Polymer Insulators for 46kV to 765kV Applications IEC Standard

Polymer Insulators for 46kV to 765kV Applications IEC Standard

CATALO G
014
Polymer Insulators for
46kV to 765kV Applications
IEC Standard
NGK-Locke Polymer Insulators, Inc.
Virginia Beach, Virginia, U.S.A.
NGK-Locke Polymer Insulators, Inc.
Line Post Insulators
TABLE of CONTENTS
NGK-Locke Polymer Insulator Design ..............................................................................2
Research and Development ............................................................................................3
Suspension Insulator Design and Technical Information ................................................4-5
• IEC 70kN - 120kN Class / SC Sheds Series ................................................................6
• IEC 210kN Class / SC Sheds Series ............................................................................7
• IEC 70kN - 120kN Class / SS, SL, and SE Sheds Series ..........................................8-9
• IEC 210kN Class / SS, SL, and SE Sheds Series ..................................................10-11
• IEC 160kN Class / SC, SS, and SL Sheds Series ..................................................12-13
• IEC 300kN Class / SS, SL, and SE Sheds Series........................................................14
• Standard Insulation Level ............................................................................................15
Line Post Insulator Design and Technical Information ................................................16-17
• 44mm Core Series ................................................................................................18-19
• 63mm Core Series ................................................................................................20-23
• 76mm Core Series ................................................................................................24-25
• 88mm Core Series ................................................................................................26-27
Packaging ......................................................................................................................28
NGK-Locke Polymer Insulators, Inc. is ISO 9001 and ISO 14001 certified by the British Standards Institutes, BSI. BSI
is accredited by NACCA, RAB, and RvC.
1
NGK-LOCKE Polymer Insulators
NGK-Locke Polymer Insulators, Inc.
NGK’s polymer insulators are the result of more than 40 years of research and development. Our ISO 9001 certification
has been achieved due to our vast engineering expertise, stringent quality control processes, advanced manufacturing
capabilities, and our selection of the best materials and optimum designs. All of these are essential in order to meet NGK’s
traditional policy of commitment to producing insulators of the highest quality.
DESIGN
•
Materials
End-fittings
•
Forged steel or ductile cast iron (hot dip galvanized).
Housing
•
Silicone rubber with excellent hydrophobicity and
anti-tracking performance. The material passes not only
IEC/ANSI tracking erosion test but also other standard
aging tests such as CSA / tracking wheel test.
•
•
Core
•
High quality pultruded epoxy
FRP (Fiberglass Reinforced Plastics) rod.
Interfaces
Housing to Core
Excellent chemical bonding stronger than rubber’s inherent
strength. No sheath-to-shed interface and no joint in
housing up to 800 kV class application because of direct
one-piece molding.
•
Housing to End-Fitting
Water-tight sealing ensured by double O-rings built into
housing structure and silicone sealant with positive contact
by crimping the end-fitting.
•
•
••
•
End fitting to Core
•
Superior gripping of core due to pressure controlled
multiple step circumferential compression which enables
excellent mechanical performance because of less stress
concentration.
End Fitting
Dies
•
•
FRP
Crimping Method
(NGK Pat. No. 4654478 (U.S.))
2
Crimping Machine
Molding
NGK-Locke Polymer Insulators, Inc.
Research and Development
High performance and quality of our polymer insulators have been proven by extensive research. At both NGK’s High Voltage
Laboratory and our other testing facilities, we have conducted the standard tests specified in international standards, such as
IEC. Various tests, from chemical analysis of the materials to full-scale electrical and mechanical tests on polymer insulators, also
have been performed. These results indicate the continuous improvement of our polymer insulator technology.
Combined aging test as per IEC Pub. 61109 Annex C
Dynamic mechanical load testing on line post insulator
Partial discharge during tracking wheel test
Contamination test on polymer suspension insulator
Tracking and erosion test as per CSA-C411.4 (tracking wheel test: method 2)
3
Suspension Insulators
NGK-Locke Polymer Insulators, Inc.
Suspension Insulator
Catalog Number System
Shed
Type of
grading ring
(Top/Bottom)
Design
E 12 1 - S L 50 0 - SB - 41
Core
size
Number
of sheds
Type of
(Side View)
(Top View)
Grading Ring
General Recommendation on Grading Rings*
Typical Highest Voltage
145 kV and below
Top (Tower side)
None
Grading Ring
Application
Bottom (Line side)
None
345 kV
550 kV
None
100 mmø
200 mmø
200 mmø
280 mmø
380 mmø
08 for 200 mmø
at bottom
41 for 100ø mm at top and
280 mmø at bottom
85 for 200 mmø at top and
380 mmø at bottom
None**
Catalog # Suffix (Examples)
245 kV
*For more detailed information, contact NGK.
**Corona Ring may be required under specific condition.
Ring Size Suffix
Ring size
Catalog # Suffix
Ring size
Catalog # Suffix
None
0
240 mm (9.5”) ø
9
100 mm (4”) ø
4
280 mm (11”) ø
1
200 mm (8”) ø
8
380 mm (15”) ø
5
Other size of ring is also available.
End Fitting Design (IEC Type Coupling Dimensions)
SML,
kN
Catalog #
Suffix
70/80
E071/E081
120
E121
160
E162
210
E212
300
E302
Oval-eye
Clevis
Tongue
Ball-socket
A
B
C
D
F (min)
B
A
B (min)
C
A
B
C
26
51
16
16
39
19
20
46
19
13.5
13.3
17.5
IEC 16
26
51
22
22
40
22
20
53
22
22.8
14.9
24
IEC 20
_
_
_
_
_
_
26
57.5
25
_
_
_
IEC 24
For more detailed information, contact NGK.
4
Y-clevis
Suspension Insulators
NGK-Locke Polymer Insulators, Inc.
