Ref. 4098 - Leroy Somer

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Transcription

Ref. 4098 - Leroy Somer
Low Voltage Alternators - 4 pole
LSA 50.2 - 6 wires (12 wires optional)
1250 to 1640 kVA - 50 Hz / 1250 to 2000 kVA - 60 Hz
Electrical and mechanical data
Low Voltage Alternators - 4 pole
LSA 50.2 - 6 wires (12 wires optional) - 1250 to 1640 kVA - 50 Hz / 1250 to 2000 kVA - 60 Hz
Specially adapted to applications
The LSA 50.2 alternator is designed to be suitable for typical generator applications, such as: backup, marine applications, rental,
telecommunications, etc.
Compliant with international standards
The LSA 50.2 alternator conforms to the main international standards and regulations:
- IEC 60034, NEMA MG 1.32-33, ISO 8528-3, CSA / UL 1446 (UL 1004 on request), marine regulations, etc.
It can be integrated into a CE marked generator.
The LSA 50.2 is designed, manufactured and marketed in an ISO 9001 environment and ISO 14001.
Top of the range electrical performance
● Class H insulation.
● Standard 6 wire re-connectable winding, 2/3 pitch, type no. 6S (12 wires optional / winding no. 6).
● Voltage range 50 Hz: 380V - 400V - 415V - 440 V and 220V - 230V - 240V.
● Voltage range 60 Hz: 380V - 416V - 440V - 480V and 220 V - 240 V.
● High efficiency and motor starting capacity.
● Other voltages are possible with optional adapted windings:
- 50 Hz : 440 V (n° 7S), 500 V (n° 9S), 600 V (n° 22S or 23S), 690 V (n° 52S).
- 60 Hz : 380 V and 416 V (n° 8S), 600 V (n° 9S).
● R 791 interference suppression conforming to standard EN 55011 group 1 class B standard for European zone (CE marking).
Excitation and regulation system suited to the application
The LSA 50.2 can be supplied with AREP or PMG excitation system, according to the alternator spécification.
Excitation system
Regulation options
Volage
regulator
AREP
PMG
Current
transformer
for paralleling
Mains
paralleling
3-phase
sensing
3-phase sensing for
mains paralleling
unbalanced
Remote voltage
potentiometer
R450
Std
Option
C.T.
R726
-
R 734
√
D510C
Option
Option
C.T.
included
included
contact factory
√
√: Possible mounting
Protection system suited to the environment
● The LSA 50.2 is IP 23.
● Standard winding protection for clean environments with relative humidity ≤ 95 %, including indoor marine environments.
Options : - Filters on air inlet : derating 5%.
- Filters on air inlet and air outlet (IP 44) : derating 10%.
- Winding protections for harsh environments and relative humidity greater than 95%.
- Space heaters.
- Thermal protection for winding.
Reinforced mechanical structure using finite element modelling
● Compact and rigid assembly to better withstand generator vibrations.
● Steel frame.
● Cast iron flanges and shields.
● Twin-bearing and single-bearing versions designed to be suitable for engines on the market.
● Half-key balancing.
● Sealed for life ball bearings, regreasable bearings (optional).
● Standard direction of rotation : clockwise when looking at the drive end view (for anti-clockwise, derate the machine by 5%).
Accessible terminal box proportioned for optional equipment
● Easy access to the voltage regulator and to the connections.
● Possible inclusion of accessories for paralleling, protection and measurement.
● Connection bars for winding reconnection.
