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PAGE 20 — DCA-25USIXF/DCA-25USI2XF — OPERATION AND PARTS MANUAL — REV. #8 (05/08/09)
DCA-25USIXF/DCA-25USI2XF— GENERATOR CONTROL PANEL
The definitions below describe the controls and functions of
the "
Generator Control Panel
" (Figure 6).
1. Frequency Meter – Indicates the output frequency in
hertz (Hz). Normally 60 Hz ±1 Hz.
2. Voltage Regulator Control – Allows ±15% manual
adjustment of the generator’s output voltage.
3. Ammeter Change-Over Switch – This switch allows
the AC ammeter to indicate the current flowing to the
load connected to any phase of the output terminals, or
to be switched off. This switch does not effect the
generator output in any fashion, it is for current reading
only.
4. Main Circuit Breaker – This three-pole, 60 amp main
breaker is provided to protect the UVWO output
terminals from overload.
5. Voltmeter Change-Over Switch – This switch allows
the AC voltmeter to indicate phase to phase voltage
between any two phases of the output terminals or to
be switched off.
6. AC Voltmeter – Indicates the output voltage present
at the UVWO terminals.
7. AC Ammeter – Indicates the amount of current the
load is drawing from the generator per leg selected by
the ammeter phase-selector switch.
Located behind the generator control panel is the
Generator
Control Box
. This box contains some of the necessary
electronic components required to make the genertator
function.
The “Control Box” is equipped with the following major
components:
Over-Current Relay
Voltage Rectifer
Starter Relay
Three Pole Circuit Breaker
Current Transformer
Voltage Selector Switch
Remember the
overcurrent relay
monitors the current flowing from
the UWVO output terminals to the
load.
In the event of a short circuit or
over current condition, it will
automatically trip the main 60
amp breaker.
NOTE
To restore power to the UWVO output terminals, press the
reset
button on the overcurrent relay and place the
main
circuit breaker in the
closed
position (ON).
Figure 6. Generator Control Panel