Design Variety of Weather Sheds (Examples)
Our shed profile variation can cover wide insulator design application from clean to harsh environments. Other shed
designs are also available to match various customer requirements. All NGK shed designs comply with IEC pub. 60815
Catalog # Suffix of Shed Type (for silicone)
Applicable area (Pollution level)
Max. line
voltage
BIL, kV
SML and
coupling
Specific creepage distance, mm/kVH
(Required creepage distance, mm)
120 kN
145 kV
≥550
Clean
SML, IEC
Section length of insulator unit,mm
16 (2320)
1260 [33]
20 (2900)
1500 [41]
25 (3625)
16 Ball &
Heavy pollution
1290 [34]
1560 [43]
31 (4495)
Socket
1260 [33]
1500 [41]
40 (5800)
120 kN
245 kV
≥850
SML, IEC
1620 [45]
16 (3920)
1950 [56]
20 (4900)
2370 [70]
25 (6125)
16 Ball &
1980 [57]
2430 [72]
31 (7595)
Socket *
1920 [55]
2340 [69]
40 (9800)
210 kN
362 kV
≥1050
(S.I. :850
withstand)
SML, IEC
16 (5792)
2850 [82]
20 (7240)
3450 [102]
2940 [85]
3570 [106]
31 (11222)
Socket**
2850 [82]
3420 [101]
40 (14480)
210 kN
525 kV
≥1425
(S.I. :1175
withstand)
SML, IEC
3960 [119]
20 (10500)
4830 [148]
4080 [123]
5010 [154]
31 (16275)
Socket***
3000 [87]
3750 [112]
16 (8400)
25 (13125)
20 Ball &
2040 [59]
2555 [76]
25 (9050)
20 Ball &
1320 [35]
40 (21000)
3930 [118]
4770 [146]
4140 [125]
5250 [162]
* : 200 mm ring equipped at bottom end ** : 100 mm and 280 mm rings equipped at top and bottom ends, respectively.
*** : 200 mm and 380 mm rings equipped at top and bottom ends, respectively.
(Reference)
IEC Definition of Pollution Level (IEC Pub. 60815)
Min. nominal specific creepage
distance, mm/kVH
Pollution Level
16
Light
20
Medium
25
Heavy
31
Very Heavy
40
—
kVH : Max. phase-to-phase voltage in kV
For more detailed information, contact NGK.
5
Suspension Insulators
NGK-Locke Polymer Insulators, Inc.
IEC 70 kN – 120 kN Class / SC Sheds Series
Applied Standard: IEC Pub. 61109 latest issue
345 kV
400 kV
220 - 230 kV
100 - 138 kV
66 -69 kV
Typical
System
Voltage
Catalog No.
Section length, mm
Approximate
Nominal creepage Dry arc
E__-SC210-SB
900
1490
675
240
400
2.8
E__-SC250-SB
1020
1775
790
275
465
3.1
E__-SC280-SB
1110
1985
880
300
510
3.3
E__-SS310-SB
1200
2200
970
325
560
3.5
E__-SC340-SB
1290
2415
1060
350
610
3.6
E__-SC350-SB
1320
2485
1090
360
625
3.7
E__-SC390-SB
1440
2770
1210
390
690
4.0
E__-SC410-SB
1500
2910
1270
405
720
4.1
E__-SC450-SB
1620
3195
1390
435
785
4.4
E__-SC500-SB
1770
3550
1540
475
870
4.7
E__-SC550-SB
1920
3905
1690
510
950
5.0
E__-SC590-SB
2040
4190
1815
535
1015
5.3
E__-SC640-SB
2190
4545
1965
565
1095
5.6
E__-SC690-SB
2340
4900
2115
600
1175
6.0
E__-SC740-SB
2490
5255
2265
630
1260
6.3
E__-SC780-SB
2615
5535
2385
655
1325
6.5
E__-SC810-SB
2705
5750
2475
670
1370
6.7
E__-SC860-SB
2855
6105
2625
700
1450
7.1
E__-SC880-SB
2915
6245
2685
710
1485
7.2
E__-SC910-SB
3005
6460
2775
725
1535
7.4
E__-SC930-SB
3065
6600
2835
735
1565
7.5
E__-SC1000-SB
SML Rating
Cat.# suffix (E__-)
70 kN
E071-
80 kN
E081-
8.0
Adjustment for different types of end-fitting couplings
Ball & Socket Coupling
IEC 16
Fitting type
Y-clevis & Ball
Oval eye & Ball
Clevis & Clevis
Adjustment
+15 mm / +0.4 kg
+26 mm / -0.2 kg
+48 mm / +0.6 kg (IEC 19L)
Cat. # suffix
YB
EB
CC
Adjustment for electrical values when equipping grading rings
Applicable Drv Arc Distance (DAD)
Adjustment of
Tabular values
with no grading
rings
Dry arc distance, mm
AC wet withstand voltage, kV
Lightning impulse withstand voltage, kV
Net weight, kg (Approx.)
Applicable standard Catalog # suffix of grading rings
- 40
-10*
- 20
08
NOTES:
–The above adjustments electrical values are just for guided ones because of non-linearity of electrical characteristics.
–For more detailed values and end-fitting availability, contact NGK.
6
- 60
-15**
-30
+2.5 kg
41
-130
- 25***
- 65
+6.5 kg
85
*:
** :
*** :
DAD > approx. 1.5 m
DAD > approx. 2 m
DAD > approx. 2.5 m
(Example of Cat. #)
For 120 kN SML, Ball & Socket,
55 sheds, 230 kV application:
E121-SC550-SB-08
Suspension Insulators
NGK-Locke Polymer Insulators, Inc.
IEC 210 kN Class / SC Sheds Series
Applied Standard: IEC Pub. 61109 latest issue
Typical
System
Voltage
500 kV
400 kV
345 kV
220 - 230 kV
100 - 138 kV
Catalog No.
Section length, mm
Approximate
Nominal creepage Dry arc
E212-SC310-SB
1315
2200
970
325
560
6.2
E212-SC350-SB
1435
2485
1090
360
625
6.5
E212-SC390-SB
1555
2770
1210
390
690
6.9
E212-SC410-SB
1615
2910
1270
405
720
7.1
E212-SC450-SB
1735
3195
1390
435
785
7.4
E212-SC500-SB
1885
3550
1540
475
870
7.9
E212-SC550-SB
2035
3950
1690
510
950
8.3
E212-SC590-SB
2155
4190
1815
535
1015
8.7
E212-SC640-SB
2305
4545
1965
565
1095
9.2
E212-SC690-SB
2455
4900
2115
600
1175
9.6
E212-SC740-SB
2610
5255
2265
630
1260
10.1
E212-SC780-SB
2730
5535
2385
655
1325
10.4
E212-SC810-SB
2820
5750
2475
670
1370
10.7
E212-SC860-SB
2970
6105
2625
700
1450
11.2
E212-SC880-SB
3030
6245
2685
710
1485
11.3
E212-SC910-SB
3120
6460
2775
725
1535
11.6
E212-SC930-SB
3180
6600
2835
735
1565
11.8
E212-SC1000-SB
3390
7100
3045
770
1680
12.4
E212-SC1090-SB
3660
7740
3315
815
1825
13.2
E212-SC1170-SB
3900
8305
3555
855
1955
14.0
E212-SC1310-SB
4320
9300
3975
915
2180
15.2
E212-SC1410-SB
4620
10010
4275
960
2345
16.1
E212-SC1530-SB
4980
10860
4635
1005
2540
17.2
Adjustment for different types of end-fitting couplings
SML Rating
Cat.# suffix (E__-)
Ball & Socket Coupling
210 kN
E212-
IEC 20
Adjustment for electrical values when equipping grading rings
Fitting type
Y-clevis & Ball
Oval eye & Ball
Clevis & Clevis
Adjustment
+4 mm / +0.4 kg
+14 mm / -0.4 kg
+51 mm / +1.6 kg (IEC 22L)
Cat. # suffix
YB
EB
CC
Applicable Drv Arc Distance (DAD)
Adjustment of
Tabular values
with no grading
rings
Dry arc distance, mm
AC wet withstand voltage, kV
Lightning impulse withstand voltage, kV
Net weight, kg (Approx.)
