Generator Control Panel

INCREASEDECREASE

1 3

U W

OFF

V-W

U-V W-U

OFF

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 60 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 60 HZ GENERATOR • OPERATION AND PARTS MANUAL — REV. #3 (01/13/11)

DCA125SSIU specifications

The Multiquip DCA125SSIU is a robust and versatile diesel generator that is designed to meet the power needs of various applications, from construction sites to events and emergency situations. With a power output of 125 kVA, this generator combines efficiency and reliability, making it an ideal choice for professionals who demand optimal performance in challenging environments.

One of the primary features of the DCA125SSIU is its industrial-grade a diesel engine. This engine not only delivers impressive power but also emphasizes fuel efficiency. The generator is equipped with advanced fuel management technologies that help minimize consumption while maximizing output, making it cost-effective for long-term use.

In terms of durability, the DCA125SSIU is built with a sturdy enclosure that protects it from environmental factors. The weather-resistant design ensures that it operates effectively in a variety of weather conditions, ensuring reliable performance when needed the most. Additionally, its compact size allows for easy transport and storage, which is particularly beneficial for contractors and rental companies.

The DCA125SSIU features a user-friendly control panel that provides essential information at a glance. This panel includes gauges for monitoring key parameters such as voltage, frequency, and hours of operation. It also has an automatic voltage regulator (AVR) that maintains consistent voltage output, safeguarding connected equipment from potential damage caused by power fluctuations.

Safety is a priority with the DCA125SSIU, as it is equipped with several emergency shutdown features. These include low oil pressure, high temperature, and overload protection, ensuring that the generator operates safely under all conditions. Further enhancing its operational reliability, the generator comes with a built-in fuel tank that allows for extended runtime, reducing the frequency of refueling during use.

In summary, the Multiquip DCA125SSIU is a powerful, durable, and efficient diesel generator that meets the diverse power needs of various industries. Its combination of a high-performance engine, user-friendly control panel, robust safety features, and fuel efficiency makes it an exceptional choice for anyone looking for a reliable power solution. Whether for temporary power during events, backup for critical systems, or support at construction sites, the DCA125SSIU is engineered to perform.