Co.) is a summer grade lubricant, limited to use at
temperatures above freezing.
5. Winter grade No. 7437-PC, (General Machine Products Co.) is a winter grade lubricant suitable
for use at all temperatures down to 0°F (-18°C).
6. Gel-Lube 7/5 (Cable Associates, Inc.) is a winter grade lubricant suitable for use down to 0°F (18°C).
7. Slip X-300 compound (American Cable Colloid Co.) winter grade compound suitable for use at all
temperatures down to 0°F (-18°C).
8. Aqua-Gel II (Ideal Industries, Inc.) is a summer grade lubricant limited to use at temperatures
above freezing.
9. Aqua-Gel CW (Ideal Industries, Inc.) is a winter grade lubricant suitable for use at all
temperatures down to -25°F (-32°C).
Inasmuch as the Kerite Company has no control over the manufacture or use of these compounds,
it assumes no liability for same.
MINIMUM BENDING RADIUS
Installed Cable
The minimum bending radius for training/positioning should not be less than the figure determined
from the table below.
Shielded Cable & Interlocked Armor Cable
All Voltages
------------------------------------------------------------The Greater Of:
12 x Single Conductor Outside Diameter
7 x Multi-Conductor Assembled Outside Diameter
Non-Shielded Cable
Single and Multiple Conductor-All voltages
600V
2kV
5kV
8 kV
Through 500 kcmil
3
3
4
6 x Outside
Diameter
600-1750 kcmil
4
4
5
7 x Outside
Diameter
2000 kcmil and above
5
5
6
8 x Outside
Diameter
During Installation
Cable should not be pulled with a radius less than that determined for the installed cable. Due to
limitation of side bearing pressure, it is recommended that larger radius bends be used.
CONTINUOUS SUPPORT OF CABLES
For installed cables, certain mechanical and physical restrictions must be taken into consideration.
Formulas for calculating the maximum weights under various installation conditions follow.
Continuous Vertical Support
Support by Conductor
The maximum weight in lbs. to be supported by the conductor is:
Wmax = K x CM
where:
K = .004 for soft copper
K = .003 for aluminum (1350 H19)
CM = Circular mil area of cable involved
The above is based on limiting the working load of soft copper to about 5,000 lb./sq. in. and the
aluminum to about 4,000 lbs/sq. in., thus giving a safety factor of about seven.
Support by Bend at Top (or Bottom)
Maximum weight of cable in pounds to be supported when cable hangs on a bend. (Note: Support by
conductor maximums may be more limiting.)
Conduit Bends
• For a single conductor cable in a conduit of diameter no greater than 2 times the cable OD: Wmax
of 1/C cable = 25 x R x D1
• For 3 1/C cables in parallel (not twisted), with 2 cables on bend surface and third above: Wmax of
3 cables = 37.5 x R x D1
• For 3 1/C cables twisted (triplexed):
Wmax of 3 cables = 10 x R x D1
• For 3/C cables with overall cover:
Wmax of 3/C cable = 10 x R x D3
where: Wmax = Maximum weight of cable in pounds
R = Radius of bend, conduit or support surface in inches
D1 = Single conductor O.D. in inches
D3 = Three conductor O.D. in inches
Tray or other flat surface bends
Use one-half of the values for the appropriate conduit bends, except for 3 1/C cables in parallel. For 3
1/C cables in parallel use one-half the value of a single conductor cable in a conduit. This assumes
that all 3 1/C cables are lying on bend surface, not stacked on other cables.
Care must be taken that the cable is secured in the horizontal portion immediately before the
supporting bend to prevent ratcheting and build-up of tensions in the cable on load cycling.
The above formulas are based on limiting pressure on the cable surface to 50 lbs./sq. in., assuming
contact width of 1/2 cable diameter when in conduit and 1/4 cable diameter when on flat bend.
Assumed factor of 0.4 to account for intermittent contact on three conductor twisted cables. The
pressure in lbs./sq. in. on a single conductor cable is:
P = Tension
RxW
where:
P = Pressure on single conductor cable in lbs/sq. ft.
