Multiquip dca25USI2 manual General Information

Models: dca25USI2

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General Information

Generator

This MQ Power generator (Figure 3) is a high quality portable (requires a trailer for transport) power source for telecom sites, lighting facilities, power tools, submersible pumps and other industrial and construction machinery.

Engine Operating Panel

The “Engine Operating Panel” is provided with the following: „„Tachometer

„„Water Temperature Gauge

„„Warning Lamp

„„Pre-Heat Lamp

„„Oil Pressure Gauge

„„Charging Ammeter Gauge

„„Fuel Level Gauge

„„Panel Light/Panel Light Switch

„„Oil Pressure Alarm Lamp

„„Water Temperature Alarm Lamp

„„Fuel Filter Water Level Alarm Lamp

„„Fuel Leak Detected Alarm Lamp

Generator Control Panel

The “Generator Control Panel” is provided with the following: „„Frequency Meter (Hz)

„„AC Ammeter (Amps)

„„AC Voltmeter (Volts)

„„Ammeter Change-Over Switch

„„Voltmeter Change-Over Switch „„Voltage Regulator

„„3-Pole, 6 amp Main Circuit Breaker

„„“Control Box” (located behind the Gen. Control Panel)

Automatic Voltage Regulator

Current Transformer

Over-Current Relay

Starter Relay

Voltage Selector Switch

Output Terminal Panel

The “Output Terminal Panel” is provided with the following: „„Three 120/240V output receptacles (CS-6369), 50A „„Three auxiliary circuit breakers, 50A

„„Two 120V output receptacles (GFCI), 20A

„„Two GFCI circuit breakers, 20A

„„Five output terminal lugs (3Ø power)

Open Delta Excitation System

This generator is equipped with the state of the art “Open- Delta” excitation system. The open delta system consist of an electrically independent winding wound among stationary windings of the AC output section.

There are four connections of the open delta A, B, C and D. During steady state loads, the power from the voltage regulator is supplied from the parallel connections of A to B, A to D, and C to D. These three phases of the voltage input to the voltage regulator are then rectified and are the excitation current for the exciter section.

When a heavy load, such as a motor starting or a short circuit occurs, the automatic voltage regulator (AVR) switches the configuration of the open delta to the series connection of B to C. This has the effect of adding the voltages of each phase to provide higher excitation to the exciter section and thus better voltage response during the application of heavy loads.

The connections of the AVR to the AC output windings are for sensing only. No power is required from these windings.

The open-delta design provides virtually unlimited excitation current, offering maximum motor starting capabilities. The excitation does not have a “fixed ceiling” and responds according the demands of the required load.

Engine

This generator unit incorporates an ISUZU BV-4LE2 diesel engine.This engine is designed to meet every performance requirement for the generator. Reference Table 2 for engine specifications.

In keeping with MQ Power’s policy of constantly improving its products, the specifications quoted herein are subject to change without prior notice.

Electric Governor System

The electric governor system controls the RPMs of the engine. When the engine demand increases or decreases, the governor system regulates the frequency variation to ±.25%.

Extension Cables

When electric power is to be provided to various tools or loads at some distance from the generator, extension cords are normally used. Cables should be sized to allow for distance in length and amperage so that the voltage drop between the generator and point of use (load) is held to a minimum. Use the cable selection chart (Table 6) as a guide for selecting proper extension cable size.

page 16 — DCA25Usi2 60 hz Generator • operation and parts manual — rev. #0 (02/14/14)

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Multiquip dca25USI2 manual General Information

dca25USI2 specifications

The Multiquip DCA25USI2 is a powerful and versatile portable generator designed for a range of applications in construction, events, and emergency power supply. This model is particularly noted for its durability and reliability, making it an excellent choice for both professionals and DIY enthusiasts.

At the heart of the DCA25USI2 is a robust 25 kW output, giving users plenty of power to run multiple tools, equipment, or systems simultaneously. This generator operates on a powerful water-cooled diesel engine, which not only enhances fuel efficiency but also extends the lifecycle of the machine compared to traditional gas-powered generators. The use of diesel fuel contributes to lower operational costs and makes it suitable for longer usage periods, particularly in remote locations.

One of the standout features of the DCA25USI2 is its compact design. Despite its high power output, this generator maintains a relatively small footprint, allowing for easy transportation and storage. Weighing around 1,800 pounds, it is fitted with a robust frame that provides durability while facilitating easy placement at job sites or outdoor events.

The generator is equipped with advanced noise reduction technology, ensuring that it operates quietly, which is crucial when working in residential areas or noise-sensitive environments. The sound-dampening enclosure significantly lowers operating noise levels, enhancing the overall user experience.

In terms of electrical output, the DCA25USI2 offers multiple options, including both single-phase and three-phase connections. This versatility allows users to power a variety of applications without needing additional adaptors. Moreover, the generator’s heavy-duty alternator ensures stable power delivery, protecting sensitive electronic devices from voltage spikes.

Another key characteristic of the DCA25USI2 is its user-friendly control panel, which features intuitive gauges and circuit breakers for easy management of power distribution. The panel includes a digital hour meter, allowing operators to track usage and plan for maintenance efficiently.

Safety features are also a priority with the DCA25USI2, including automatic shutdown capabilities to protect the engine against low oil levels and overheating. This thoughtful design helps to ensure both the performance and longevity of the generator.

In summary, the Multiquip DCA25USI2 stands out for its powerful output, efficient diesel engine, compact design, and advanced features, making it a top choice for anyone in need of reliable portable power. Whether for construction, events, or emergency backup, this generator is engineered to deliver exceptional performance and peace of mind.