Multiquip DCA125SSIU manual Generator Control Panel, Notice

GENERATOR CONTROL PANEL

5

2

INCREASEDECREASE

1 3

V

U W

OFF

V-W

U-V W-U

OFF

4

HZ

A 6

V

7

AUTO MANUAL

OFF/RESET

LOW OIL PRESSURE

HIGH COOLANT TEMPERATURE

OVERCRANK

OVERSPEED

ENGINE RUNNING

MOOOOO-20001Q

Figure 4. Generator Control Panel

The defi nitions below describe the controls and functions of the DCA125SSIU Generator Control Panel (Figure 4).

1.Main Circuit Breaker—This three-pole, 300A main breaker is provided to protect the the U,V, and W Output Terminal Lugs from overload.

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 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.

4.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.

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

6.AC Ammeter — Indicates the amount of current the load is drawing from the generator per leg selected by the ammeter phase-selector switch.

7.AC Voltmeter — Indicates the output voltage present at the U,V, and W Output Terminal Lugs.

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

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 300 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).

PAGE 18 — DCA125SSIU 50 HZ GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (12/22/08)