TP-6881 7/15 83Section 5 Component Testing and Adjustment
5.8 Voltage Connections
Single-phase generator sets are available from the
factory connected for 120/240 volt 60 Hz. See
Figure 5-10 for the factory connections. The generator
sets covered in this document are not reconnectable.
4321
Stator Leads
LO
GRD
L2
L1
LO (Neutral)
Line
Side
Factory two-pole
circuit breaker
Ground
Load
Side
TP-5867
L0-L1
L0-L2
L1-L2
60 Hz
120 volt
120 volt
240 volt
Figure 5-10 120/240 Volt, 3-Wire Configurations
5.9 Voltage Adjustments
Hazardous voltage.
Can cause severe injury or death.
Operate the generator set only when
all guards and electrical enclosures
areinplace.
Moving parts.
WARNING
Testing live electrical circuits. Hazardous voltage or
current can cause severe injury or death. Have trained and
qualified personnel take diagnostic measurements of live
circuits. Use adequately rated test equipment with electrically
insulated probes and follow the instructions of the test
equipment manufacturer when performing voltage tests.
Observe the following precautions when performing voltage
tests: (1) Remove all jewelry. (2) Stand on a dry, approved
electrically insulated mat. (3) Do not touch the enclosure or
components inside the enclosure. (4) Be prepared for the
system to operate automatically.
(600 volts and under)
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 adjustments or
repairs. Remove all jewelry before servicing the equipment.
Note: See Section 3.7 for voltage calibration
instructions.
Voltage Adjustments Using SiteTech
The SiteTech parameters used to adjust the voltage are
shown in Figure 5-11.
SiteTech Group Parameter
Genset System Configuration Genset System Voltage
Voltage Regulator Average Voltage Adjustment
Volts per Hertz Slope
Volts per Hertz Cut-in
Frequency
Voltage Regulator Gain
Figure 5-11 SiteTech Parameters for Voltage
1
1. Voltage regulator parameter group
Figure 5-12 Voltage Regulator Parameter Group in
SiteTech