2
Electric Power Generation
Low Voltage Alternators - 4 pole
LSA 50.2 - 6 wires (12 wires optional) - 1250 to 1640 kVA - 50 Hz / 1250 to 2000 kVA - 60 Hz
General characteristics
Insulation class
Winding pitch
Number of wires
Protection
Altitude
Overspeed
Air flow
H
2/3
6 - (option 12)
IP 23
≤ 1000 m
2250 min-1
1.8m3/s, 50 Hz - 2.2m3/s, 60 Hz
Excitation system
AREP or PMG
AVR type
R 450
Voltage regulation (*)
± 0.5 %
Short-circuit current
300% (3 IN) : 10s
Totale Harmonic distortion THD (**) in no-load ....: < 3.5 % according to IEC
Totale Harmonic distortion THD (**) on linear load: < 3.5 % according to IEC
Waveform: NEMA = TIF (**)
< 50
(*) Regulator input voltage, steady state, within the below total harmonic distortion (THD) limits.
(**) Total harmonic distortion between phases, no-load or on-load (non-distorting).
Ratings 50 Hz - 1500 R.P.M.
kVA / kW - P.F. = 0.8
Duty/T°C
Class/T°K
Phase
Y
∆
Continuous duty/40°C
H/125°K
3 ph.
380V
400V
415V
220V
230V
240V
6 wires version winding no. 6S
LSA 50.2 M6
kVA 1250 1250 1250
kW 1000 1000 1000
LSA 50.2 L7
kVA 1350 1350 1350
kW 1080 1080 1080
LSA 50.2 L8
kVA 1450 1500 1500
kW 1160 1200 1200
LSA 50.2 VL10 kVA 1600 1640 1600
kW 1280 1312 1280
12 wires version winding no. 6 (option)
380V 400V 415V
Y
∆
YY
LSA 50.2 M6
LSA 50.2 L8
220V
230V
240V
1045
836
1250
1000
1100
880
1300
1040
1140
912
1350
1080
440V
Continuous duty/40°C
F/105°K
3 ph.
380V
400V
415V
220V
230V
240V
1190
952
1260
1008
1440
1152
1545
1236
1125
900
1215
972
1320
1056
1455
1164
1125
900
1215
972
1350
1080
1475
1180
1125
900
1215
972
1350
1080
1455
1164
440V
380V
400V
415V
220V
230V
240V
940
752
1125
900
990
792
1170
936
1026
821
1215
972
220V
kVA
kW
kVA
kW
1210
968
1430
1144
440V
Stand-by/40°C
H/150°K
3 ph.
380V
400V
415V
220V
230V
240V
1095
876
1150
920
1320
1056
1420
1136
1315
1052
1420
1136
1520
1216
1680
1344
1315
1052
1420
1136
1575
1260
1720
1376
1315
1052
1420
1136
1575
1260
1680
1344
440V
380V
400V
415V
220V
230V
240V
1045
836
1250
1000
1100
880
1300
1040
1140
912
1350
1080
220V
1287
1030
1089
871
Stand-by/27°C
H/163°K
3 ph.
440V
380V
400V
415V
220V
230V
240V
1275
1020
1365
1092
1555
1244
1670
1336
1375
1100
1485
1188
1595
1276
1760
1408
1375
1100
1485
1188
1650
1320
1800
1440
1375
1100
1485
1188
1650
1320
1760
1408
1330
1064
1425
1140
1625
1300
1730
1384
440V
380V
400V
415V
440V
220V
230V
240V
1045
836
1250
1000
1100
880
1300
1040
1140
912
1350
1080
220V
1210
968
1430
1144
440V
220V
1210
968
1430
1144
Ratings 60 Hz - 1800 R.P.M.
kVA / kW - P.F. = 0.8
Duty/T°C
Class/T°K
Phase
Y
∆
Continuous duty/40°C
H/125°K
3 ph.
380V
416V
220V
240V
440V
6 wires version winding n°6S
LSA 50.2 M6
kVA 1285 1405 1455
kW 1028 1124 1164
LSA 50.2 L7
kVA 1375 1500 1555
kW 1100 1200 1244
LSA 50.2 L8
kVA 1485 1625 1720
kW 1188 1300 1376
LSA 50.2 VL10 kVA 1635 1785 1860
kW 1308 1428 1488
12 wires version winding n°6 (option)
380V 416V 440V
Y
∆
YY
LSA 50.2 S4
LSA 50.2 M6
LSA 50.2 L8
kVA
kW
kVA
kW
kVA
kW
480V
Continuous duty/40°C
F/105°K
3 ph.
