Low Voltage Alternators - 4 pole
LSA 49.3
660 to 1000 kVA - 50 Hz / 825 to 1250 kVA - 60 Hz
Electrical and mechanical data
Low Voltage Alternators - 4 pole
LSA 49.3 - 660 to 1000 kVA - 50 Hz / 825 to 1250 kVA - 60 Hz
Specially adapted to applications
The LSA 49.3 alternator is designed to be suitable for typical generator applications, such as: backup, marine applications, rental,
telecommunications, etc.
Compliant with international standards
The LSA 49.3 alternator conforms to the main international standards and regulations:
- IEC 60034, NEMA MG 1.32-33, ISO 8528-3, CSA C22.2 n°100-14, UL 1446 (UL 1004 on request), marine regulations, etc.
It can be integrated into a CE marked generator.
The LSA 49.3 is designed, manufactured and marketed in an ISO 9001 and ISO 14001 environment.
Top of the range electrical performance
● Class H insulation.
● Standard 6-wire re-connectable winding, 2/3 pitch, type no. 6S (12-wire on request).
● Voltage range 50 Hz: 380V - 400V - 415V and 220V - 230V - 240V.
● Voltage range 60 Hz: 380V - 416V - 440V - 480V and 220V - 240V.
● High efficiency and motor starting capacity.
● Other voltages are possible with optional adapted windings:
- 50 Hz : 440 V (n° 7), 500 V (n° 9), 600 V (n° 22 or 23), 690 V (n° 10 or 52).
- 60 Hz : 380 V and 416 V (n° 8), 600 V (n° 9).
● R 791 interference suppression conforming to standard EN 61000-6-3, EN 61000-6-2, EN 55011 group 1 class B standard for
European zone (CE marking).
Excitation and regulation system suited to the application
Excitation system
Regulation options
C.T.
Volage
regulator
AREP
PMG (option)
Current transformer
for paralleling
R450 M
R450
R450
R450 T
Option
D510 C
Option
Mains
paralleling
3-phase
sensing
Remote voltage
potentiometer
√
-
-
√
Option
√
Included
Included
√
Option
√
Included
Included
√
√ : possible mounting
Protection system suited to the environment
● The LSA 49.3 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 and shields.
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 bar for reconnecting voltage.
2
Electric Power Generation
Low Voltage Alternators - 4 pole
LSA 49.3 - 660 to 1000 kVA - 50 Hz / 825 to 1250 kVA - 60 Hz
General characteristics
Insulation class
Winding pitch
Number of wires
Protection
Altitude
Overspeed
Air flow
H
2/3 (winding 6S)
6 (12 option)
IP 23
≤ 1000 m
2250 min-1
3
1 m /s (50Hz) / 1.2 m3/s (60Hz)
Excitation system
AVR type
Voltage regulation (*)
Short-circuit current
Totale Harmonic distortion THD (**)
Waveform: NEMA = TIF (**)
Waveform: IEC = FHT (**)
AREP
R 450
± 0.5 %
300% (3 IN) : 10s
at no load < 4 % - on load < 4 %
< 50
<2%
(*) Steady state. (**) 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.
∆
YY
49.3 S4
49.3 M6
49.3 M8
49.3 L9
49.3 L10
380V
400V
415V
220V
230V
240V
-
660
528
730
584
820
656
910
728
1000
800
-
440V
Continuous duty/40°C
F/105°K
3 ph.
380V
400V
415V
220V
230V
240V
-
595
476
660
528
760
608
820
656
900
720
-
220V
kVA
kW
kVA
kW
kVA
kW
kVA
kW
kVA
kW
620
496
665
532
810
648
820
656
950
760
440V
Stand-by/40°C
H/150°K
3 ph.
380V
400V
415V
220V
230V
240V
-
725
580
780
624
910
728
1000
800
1085
868
-
220V
Stand-by/27°C
H/163°K
3 ph.
440V
380V
400V
415V
220V
230V
240V
-
745
596
810
648
945
756
1020
816
1130
904
-
220V
560
448
600
480
710
568
740
592
840
672
685
548
730
584
885
708
920
736
1030
824
440V
220V
715
572
765
612
925
740
965
772
1080
864
Ratings 60 Hz - 1800 R.P.M.
kVA / kW - P.F. = 0.8
Duty/T°C
Class/T°K
Continuous duty/40°C
H/125°K
3 ph.
Phase
Y
∆
YY
49.3 S4
49.3 M6
49.3 M8
49.3 L9
49.3 L10
Continuous duty/40°C
F/105°K
kVA
kW
kVA
kW
kVA
kW
kVA
kW
kVA
kW
380V
416V
220V
240V
653
522
725
580
815
652
905
724
990
792
440V
Stand-by/40°C
H/150°K
3 ph.
