TP-5977 7/98 17
Generator Reconnection
Section 5. Wiring Diagrams
5.1 Voltage Reconnection
Procedure
The reconnection procedure explains voltage
reconnections only. If frequency changes are required,
the governor and voltage regulator need adjustment.
See the generator set service manual for information
regarding frequency adjustment.
The following pages provide information and
illustrations for reconnection of 4-lead and 12-lead
generator sets. In all cases, follow the National
Electrical Code (NEC) guidelines.
Reconnect the stator leads of the generator set if a
different output phase (12-lead models only) or voltage
is desired. Refer to the following procedure and the
connectionschematics. Follow all safety precautions at
the front of this manual and in the text while performing
this procedure.
NOTE
Order voltage reconnection decal 246242 from an
authorized service distributor/dealer and affix decal to
generator set after reconnecting to a voltage different
than the nameplate.
Accidental starting.
Can cause severe injury or death.
Disconnect battery cables before
working on generator set. (Remove
negative (--) lead first when
disconnecting battery. Reconnect
negative (--) lead last when
reconnecting battery.)
WARNING
Disabling generator set. Accidental starting can cause
severe injury or death. Before working on the generator set
or connected equipment, disable the generatorset asfollows:
1) Turn the generator set master switch to OFF position.
2) Disconnect power to battery charger. 3) Remove battery
cables (remove negative (--) lead first). Reconnect negative
(--) lead last when reconnecting battery. Follow these
precautions to prevent starting of generator set by an
automatic transfer switch or remote start/stop switch.
Hazardous voltage.
Movingrotor.
Can cause severe injury or death.
Operate generator set only with all
guards and electrical enclosures in
place.
WARNING
Grounding generator set. Hazardous voltage can cause
severe injury or death. Electrocution is possible whenever
electricity is present. Open main circuit breakers of all power
sources before servicing equipment. Configure the
installation to electrically ground the generator set and
electrical circuits when in use. Never contact electrical leads
or appliances when standing in water oron wet ground, asthe
chance of electrocution increases under such conditions.
Short circuits. Hazardous voltage/current can cause
severe injury or death. Short circuits can cause bodily injury
and/or equipment damage. Do not contact electrical
connections with tools or jewelry while making adjustmentsor
repairs. Remove wristwatch, rings, and jewelry before
servicing equipment.
5.1.1 Four-Lead (1-Phase)
Generator Sets
NOTE
Generator sets equipped with controllers with meters
have current transformers (CTs).
NOTE
Position current transformers CT1, CT2, and CT3 with
dot or HI side toward generator set.
See Figure 5-1 for four-lead reconnectable
(single-phase) generator set options.
To Next Page
Loading...