380V
416V
220V
240V
1560
1250
1680
1344
1875
1500
2000
1600
1155
924
1240
992
1335
1068
1470
1176
1265
1012
1350
1080
1460
1168
1605
1284
1310
1048
1400
1120
1550
1240
1675
1340
480V
380V
416V
440V
220V
240V
240V
220V
240V
240V
208V
220V
240V
990
792
1210
968
1430
1144
1080
864
1320
1056
1565
1252
1145
916
1400
1120
1655
1324
1250
1000
1525
1220
1800
1440
891
713
1089
871
1287
1029
440V
480V
Stand-by/40°C
H/150°K
3 ph.
380V
416V
220V
240V
1405
1124
1510
1208
1685
1350
1800
1440
1350
1080
1440
1152
1560
1250
1715
1372
1475
1180
1575
1260
1705
1364
1875
1500
1530
1224
1630
1304
1805
1444
1950
1560
480V
380V
416V
440V
220V
240V
240V
208V
220V
240V
990
792
1210
968
1430
1144
1080
864
1320
1056
1565
1252
1145
916
1400
1120
1655
1324
1250
1000
1525
1220
1800
1440
208V
220V
240V
972
778
1188
950
1409
1127
1030
824
1260
1008
1490
1192
1125
900
1372
1098
1620
1296
Electric Power Generation
440V
Stand-by/27°C
H/163°K
3 ph.
480V
380V
416V
220V
240V
440V
480V
1640
1312
1765
1412
1965
1572
2100
1680
1410
1128
1510
1208
1630
1304
1800
1440
1545
1236
1650
1320
1785
1428
1965
1572
1600
1280
1710
1368
1890
1512
2050
1640
1720
1376
1850
1480
2060
1650
2200
1760
480V
380V
416V
440V
480V
220V
240V
240V
208V
220V
240V
990
792
1210
968
1430
1144
1080
864
1320
1056
1565
1252
1145
916
1400
1120
1655
1324
1250
1000
1525
1220
1800
1440
3
Low Voltage Alternators - 4 pole
LSA 50.2 - 6 wires (12 wires optional) - 1250 to 1640 kVA - 50 Hz / 1250 to 2000 kVA - 60 Hz
Efficiencies 50 Hz - 6 wires version (12 wires optional)
LSA 50.2 M6 - (version: 6 wires)
97%
96
96.6
96.3
200
600
800
1000
96.7
96.3
95.6
P. F.: 0.8
94.3
94
0
200
400
600
800
1000
1200
1400
LSA 50.2 M6 - (version: 12 wires)
97%
96.6
96
93
1600kVA
96.5
95.3
94
95.5
95.2
400
600
800
1000
1200
1400 kVA
93
1000
1200
97
1400
96.9
1600
1800
2000kVA
94.9
200
P. F.: 1
96.8
95.6
96
95.9
95.5
P. F.: 0.8
94.4
400
600
800
1000
1200
LSA 50.2 L8 (version: 12 wires)
96.3
1400
96.7
96.8
1800
2000kVA
P. F.: 1
96.7
95.8
95.6
1600
95.6
94.2
94
P. F.: 0.8
93.2
200
800
96.7
95
95.1
93.7
0
600
96
96.1
95
400
LSA 50.2 VL10 - (version: 6 wires)
97%
P. F.: 1
96.6
200
94
93.8
95.2
94.3
95
95.1
95.4
95.8
P. F.: 0.8
96
95.3
P. F.: 1
94.8
97%
96.6
95.5
95
1400 kVA
P. F.: 1
96.6
96
1200
93
96.7
96.9
95.8
94
P. F.: 0.8
400
96.6
95
94.9
LSA 50.2 L7 - (version: 6 wires)
97%
93
95.1
95.5
93.8
0
96.8
96
94.4
94
93
96.4
95.5
95
93
96.5
LSA 50.2 L8 - (version: 6 wires)
97%
P. F.: 1
95.4
P. F.: 0.8
93.7
0
200
400
600
800
1000
1200
1400
1600kVA