Applicable standard Catalog # suffix of grading rings
-40
-10*
-20
08
NOTES:
–The above adjustments electrical values are just for guided ones because of non-linearity of electrical characteristics.
–For more detailed values and end-fitting availability, contact NGK.
-60
-15**
-30
+2.5 kg
41
-130
-25***
-65
+6.5 kg
85
*:
** :
*** :
DAD > approx. 1.5 m
DAD > approx. 2 m
DAD > approx. 2.5 m
(Example of Cat. #)
For 210 kN SML, Ball & Socket,
81 sheds, 345 kV application:
E212-SC810-SB-41
7
Suspension Insulators
NGK-Locke Polymer Insulators, Inc.
IEC 70 kN – 120 kN Class / SS, SL, and SE Sheds Series
Shed Suffix #
Maximum nominal
shed diameter D,mm
SS
SL
SE
106
132
Applied Standard: IEC pub. 61109 latest issue
Typical
System
Voltage
Catalog No.
Section length, mm
E__-SS210-SB
66 - 69kV
E__-SL210-SB
1815
900
3.3
685
240
405
4.2
5.0
E__-SS250-SB
2160
3.7
1020
2800
805
280
470
4.8
E__-SE250-SB
3270
5.7
E__-SS280-SB
2400
3.9
1110
E__-SE280-SB
E__-SL310-SB
3120
890
305
515
3645
E__-SS310-SB
6.2
2675
1200
3470
5.1
4.2
985
330
570
5.5
E__-SE310-SB
4055
6.7
E__-SS340-SB
2915
4.4
E__-SL340-SB
1290
E__-SE340-SB
E__-SL350-SB
3790
1070
355
615
4430
E__-SS350-SB
7.2
3015
1320
3915
5.9
4.5
1105
365
635
6.1
E__-SE350-SB
4575
7.4
E__-SS390-SB
3360
4.9
E__-SL390-SB
1440
E__-SE390-SB
E__-SL410-SB
4365
1225
395
700
5095
E__-SS410-SB
8.1
3530
1500
4585
6.6
5.1
1285
410
730
6.8
E__-SE410-SB
5355
8.4
E__-SS450-SB
3875
5.4
E__-SL450-SB
1620
E__-SE450-SB
E__-SL500-SB
5030
1405
440
795
5875
E__-SS500-SB
220-230 kV
2355
2750
E__-SL250-SB
100 - 138 kV
Approximate
Dry arc
E__-SE210-SB
E__-SL280-SB
9.1
4290
1770
5575
7.4
5.8
1550
475
875
8.0
E__-SE500-SB
6515
9.9
E__-SS550-SB
4730
6.3
E__-SL550-SB
1920
6145
1705
510
960
8.7
E__-SE550-SB
7180
10.8
E__-SS590-SB
5075
6.6
E__-SL590-SB
E__-SE590-SB
8
Nominal creepage
2040
6590
7700
1825
540
1020
9.2
11.4
Suspension Insulators
NGK-Locke Polymer Insulators, Inc.
Typical
System
Voltage
Catalog No.
Section length, mm
Nominal creepage
E__-SS640-SB
E__-SL640-SB
5490
2190
1100
9.8
12.2
5930
2340
7.5
2125
7710
600
1185
10.5
9000
13.1
E__-SS740-SB
6345
7.9
2490
630
1260
11.1
9640
E__-SS780-SB
E__-SL780-SB
2270
8250
E__-SE740-SB
13.9
6690
2615
8.2
2390
8695
655
1325
11.6
E__-SE780-SB
10160
14.6
E__-SS810-SB
6960
8.5
E__-SL810-SB
2705
675
1380
12.0
10565
E__-SS860-SB
E__-SL860-SB
2485
9045
E__-SE810-SB
15.1
7375
2855
8.9
2630
9590
700
1455
12.7
E__-SE860-SB
11200
15.9
E__-SS880-SB
7545
9.1
E__-SL880-SB
2915
2690
9810
710
1490
12.9
E__-SE880-SB
11460
16.3
E__-SS910-SB
7820
9.4
E__-SL910-SB
400 kV
570
E__-SE690-SB
E__-SL740-SB
230 kV
1970
8335
E__-SS690-SB
345 kV
7.0
7135
E__-SE640-SB
E__-SL690-SB
Approximate
Dry arc
3005
10160
2785
730
1540
13.3
E__-SE910-SB
11870
16.8
E__-SS930-SB
7990
9.6
E__-SL930-SB
3065
10385
2845
740
1575
13.6
E__-SE930-SB
12125
17.2
E__-SS1000-SB
8575
10.1
E__-SL1000-SB
3275
11150
E__-SE1000-SB
SML Rating
Cat.# suffix (E__-)
70 kN
E071-
80 kN
E081-
3050
775
1685
14.5
13025
Adjustment for different types of end-fitting couplings
Ball & Socket Coupling
IEC 16
Adjustment for electrical values when equipping grading rings
Fitting type
Y-clevis & Ball
Oval eye & Ball
Clevis & Clevis
Adjustment
+15 mm / +0.4 kg
+26 mm / -0.2 kg
+48 mm / +0.6 kg (IEC 19L)
Cat. # suffix
YB
EB
CC
Applicable Drv Arc Distance (DAD)
Adjustment of
Tabular values
with no grading
rings
Dry arc distance, mm
AC wet withstand voltage, kV
Lightning impulse withstand voltage, kV
Net weight, kg (Approx.)
Applicable standard Catalog # suffix of
grading rings
Shed
Type
-45
-10*
-25
SS
08
SL
SE
09
01
-65
-15**
-35
+2.5 kg
-140
-25***
-75
+7 kg
85
41
95
15
*:
** :
*** :
DAD > approx. 1.5 m
DAD > approx. 2 m
DAD > approx. 2.5 m
(Example of Cat. #)
For 120 kN SML, Ball & Socket,
55 SS sheds, 230 kV application:
E121-SS550-SB-08
NOTES:
–The above adjustments electrical values are just for guided ones because of non-linearity of
electrical characteristics.
