Ingersoll-Rand G 270, Users Manual And Maintenance Manual

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11
INSTALLATION AND MAINTENANCE
LSA 46.2 / 47.1
ALTERNATORS
INSTALLATION
Ref. 2981 GB - 4.33/a - 04.00
LEROY-SOMER
3.3.3 - Option connection diagram
3.3.4 - Connection checks
Electrical installations must comply with the current
legislation 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 connection diagram.
- Check that the frequency selection strap “ST3” is on the
correct frequency setting.
- Check whether strap ST4 or the remote adjustment
potentiometer have been connected.
- Optional operating modes
• Strap ST1 : cut to connect the R 731 3-phase detection
module.
• Strap ST2 : cut for rapid response time
• Strap ST5 : cut to suppress the LAM function.
R 791 T interference suppression kit
(standard for CE marking)
LSA 46.2 - 6-wire
Current transformer connection (optional)
Remote voltage potentiometer
Black
Black
Black
Blue
White
Connections
A D F B F/F
T1 T1 T1 T1 T1
T2 T2 T2 T2 T9
T3 T3 T3 T3 T3
N N
Voltage adjustment
via remote potentiometer
.
ST4
Neutral
link
- PH 1
In - Secondary 1 A
Coupling D
P1
P2
T4
Neutral
link
Neutral
link
LSA 47.1 - 6-wire
- PH 1
In/2 (coupl. D) - Secondary 1 A In/2 - Secondary 1 A
Coupling D
LSA 47.1 - 12-wire
P1
P2
T4
C10
Neutral
link
Coupling D & A Coupling D & A
LSA 46.2 - 12-wire
P1
P2
T10
In - Secondary 1A (coupl. D)
P1
P2
T10
C10