General Information

Generator

The MQ Power Model DCA45SSIU4 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

„„ECU Controller

„„Engine Speed Switch

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, 110 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

Open Delta Excitation System

The DCA45SSIU4 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

The DCA45SSIU4 is powered by a 4 cylinder, water cooled, direct injection, turbocharged ISUZU 4JJ1T 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.

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)

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 — DCA45SSIU4 60 hz Generator • operation and parts manual — rev. #1 (10/24/13)

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Multiquip dca45ssiu4 manual General Information

dca45ssiu4 specifications

The Multiquip DCA45SSIU4 is a robust and versatile diesel generator designed to meet the demands of various applications, ranging from construction sites to emergency power backup. With a powerful engine and a comprehensive array of features, this generator is engineered to deliver reliable performance and fuel efficiency.

At the heart of the DCA45SSIU4 is its 45 kVA output capability, which is powered by a highly efficient Yanmar engine. This engine not only provides ample power but also features advanced emissions technology that meets stringent environmental regulations. Users can rely on the DCA45SSIU4 for consistent energy delivery while minimizing their carbon footprint, making it a great choice for eco-conscious projects.

One of the standout features of the DCA45SSIU4 is its compact design. The generator is housed within a durable weatherproof enclosure that ensures reliable operation in various conditions. The enclosure is sound attenuated, significantly reducing noise levels, which is critical for projects in urban or noise-sensitive areas. This design allows the generator to operate quietly without disturbing the surrounding environment.

The DCA45SSIU4 is equipped with state-of-the-art digital control technology, featuring an intuitive user interface that simplifies monitoring and operation. This control panel includes essential indicators for voltage, frequency, and running hours, enabling users to track performance and maintenance needs efficiently. The generator also has a built-in automatic start/stop function, which activates the unit when power is needed and turns it off when it is not, thus enhancing convenience and saving fuel.

Another notable characteristic is its versatility in fuel efficiency. The DCA45SSIU4 can operate for extended periods on a single tank of diesel, making it ideal for both short-term and long-term power needs. Additionally, its features include a robust frame with forklift pockets and lifting points, ensuring easy transportation and setup at job sites.

In conclusion, the Multiquip DCA45SSIU4 combines power, durability, and advanced technology, positioning itself as an excellent solution for anyone in need of reliable temporary or backup power. Its features, including a powerful Yanmar engine, compact design, digital control technology, and exceptional fuel efficiency, make it a top choice for professionals across various industries. Whether for construction, events, or emergency situations, the DCA45SSIU4 stands out as a dependable generator that meets modern demands.