Reactances (%). Time constants (ms) - Class H / 400 V - 6 wires version (12 wires optional)
Kcc
Xd
Xq
T’do
X’d
T’d
X”d
T”d
X”q
Xo
X2
Ta
Short-circuit ratio
Direct-axis synchro. reactance unsaturated
Quadrature-axis synchro. reactance unsaturated
No-load transient time constant
Direct-axis transient reactance saturated
Short-circuit transient time constant
Direct-axis subtransient reactance saturated
Subtransient time constant
Quadrature-axis subtransient reactance saturated
Zero sequence reactance unsaturated
Negative sequence reactance saturated
Armature time constant
M6 (6f)
0.31
392
235
3634
19.4
180
16.5
18
17.3
3.6
16.9
27
L7 (6f)
0.34
364
218
3750
17.4
180
14.8
18
15.5
3.6
15.2
27
L8 (6f)
0.31
378
227
3910
17.4
180
14.8
18
15.4
3.3
15.1
27
VL10 (6f)
0.33
362
217
4058
16.0
180
13.6
18
14.2
3.1
13.9
27
M6 (12f)
0.36
345
207
3634
17.0
180
14.5
18
15.2
3.60
14.89
27.0
L8 (12f)
0.37
329
197
4247
13.9
180
11.8
18
13.4
3.30
12.67
27.0
0.9
4.1
44
500
2895
13.5
13960
51240
1.0
4.0
44
500
3181
12.4
15260
53260
0.9
3.9
42
500
3701
12.4
15420
57110
0.9
3.7
41
500
4248
11.7
16520
59020
0.82
3.21
40.3
500
2300
12.3
14025
43515
0.80
3.01
37.9
500
3325
10.5
15310
47696
Other class H/400 V data
io (A)
ic (A)
uc (V)
ms
kVA
%
W
W
4
No-load excitation current
On-load excitation current
On-load excitation voltage
Response time (∆U = 20% transient)
Start (∆U = 20% cont. or 50% trans.)
Transient ∆U (on-load 4/4) - P.F.: 0.8 LAG
No-load losses
Heat dissipation
Electric Power Generation
Low Voltage Alternators - 4 pole
LSA 50.2 - 6 wires (12 wires optional) - 1250 to 1640 kVA - 50 Hz / 1250 to 2000 kVA - 60 Hz
Transient voltage variation 400V - 50 Hz - 6 wires version (12 wires optional)
Phase loading (AREP or PMG system)
M6 - (12 w)
20 %
M6 - (6 w)
L7 - (6 w)
L8 - (6 w)
Voltage drop
15
L8 - (12 w)
VL10 - (6 w)
10
5
0
0
200
400
600
800
1000
1200
1400
1600
1800
2000 kVA
kVA at P.F. 0.8
Load shedding (AREP or PMG system)
M6 - (6 w)
M6 - (12 w)
20 %
L7 - (6 w)
L8 - (6 w)
L8 - (12 w)
VL10 - (6 w)
Voltage rise
15
10
5
0
0
200
400
600
800
1000
1200
1400
1600
1800
2000 kVA
kVA at P.F. 0.8
Motor starting (AREP or PMG system)
M6 - (12 w) M6 - (6 w)
30%
L7 - (6 w)
L 7 L8 - (6 Lw)8
L8 - (12 w)
VL10
VL10 - (6 w)
25
Voltage drop
20
15
12%
10
5
0
0
500
1000
1500
1430
2000
2500
3000
3500
4000
4500 kVA
Locked rotor kVA
) For a PF
a than
φ other
than
multiply
kVA
K = Sinby
φ /K0.8
1) For a1starting
P.F.with
other
0.6,
the 0.6,
starting
kVA the
must
be by
multiplied
= Sine P.F. / 0.8
Example
of calculation
for aP.F.
