Generator Control Panel

Figure 4. Generator Control Panel

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

1.Main Circuit Breaker—This three-pole, 350A 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 350 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 — DCA125USI 60 HZ GENERATOR • OPERATION AND PARTS MANUAL — REV. #1 (03/25/11)

DCA125USI specifications

The Multiquip DCA125USI is a high-performance portable diesel generator renowned for its reliability, efficiency, and robust construction, making it an ideal choice for construction sites, events, and remote locations requiring continuous power. Engineered for durability, this generator features a solid and compact design that allows seamless transport while providing ample power to meet demanding applications.

One of the standout features of the DCA125USI is its powerful 125 kVA output, capable of supplying electricity to a wide range of equipment simultaneously. With a fuel-efficient Tier 4 compliant engine, this generator not only delivers high performance but also addresses environmental concerns through reduced emissions. Operating at low noise levels, the DCA125USI ensures a quieter work environment, making it suitable for urban areas and noise-sensitive locations.

In terms of technology, the DCA125USI is equipped with a state-of-the-art digital control panel that offers advanced monitoring capabilities, allowing users to easily track the generator's performance, fuel consumption, and overall health. This user-friendly interface simplifies operation and enhances the overall experience for users, whether they are seasoned professionals or first-time operators. Additionally, the generator is fitted with automatic voltage regulation (AVR), which provides stable power output, protecting connected equipment from voltage fluctuations.

Safety is a priority with the Multiquip DCA125USI, as evidenced by its comprehensive set of protection features, including low oil pressure shutdown, high-temperature shutdown, and overload protection. These safety mechanisms ensure the longevity of the engine and the generator's components while safeguarding connected equipment against potential damage.

Another notable characteristic is its large fuel tank, which allows for extended run times, reducing the need for frequent refueling. This feature is particularly beneficial in situations where access to fuel is limited or where continuous operation is critical.

In conclusion, the Multiquip DCA125USI is a versatile and dependable portable diesel generator, catering to a wide variety of applications. Its combination of high output, advanced technology, and robust safety features make it an excellent investment for contractors, event organizers, and anyone in need of reliable power in challenging environments. With this generator, users can have peace of mind knowing they have a powerful energy solution at their disposal.