–For more detailed values and end-fitting availability, contact NGK.
9
Suspension Insulators
NGK-Locke Polymer Insulators, Inc.
IEC 210 kN Class / SS, SL and SE Sheds Series
Shed Suffix #
Maximum nominal
shed diameter D,mm
SS
SL
SE
114
140
Applied Standard: IEC Pub. 61109 latest issue
Typical
System
Voltage
Catalog No.
Section length, mm
E212-SS310-SB
E212-SL310-SB
100 - 138 kV
2675
1315
3470
6.9
985
330
570
8.5
4055
9.8
E212-SS350-SB
3015
7.4
1435
3915
1105
365
635
9.1
E212-SE350-SB
4575
10.6
E212-SS390-SB
3360
7.9
E212-SL390-SB
1555
1225
395
700
1615
4585
9.8
11.4
3530
E212-SS410-SB
E212-SL410-SB
4365
5095
E212-SE390-SB
8.1
1285
410
730
10.1
E212-SE410-SB
5355
11.8
E212-SS450-SB
3875
8.6
E212-SL450-SB
1735
1405
440
795
1885
5575
10.8
12.6
4290
E212-SS500-SB
E212-SL500-SB
5030
5875
E212-SE450-SB
9.1
1550
475
875
11.5
E212-SE500-SB
6515
13.6
E212-SS550-SB
4730
9.7
E212-SL550-SB
2035
1705
510
960
2125
6590
12.4
14.7
5075
E212-SS590-SB
E212-SL590-SB
6145
7180
E212-SE550-SB
220 - 230 kV
Approximate
Dry arc
E212-SE310-SB
E212-SL350-SB
10.2
1825
540
1020
13.0
E212-SE590-SB
7700
15.5
E212-SS640-SB
5490
10.7
E212-SL640-SB
2305
1970
570
1100
2455
7710
13.8
16.5
5930
E212-SS690-SB
E212-SL690-SB
7135
8335
E212-SE640-SB
11.3
2125
600
1185
14.7
E212-SE690-SB
9000
17.6
E212-SS740-SB
6345
11.9
E212-SL740-SB
2610
8250
2270
630
1260
15.5
E212-SE740-SB
9640
18.6
E212-SS780-SB
6690
12.3
E212-SL780-SB
E212-SE780-SB
10
Nominal creepage
2730
8695
10160
2390
655
1325
16.1
19.4
Suspension Insulators
NGK-Locke Polymer Insulators, Inc.
Typical
System
Voltage
Catalog No.
Nominal creepage
Section length, mm
E212-SS810-SB
E212-SL810-SB
9045
16.6
1380
10565
20.1
7375
13.2
2970
700
2630
9590
1455
17.4
E212-SE860-SB
11200
21.1
E212-SS880-SB
7545
13.5
3030
710
2690
9810
1490
17.8
E212-SE880-SB
11460
21.5
E212-SS910-SB
7820
13.8
E212-SL910-SB
3120
18.6
22.5
14.9
11150
775
3050
1685
19.7
23.9
13025
15.9
9360
3660
12170
E212-SE1090-SB
820
3330
1835
21.2
25.8
14210
E212-SS1170-SB
16.8
10050
13060
3900
E212-SE1170-SB
855
3570
22.5
1960
27.5
15255
E212-SS1310-SB
18.4
11250
14620
4320
E212-SE1310-SB
3990
24.8
2190
920
30.3
17080
E212-SS1410-SB
E212-SL1410-SB
2845
1575
8575
3390
E212-SS1090-SB
E212-SL1310-SB
14.1
740
12125
E212-SE1000-SB
E212-SL1170-SB
18.3
22.1
10385
E212-SS1000-SB
E212-SL1090-SB
1540
7990
3180
E212-SE930-SB
E212-SL1000-SB
730
11870
E212-SS930-SB
E212-SL930-SB
2785
10160
E212-SE910-SB
500 kV
675
2485
E212-SE810-SB
E212-SL880-SB
345 kV
12.7
6960
2820
E212-SS860-SB
E212-SL860-SB
400 kV
Approximate
Dry arc
19.6
12105
15735
4620
4290
26.5
2350
960
E212-SE1410-SB
18380
32.4
E212-SS1530-SB
13135
21.0
E212-SL1530-SB
4980
17075
2545
1010
4650
28.4
19945
E212-SE1530-SB
SML Rating
Cat.# suffix (E__-)
Ball & Socket Coupling
210 kN
E212-
IEC 20
Adjustment for different types of end-fitting couplings
Adjustment for electrical values when equipping grading rings
Fitting type
Y-clevis & Ball
Oval eye & Ball
Clevis & Clevis
Adjustment
+4 mm / +0.4 kg
+14 mm / -0.4 kg
+51 mm / +1.6 kg (IEC 22L)
Cat. # suffix
YB
EB
CC
Applicable Drv Arc Distance (DAD)
Adjustment of
Tabular values
with no grading
rings
Dry arc distance, mm
AC wet withstand voltage, kV
Lightning impulse withstand voltage, kV
Net weight, kg (Approx.)
Applicable standard Catalog # suffix of
grading rings
Shed
Type
-50
-10*
-25
SS
08
SL
SE
09
01
NOTES:
–The above adjustments electrical values are just for guided ones because of non-linearity of
electrical characteristics.
–For more detailed values and end-fitting availability, contact NGK.
-70
-15**
-35
+2.5 kg
-140
-25***
-75
+7 kg
85
41
95
15
*:
** :
*** :
DAD > approx. 1.5 m
DAD > approx. 2 m
DAD > approx. 2.5 m
(Example of Cat. #)
For 210 kN SML, Ball & Socket,
86 SS sheds, 345 kV application:
E212-SS860-SB-41
11
Suspension Insulators
NGK-Locke Polymer Insulators, Inc.
IEC 160 kN Class / SC, SS and SL Sheds Series
Shed Suffix #
Maximum nominal
shed diameter D,mm
SC
SL
SE
76
140
Applied Standard: IEC Pub. 61109 latest issue
Typical
System
Voltage
Catalog No.