PFother
with athan
φ other
0.6:
motor
starting
kVA calculated
PF 0.4
= 1250 kVA
Calculation
example
for a different
0.6: than
Starter
motor
kVA
calculated
at 0.4 P.F. =at1250
kVA
= 0.9165
K = 1.145
corrected =
kVA
= 1430
Voltage
drop for VL10 =to12
%. = 12%.
➤ Sin P.F. Sin
0.4φ=0.4
0.9165
➤ K = 1.145
➤ kVA corrected
1430
kVA kVA
➤ Voltage
dip corresponding
VL10
2 2 or (230/U)
2 ) For aother
voltage
U 400V
other (Y),
than230V
400 V(D)
(Y),
230Hz,
V (then
) atkVA
50 must
Hz, multiply
the kVA
(400/U)
2) For voltages
than
at 50
be multiplied
byby
(400/U)
or (230/U)2. 2.
Electric Power Generation
5
Low Voltage Alternators - 4 pole
LSA 50.2 - 6 wires (12 wires optional) - 1250 to 1640 kVA - 50 Hz / 1250 to 2000 kVA - 60 Hz
Efficiencies 60 Hz - 6 wires version (12 wires optional)
LSA 50.2 M6 - (version: 6 wires)
96%
P. F.: 1
96.3
96.3
96.3
95.7
95
P. F.: 0.8
95
95.3
95
96.6
96
96.1
92.7
200
400
600
1000
800
1400
1200
LSA 50.2 L7 - (version: 6 wires)
96%
P. F.: 0.8
95.2
95.4
93
93.7
200
95
93.3
600
400
800 1000 1200 1400 1600 1800 2000 2200 kVA
94
96
92.7
400
600
800
1000
1200
1400
1600
1800
2000 kVA
93
96.7
P. F.: 0.8
96.1
95.8
95.5
94
93.2
93.8
200
600
96.3
93
93
95.2
95
94.7
94.5
92
92.2
0
200
91.8
400
600
800
1000
1200
1400 kVA
600
800
1000
1200
1400
1600
1800kVA
95.5
95.3
95
P. F.: 1
96.6
96.5
96
93
94.8
92.6
400
96
94
93
P. F.: 0.8
95
95.2
LSA 50.2 L8 - (version: 12 wires)
97%
P. F.: 1
P. F.: 0.8
94.8
94.4
94
96
200
P. F.: 1
96.3
94.9
94
96
96.3
95.7
95
95.9
95.5
1000 1200 1400 1600 1800 2000 2200 kVA
800
96 %
0
95.6
93.4
400
LSA 50.2 M6 - (version: 12 wires)
LSA 50.2 S4 - (version: 12 wires)
P. F.: 1
96.7
96.7
95
96%
95.2
P. F.: 0.8
LSA 50.2 VL10 - (version: 6 wires)
97%
96.4
95.8
95
1800 kVA
1600
P. F.: 1
96.5
96.4
200
95.3
95.6
95.4
P. F.: 1
94
93.2
93
96.5
96.6
95
94.8
94
93
LSA 50.2 L8 - (version: 6 wires)
97%
96.5
96.3
P. F.: 0.8
95.2
93.5
93.1
200
400
600
800
1000
1200
1400
1600
1800
2000kVA
Reactances (%). Time constants (ms) - Class H / 480 V - 6 wires version (12 wires optional)
Kcc
Xd
Xq
T’do
X’d
T’d
X”d
T”d
X”q
Xo
X2
Ta
Short-circuit ratio
Direct-axis synchro. reactance unsaturated
Quadrature-axis synchro. reactance unsaturated
No-load transient time constant
Direct-axis transient reactance saturated
Short-circuit transient time constant
Direct-axis subtransient reactance saturated
Subtransient time constant
Quadrature-axis subtransient reactance saturated
Zero sequence reactance unsaturated
Negative sequence reactance saturated
Armature time constant
Other class H/480 V data
io (A)
ic (A)
uc (V)
ms
kVA
%
W
W
6
No-load excitation current
On-load excitation current
On-load excitation voltage
Response time (∆U = 20% transient)
Start (∆U = 20% cont. or 50% trans.)
