TP-6200 10/12 161Section5 Generator Set Reconnection
Section 5 Generator Set Reconnection5.1 Introduction
Use the following voltage reconnection procedure to
change the voltage of 10- and 12-lead generator sets.
Frequency changes require voltage regulator and
governor adjustments. Refer to the respective spec
sheet to determine if frequency is fixed or field-
convertible. If frequency is adjustable, refer to the
engine service manual and/or governor literature for
conversion information.
Refer to the following procedure and the connection
schematics. Follow the safety precautions at the front of
this manual and in the procedure text and observe
National Electrical Code (NEC) guidelines.
NOTICE
Voltagereconnection. Affix a notice to the generator set
after reconnecting the set to a voltage different from the
voltage on the nameplate. Order voltage reconnection
decal 246242 from an authorized service distributor/
dealer.
Note: Equipment damage. Verify that the voltage
ratingsof the transfer switch, line circuit breakers,
and other accessories match the selected line
voltage.
Accidental starting.
Can cause severe injury or death.
Disconnectthe battery cables before
working on the generator set.
Remove the negative (--) lead first
when disconnecting the battery.
Reconnect the negative (--)lead last
when reconnecting the battery.
WARNING
Disabling the generator set. Accidental starting can
cause severe injury or death. Before working on the
generator set or equipment connected to the set, disable the
generator set as follows: (1) Turn the generator set master
switch and switchgear engine control switch to the OFF
position. (2) Disconnect the power to the battery charger.
(3) Remove the battery cables, negative (--) lead first.
Reconnect the negative (--)lead last when reconnecting the
battery. Follow these precautions to prevent the starting of the
generator set by an automatic transfer switch or a remote
start/stop switch.
Disabling the generator set. Accidental starting can
cause severe injury or death. Before working on the
generator set or connected equipment, disable the generator
setas follows: (1) Move the generator set master switch to the
OFF position. (2) Disconnect the power to the battery
charger. (3)Remove the battery cables, negative (--) lead
first. Reconnect the negative (--) lead last when reconnecting
thebattery. Follow these precautions to prevent starting of the
generator set by an automatic transfer switch, remote
start/stop switch, or engine start command from a remote
computer.
Hazardous voltage.
Can cause severe injury or death.
Operate the generator set only when
all guards and electrical enclosures
areinplace.
Moving parts.
WARNING
Grounding electrical equipment. Hazardous voltage can
cause severe injury or death. Electrocution is possible
whenever electricity is present. Ensure you comply with all
applicable codes and standards. Electrically ground the
generator set, transfer switch, and related equipment and
electrical circuits. Turn off the main circuit breakers of all
power sources before servicing the equipment. Never
contact electrical leads or appliances when standing in water
or on wet ground because these conditions increase therisk
of electrocution.
Short circuits. Hazardous voltage/current can cause
severeinjury or death. Short circuits can cause bodily injury
and/or equipment damage.Do not contact electrical
connectionswith tools or jewelry while making adjustments or
repairs. Remove all jewelry before servicing the equipment.