R = Radius of bend in inches
W = Contact width in inches
Cable in Grips
Continuous cable support by grips requires transfer of lifting forces to the load bearing components of
the cable (conductors, concentric wires or armor wires) without physical damage to the insulation,
shielding tapes, outer jacket, etc. Adequate force transfer is depending on many variables, the most
important of which is a sufficiently high coefficient of friction at all interfaces between the grip mesh
and the load bearing component(s) of the cable. If any such interface has a coefficient of friction less
than 0.25, the weight of the cable supported by a conventional Kellems grip alone shall be limited to
50 pounds. If the cable support is partially horizontal (as in a cable tray at the upper end of a vertical
run), the limit is determined by the use of equations under "Support by Bend (Top or Bottom)," plus
the 50 pounds limit for intervals between grips. Typical slippery interfaces include:
Permashield and conducting fabric tape.
Metal tapes and conducting fabric tape
Metal tapes and bedding tapes.
Any interface involving a polyester tape.
For cables with acceptable coefficients of friction, the allowable loading per grip must be less than the
maximum load based on the strength of the conductors or other load bearing components, and also
less than the maximum load based on the ability of the cable to resist compressive forces developed
by the grip.
When more than one grip is used in a vertical support arrangement, it is imperative that each grip
carry only its own share of the load. Usually the lowermost grip is applied first, and the cable lowered
until the grip "grabs". The next higher grip is then applied, the cable lowered into it, and so on until the
uppermost grip is applied last of all.
Maximum Load Based on the Strength of Load Bearing Components
Wmax = K x CM
Wmax = Maximum allowable total weight per grip
where: K = .004 for soft copper
K = .003 for aluminum (1350 H19)
CM = The total circular mil area of all load bearing components to which there is adequate force
transfer. For more than one cable/grip, total the CM of all cables.
Maximum Load Based on Ability to Resist Compressive Forces
Compressive forces caused by the grip result in pressure under the grip wires which tend to make
them penetrate into the cable. The magnitude of this pressure is related to many variables including
the load on the grip, size and geometry of the grip, the number of cables per grip, and the diameter of
each cable. For cables with concentric wires the effects of "bridging" of the grip over the concentrics
must also be considered. The following formulas allow a solution for Wmax:
Wmax for cables with an outer finish on concentric wires and
In the above formulas:
d = Diameter of concentric wires or width of flat concentrics (inches)
D = The diameter of one cable (inches)
DList = The smallest rated cable diameter for which the grip is designed (inches). (See
manufacturer’s recommendations)
LLay = Lay length of concentric wires (inches)
n = Number of concentric wires on one cable
Pmax = The maximum pressure under the grip wires or con-centric
wires = 200 lbs/in.2 for most finishes excluding those previously referenced
Wmax = Maximum allowable total weight per grip (lbs.)
*If is > 0.75, treat as cable without concentric wires.
Cable in Block Clamps
Maximum support to be expected per block clamp is 50 lbs. Bearing surface must equal or be greater
than the cable diameter but not less than 1 1 /2".
Support by Messenger
We do not recommend that self-supporting cables be hung vertically by the messenger. However,
there are messenger grip assemblies available which may be used. Spacing of grips to be governed
by previous paragraph on "Cables in Grips".
Continuous Horizontal Support
Cable on Porcelain or Block Cup Supports
The maximum distance between supports (in feet) is given by the following:
L = 12.5 x s x D
W
where: S = Length of support in inches
D = Diameter of cable in inches
W = Weight of cable in lbs./ft.
The above is based on limiting the cable pressure to 25 lbs./ sq. in. (to account for the cable resting
on the edges of the support) and assuming a contact width of 1/2 the cable diameter. More frequent
supports may be desirable, depending on the installation from an appearance viewpoint.
Cables in Trays
The maximum weight (per foot of cable tray) that can be installed on top of a bottom cable resting
against cable tray rungs is calculated as follows:
(1) Weight (per foot of cable tray) = 12.5 x s x D for a 12 inch rung spacing
(2) Weight (per foot of cable tray) = 16.5 x s x D for a 9 inch rung spacing
(3) Weight (per foot of cable tray) = 150 x D for a solid bottom tray
where: s = Rung width in inches
D = Diameter of cable in inches
Weight is in pounds
The above is based on limiting the cable pressure to 50 lbs./ sq. in. and assuming a contact width of 1
/4 cable diameter.
CONDUIT AND DUCT SIZES
In general it is recommended that conduit sizes be governed by the National Electrical Code.
Unless strict adherence to NEC is specified, larger conduit sizes may be governed by the
determination of 1/2 " clearance between the conduit inside diameter and the circumscribing
diameter of the installed cable(s).
