1dca-220ssj/ssju — generator control panel – Multiquip MQ Power Whisperwatt 50 Hz Generator DCA-220SSJ User Manual

Page 37

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DCA-220SSJ/SSJU— OPERATION AND PARTS MANUAL — REV. #1 (01/06/09) — PAGE 37

1

DCA-220SSJ/SSJU — GENERATOR CONTROL PANEL

The definitions below describe the controls and functions of
the DCA-220SSJ/SSJU

Generator Control Panel (Figure 7).

1.

Frequency Meter – Indicates the output frequency in
hertz (Hz). Normally 50 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.

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.

Voltage Regulator Control – Allows ±15% manual
adjustment of the generator’s output voltage.

5.

AC Voltmeter – Indicates the output voltage present at
the

U,V, and W Output Terminal Lugs.

6.

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.

7.

Main Circuit Breaker – This three-pole, 600A main
breaker is provided to protect the the

U,V, and W Output

Terminal Lugs from overload.

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

Three Phase Circuit Breaker

Figure 7. Generator Control Panel

Remember the

overcurrent

relay monitors the current
flowing 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 600 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).

NOTE

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