Leroy-Somer LSA 43.2, Installation And Maintenance Manual

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7
LEROY-SOMER
2013.01 / k
Installation and maintenance
LSA 43.2/44.2 - 4 POLES
ALTERNATORS
3434 en -
L1(U)
N
L3(W)
T1 T7
T12
T10 T4
T9
T3
T6
T11
T5
T2
T8
L2(V)
A
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
N
L1(U)
L2(V)
L3(W) T9
T8
T7
T12
T10
T11
T4
T3
T2
T1
T5
T6
60 Hz 50 Hz
380 - 415 380 - 480
440 - 460
-
-
380 - 416
6
7
8
N
L1(U)
L2(V)
L3(W) T9
T8
T7
T12
T10
T11
T4
T3
T2
T1
T5
T6
Connection codes L.L. voltage
R 250 voltage sensing:
0 => (T8) / 110 V => (T11)
R 438 voltage sensing:
0 => (T3) / 110 V => (T2)
R 250 voltage sensing:
0 => (T8) / 110 V => (T11)
R 438 voltage sensing:
0 => (T3) / 380 V => (T2)
Winding
Winding
3 phases
3 phases
Factory connection
NDE
NDE
There are 2 possible methods for restoring
the above minimum values.
a) Dry out the machine for 24 hours in a
drying oven at a temperature of 110 °C
(without the regulator).
b) Blow hot air into the air intake, having
made sure that the machine is rotating with
the exciter field disconnected.
Note : Prolonged standstill
In order to avoid these problems, we
recommend the use of space heaters, as
well as turning over the machine from time
to time. Space heaters are only really
effective if they are working continuously
while the machine is stopped.
Ensure that the alternator has the
degree of protection matching the
defined environmental conditions
.
• Mechanical checks
Before starting the machine for the first time,
check that:
- all fixing bolts and screws are tight,
WARNING
- the cooling air is drawn in freely,
- the protective grilles and housing are cor-
rectly in place,
- the standard direction of rotation is clock-
wise 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 stator cables on the terminals.
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.