7
2020.05 / c
Electric Power Generation
Installation and maintenance
LSAH 44.3
Low Voltage Alternator - 4 pole
5577 en -
WARNING
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:
- top up the cooling circuit with water before
starting the machine,
- all fixing bolts are tight, and that there are
no leaks on the water inlet and outlet,
- the length of bolt and the tightening torque
are correct,
- the protective grille and housing are cor-
rectly in place,
- the standard direction of rotation is clock-
wise as seen from the drive 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).
WARNING
At the first start-up or after an extended
shutdown, allow the machine to be
purged: bleeder [69].
3.3 - Terminal connection diagrams
The winding code is specified on the
nameplate.
Any intervention on the alternator
terminals during checks should be
performed with the machine stopped.
In no case should the internal
connections in the terminal box be
subjected to stresses due to cables
connected by the user.
N
T1
T4
T3
T6
T5
T2
L1(U)
L3(W)
L2(V)
D
60 Hz
50 Hz
380 - 415
380 - 480
6
N
L1(U) L2(V) L3(W)
T4
T3
T2
T1
T5
T6
Connection codes
L.L. voltage
D350 voltage sensing:
1-phase: V - W
3-phase: U - V - W
Winding
Factory connection 6-wire
NDE
3-phase
Ph1
Ph2
Ph3
103
104
130°C
blue wire
150°C
black wire
180°C
red/white wire
PTC stator sensors
