Terminal Connection Diagrams - SDMO R 340 U User And Maintenance Manual

LEROY-SOMER
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.
WARNING
Ensure that the alternator has the
degree of protection matching the
defined environmental conditions
3.2.2 - Mechanical checks
Before starting the machine for the first time,
check that:
- all fixing bolts and screws are tight.
- the cooling air is drawn in freely.
- the protective grilles and housing are cor-
rectly in place.
Connection codes
L1(U)
A
T1
T7
3-phase
T4 T10
T12
T9
T11
T6
L3(W)
T3
L1(U)
T1
D
3-phase
T4
T7
T10
T12
T9
T11
T8
T3 T6
L3(W)
In case of reconnection, ensure that AVR voltage detection is correct !
The factory can supply a set of flexible shunts and special connection links as an option for making these connections. (*).
Installation and maintenance
LSA 46.2 - 4 POLES
ALTERNATORS
Winding
6
7
N
8
T5
R 250 voltage detection :
T2
0 => (T8) / 110 V => (T11)
R 450 voltage detection :
L2(V)
0 => (T3) / 220 V => (T2)
T8
Winding
6
7
N
8
T5
T2
L2(V)
9
Winding 9 : R 450 voltage detection + transformer (See specific diagram AREP or SHUNT)
- 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.
3.3.1 - Terminal connection: 12 wire
The connection accessories are detailed in
section 5.3.3.
.
Any intervention on the alternator
terminals during reconnection or checks
should be performed with the machine
stopped.
Voltage L.L
50 Hz 60 Hz
190 - 208 190 - 240
-
220
-
190 - 208
50 Hz 60 Hz
380 - 415 380 - 480
-
440
-
380 - 416
R 250 voltage detection :
0 => (T8) / 110 V => (T11)
R 450 voltage detection :
0 => (T3) / 380 V => (T2)
500 600
219/285
3856 en - 2011.01/ h
Factory connection
T3
T12
T9
T6
T2
T11
T8
T5
T1
T10
T7
T4
N
NDE
T3
T12
T9
T6
T2
T11
T5 T8
T1
T10
T4 T7
NDE
L3(W)
L2(V)
L1(U)
L3(W)
L2(V)
L1(U)
N
7