Transient ∆U (on-load 4/4) - P.F.: 0.8 LAG
No-load losses
Heat dissipation
M6 (6f)
0.29
407
244
3634
20.2
180
17.1
18
18.0
3.7
17.6
27
L7 (6f)
0.33
377
226
3750
18.1
180
15.4
18
16.1
3.7
15.8
27
L8 (6f)
0.30
394
236
3910
18.1
180
15.4
18
16.1
3.5
15.8
27
VL10 (6f)
0.32
368
220
4058
16.3
180
13.8
18
14.4
3.1
14.2
27
S4(12f)
0.30
394
236
3411
20.8
180
17.7
18
18.6
3.90
18.19
27.0
M6(12f)
0.31
398
239
3634
19.7
180
16.7
18
17.6
3.70
17.21
27.0
L8(12f)
0.32
380
228
4247
16.1
180
13.7
18
13.4
3.50
14.62
27.0
0.9
4.2
46
500
3553
13.9
22000
64830
0.9
4.1
45
500
3927
12.8
23820
67290
0.9
4.0
44
500
4593
12.8
24080
72430
0.9
3.7
41
500
5281
11.8
25640
72720
0.78
3.48
43.9
500
2148.5
14.3
20431
55785
0.82
3.60
45.3
500
2766.5
13.7
22067
63639
0.79
3.37
42.4
500
3993.9
11.7
23904
69741
Electric Power Generation
Low Voltage Alternators - 4 pole
LSA 50.2 - 6 wires (12 wires optional) - 1250 to 1640 kVA - 50 Hz / 1250 to 2000 kVA - 60 Hz
Transient voltage variation 480V - 60 Hz - 6 wires version (12 wires optional)
Phase loading (AREP or PMG system)
S 4 - (12 w)
20 %
M6 - (12 w)
M6 - (6 w)
L7 - (6 w)
L8 - (6 w)
L8 - (12 w)
Voltage drop
15
VL10 - (6 w)
10
5
0
0
250
500
750
1000
1250
1500
1750
2000
2250
2500 kVA
kVA at P.F. 0.8
Load shedding (AREP or PMG system)
20 %
L8 - (6 w)
M6 - (6 w)
S 4 - (12 w)
M6 - (12 w)
L7 - (6 w)
L8 - (12 w)
VL10 - (6 w)
Voltage rise
15
10
5
0
0
250
500
750
1000
1250
1500
1750
2000
2250
2500 kVA
kVA at P.F. 0.8
Motor starting (AREP or PMG system)
S 4 - (12 w)
30%
L8 - (6 w)
M6 - (6 w)
M6 - (12 w)
L7 - (6 w)
L8 - (12 w)
VL10 - (6 w)
Voltage drop
25
13%
20
15
10
5
0
0
500
1000
1500
2000
2500
3000
1786
Locked rotor kVA
3500
4000
4500
5000 kVA
) For a PF
a than
φ other
than
multiply
kVA
K = Sinby
φ /K0.8
1) For a1starting
P.F.with
other
0.6,
the 0.6,
starting
kVA the
must
be by
multiplied
= Sine P.F. / 0.8
Example
of calculation
for aP.F.
PFother
with athan
φ other
0.6:
motor
starting
kVA calculated
PF 0.4
= 1560 kVA
Calculation
example
for a different
0.6: than
Starter
motor
kVA
calculated
at 0.4 P.F. =at1560
kVA
= 0.9165
K = 1.145
corrected =
kVA
= 1786
Voltage
drop for VL10 =to13
%. = 13%.
