Commissioning; Settings - Leroy Somer LSA 49.1 4P Manuel D'utilisation Et D'entretien

LEROY-SOMER
3.3.3 - Option connection diagram
R 791 T interference suppression kit
(standard for CE marking)
Connections
A C
Black
T1 T1
Black
T2 T2
Black
T3 T3
Blue N
White
3.3.4 - Connection checks
Electrical installations must comply with the current
legislation in force in the country of use.
Check that :
- The residual circuit-breaker conforms to legislation on
protection of personnel, in force in the country of use, and has
been correctly installed on the alternator power output as
close as possible to the alternator. (In this case, disconnect
the wire of the interference suppression module linking the
neutral).
- Any protective devices in place have not been tripped.
- If there is an external AVR, the connections between the
alternator and the cubicle are made in accordance with the
connection diagram.
- There is no short-circuit between phase or phase-neutral
between the alternator output terminals and the generator set
control cabinet (part of the circuit not protected by
circuit-breakers or cubicle relays).
- The machine should be connected with the busbar
separating the terminals as shown in the terminal connection
diagram.
3.3.5 - Electrical checks on the AVR
- Check that all connections have been made properly as
shown in the attached wiring diagram.
- Check that the ST3 frequency selection jumper is on the
correct frequency setting.
- Check whether the ST4 jumper or the remote adjustment
potentiometer have been connected.
- Optional operating modes
• ST1 jumper : disconnected to connect the R 731 3-phase
sensing module.
• ST2 jumper : disconnected for rapid response time
• ST5 jumper : disconnected to suppress the LAM function.
• ST9 jumper : closed with AREP, open with PMG
INSTALLATION AND MAINTENANCE
LSA 49.1 4P
ALTERNATORS
INSTALLATION
External voltage
potentiometer
D F
Adjusting the voltage
T1 T1
via a remote
T2 T2
potentiometer
T3 T3
.
N
ST4
Connection of the optional current transformer
D connection
12-wire
In/2 (D conn.)
Secondary 1 A
T10
P2
P1
Neutral link

3.4 - Commissioning

The machine can only be started up and used if the
installation is in accordance with the regulations and
instructions defined in this manual.
The machine is tested and set at the factory. When first used
with no load, make sure that the drive speed is correct and
stable (see the nameplate). On application of the load, the
machine should achieve its rated speed and voltage;
however, in the event of abnormal operation, the machine
setting can be altered (follow the adjustment procedure in
section 3.5). If the machine still operates incorrectly, the
cause of the malfunction must be located (see section 4.4).

3.5 - Settings

The various adjustments during tests must be made by a
qualified engineer. Take care that the drive speed
specified on the nameplate is reached before
commencing adjustment. After operational testing,
replace all access panels or covers.
The AVR should be used to make any adjustments to the
machine.
Ref. 3007 GB - 4.33/a - 10.00
D connection
6-wire
In/4 (D conn.)
Secondary 1 A
T4
P2
P1
Neutral link
11