Section length, mm
E168-SC310-EB
E168-SS310-EB
100 - 138 kV
E168-SC410-EB
360
625
3359
3531
4.9
1214
390
690
5
1274
405
725
E168-SL450-EB
5.3
1394
435
790
5.6
3550
1912
4288
6.3
8.3
5032
E168-SC500-EB
6
7.8
3195
3874
5.8
7.5
4586
1762
5.4
7
2911
1642
E168-SC450-EB
1544
475
870
6.7
E168-SL500-EB
5575
8.9
E168-SC550-EB
3905
6
E168-SS550-EB
2062
E168-SL550-EB
E168-SS590-EB
4731
1695
510
950
6.2
4189
2182
5074
7.2
9.6
6147
E168-SC590-EB
220 - 230 kV
4.6
1094
4363
E168-SL410-EB
1815
535
1015
7.5
E168-SL590-EB
6593
10.1
E168-SC640-EB
4544
6.6
E168-SS640-EB
2332
5488
1965
570
1150
8
E168-SL640-EB
7136
10.8
E168-SC690-EB
4899
6.9
E168-SS690-EB
2483
5932
2115
600
1175
8.4
E168-SL690-EB
7708
11.5
E168-SC740-EB
5254
7.2
E168-SS740-EB
2633
6346
2265
630
1260
8.8
E168-SL740-EB
8251
12.1
E168-SC780-EB
5538
7.5
E168-SS780-EB
E168-SL780-EB
12
3016
5.1
6.4
2769
1582
E168-SL390-EB
E168-SS500-EB
560
3917
E168-SC390-EB
E168-SS450-EB
2673
325
2485
1462
E168-SL350-EB
E168-SS410-EB
4.4
974
3471
E168-SC350-EB
E168-SS390-EB
Approximate
Dry arc
2201
1341
E168-SL310-EB
E168-SS350-EB
Nominal creepage
2753
6689
8697
2385
655
1325
9.2
12.6
Suspension Insulators
NGK-Locke Polymer Insulators, Inc.
Typical
System
Voltage
Catalog No.
Section length, mm
Nominal creepage
E168-SC810-EB
E168-SS810-EB
2843
6961
2475
670
1370
9.5
9046
13.1
E168-SC850-EB
6035
7.9
2963
7304
E168-SL850-EB
E168-SC890-EB
E168-SS890-EB
3083
2596
695
1435
9.8
9492
13.6
6319
8.2
7647
2716
715
1500
10.2
E168-SL890-EB
9938
14.1
E168-SC910-EB
6461
8.3
E168-SS910-EB
3143
7818
E168-SL910-EB
E168-SS950-EB
725
1535
8161
10.3
14.4
8.6
6745
3263
E168-SL950-EB
2896
745
1600
10.7
10607
14.9
7029
8.9
E168-SC990-EB
E168-SS990-EB
2776
10161
E168-SC950-EB
3384
8504
3016
765
1665
11
E168-SL990-EB
11053
15.4
E168-SC1010-EB
7171
9
E168-SS1010-EB
400 - 500 kV
7.7
5751
E168-SL810-EB
E168-SS850-EB
345 kV
Approximate
Dry arc
3444
8676
E168-SL1010-EB
1695
9019
9.3
3196
795
1760
16.2
7810
9.6
3714
9433
3346
820
1840
Cat.# suffix (E__-)
Ball Coupling
160 kN
E168-
IEC 20
12
16.9
12265
SML Rating
11.6
11722
E168-SC1100-EB
E168-SL1100-EB
11.2
15.7
7455
3564
E168-SL1050-EB
E168-SS1100-EB
775
11276
E168-SC1050-EB
E168-SS1050-EB
3076
Adjustment for electrical values when equipping grading rings
Applicable Drv Arc Distance (DAD)
Adjustment of
Tabular values
with no grading
rings
Dry arc distance, mm
AC wet withstand voltage, kV
Lightning impulse withstand voltage, kV
Net weight, kg (Approx.)
Applicable standard Catalog # suffix of
grading rings
Shed
Type
SC
SS
SL
-50
-10*
-25
08
09
-70
-15**
-35
+2.5 kg
41
-140
-25***
-75
+7 kg
*:
** :
*** :
DAD > approx. 1.5 m
DAD > approx. 2 m
DAD > approx. 2.5 m
85
(Example of Cat. #)
For 160kN SML, Ball & Eye, 85SS
sheds, 345kV application
95
E168-SS850-EB-41
NOTES:
–The above adjustments electrical values are just for guided ones because of
non-linearity of electrical characteristics.
–For more detailed values and end-fitting availability, contact NGK.
13
Suspension Insulators
NGK-Locke Polymer Insulators, Inc.
IEC 300 kN Class / SS, SL and SE Sheds Series
Shed Suffix #
Maximum nominal
shed diameter D,mm
SS
SL
SE
114
140
Applied Standard: IEC Pub. 61109 latest issue
Typical
System
Voltage
Catalog No.
Section length, mm
5932
E302-SS690-CC
230 kV
E302-SL690-CC
2610
7708
2970
9046
345 kV
3271
10161
3541
11150
E302-SS1090-CC
22.8
16.6
2790
1540
730
21.0
24.9
17.6
3054
1685
775
22.5
26.7
18.7
9362
3811
12168
3330
1835
820
24.0
28.6
14212
E302-SE1090-CC
19.6
10048
E302-SS1170-CC
4052
13060
3570
1960
855
25.3
30.3
15254
E302-SE1170-CC
500 kV
19.4
13025
E302-SE1000-CC
400 kV
1380
675
8575
E302-SS1000-CC
21.2
11248
E302-SS1310-CC
E302-SL1310-CC
15.4
2489
11868
E302-SE910-CC
E302-SL1170-CC
20.4
7818
E302-SS910-CC
E302-SL1090-CC
17.4
10565
E302-SE810-CC
E302-SL1000-CC
1185
600
6961
E302-SS810-CC
E302-SL910-CC
14.0
2129
9002
E302-SE690-CC
E302-SL810-CC
Approximate
Nominal creepage Dry arc
4472
14621
3991
27.6
2190
920
E302-SE1310-CC
17078
33.1
E302-SS1410-CC
12106
22.3
E302-SL1410-CC
15736
4772
4291
29.2
2350
960
E302-SE1410-CC
18380
35.2
E302-SS1530-CC
13135
23.7
E302-SL1530-CC
17074
5133
4652
31.2
2545
1010
37.7
19943
E302-SE1530-CC
SML Rating
Cat.# suffix (E__-)
Clevis Coupling
300 kN
E302-
IEC 60471 25L
Adjustment for electrical values when equipping grading rings
Applicable Drv Arc Distance (DAD)
Adjustment of
Tabular values
with no grading
rings
Dry arc distance, mm
AC wet withstand voltage, kV
Lightning impulse withstand voltage, kV
Net weight, kg (Approx.)
Applicable standard Catalog # suffix of
grading rings
14
Shed
Type
NOTES:
–The above adjustments electrical values are just for guided ones because of
non-linearity of electrical characteristics.
–For more detailed values and end-fitting availability, contact NGK.