➤ Sin P.F. Sin
0.4φ=0.4
0.9165
➤ K = 1.145
➤ kVA corrected
1786
kVA kVA
➤ Voltage
dip corresponding
VL10
2 ) For aother
voltage
U 480V
other (Y),
than277V
480 V(D),
(Y),
277 (YY)
V ( at
), 240
V (YY
12 wires
at 60 Hzby (480/U)2 or (277/U)2 or (240/U)2.
2) For voltages
than
240V
60 Hz,
then- kVA
mustonly)
be multiplied
multiply the kVA by (480/U) 2 or (277/U) 2 or (240/U) 2 .
Electric Power Generation
7
Low Voltage Alternators - 4 pole
LSA 50.2 - 6 wires (12 wires optional) - 1250 to 1640 kVA - 50 Hz / 1250 to 2000 kVA - 60 Hz
3-phase short-circuit curves at no load and rated speed (star connection Y)
100000
Current (A)
LSA 50.2 S4
Symmetrical
Asymmetrical
10000
1000
1
10
100
1000
10000
100000
time (ms)
100000
Symmetrical
Asymmetrical
Current (A)
LSA 50.2 M6
10000
1000
1
10
100
1000
10000
100000
time (ms)
100000
Symmetrical
Asymmetrical
LSA 50.2 L7
Current (A)
10000
1000
1
10
100
1000
10000
100000
time (ms)
100000
Current (A)
LSA 50.2 L8
Symmetrical
Asymmetrical
10000
1000
1
10
100
1000
10000
100000
time (ms)
Influence due to connection
Curves shown are for star (Y) connection.
For other connections, use the following multiplication factors:
- Series delta : current value x 1.732 - Parallel star : current value x 2
8
Electric Power Generation
Low Voltage Alternators - 4 pole
LSA 50.2 - 6 wires (12 wires optional) - 1250 to 1640 kVA - 50 Hz / 1250 to 2000 kVA - 60 Hz
3-phase short-circuit curves at no load and rated speed (star connection Y)
100000
Symmetrical
Asymmetrical
Current (A)
LSA 50.2 VL10
10000
1000
1
10
100
100
10000
100000
time (ms)
Influence due to short-circuit
Curves are based on a three-phase
short-circuit.
For other types of short-circuit,
use the following multiplication factors.
3-phase
2-phase L/L
1-phase L/N
Instantaneous (max.)
1
0.87
1.3
Continuous
1
1.5
2.2
5 sec.
2 sec.
Maximum duration (AREP/PMG) 10 sec.
Electric Power Generation
9
Low Voltage Alternators - 4 pole
LSA 50.2 - 6 wires (12 wires optional) - 1250 to 1640 kVA - 50 Hz / 1250 to 2000 kVA - 60 Hz
Single bearing dimensions
Y DIA, X eq. sp. hole on U PCD
810
11°15'
L
LB
160
Xg
AH
48
809
8
753
Cable
output
8
1203
Air outlet
470
210
7
Air inlet
1 hole M24
240
1 hole Ø 35
800
Dimensions (mm) and weight
Type
L without PMG
214
Access to
rectifiers
100
50
36
+1
450 - 2
Ø 284
PMG option
25
M12
Ø 786
Ø 368
- 0.050
Ø BX - 0.100
0
Ø N - 0.127
ØP
Access to
A.V.R.
600
700
50
S DIA, XBG eq. sp. hole on M PCD
LB
Xg
Weight (kg)
Coupling
Flex plate
18
LSA 50.2 S4
1302
1278
620
2290
Flange S.A.E 0
X
LSA 50.2 M6
1402
1378
640
2490
Flange S.A.E 00
X
LSA 50.2 L7
1502
1478
690
2760
LSA 50.2 L8
1502
1478
710
2980
LSA 50.2 VL10
1602
1578
760
3260
Flange (mm)
S.A.E.