480V
208V
220V
240V
715
572
795
636
890
712
990
792
1083
866
756
605
840
672
940
752
1045
836
1146
917
825
660
915
732
1025
820
1140
912
1250
1000
380V
416V
220V
240V
588
470
655
524
735
588
815
652
891
713
440V
Stand-by/27°C
H/163°K
3 ph.
480V
208V
220V
240V
644
515
715
572
805
644
895
716
975
780
681
545
760
608
850
680
940
752
1031
825
743
594
825
660
925
740
1025
820
1125
900
380V
416V
220V
240V
693
554
770
616
865
692
960
768
1049
839
Electric Power Generation
440V
3 ph.
480V
208V
220V
240V
758
606
845
676
945
756
1050
840
1148
918
802
642
890
712
1000
800
1110
888
1215
972
875
700
970
776
1090
872
1210
968
1325
1060
380V
416V
220V
240V
718
574
800
640
895
716
1000
800
1089
871
440V
480V
208V
220V
240V
787
630
875
700
980
784
1090
872
1192
954
832
666
925
740
1040
832
1155
924
1260
1008
908
726
1005
804
1130
904
1255
1004
1375
1100
3
Low Voltage Alternators - 4 pole
LSA 49.3 - 660 to 1000 kVA - 50 Hz / 825 to 1250 kVA - 60 Hz
Efficiencies 400V - 50 Hz (..... P.F.: 1) (— P.F.: 0.8)
LSA 49.3 S4
%
LSA 49.3 L9
%
97,0
97,0
95,8
96,0
96,7
96,6
96,0 95,9
96,1
96,1
96,0
95,0
94,7
93,7
94,0
93,0
92,0
95,0
94,6
94,1 93,9
250
350
450
550
650
750
850
93,0
200
kVA
300
400
96,1
95,6
94,0
96,0
94,3
94,1
92,3
250
kVA
350
450
550
650
750
95,6
94,7
900
1000
96,7
96,6
1100
850
93,0
95,6
95,2 95,0
94,1
94,0
93,0
150
800
96,0
95,0
94,7
93,1
50
700
96,8
96,5
95,0
94,5
600
LSA 49.3 L10
97,0
96,0
92,0
500
%
96,1
95,0
93,3
100
LSA 49.3 M6
%
97,0
95,2
93,9
94,0
kVA
150
95,4
95,2
92,9
50
96,6
kVA
100
200
300
400
500
600
700
800
900
1000
1100
LSA 49.3 M8
%
97,0
96,4
96,2
96,3
96,2
96,0
95,0
95,2
94,3
95,1
94,6
94,0
94,3
93,6
93,0
kVA
50
150
250
350
450
550
650
750
850
950
Reactances (%). Time constants (ms) - Class H / 400 V
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 / 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 30% trans.)
Transient ∆U (on-load 4/4) - P.F.: 0.8 LAG
No-load losses
Heat dissipation
S4
0.36
350
210
2002
17.5
100
14.0
10
16.3
0.35
15.2
15
M6
0.42
294
176
2074
14.2
100
11.3
10
12.8
0.48
12.1
15
M8
0.34
348
209
2094
16.6
100
13.3
10
14.9
0.61
14.1
15
L9
0.47
303
182
2138
14.1
100
11.3
10
12.4
0.78
11.9
15
L10
0.38
348
209
2153
16.1
100
12.9
10
14.1
0.33
13.5
15
1.1
4.2
57
500
1350
13
8233
32519
1
4.1
55
500
1452
11
10288
34995
1
3.8
51
500
1708
12
9226
37082
1
3.7
49
500
2211
11
11189
36425
1
3.8
51
500
2211
12
10343
39772
Electric Power Generation
Low Voltage Alternators - 4 pole
LSA 49.3 - 660 to 1000 kVA - 50 Hz / 825 to 1250 kVA - 60 Hz
Transient voltage variation 400V - 50 Hz
AREP or PMG system
Load application
20%
S4
Voltage drop
15%
M6
M8
L9
L10
10%
5%
0%
0
100
200
300
400
500
600
700
800
900
1000
kVA at 0.8 P.F.
Load rejection
S4
20%
M6
M8
Voltage rise
15%
L9
L10
10%
5%
0%
0
100
200
300
400
500
600
700
800
900
1000
kVA at 0.8 P.F.
Motor starting
S4
30%
M6
L9
L10
M8
Voltage drop
25%
20%
15%
10%
5%
0%
0
250
500
750
1000
1250
1500
1750
2000
2250
2500
Locked rotor kVA at 0.6 P.F.