SS
SL
SE
-50
-10*
-25
09
01
-70
-15**
-35
+2.5 kg
41
-140
-25***
-75
+7 kg
95
15
*:
** :
*** :
DAD > approx. 1.5 m
DAD > approx. 2 m
DAD > approx. 2.5 m
(Example of Cat. #)
For 300 kN SML, Clevis & Clevis,
153 SL sheds, 500 kV application:
E302-SL1530-CC-95
Suspension Insulators
NGK-Locke Polymer Insulators, Inc.
Standard Insulation Level (Reference)
(52 kV ≤ Um<300 kV : IEC Pub. 60071)
1
2
3
4
Base for p.u. values
2
U √
m√ 3
(peak)
Rated lightning
impulse withstand
voltage (peak)
Rated power frequency
short duration withstand
voltage
kV
kV
kV
kV
52
42.5
250
95
72.5
59
325
140
123
100
450
185
145
118
550
230
170
139
650
275
245
200
750
325
850
360
950
395
1050
460
Highest voltage
for equipment,
U (r.m.s.)
m
(Um ≥ 300 kV : IEC Pub. 60071)
1
2
3
4
Highest voltage
for equipment,
U (r.m.s.)
m
Base for p.u. values
2
U √
m√ 3
(peak)
Rated switching
impulse withstand
voltage (peak)
Rated lightning
impulse withstand
(peak)
kV
kV
kV
kV
850
300
245
750
362
296
850
1050
420
343
950
1175
525
429
1050
1300
1175
1425
1300
1550
1425
1800
1550
1950
765
625
950
2100
2400
15
Line Post Insulators
NGK-Locke Polymer Insulators, Inc.
Line Post Insulator Catalog Number System
L2-SN471-13-W
Number
of Sheds
Type of
Insulator
Grading Ring Application
None : 161kV & Below
W
: 230 kV
X
: 345 kV
L : Line Post
Shed Shape
SN : Standard Leakage
SL : High Leakage
Core Dia.
1 : ø44mm
2 : ø63mm
3 : ø76mm
4 : ø88mm
Mounting Base
Design Variation
Line End-Fitting
1 : Drop Tongue
2 : Clamp Top, Horizontal
4 : Clamp Top, Vertical
5 : 127mm Bolt Circle (Short)
6 : 127mm Bolt Circle (Long)
R : Clevis
1 : Rigid Curved Base
2 : Rigid Flat Base
3 : Bendable Curved Base
5 : 127mm Bolt Circle (Long)
6 : 3/4”-10 UFS Stud Base
7 : 7/8”-9 UFS Stud Base
8 : Bendable Flat Base
R : Clevis
Suffix code for end fitting is also
noted in end fitting details section.
Corona Ring Recommendation
Unit: mm
Catalog #
Line Side
Tower Side
Line Side
Tower Side
Line Side
Tower Side
230 kV
LC211
None
LC311
None
None
None
-W
345 kV
LC215
None
LC315
None
LC415
None
-X
For more detailed information, contact NGK.
Cap Screw
1/2” - 13 UNC
Mounting Arm
Energized
End Fitting
Stop Ring
Clamp
Spring Washer
Side View
Corona Ring
Front View
Corona Ring for 230 kV
Part # : LC211 / LC311
Nut
This spherical surface
must face the rubber
weathershed.
Bottom View
Corona Ring for 345 kV
Part # : LC215/LC315/LC415
16
Line Post Insulators
NGK-Locke Polymer Insulators, Inc.
Maximum Design Cantilever Load (MDCL)
The strength rating of line post insulators is usually designated as cantilever strength because of the structural application in
transmission lines. And since the cantilever strength is decided by the bending movement applied to the insulator, the rating
varies as the length of insulator changes in the same core size. MDCL is the mechanical rating of the line post insulators.
The general relation of MDCL, insulator length, and typical system voltage is shown below.
General Application of Line Post Insulators
Typical
System Voltage
161 kV
115 kV
138 kV
69 kV
10
230 kV
ø 76mm Polymer LP
345 kV
ø 88mm Polymer LP
ø 63mm Polymer LP
MDLC, kN
ø 44m Polymer LP
5
ø 44
ø 63
ø 76
Typical Polymer
Line Post Applications
0
0.5
1
1.5
ø 88
Braced LP / Horizontal Vee
2
2.5
3
Dry Arching Distance, m
17
Line Post Insulators
NGK-Locke Polymer Insulators, Inc.
ø44mm LINE POST CATALOG NUMBER SYSTEM
L1-SN151-47
Line End-Fitting
1 : Drop Tongue
2 : Clamp Top, Horizontal
4 : Clamp Top, Vertical
Mounting Base
(Type of Base, Hole Spacing, Hole Size)
1 : Rigid Curved Base
6 : 3/4”-10 UFS Stud Base
7 : 7/8”-9 UFS Stud Base
Suffix code for end fitting is also
noted in end fitting details section.
109
20
135
25x38
SLOT
127
305
254
84
353
25
13
19
22
11
ø44mm Vertical Line Post Insulator for 69 kV
18
Line Post Insulators
NGK-Locke Polymer Insulators, Inc.
44mm Core
Standard Leakage Shed (SN) Series
Horizontal Line Post
Rigid Curved Base Mounting
(Cat. No. L1-SNXX1-21)
Tensile Mechanical Rating
SML
Min RTL
44.4 kN
22.2 kN
22.2 kN
11.1 kN
Drop Tongue:
Clamp Top:
Typical
System
Voltage
Catalog
Number
No. of
Sheds
kV
Arcing
Distance
Leakage
Distance
mm
mm
Wet Power
Frequency
Withstand,*
kV
Dry Lightning
Impulse
Withstand,*
kV
Maximum
Design
Cantilever
Load**
(MDCL),
kN
Approximate
Weight,
kg
46
L1-SN091-21
9
330
879
115
185
6.7
8.9
46
L1-SN111-21
11
390
1071
130
215
5.8
9.3
46/69
L1-SN131-21
13
450
1263
150
245
5.1
9.7
69
L1-SN151-21
15
510
1455
165
280
4.5
10.1
69
L1-SN171-21
17
570
1647
180
310
4.1
10.6
69
L1-SN191-21
19
630
1839
200
340
3.7
11.0
69
L1-SN211-21
21
690
2031
215
375
3.4
11.4
* The tests are comply with IEC Pub. 61952.
** MDCL is 50% of the minimum average cantilever breaking load.
19
NGK-Locke Polymer Insulators, Inc.
