Generator Control Panel - MULTIQUIP Power WHISPERWATT DCA-20SPX Operation And Parts Manual

The definitions below describe the controls and functions of
the DCA-20SPX Generator Control Panel (Figure 6).
1. Frequency Meter – Indicates the output frequency in
hertz (Hz). Normally 60 Hz.
2. AC Ammeter – Indicates the amount of current the load
is drawing from the generator per leg selected by the
ammeter phase-selector switch.
3. AC Voltmeter – Indicates the output voltage present at
the U,O, and V Output Terminal Lugs .
4. Voltage Regulator Control – Allows ±15% manual
adjustment of the generator's output voltage.
5. 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.
6. Main Circuit Breaker – This three-pole, 90A main
breaker is provided to protect the the U,O, and V Output
Terminal Lugs from overload.
DCA-20SPX— OPERATION AND PARTS MANUAL — REV. #2 (04/14/10) — PAGE 23
DCA-20SPX — GENERATOR CONTROL PANEL
4
INCREASE DECREASE
V
5
U W
OFF
6
Figure 6. Generator Control Panel
Located behind the generator control panel is the Generator
Control Box . This box contains some of the necessary
electronic components required to make the generator
function.
The Control Box is equipped with the following major
components:
■ ■ ■ ■ ■
Over-Current Relay
■ ■ ■ ■ ■
Voltage Rectifer (AVR)
■ ■ ■ ■ ■
Starter Relay
■ ■ ■ ■ ■
Current Transformer
■ ■ ■ ■ ■
Voltage Selector Switch
■ ■ ■ ■ ■
Single Phase Circuit Breaker
In the event of a short circuit or over current condition, it will
automatically trip the 90 amp main breaker.
To restore power to the Output Terminal Panel , press the
reset button on the overcurrent relay and place the main
circuit breaker in the closed position (ON).
1
HZ
2
A
3
V
Remember the overcurrent
relay monitors the current
NOTE
flowing from the U,O and V
Output Terminal Lugs to the
load.
1