DCA-800SSK — GENERAL INFORMATION

DCA-600SSK FAMILIARIZATION

Generator

The MQ Power Model DCA-800SSK is a 640 kW generator that has been designed as 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 Control Panel

The “Engine Control Panel” is provided with the following:

Tachometer

Water Temperature Gauge

Oil Pressure Gauge

Oil Filter Alarm Lamp

Charging Ammeter Gauge

Engine Warning Lamp Module

Air Cleaner Indicator

Engine Speed Switch

Pre-Heat Button

Pre-Heat Lamp

Emergency Stop Button

Battery Switch

Generator Control Panel

The “Generator Control Panel” is provided with the following:

Output Voltage Adjustment Knob

Frequency Meter (Hz)

AC Ammeter (Amps)

AC Voltmeter (Volts)

Ammeter Change-Over Switch

Voltmeter Change-Over Switch

Panel Light

Panel Light Switch

MPEC Module

Circuit Breaker ON/OFF Lamps

Circuit Breaker ON Switch

Circuit Breaker Reset Switch

Pilot Lamp

Microprocessor Controlled Alarm System

The DCA-800SSK generator is equipped with various alarms and LED status indicators. These alarms and status indicators are provided to add safety to the generator when operating under normal conditions. The DCA-800SSK generator is designed to shutdown in the event of low oil, high coolant temperature, low battery and other operation conditions that may cause severe damage to the generator.

Open Delta Excitation System

The DCA-800SSK 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 up to the horsepower of the engine.

Engine

The DCA-800SSKis powered by a 6 cylinder, water cooled, turbocharged KOMATSU Model SA12V140 diesel engine. This engine is designed to meet every performance requirement for the generator. Reference Table 2 for engine specifications.

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

The basic controls and indicators for the DCA-800SSK generator are addressed on the following pages.

Electronic Governor System

The electronic governor system is made up of two parts, an electronic controller that monitors frequency variation as the load increases and decreases, and an electronic actuator that controls the engine throttle. The frequency is regulated at ±0.25 to help protect sensitive equipment.

PAGE 26 — DCA-800SSK (STD) — OPERATION AND PARTS MANUAL — REV. #4 (06/03/10)

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Multiquip operation manual DCA-800SSK General Information

DCA-800SSK specifications

The Multiquip DCA-800SSK is a versatile and powerful generator designed for both commercial and residential applications. Renowned for its reliability and performance, this model is ideal for construction sites, events, and emergency power needs. One of its standout features is the robust 8000-watt output, which makes it suitable for running heavy-duty equipment, tools, and multiple appliances simultaneously.

At the heart of the DCA-800SSK is a reliable Honda engine, renowned for its durability and efficiency. This 4-stroke, air-cooled engine not only provides exceptional power but also boasts lower emissions, making it an environmentally friendly choice. The generator’s fuel tank capacity supports extended run times, ensuring that users can rely on it for prolonged periods without frequent refueling interruptions.

In terms of design, the Multiquip DCA-800SSK has a compact and sturdy frame that allows for easy transport and setup. With its rugged wheels and ergonomic handles, maneuvering the generator across job sites or in emergency situations is a breeze. Additionally, this model is equipped with an electric start feature, providing user convenience and saving time in critical situations.

The DCA-800SSK incorporates advanced technologies such as automatic voltage regulation (AVR), which ensures stable power delivery. This feature is crucial for protecting sensitive electronic devices from voltage fluctuations, making the generator suitable for a variety of applications, including powering computers, medical equipment, and other electronics.

Safety is also prioritized in the design of the DCA-800SSK. It comes with features like low-oil shutoff and overload protection, which prevent damage to both the generator and connected equipment.

With a noise level rated at a manageable decibel level, this generator is suitable for use in noise-sensitive environments. Overall, the Multiquip DCA-800SSK stands out for its combination of power, efficiency, and user-friendly features, making it a reliable choice for anyone in need of backup or portable power solutions. The brand’s reputation for quality and performance adds a layer of trust for users seeking dependable power sources in various settings.