Formulas for computing the minimum conduit inside diameter based on the above rules are shown
below.
POWER CABLE CONDUIT AND DUCT SELECTION
Number of Cables
Per Conduit
One
Two
Three
Four or More
National Electrical Code
Max Percent
Occupancy
Calculation
Formulas
Non-leaded
53%
D = 1.374 x d
Lead Covered
55%
D = 1.348 x d
Non-leaded
31%
D = 2.540 x d
Lead Covered
30%
D = 2.582 x d
All Types
40%
Non-Leaded
40%
Standard Utility
Calculation Method
2" and Larger Conduits
D = 0.500 + d
D = 0.500 + (2 x d)
D = 2.739 x d
D = 0.500 + (2.155 x d)
D = 1.581 x ÖN x d
D = 0.500 + (F x d)
D = Minimum conduit I.D. (inches). Select nearest trade size conduit that is larger than the computed figure for D.
d = Individual cable O.D.
N = Number of individual cables in same conduit.
F = Multiplying factor for computing circumscribing diameter over multiple conductor cables.
N
F
2
2.000
3
2.155
4
2.414
5
2.700
6 or 7
3.000
CAUTION:
When installing three or more parallel cables in the same conduit, avoid ratios of 2.8 to 3.1 (Ratio of
conduit I.D. to one cable O.D.) to minimize potential jamming. This caution does not apply to
twisted assemblies (triplexed, quadruplexed, etc.) in normal installations, but should be considered
when multiple bends occur in the same conduit or long, difficult pulls are anticipated.
APPROXIMATE MAXIMUM ALLOWABLE CABLE DIAMETERS (IN INCHES)
Per NEC
Conduit
Internal
Conduit
Trade
Diameter
Area
1
Size
(Inches)
(Sq. Inches)
Conductor
Per 1/2" Clearance
3 or more
3
Conductor
1
3
parallel
Conductor
Conductor
(AVOID)
Steel or Schedule 40 PVC
1/2
0.602
0.29
0.44
0.22
—
—
0.19-0.22
3/4
0.804
0.51
0.59
0.29
—
—
0.26-0.29
1
1.029
0.83
0.75
0.38
—
—
0.33-0.37
11/4
1.360
1.45
0.99
0.50
—
—
0.44-0.49
11/2
1.590
1.99
1.16
0.58
—
—
0.51-0.57
2
2.047
3.29
1.49
0.75
1.55
0.72
0.61-0.73
21/2
2.445
4.70
1.75
0.89
1.95
0.90
0.79-0.87
3
3.042
7.27
2.21
1.11
2.54
1.18
0.98-1.09
31/2
3.521
9.74
2.56
1.29
3.02
1.40
1.14-1.26
4
3.998
12.55
2.91
1.46
3.50
1.62
1.29-1.43
5
5.016
19.76
3.65
1.83
4.52
2.10
1.62-1.79
6
6.031
25.57
4.39
2.20
5.53
2.57
1.95-2.15
Cement Conduit or Duct
2
1.9
2.84
1.38
0.69
1.40
0.65
0.61-0.68
3
2.9
6.61
2.11
1.06
2.40
1.11
0.94-1.04
31/2
3.4
9.08
2.48
1.24
2.90
1.35
1.10-1.21
4
3.9
11.95
2.84
1.42
3.40
1.58
1.26-1.39
41/2
4.4
15.21
3.20
1.61
3.90
1.81
1.42-1.57
5
4.9
18.86
3.57
1.79
4.40
2.04
1.58-1.75
6
5.9
27.34
4.30
2.15
5.40
2.51
1.90-2.11
Fiber Conduit or Duct
2
2.0
3.14
1.46
0.73
1.50
0.70
0.65-0.71
3
3.0
7.07
2.18
1.10
2.50
1.16
0.97-1.07
31/2
3.5
9.62
2.55
1.28
3.00
1.39
1.13-1.25
4
4.0
12.57
2.91
1.46
3.50
1.62
1.29-1.43
41/2
4.5
15.90
3.28
1.64
4.00
1.86
1.45-1.61
5
5.0
19.64
3.64
1.83
4.50
2.09
1.61-1.79
6
6.0
28.27
4.37
2.19
5.50
2.55
1.94-2.14
Example: Determine the minimum plastic conduit size for three 1/C 500 kcmil, 15kV, copper
stranded, 175 mil, 100% insulation wall, copper tape shield with a PVC jacket. The three conductors
are paralleled and the individual conductor O.D. is 1.51".
