Mechanical Checks; Terminal Connection Diagrams - Leroy Somer LSA 49.1 4P Manuel D'utilisation Et D'entretien

LEROY-SOMER

3.2.2 - Mechanical checks

Before starting the machine for the first time, check that :
- all fixing bolts and screws are tight
- cooling air is drawn in freely
- the protective grilles 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)
Connection code
Ph1-L1
D
T1-U1
Star
3 PH
T4-U2
T6-W2 T5-V2
T3-W1
Ph3-L3
C
Ph1-L1
Delta T6 -W2 T1-U1
3 PH
T3-W1
T5-V2 T2-V1
Ph3-L3
Optional 6-wire terminal box with connector links for mounting protection and (or) measurement C.Ts.
Ph1-L1
D
T1-U1
Star
3 PH
T4-U2
T6-W2
T5-V2
T3-W1
Ph3-L3
C
Ph1-L1
Delta T6 -W2 T1-U1
3 PH
T3-W1
T5-V2 T2-V1
Ph3-L3
INSTALLATION AND MAINTENANCE
LSA 49.1 4P
ALTERNATORS
INSTALLATION
Voltage L.L
50 Hz
Winding
6
8
T2-V1
R 448 voltage sensing:
Ph2-L2
0 => (T3) / 380 V => (T2)
50 Hz
Winding
6
8
T4-U2
R 448 voltage sensing:
0 => (T3) / 220 V => (T2)
Ph2-L2
50 Hz
Winding
6
8
T2-V1
R 448 voltage sensing:
Ph2-L2
0 => (T3) / 380 V => (T2)
50 Hz
Winding
6
8
T4-U2
R 448 voltage sensing:
0 => (T3) / 220 V => (T2)
Ph2-L2

3.3 - Terminal connection diagrams

To modify the connection, change the position of the terminal
cables. The winding code is specified on the nameplate.
3.3.1 - Standard terminal connection : 6-wire
Any intervention on the alternator terminals during
reconnection or checks should be performed with the
machine stopped.
60 Hz
380
380
416
400
440
415
480
T5
380
400
416 T4
T6
60 Hz
220
220
240
230
255
240
220
230
240
60 Hz
380
380
416
400
440
415
480
380
400
416
60 Hz
220
220
240
230
255 T5
240
220
T4
230
240
T6
Ref. 3007 GB - 4.33/a - 10.00
Factory connection
T3
T2
T1
NDE
T5
T3
T4
T2
T6
T1
NDE
380
0
T5
T3
W(3)
T4 T2
V(2)
T1
T6
U(1)
NDE
220
0
T3
W(3)
T2
V(2)
T1
U(1)
NDE
N
L3(W)
L2(V)
L1(U)
L3(W)
L2(V)
L1(U)
N
L3
L2
L1
L3
L2
L1
9