Line Post Insulators
ø63mm LINE POST CATALOG NUMBER SYSTEM
L2-SN471-13-W
Line End-Fitting
1 : Drop Tongue
2 : Clamp Top, Horizontal
4 : Clamp Top, Vertical
5 : Flange with 127mm Bolt Circle (Short)
6 : Flange with 127mm Bolt Circle (Long)
R : Clevis
Suffix code for end fitting is also
noted in end fitting details section.
20
Mounting Base
(Type of Base, Hole Spacing, Hole Size)
1 : Rigid Curved Base, 305, 24
2 : Rigid Flat Base, 305, 24
3 : Bendable Curved Base, 305, 25 (LA230-B)
5 : Flange with 127mm Bolt Circle (Long)
7 : 7/8"-9 UFS Stud Base
8 : Bendable Flat Base, 305, 25 w/4-21 (LA231-B)
R : Clevis
Line Post Insulators
NGK-Locke Polymer Insulators, Inc.
63mm Core Polymer Line Post / End Fitting
Variety of End Fittings for Line Side
[1-]
[2-]
[4-]
[5-]
[R-]
ø21
Drop Tongue
The coupling dimensions are
in accordance with
ANSI C29.7 - 1992.
The coupling dimensions are
in accordance with
ANSI C29.7 - 1992.
Horizontal Clamp Top
Vertical Clamp Top
Flange
Clevis
Variety of End-Fittings for Line Side
[-2]
[-1]
[-5]
Rigid Curved Base
Rigid Flat Base
[-See list below]
Flange Base
[-See list below]
Bendable Curved Base
Bendable Flat Base
Dimensions
A
B
C
D
E (ø)
F (Slot)
Bendable Curved Base (LA230-B) [-3]
305
360
127
210
25
25 x 38
–
Bendable Flat Base (LA231-B) [-8]
305
360
102
254
25
25 x 38
254
G
H
I
J
–
–
12°
203
21 x 25
12°
(Units: mm)
21
Line Post Insulators
NGK-Locke Polymer Insulators, Inc.
63mm Core – Standard Leakage Shed (SN) Series
230 kV
Corona Ring Application
Horizontal
Alternate End Fitting
The dimensions are in millimeters.
Drop Tongue:
Clamp Top:
Typical
System
Voltage
Catalog
Number
No. of
Sheds
kV
“X”
Length
Arcing
Distance
Leakage
Distance
mm
mm
mm
Dry Lightning
Impulse
Withstand,*
kV
Maximum
Design
Cantilever
Load**
(MDCL),
kN
Approximate
Weight,
kg
69
L2-SN141-13
14
816
567
1470
195
325
12.7
23.3
69/115
L2-SN181-13
18
963
717
1890
245
405
10.6
24.9
69/115
L2-SN211-13
21
1073
830
2205
280
465
9.6
26.1
115
L2-SN251-13
25
1220
980
2625
315
545
8.5
27.8
115/138
L2-SN291-13
29
1366
1130
3045
360
620
7.4
29.4
115/138
L2-SN321-13
32
1476
1242
3360
385
675
6.8
30.7
138
L2-SN361-13
36
1623
1392
3780
425
755
6.1
32.3
161
L2-SN391-13
39
1733
1505
4095
450
815
5.7
33.5
161
L2-SN431-13
43
1880
1655
4515
485
895
5.2
35.2
230
L2-SN471-13
47
2027
1805
4935
515
970
4.8
36.8
230
L2-SN511-13
51
2173
1995
5335
545
1050
4.4
38.5
230
L2-SN551-13
55
2320
2105
5775
575
1125
4.1
40.1
230
L2-SN581-13
58
2430
2217
6090
600
1185
3.9
41.3
* The tests comply with IEC Pub. 61952.
** MDCL is 50% of the minimum average cantilever breaking load.
22
Wet Power
Frequency
Withstand,*
kV
Tensile Mechanical Rating
SML
Min RTL
66.7 kN
33.4kN
22.2kN
11.1 kN
Line Post Insulators
NGK-Locke Polymer Insulators, Inc.
63 mm Core – High Leakage Shed (SL) Series
230 kV
Corona Ring Application
Horizontal
Alternate End Fitting
The dimensions are in millimeters.
Drop Tongue:
Clamp Top:
Typical
System
Voltage
Catalog
Number
No. of
Sheds
kV
“X”
Length
Arcing
Distance
Leakage
Distance
mm
mm
mm
Tensile Mechanical Rating
SML
Min RTL
66.7 kN
33.4 kN
22.2 kN
11.1 kN
Wet Power
Frequency
Withstand,*
kV
Dry Lightning
Impulse
Withstand,*
kV
Maximum
Design
Cantilever
Load**
(MDCL),
kN
Approximate
Weight,
kg
69
L2-SL171-13
17
809
560
1750
195
325
12.9
23.8
69/115
L2-SL221-13
22
955
710
2244
240
405
10.7
25.6
69/115
L2-SL261-13
26
1073
830
2652
280
465
9.6
27.1
115
L2-SL311-13
31
1220
980
3178
315
545
8.5
28.9
115/138
L2-SL361-13
36
1366
1130
3672
360
620
7.4
30.7
115/138
L2-SL401-13
40
1484
1250
4080
390
680
6.8
32.2
138
L2-SL451-13
45
1630
1400
4606
425
760
6.1
34.1
161
L2-SL491-13
49
1748
1520
5014
455
825
5.6
35.5
161
L2-SL541-13
54
1895
1670
5508
485
900
5.1
37.3
230
L2-SL581-13
58
2012
1790
5916
515
960
4.8
38.8
230
L2-SL631-13
63
2159
1940
6442
545
1040
4.5
40.6
230
L2-SL681-13
68
2305
2090
6936
575
1120
4.2
42.4
230
L2-SL721-13
72
2423
2210
7344
600
1180
3.9
43.9
* The tests comply with IEC Pub. 61952.
** MDCL is 50% of the minimum average cantilever breaking load.
23
Suspension Insulators
NGK-Locke Polymer Insulators, Inc.
ø76mm LINE POST CATALOG NUMBER SYSTEM
L3-SN471-13-W
Line End-Fitting
1 : Drop Tongue
2 : Clamp Top, Horizontal
Mounting Base
(Type of Base, Hole Spacing, Hole Size)
3 : Bendable Curved Base, 356, 27 (LA301-B)
8 : Bendable Flat Base, 356, 27 w/4-24x28,
(LA302-B)
157
19
Suffix code for end fitting is also
noted in end fitting details section.
21
26 103
26x38
SLOT
356
356
Note: Flange base is available upon request. For more detailed information, contact NGK.
24
Line Post Insulators
NGK-Locke Polymer Insulators, Inc.