Using the first formula for three cables per conduit based on NEC requirements:
D = 2.739 x d
D = 2.739 x 1.51"
D = 4.136"
The NEC requires a 5" conduit for 1.51" diameter cable. Using the second formula based on
standard utility practice of 1/2 " clearance.
D = 0.5000" + 2.155 x d
D = 0.5000" + 2.155 x 1.51"
D = 0.5000" + 3.254"
D = 3.754"
A 4" conduit may be used for a 1.51" diameter cable.
Note: The 1.51" diameter cable does not fall into the jamming range 1.30" to 1.44" for a 4" conduit
or 1.63" to 1.80" for a 5" conduit. If it did, simply twisting the assembly or a larger conduit size would
remove this objection.
PULLING TENSIONS
The information provided herein may serve as a guide to installing cables in ducts or conduits and
is based in part on industry studies. Where experience has justified it, we have included our own
figures.
Two tension calculations are required for each cable installation. First must be calculated the
MAXIMUM ALLOWABLE TENSION for the particular cable that is to be installed. This value is
dependent upon the method of attaching to the cable, the allowable sidewall bearing pressure and
the construction of the cable.
Second, knowing the weight of the cable and the details of the conduit run the ESTIMATED
PULLING TENSION that can occur during installation is calculated and compared with the
MAXIMUM ALLOWABLE TENSION.
The following gives details for calculating each of the above tension values.
Maximum Allowable Tension
(1) Based on pull by conductor:
Tm = .008 x n x CM (applies to both annealed copper and hard drawn aluminum conductors)
Tm = maximum allowable tension in lbs.
n = number of conductors in cable (assumes equal tension in each conductor)
CM = circular mil area of each conductor.
(2) Based on pull by Kellems grip over lead sheath:
Tm = 4712 x t(D-t)
D = outside diameter of cable in inches
t = lead sheath thickness in inches.
(3) Based on pull by Kellems grip applied over:
Non-shielded, jacketed cables - 2000 lbs.*
Shielded, jacketed cables - 1000 lbs.*
* Do not exceed tension limit of Condition 1 above.
(4) Based on pull by Kellems grip applied directly on the insulation or outer Permashield ® layer of
Kerite Double Permashield ® cables after removing the shielding: 3,000 lbs. per inch of
conductor diameter.*
* Do not exceed tension limit of Condition 1 above.
(5) Based on maximum allowable side bearing pressure when pulling around a conduit bend:
(a) Single conductor or multi-conductor
Tm = 450 x D x R
Tm = maximum allowable tension on cable in lbs.
D = outside diameter of cable in inches
R = radius of bend in feet
(b) Three conductor twisted
Tm = 225 x D1 x R
(c) Three 1/C cables in parallel
Tm = 675 x D1 x R
For (b) and (c)
Tm = maximum allowable tension on three cables
D1 = diameter of one individual cable in inches
R = radius of bend in feet The actual allowable tension will be governed by the lowest of the above calculated tensions for the
method of pull selected.
Example:
Determine the maximum allowable pulling tension on three 1/C 500 kcmil copper, 15kV, 175 mil,
100% insulation wall, copper tape shield, PVC jacketed cable, paralleled, to be pulled around a 3 ft.
radius bend by Kellems grip applied over outer jackets.
Limit by Condition 1
Tm = .008 x n x CM
Tm = .008 x 3 x 500,000
Tm = 12,000 lbs.
Condition 2 does not apply
Limit by Condition 3-shielded, jacketed-1,000 lbs.
Condition 4 does not apply.
Limit by Condition 5-side bearing pressure
Tm = 675 x D1 x R
D1 = 1.51
Tm = 675 x 1.51 x 3
Tm = 3,058 lbs.
The maximum pulling tension is limited by Condition 3 -1,000 lbs.
Example:
Determine the maximum allowable pulling tension on three 1/C 500 kcmil copper, 15kV, 175 mil,
100% insulation wall, copper tape shield, PVC jacketed cable, paralleled, to be pulled by conductor
around a 3 ft. radius bend.
Limit by Condition 1
Tm = .008 x n x CM
Tm = .008 x 3 x 500,000
Tm = 12,000 lbs.
Conditions 2, 3 and 4 do not apply.
