Multiquip DCA70SSIU - Manual (Page 18)

PAGE 18 — DCA70SSIU 50 HZ GENERATOR • OPERATION AND PARTS MANUAL — REV. #1 (01/06/09)
GENERATOR CONTROL PANEL
Generator Control Panel Figure 4.
The defi nitions below describe the controls and functions
of the DCA70SSIU Generator Control Panel (Figure 4).
AC Voltmeter 1. — Indicates the output voltage present
at the U,V, and W Output Terminal Lugs.
AC Ammeter 2. — Indicates the amount of current the
load is drawing from the generator per leg selected by
the ammeter phase-selector switch.
Frequency Meter 3. — Indicates the output frequency
in hertz (Hz). Normally 50 Hz.
Voltage Regulator Control 4. — Allows ±15% manual
adjustment of the generator’s output voltage.
Main Circuit Breaker 5. —This three-pole, 175A main
breaker is provided to protect the the U,V, and W Output
Terminal Lugs from overload.
Ammeter Change-Over Switch 6. — This switch allows
the AC ammeter to indicate the current fl owing 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.
Voltmeter Change-Over Switch 7. — 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.
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

Automatic Voltage Regulator (AVR)

Starter Relay 
Current Transformer 
Voltage Selector Switch

Main Circuit Breaker 
NOTICE
Remember the overcurrent relay monitors the current
fl owing from the U,V, and W Output Terminal Lugs
to the load.
In the event of a short circuit or over current condition,
it will automatically trip the 175 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).