50 Hz: G625 - G690 - G750XW/XF
OPERATION & MAINTENANCE MANUAL
72
60 Hz: G655 - G750 - G800 - G850XW/XF
Connection checks
WARNING
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 protection devices in place have not been tripped.
- If there is an external AVR, the connections between
the alternator and the cabinet are made in accordance
with the connection diagram.
- There is no short-circuit phase-phase or phase-neutral
between the alternator output terminals and the
generator set control cabinet (part of the circuit not
protected by circuitbreakers or relays in the cabinet).
- The machine should be connected with the busbar
separating the terminals as shown in the terminal
connection diagram.
- The alternator earth terminal inside the terminal box is
connected to the electrical earth circuit.
- The earth terminal (ref 28) is connected to the frame.
The connections inside the terminal box must never be
subjected to stress due to cables connected by the user.
COMMISSIONING
WARNING
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 up at the factory. When
first used with no load, make sure that the drive speed is
correct and stable (see the nameplate). With the
regreasable bearing option, we recommend greasing the
bearings at the time of commissioning (See later in this
manual).
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 later in this manual). If
the machine still operates incorrectly, the cause of the
malfunction must be located (See later in this manual).
SETTING UP
The various adjustments during tests must be made
by a qualified engineer.
Ensure that the drive speed specified on the
nameplate
is
reached
before
commencing
adjustment.
After operational testing, replace all access panels or
covers.
The AVR is used to make any adjustments to the
machine.