Limit by Condition 5-side bearing pressure
Tm = 675 x D1 x R
D1 = 1.51
Tm = 675 x 1.51 x 3
Tm = 3,058 lbs.
The maximum pulling tension is limited by Condition 5 -3,058 lbs.
Estimated pulling tension must be calculated to ensure it does not exceed the maximum allowable
pulling tension.
Estimated Pulling Tension
Pulling tensions anticipated for an installation are governed by cable size and weight, length of run,
number and angle of bends. Usually only approximations can be made, the following simple
assumptions provide safe guideline limits.
Calculation of Tension
(1) Straight horizontal run:
T = W x L x n x C.F.
where:
T = tension in lbs.
W = cable weight in lbs./ft.
L = length of run in ft.
n = number of cables
C.F.= coefficient of friction
The coefficient of friction will vary between 0.3 for well lubricated cables pulled into new, smooth
wall conduits to 0.5 for lubricated cables pulled into rough or dirty conduits or ducts.
(2) Pulls around static bends:
Multiplying factors, shown below, must be used to estimate the increase in tension due to pulling
around bends. The tension at the point just ahead of the bend is multiplied by the appropriate factor
from the table below, the product being the tension that exists immediately past the bend. This
factor must be applied in the calculation of the estimated pulling tension at each point where the
cable encounters a bend as it is pulled through the duct or conduit run.
Multiplying Factor
Angle of Bend in Degrees
Coefficient
of Friction
15
30
45
60
75
90
0.30
1.08
1.17
1.27
1.37
1.48
1.60
0.40
1.11
1.23
1.37
1.52
1.69
1.87
0.50
1.14
1.30
1.48
1.69
1.92
2.19
Example:
Determine the tension required to pull three 1/C 500 kcmil copper, 15kV, 175 mil insulation wall,
copper tape shield, PVC jacketed cable, in a horizontal duct as shown below.
For pull A to B:
TB = W x L x n x C.F.
W = 2.346 lbs./ft. of 1/C cable
L = 350 ft.
n =3
C.F.= 0.4 (assume average condition of duct wall)
TB = 2.346 x 350 x 3 x 0.4 = 985 lbs.
For pull B to C:
TC =TB x Multiplying Factor for 90° Bend
TC = 985 x 1.87
TC = 1,842 lbs.
For pull C to D:
TD = W x L x n x C.F. + TC
TD = 2.346 x 50 x 3 x 0.4 + 1.842
TD = 141 + 1,842 = 1,983 lbs.
Alternative Set-up
Assume pay off reel at D.
For pull D to C:
TC = W x L x n x C.F.
TC = 2.346 x 50 x 3 x 0.4
TC = 141 lbs.
For pull C to B:
TB =TC x Multiplying Factor for 90° Bend
TB = 141 x 1.87
TB = 264 lbs.
For pull B to A:
TA = W x L x n x C.F. + TB
TA = 2.346 x 350 x 3 x 0.4 + 264
TA = 985 + 264 + 1,249 lbs.
Result:
Pull by Kellems grip over the jacket is not allowed (1,000 lbs. maximum versus calculated pulling
tension of 1,983 lbs. or 1,249 lbs. depending upon direction of pull). Pull by conductor is allowed.
Tension is less when pay-off reel is at the "D" end nearest the bend location.
The above calculations are based on the use of an approved pulling compound on the entire
surface of the cable with approximately 1/16 " layer of compound to be applied as the cable enters
the duct or conduit.
GROUND METHODS AND MATERIALS
Tape Shields
Based upon field observation, and experience of our Proving Ground, we have concluded that
permanent grounds are best assured by tack soldering to the cable metal tape. Whether a clamp,
strap or flexible braid is used, it is best to take solder to the metal tape in order to assure good
conditions since temperature cycling may loosen the mechanical grip and corrosion may reduce the
contact surfaces of the metals.
If clamps are used, care is required that stiff materials or large forces do not cause pinching or other
deformation of the cable insulation or disruption of the metal tape during normal expansion due to
current loading. Clamps or heavy straps should be preformed around a scrap piece of cable before
final application.
When using braid or light strap, tack solder the end to the metal tape, wrap 11/4 turns around the
cable, tack solder again to the previous turn and the cable metal tape, then train the lead away from
the cable. When attaching the ground in this manner, an accidental pull on the ground lead will not
likely rip the cable metal tape.