1) For a starting P.F. other than 0.6, the starting kVA must be multiplied by K = Sine P.F. / 0.8
2) For voltages other than 400V (Y), 230V (D) at 50 Hz, then kVA must be multiplied by (400/U)2 or (230/U)2.
Electric Power Generation
5
Low Voltage Alternators - 4 pole
LSA 49.3 - 660 to 1000 kVA - 50 Hz / 825 to 1250 kVA - 60 Hz
Efficiencies 480V - 60 Hz (..... P.F.: 1) (— P.F.: 0.8)
LSA 49.3 S4
%
97,0
95,9
95,9
95,3
96,0
95,8
94,5
94,3
94,2
92,5
93,0
92,0
200
94,0
kVA
300
400
500
600
700
800
900
1000
LSA 49.3 M6
92,0
92,4
200
300
kVA
400
500
600
700
95,9
95,8
96,0
95,9
94,0
94,5
94,1
94,3
93,0
94,0
91,9
100
200
91,3
kVA
300
400
500
600
700
800
900
1000
1100
93,0
1000
1100
1200
96,6
96,6
95,5
95,3
95,3 95,1
93,8
93,3
200
300
400
kVA
500
600
700
800
900
1000
1100
1200
1300
LSA 49.3 M8
%
97,0
96,2
96,2
96,1
95,7
96,0
95,0
95,0
94,8
94,0
94,7
93,2
94,5
93,0
92,6
92,0
100
200
300
kVA
400
500
600
700
800
900
1000
1100
1200
Reactances (%). Time constants (ms) - Class H / 480 V
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 30% trans.)
Transient ∆U (on-load 4/4) - P.F.: 0.8 LAG
No-load losses
Heat dissipation
1300
96,1
95,0
94,2
900
96,6
96,0
95,0
800
LSA 49.3 L10
97,0
97,0
92,0
95,1
92,9
%
%
95,0
95,2
93,0
91,9
100
95,3
94,9
94,0
96,5
95,7
95,0
94,0
91,0
96,5
96,4
96,0
95,0
91,0
LSA 49.3 L9
%
97,0
S4
0.35
365
219
2002
18.2
100
14.5
10
17.0
0.67
15.8
15
M6
0.40
307
184
2074
14.8
100
11.8
10
13.4
0.46
12.6
15
M8
0.32
362
217
2094
17.3
100
13.8
10
15.5
0.78
14.7
15
L9
0.45
317
190
2138
14.8
100
11.8
10
13.0
0.87
12.4
15
L10
0.36
363
217
2153
16.8
100
13.4
10
14.7
0.96
14.1
15
1.1
4.3
67
500
1616
13
12720
40028
1
4.2
65
500
1747
11
15710
43671
1
3.8
60
500
2071
12
14270
45867
1
3.8
58
500
2646
11
16873
45528
1
3.9
59
500
2646
12
15726
49172
Electric Power Generation
1400
Low Voltage Alternators - 4 pole
LSA 49.3 - 660 to 1000 kVA - 50 Hz / 825 to 1250 kVA - 60 Hz
Transient voltage variation 480V - 60 Hz
AREP or PMG system
Load application
20%
S4
M6
Voltage drop
15%
M8
L9
L10
10%
5%
0%
0
100
200
300
400
500
600
700
800
900 1000 1100 1200 1300
kVA at 0.8 P.F.
Load rejection
S4
20%
M6
M8
Voltage rise
15%
L9
L10
10%
5%
0%
0
100
200
300
400
500
600
700
800
900 1000 1100 1200 1300
kVA at 0.8 P.F.
Motor starting
S4
30%
M6
M8
L9
L10
Voltage drop
25%
20%
15%
10%
5%
0%
0
250
500
750
1000 1250 1500 1750 2000 2250 2500 2750 3000
Locked rotor kVA at 0.6 P.F.
1) For a starting P.F. other than 0.6, the starting kVA must be multiplied by K = Sine P.F. / 0.8
2) For voltages other than 480V (Y), 277V (D), 240V (YY) at 60 Hz, then kVA must be multiplied by (480/U)2 or (277/U)2 or (240/U)2.