P
21
X
Flex plate (mm)
N
M
XBG
β°
S.A.E.
BX
U
X
Y
0
880
647.7
679.5
16
14
21
673.1
641.3
12
18
0
00
880
787.4
850.9
16
14
18
571.5
542.9
6
18
15.7
Torsional analysis data
AH
Lr
Ø 100
Ø 140
Ø 145
Ø 188.5
Ø 170
Ø 160
Ø 130
Xr
Centre of gravity: Xr (mm), Rotor length: Lr (mm), Weight: M (kg), Moment of inertia: J (kgm2): (4J = MD2)
Flange S.A.E. 18
Flange S.A.E. 21
Xr
Lr
M
J
Xr
Lr
M
Type
LSA 50.2 S4
564
1320.5
LSA 50.2 M6
608
1420.5
LSA 50.2 L7
643
1520.5
LSA 50.2 L8
667
1520.5
LSA 50.2 VL 10
714
1620.5
833
18.17
549
1320.5
934
20.6
593
1005
22.23
627
1082
24.6
1192
27.27
J
831
18.62
1420.5
932
21.09
1520.5
1003
22.68
652
1520.5
1081
25.05
698
1620.5
1191
27.72
NOTE : Dimensions are for information only and may be subject to modifications. Contractuel 2D drawings can be downloaded from the LeroySomer site, 3D drawing files are available upon request.
10
Electric Power Generation
Low Voltage Alternators - 4 pole
LSA 50.2 - 6 wires (12 wires optional) - 1250 to 1640 kVA - 50 Hz / 1250 to 2000 kVA - 60 Hz
Two bearing dimensions
M12 DIA, 16 eq. sp. hole on 850.9 PCD
810
11°15'
L
LB
160
Xg
210
48
809
425
Dimensions (mm) and weight
Type
LSA 50.2 S4
LSA 50.2 M6
LSA 50.2 L7
LSA 50.2 L8
LSA 50.2 VL10
405
Air inlet
214
60
L without PMG
1488
1588
1688
1688
1788
0
25
PMG option
Access to
rectifiers
100
50
LB
1278
1378
1478
1478
1578
Torsional analysis data
600
700
36
450 - 1
32
Ø 786
M12
Ø 368
2x2 hole Ø 35
2x2 hole M24
7
109
18
685
285
1203
Access to
A.V.R.
Ø120 m6
0
Ø 787.4 - 0.127
Ø 880
Air outlet
753
Cable
output
210
50
Xg
600
620
670
690
740
Weight (kg)
2330
2530
2800
3010
3300
Xr
Ø 100
Ø 140
Ø 145
Ø 188.5
Ø 170
Ø 160
Ø 130
Ø 120
210
Lr
Centre of gravity: Xr (mm), Rotor length: Lr (mm), Weight: M (kg), Moment of inertia: J (kgm2): (4J = MD2)
Type
LSA 50.2 S4
LSA 50.2 M6
LSA 50.2 L7
LSA 50.2 L8
LSA 50.2 VL10
Xr
590
632
667
690
736
Lr
1509
1609
1709
1709
1809
M
761
862
932
1010
1120
J
16.58
19.05
20.63
23
25.67
NOTE : Dimensions are for information only and may be subject to modifications. Contractuel 2D drawings can be downloaded from the LeroySomer site, 3D drawing files are available upon request.
Electric Power Generation
11
www.emersonindustrial.com
© Emerson 2014. The information contained in this brochure is for guidance only and does not
form part of any contract. The accuracy cannot be guaranteed as Emerson have an ongoing
process of development and reserve the right to change the specification of their products
without notice.
Moteurs Leroy-Somer SAS. Headquarters: Bd Marcellin Leroy, CS 10015, 16915 Angoulême
Cedex 9, France. Share Capital: 65 800 512 €, RCS Angoulême 338 567 258.
4098 en - 2015.03 / f

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