We recommend the use of rosin core solder or stearine flux. DO NOT USE prepared paste or acid
core solder. With zinc taped cables it is necessary to limit soldering from temperature to
approximately 700°F and to use a tin-lead type solder to prevent injury to the zinc tape. Check the
solderability on a length of scrap cable. Use a soldering iron. DO NOT USE A TORCH on any metal
taped cable. A torch may seriously damage the cable.
The ground leads should have short circuit ampacity equal to or greater than the cable metal tape.
Heavy tinned copper wire braid or 1/2 " x .030" tinned copper strap are most satisfactory. Tinsel or
light copper wire braids do not have adequate ampacity and are subject to flexing fatigue and
corrosion.
Where vibration is expected, special sleeves and heavy leads may be required; refer such problems
to a Kerite representative for special recommendations.
Concentric Neutrals
Concentric neutral cables are easy to work with. The individual wires should simply be pulled back
and twisted together. The resulting wire can then be lugged to the ground conductor or point.
Sealing
For jacketed cables with shields grounded in outdoor or submersible locations, adequate seals
should be made to prevent water entering under the jacket. Sealing putty formed around the ground
leads with an overwrap of several layers of insulating tape makes an effective seal. When insulating
tape is used over metal braid, the braid must be solder filled to effect a good seal. Outdoors, ground
leads should be brought from the bottom side of horizontal cables and downward to form a drip loop
on vertical cables. Friction tape binders to secure the lead to the cable help prevent disturbing the
seal if the lead is pulled.
Grounding Practices
Ground should be applied to cable sheaths at terminals, in accordance with the appropriate terminal
instructions. Possible exceptions where only one ground is used.
• Very short lengths.
• Locations (such as pole top) where exposed grounds are not allowed.
• Situations where a sheath interruption is recommended to avoid sheath circulating current.
Where cables fan out from conduit to terminals, and grounds are to be made to the conduit, the
connections to cable sheaths may be made close to the terminals, and insulated or bare grounding
leads brought down along the cable to the conduit in an open helix around the cable, or secured
with rings of tape.
In long runs, cable may be grounded additionally between terminals according to the user’s normal
practice. Where more than one ground is applied to a cable sheath, there may be sheath currents
and consequent losses. Sometimes these losses are great enough to affect the rating of the cable,
in which case sheath interrupting joints may be considered.
For more information on shield currents and cross bonding, refer to IEEE Standard 575.
MOVEMENT, STORAGE AND HANDLING OF CABLE
Movement of Reels of Cable
1. Reels of cable must not be dropped from any height, particularly from trucks or other transporting
equipment.
2. Lift reels using following methods:
(a) Crane or boom type equipment—insert shaft (heavy rod or pipe) through reel hubs and lift with
slings on shaft, prefer-ably utilizing spreader or yoke to reduce or avoid sling pressure against reel
flange.
(b) Fork lift type of equipment may be used to move smaller, narrower width reels. Fork tines should
be placed so that lift pressure is on reel flange not on cable, and must reach all the way across
reels so lift is against both reel flanges.
3. Reels may be moved short distances by rolling. Reels should be rolled in the direction indicated
by arrows painted on reel flanges. Surfaces over which the reels are to be rolled should be firm,
clear of debris, and also clear of protruding stones, humps, etc. which might damage the cable if the
reel straddled them.
Storage of Reels of Cable
1. Cable ends are sealed prior to shipment. If factory seals are removed or damaged, new tape
seals must be applied to prevent moisture entry into cable. Strip cable finishes back 2", down to
insulation for braided or non-jacketed constructions. Then apply four layers of an insulating tape,
criss-cross over the cable end and carry back at least 4" onto cable outer finish. Add a containing
cover of two layers of vinyl electrical tape completely over the end seal.
2. Whenever possible, the factory applied lagging (protective cover) should be left in place.
Additional covering such as tarpaulin, plastic sheeting, etc., may be used if cable is to be stored for
long periods outdoors or in excessively dirty, dusty areas.
3. Store reels of cable on a firm surface, paved if possible, or on planking to prevent settling into
soft ground.
4. The storage areas should have good drainage.
5. Use fencing or other barriers to protect cables and reels against damage by vehicles or other
equipment moving about in the storage area.
Handling During Installation
1. Cold weather handling and pulling-in of cable can be more difficult, depending on the cable
construction and installation location. Cold-induced stiffness of cable must be considered along with
radius and number of bends in the proposed installation run.