Electric Power Generation
7
Low Voltage Alternators - 4 pole
LSA 49.3 - 660 to 1000 kVA - 50 Hz / 825 to 1250 kVA - 60 Hz
3-phase short-circuit curves at no load and rated speed (star connection Y)
LSA 49.3 S4
Symmetrical
Current (A)
Asymmetrical
Time (ms)
LSA 49.3 M6
Symmetrical
Current (A)
Asymmetrical
Time (ms)
LSA 49.3 M8
Symmetrical
Current (A)
Asymmetrical
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 49.3 - 660 to 1000 kVA - 50 Hz / 825 to 1250 kVA - 60 Hz
3-phase short-circuit curves at no load and rated speed (star connection Y)
LSA 49.3 L9
Symmetrical
Current (A)
Asymmetrical
Time (ms)
LSA 49.3 L10
Symmetrical
Current (A)
Asymmetrical
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 49.3 - 660 to 1000 kVA - 50 Hz / 825 to 1250 kVA - 60 Hz
Single bearing dimensions
L
Xg
AH
105
LB
620
55.5
228.5
10
Access to regulator
Cable output
259
C
Dimensions (mm) and weight
Type
L without PMG
LSA 49.3 S4
LSA 49.3 M6
LSA 49.3 M8
LSA 49.3 L9
LSA 49.3 L10
90
608
1008
Ø 235
S DIA. Qty 12
as shown on Ø M
0
400 - 1
- 0.050
PMG optional
AIR OUTLET
6
Flange (mm)
S.A.E.
620
ß°
Cable output
Ø BX - 0.100
Y DIA, Qty X
Eq. Sp. on Ø U.
336.5
12
ØP
0
Ø N - 0.127
6
Access to terminals
110
10 AIR INLET
Access to rotating
diodes
35
686
786
LB
C
Xg
Weight (kg)
Coupling
Flex plate
14
1267
1241
560
328.5
1427
Flange S.A.E 1
X
1357
1331
650
629
1574
Flange S.A.E 1/2
X
1357
1331
650
636
1635
Flange S.A.E 0
X
1446
1421
650
673
1788
Flange S.A.E 00
1446
1421
650
681
1837
Flex plate (mm)
S.A.E.
BX
18
X
X
P
N
M
W
ß°
U
X
Y
AH
1
773
511.175
530.225
7
15°
14
466.7
438.15
8
14
25.4
1/2
773
584.2
619.125
6
15°
18
571.5
542.92
6
17
15.7
0
773
647.7
679.45
7
11° 15’
00
773
787.4
850.9
6
11°15’
Torsional analysis data
Ø 140
Ø 115
Ø 90
Lr
Ø 145
Ø 149
Ø 145
Ø 145
Ø 135
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. 14
Flange S.A.E. 18
Xr
Lr
M
J
Xr
Lr
M
Type
LSA 49.3 S4
LSA 49.3 M6
LSA 49.3 M8
LSA 49.3 L9
LSA 49.3 L10
579
1255
535
620
1345
628
1345
666
1435
676
1435
J
8.39
567
1255
535
8.65
596
9.49
604
1345
598
9.75
622
10.04
612
1345
624
10.30
678
11
654
1435
680
11.27
695
11.36
662
1435
697
11.62
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.
The torsional analysis of the transmission is imperative. All values are available upon request.
10
Electric Power Generation
Low Voltage Alternators - 4 pole
LSA 49.3 - 660 to 1000 kVA - 50 Hz / 825 to 1250 kVA - 60 Hz
Two bearing dimensions
L
Xg
165
105
LB
620
55.5
240.5
Access to terminals
620
11°15’
Cable output
Access to regulator
10
AIR OUTLET
6
C
50
500
Dimensions (mm) and weight
Type
AIR INLET
2 x 2 holes Ø 35
608
1008
0
400 - 1
27
100
Access to
rotating diodes
L without PMG
16
M12 DIA. Qty 12
as shown on
Ø 679.45
336.5
50
LSA 49.3 S4
LSA 49.3 M6
LSA 49.3 M8
LSA 49.3 L9
LSA 49.3 L10
106
27
Ø 235
- 0.013
PMG optional
Ø 100 - 0.035
0
Ø 647 - 0.127
Ø 773
Cable output
686
786
LB
Xg
Weight (kg)
1378
1213
596
1483
1468
1303
636
1616
1468
1303
643
1677
1558
1393
682
1829
1558
1393
688
1878
Torsional analysis data
Ø 115
Ø 90
Ø 140
Ø 145
Lr
Ø 149
Ø 145
Ø 145
Ø 135
Ø 125
Ø 110
Ø 100
Xr
Centre of gravity: Xr (mm), Rotor length: Lr (mm), Weight: M (kg), Moment of inertia: J (kgm2): (4J = MD2)
Type
LSA 49.3 S4
LSA 49.3 M6
LSA 49.3 M8
LSA 49.3 L9
LSA 49.3 L10
Xr
538
578
585
621
629
Lr
1409
1499
1499
1589
1589
M
506
568
594
650
667
J
7.96
9.07
9.62
10.58
10.94
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.
The torsional analysis of the transmission is imperative. All values are available upon request.
Electric Power Generation
11
www.emersonindustrial.com
www.leroy-somer.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.
5279 en - 2015.07 / b