76mm Core – Standard Leakage Shed (SN) Series
230 kV
Corona Ring Application
Horizontal
Alternate End Fitting
The dimensions are in millimeters
Drop Tongue:
Clamp Top:
Typical
System
Voltage
Catalog
Number
No. of
Sheds
kV
“X”
Length
Arcing
Distance
Leakage
Distance
mm
mm
mm
Wet Power
Frequency
Withstand,*
kV
Dry Lightning
Impulse
Withstand,*
kV
Tensile Mechanical Rating
SML
Min RTL
66.7 kN
33.4 kN
22.2 kN
11.1 kN
Maximum
Design
Cantilever
Load**
(MDCL),
kN
Approximate
Weight,
kg
69
L3-SN231-13
23
1180
905
2588
300
505
14.3
38.0
115
L3-SN301-13
30
1431
1168
3375
370
635
11.3
41.9
138
L3-SN341-13
34
1574
1318
3825
405
715
10.1
44.2
161
L3-SN391-13
39
1754
1505
4388
450
815
8.9
47.1
161
L3-SN441-13
44
1933
1693
4950
490
910
8.0
49.9
230
L3-SN471-13
47
2041
1805
5288
515
970
7.5
51.6
230
L3-SN501-13
50
2148
1918
5625
540
1025
7.1
53.4
230
L3-SN531-13
53
2256
2030
5963
565
1090
6.7
55.1
230
L3-SN581-13
58
2435
2218
6525
600
1185
6.2
57.9
230
L3-SN611-13
61
2543
2330
6863
620
1245
5.9
59.6
230
L3-SN641-13
64
2650
2443
7200
640
1300
5.6
61.3
* The tests are comply with IEC Pub. 61952.
** MDCL is 50% of the minimum average cantilever breaking load.
25
Line Post Insulators
NGK-Locke Polymer Insulators, Inc.
ø88mm LINE POST CATALOG NUMBER SYSTEM
L4-SN621-13-X
Line End-Fitting
1 : Drop Tongue
2 : Clamp Top, Horizontal
Mounting Base
(Type of Base, Hole Spacing, Hole Size)
3 : Bendable Curved Base, 356, 27 (LA405-B)
8 : Bendable Flat Base, 356, 27, w/4-24x32
(LA406-B)
Suffix code for end fitting is also
noted in end fitting details section.
25.4
176.5
26
21
108
26x38.5
356
356
Note: Flange base is available upon request. For more detailed information, contact NGK.
26
Line Post Insulators
NGK-Locke Polymer Insulators, Inc.
88mm Core
Standard Leakage Shed (SN) Series
Drop Tongue:
Clamp Top:
Typical
System
Voltage
Catalog
Number
No. of
Sheds
kV
“X”
Length
Arcing
Distance
Leakage
Distance
mm
mm
mm
Wet Power
Frequency
Withstand,*
kV
Dry Lightning
Impulse
Withstand,*
kV
Tensile Mechanical Rating
SML
Min RTL
66.7 kN
33.4 kN
22.2 kN
11.1 kN
Maximum
Design
Cantilever
Load**
(MDCL),
kN
Approximate
Weight,
kg
69/115
L4-SN231-13
23
1223
905
2588
300
505
21.9
60.7
115
L4-SN281-13
28
1404
1093
3150
345
600
18.5
64.3
115/138
L4-SN321-13
32
1549
1243
3600
385
675
16.4
67.3
138
L4-SN361-13
36
1693
1393
4050
425
755
14.8
70.2
161
L4-SN391-13
39
1802
1505
4388
450
815
13.7
72.3
161
L4-SN441-13
44
1983
1693
4950
490
910
12.3
75.9
230
L4-SN501-13
50
2201
1918
5625
540
1025
10.9
80.3
230
L4-SN561-13
56
2418
2143
6300
585
1145
9.8
84.6
230
L4-SN621-13
62
2635
2368
6975
630
1260
8.9
88.9
345
L4-SN701-13
70
2925
2668
7875
685
1415
8.0
94.7
345/500
L4-SN791-13
79
3251
3005
8888
740
1595
7.1
101.2
* The tests comply with IEC Pub. 61952.
** MDCL is 50% of the minimum average cantilever breaking load.
27
NGK-Locke Polymer Insulators, Inc.
Packaging
All of NLPI’s insulators are packed in weatherproof containers in order to protect the products during land, air, and sea transportation. Several different grades of packaging can be offered depending on the mode of transport and the expected storage conditions. The packaging options that we
offer are shown below. Since the user best knows their crate requirements, they should select the
option that is most suited to their needs and include that information in the purchasing specification. Special packaging arrangements can be accommodated upon request.
Each container is marked with the number of insulators it contains, the catalog number, description
of the containers, the manufacturer’s name, and any other customer requests. Also, a “Polymer
Insulator Handling Instruction” sheet is included with all containers. This sheet states any necessary cautions during handling, transportation, and installation. If corona rings are to be included, a
corona ring installation sheet is also provided.
Standard Grade: Prefabricated Packaging
Suitable for:
• Moderate Amount of Handling
• Outdoor Storage
• Careful Stacking
Superior Grade: Closed Wooden Crate
Suitable for:
•
•
•
•
•
28
Excessive Amount of handling
Long Term Outdoor Storage
Crate Stacking
Large Quantities of Large Insulators
Transportation over Rough Roads
NGK-Locke Polymer Insulators, Inc.
1609 Diamond Springs Road, Virginia B each, Virginia 23455, U.S. A.
Tel: + 1(757) 460-3649 Fax: + 1(757) 460-3550
NGK INSULATORS, LTD.
U.S.A.
N G K-Locke, Inc.
2525 Insulator Drive
Baltimore, M aryland 21230, U.S. A.
Tel: + 1(410) 347-1700 Fax: + 1(410) 347-1724
Canada
N G K Insulators of Canada, Ltd.
Toronto Office
2700 M atheson Blvd. East,
Suite 700 East To w er,
Mississauga L4 W 4V9, O ntario, Canada
Tel: + 1(905) 602-1266 Fax: + 1(905) 238-8247
Montreal Office
1501, avenue M cGill College
Bureau 515
M ontreal (Q uebec) H3A 3 M 8, Canada
Tel: + 1(514) 281-8488 Fax: + 1(514) 281-8596
M A02005
Europe
N G K Europe, S.A.
Rue d’H erchies 184, B-7331 Baudour, B elgium
Tel: + 32(65) 76-1440 Fax: + 32(65) 64-3554
All Other Countries
N G K Insulators, Ltd.
O verseas Departm ent
M arunouchi Bldg. 25F
2-4-1, M arunouchi, Chiyoda-ku,
Tokyo 100-6325, Japan
Tel: 81(3) 6213-8813 Fax: 81(3) 6213-8888