In general most cables can be safely handled without damage if not subjected to temperature lower
than 10°F (-12°C)* in the 24 hour period proceeding pulling and bending. If it is anticipated that
store temperatures will be below this level during the 24-hour pre-pull period, arrangements should
be made to move the reel, avoiding impact, to a warmer area. If no indoor warming area is
available, a plastic sheeting-covered shelter may be constructed and heated. The reel should be
held in the warm storage area at a temperature of at least 60°F (16°C) for 24 hours to ensure total
warmup. Apply pulling eyes or grips while cable is in the warming area, prior to movement outdoors
or uncovering. If these instructions cannot be followed, please consult Kerite regarding the
particular situation and cable involved.
2. Always determine the safe maximum pulling tension of the cable and compare this to the tension
required for the particular run configuration being considered.
3. Always determine that ducts and conduits are clear of obstructions and properly sized. After
swabbing or brushing, a sizing mandrel should be pulled through to ensure the cables will fit without
jamming.
4. Attachment to the cable can be accomplished with any of the commercially available devices
(Kellems grips, Greenlee wire grip, etc.) or by field or factory-made pulling eyes. The choice may
depend on the tension requirements, especially when long runs or runs with several bends are to
be made. If the pull is through wet or damp locations, the cable ends must be positively sealed to
prevent moisture entry, and resealed after pulling.
5. Cable end seals may be disrupted during the pulling operations and therefore should be checked
and replaced if the cables are not going to be spliced or terminated right after pull-in. This is
especially important for underground runs where cable ends may be left in manholes which are
subject to flooding.
6. In the case of installing directly buried cables, a layer of approximately three inches of selected
backfill should be placed at the bottom of the open trench prior to installing cables. The cables
should be laid into the trench being careful not to twist or kink them. Care should be taken not to
abrade or impact the cable surface as it leaves the pay-off equipment and enters the trench. Overbending the cable to a point less than the recommended minimum bending radius should also be
avoided. Cables can become easily over-bend at guide points such as small sheaves or rollers
located on the cable laying equipment.
After laying the cables into the trench, they should be covered with a layer of selected backfill to a
level of approximately three to four inches above the cable surface(s). "Selected backfill" is defined
as either thermal sand or sand-clay-gravel mixture containing some small stones no greater in size
than one-quarter inch across at their largest dimension. The remainder of the open trench may then
be filled using ordinary backfill.
7. When installing cables in the earth using a cable plow, make sure the bottom of the plow blade
has a large enough bore and radius of curvature to easily accommodate the cable(s). During the
installation, the plow blade should never be raised suddenly nor the equipment operated in a
reverse direction (even for just a short distance). Either of these actions can severely damage the
cable.
KERITE TERMS AND CONDITIONS OF SALE
ORDER ACCEPTANCE - All orders are subject to credit approval, acceptance by Seller, and a
$500.00 minimum order quantity. Acceptance of any order is subject to availability of product and
the ability of Kerite to deliver.
VALIDITY - The prices shown are valid for a period of 30 days, unless otherwise specified.
METALS ADJUSTMENT - Copper (Comex, high grade, electrolytic cathode) Aluminum (New York
Merchant's 99.7%) and Lead (U.S. Primary Producers) will be adjusted to the market price on the
date of shipment per the American Metals Market and invoiced accordingly.
PAYMENT TERMS - Terms are 30 days net from date of invoice. A service charge of one and onehalf percent per month will be applied to all invoices not paid within the stated terms.
FREIGHT CHARGES - Freight charges have been computed using the total footage, cutting
length(s) indicated and standard equipment freight rates. Should final shipping instructions require a
change in the ship method, (i.e., flat bed, open top or exclusive use truck), or should buyer's
purchase order require a substantial change in the size/type/number of reels used, prices will be
adjusted accordingly.
REELS - Returnable reels, if used, are charged for extra. Full credit will be issued for reels returned
within 12 months, one-half credit for reels returned between 12 months and 18 months, and no
credit thereafter. Credit will be reduced for necessary repair costs. Reels must be returned prepaid
unless mutually agreed to in writing. For more detail, see Returnable Reel Procedure Attachment A.
RETURNS - No returns of products accepted unless previously authorized in writing.
QUANTITIES - Prices are based on quality brackets that apply to the respective items and
quantities requested. Orders or releases for quantities less than those shown will be subject to price
adjustment to the appropriate quantity bracket.
