7
InstallatIon and maIntenance
LSA 42.2 - 2 & 4 POLE
ALTERNATORS
3433 en - 2010.10 / g
LEROY-SOMER
3.2.2 - Physical and visual checks
Before starting the machine for the first time, check that:
- the fixing bolts on the feet are tight
- the cooling air is drawn in freely
- the protective louvres and housing are correctly in place
- the standard direction of rotation is clockwise as seen from
the shaft end (phase rotation in order 1 - 2 - 3). For anti-
clockwise rotation, swap 2 and 3.
- the winding connection corresponds to the site operating
voltage (see section § 3.3).
3.3 - Terminal connection diagrams
To modify the connection, change the position of the terminal
cables. The winding code is specified on the nameplate.
Any intervention on the alternator terminals during
reconnection or checks should be performed with
the machine stopped.
Connection codes
L.L voltage
Factory connection
L1(U)
N
L3(W)
T1
T7
T12
T10
T4
T9
T3
T6
T11
T5
T2
T8
L2(V)
A
3 phase
3 phase
Winding
60 Hz
50 Hz
190 - 208
190 - 240
220 - 230
-
-
190 - 208
6
7
8
N
T1
T7
T12
T10
T4
T9
T3
T6
T11
T5
T2
T8
L1(U)
L3(W)
L2(V)
D
F
L1(U)
M
L3(W)
T1
T7
T12
T10
T4
T9
T3
T6
T11
T5
T2
T8
L2(V)
Voltage LM = 1/2 voltage LL
R 250 voltage detection :
0 => (T8) / 110 V => (T11)
R 438 voltage detection :
0 => (T3) / 220 V => (T2)
N
L1(U)
L2(V)
L3(W)
NDE
T9
T8
T7
T12
T10
T11
T4
T3
T2
T1
T5
T6
Winding
60 Hz
50 Hz
380 - 415
380 - 480
440 - 460
-
-
380 - 416
6
7
8
R 250 voltage detection :
0 => (T8) / 110 V => (T11)
R 438 voltage detection :
0 => (T3) / 380 V => (T2)
NDE
N
L1(U)
L2(V)
L3(W)
L1(U)
L2(V)
L3(W)
T9
T8
T7
T12
T10
T11
T4
T3
T2
T1
T5
T6
1 phase
1 phase
or
3 phase
FF
Winding
60 Hz
50 Hz
220 - 240
220 - 240
220 - 240
200
250 - 260
-
6
7
8
R 250 voltage detection :
0 => (T1) / 110 V => (T4)
R 438 voltage detection :
0 => (T10) / 220 V => (T1)
NDE
M
L
L
L
L
T9
T8
T7
T12
T10
T11
T4
T3
T2
T1
T5
T6
Winding
60 Hz
50 Hz
220 - 240
220 - 240
220 - 240
200
250 - 260
-
6
7
8
NDE
T9
T8
T7
T12
T10
T11
T4
T3
T2
T1
T5
T6
L
L
L
T1
T7
T12
T10
T4
T9
T3
T6
T11
T5
T2
T8
L
M
Voltage LM = 1/2 voltage LL
R 250 voltage detection :
0 => (T8) / 110 V => (T11)
R 438 voltage detection :
0 => (T3) / 220 V => (T2)
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Страница 191: ...July 2009 Pub No 99610 29120 OPERATION MAINTENANCE MANUAL 189 242 ...
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