LENGTHS - Industry practice and the particular nature of wire and cable manufacture require that
manufacturing lengths be in excess of the exact lengths required for any given item. Tolerance of +/10% is required for each cutting length. Cables shipped will be within this tolerance and invoiced
accordingly. If a situation requires that there be no deviation in quantities other than the lengths
specified, Seller must be advised.
DELIVERY - Unless otherwise agreed in writing, shipment of material shall be made F.O.B.
Seymour, CT, or such other point as the Company may designate and shall constitute delivery to
the Purchaser. Title and all risk of loss or damage in transit shall pass to the Purchaser at that time.
Method and route of shipment will be at the discretion of the Company unless Purchaser shall
specify otherwise. Any additional expense incurred due to the method or route of shipment
specified by Purchaser shall be borne by Purchaser. Availability of raw materials, power, fuel,
manpower, and other conditions beyond the Company's control may alter the delivery time. The
delivery time indicated is not guaranteed and penalties for delays in delivery or for requests to
adjust metals to indicated shipping times will not be accepted.
CANCELLATION - Orders canceled may be subject to cancellation charges. Calculation of charges
will be dependent upon the degree of manufacturing completed.
TAXES - Federal, state or municipal excise and sales taxes levied upon the Seller or to be collected
by the Seller from the Purchaser in connection with the subject of this transaction will be added to
our invoice as net items where applicable.
WARRANTY - The Kerite Company
("Kerite") warrants solely to the Purchaser that any wire or cable of its own manufacture ("Product")
and supplied to the Purchaser will be free from defects in material and workmanship provided the
wire and cable are employed under conditions contemplated and covered by the design
specifications, and provided further that the wire and cable are installed, spliced, terminated,
maintained, and operated in accordance with Kerite's recommended standards and procedures. If a
Product fails electrically while in service, Purchaser shall notify Kerite within (5) days of the
discovery of such failure, and shall permit a representative of Kerite a reasonable opportunity to
inspect the Product. If it is mutually determined by Kerite and Purchaser that the failure is the result
of defective material or workmanship, Kerite's sole responsibility under this Warranty shall be to
repair or replace the defective Product, the choice of which will be Kerite's option. If Kerite chooses
to replace the defective Product, the new Product will be delivered free of charge to the delivery
point called for in the original order. Kerite will not be responsible for any damage or failure caused
by Purchaser or any third party, including without limitation, Acts of God. Kerite will not be
responsible for any defects or repairs to, or replacement of, adjacent or connected equipment to
which the Product may supply electrical power or from which it may take electrical power, or with
which it may, in any manner, be associated. Kerite will not be responsible for any incidental or
consequential damages whatsoever, either direct or indirect, resulting from a failure of the Product.
THE FOREGOING WARRANTY IS EXCLUSIVE AND IN LIEU OF ALL OTHER WARRANTIES
WHETHER WRITTEN, ORAL, EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
CABLE COLOR IDENTIFICATION - Colors being used for cable identification may not remain
stable during the entire life expectancy of a cable in underground installations, either directly buried
or in a duct, or in air exposed to direct sunlight. Soil conditions may vary and may change the
identification colors from varying shades to black over a period of time. Investigation conducted
indicates that to our knowledge there is no test that will predict the stability of colors in all types of
underground environments. The user is cautioned that this possibility of identification color change
does exist and the user assumes full responsibility for cable identification and associated safety
practices and procedures prior to performing any work on the cable.
CORRECTIONS - All stenographic and clerical errors are subject to correction.
GENERAL - Placement of an order by Purchaser or acceptance of any shipment of goods listed in
a Kerite current price list constitutes agreement by Purchaser to these Terms and Conditions of
Sales as the only terms and conditions applying to the purchase and sale of the identified goods.
No addition to, deletion from, or modification of any of these provisions shall be binding upon Kerite
unless made in writing and signed by a duly authorized Kerite representative or in accordance with
a published Kerite policy applicable to such order and in effect at the time Kerite accepts such
order. KERITE HEREBY OBJECTS TO ANY BUYER TERMS AND CONDITIONS CONTAINED IN
ANY PURCHASE ORDER OR OTHER DOCUMENT SUBMITTED BY BUYER.
This contract shall be construed under and governed by the Laws of the State of Connecticut as if
entered into and fully performed therein.
Form 012296-16

Kerite Catalog Introduction - Kriz

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