DCA-300SSK SERIES — GENERAL INFORMATION

DCA-300SSK FAMILIARIZATION

Generator

The MQ Power DCA-300SSK series generators are 240 kW generators that are 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:

zTachometer

zThrottle Handle (Up to S/N 3701673)

zWater Temperature Gauge

zOil Pressure Gauge

zCharging Ammeter Gauge

zEngine Warning Display Module

zEngine Speed Switch (S/N 3701674~)

zPre-Heat Button

zPre-Heat Lamp

zEmergency Stop Button

zBattery Switch

zAuto On/Off Engine Controller (S/N 3701674~)

zIgnition Switch (Up to S/N 3701673)

Generator Control Panel

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

zOutput Voltage Adjustment Knob

zFrequency Meter (Hz)

zAC Ammeter (Amps)

zAC Voltmeter (Volts)

zAmmeter Change-Over Switch

zVoltmeter Change-Over Switch

zPanel Light

zPanel Light Switch

zPilot Lamp

Output Terminal Panel

The “OutputTerminal Panel ” is provided with the following:

z3 auxiliary 240/139V output receptacles, 50 amp

z3 auxiliary circuit breakers 240V @50 amps

z2 120V GFCI receptacles, 20 amp

z2 GFCI circuit breakers 120V@ 20amps

Control Box

The “Control Box ” is provided with the following:

zMain Circuit Breaker 800 amps

zOver-Current Relay

Open Delta Excitation System

The DCA-300SSK series generators are 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 leads: A, B, C and D. During light loads, the power to the AutomaticVoltage Regulator (AVR) is supplied from the leads parallel connections of B&C. When loads increase, the AVR switches and accepts power from leads A&D. The output of leads A&D increase proportionally with load. This of adding the voltages to each phase provides better voltage response during 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 DCA-300SSKis powered by a 4 cycle, water cooled, turbocharged KOMATSU Model SA6D125E-2 diesel engine. The DCA-300SSK2and DCA-300SSK3are powered by a 4 cycle, water cooled, air to air after cooled, turbocharged KOMATSU Model SAA6D125E-2 diesel engine. These engines are 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-300SSK series generators are addressed on the following pages.

Electronic Governor System

The DCA300SSK2 is equipped with an electronic governor system. It 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. Thr frequency is regulated at ±0.25 to help protect sensitive equipment.

Microprocessor Engine Control (MPEC)

The DCA300SSK3 incorporates the use of a microprocessor engine controller unit (MPEC), which monitors basic engine functions and also allows the generator to operate in an unattended mode.

PAGE 18 — DCA-300SSK SERIES — PARTS AND OPERATION MANUAL (STD) — REV. #4 (03/27/06)

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Multiquip DCA-300SSK manual Engine Control Panel, Generator Control Panel, Output Terminal Panel, Control Box
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DCA-300SSK specifications

The Multiquip DCA-300SSK is a powerful and versatile silent diesel generator designed to meet the demands of various applications, from construction sites to outdoor events. With its robust features and advanced technologies, this generator ensures reliability and efficiency in power generation.

One of the standout features of the DCA-300SSK is its impressive power output capability. With a maximum capacity of 300 kVA, it can support multiple tools and equipment simultaneously, making it ideal for construction projects, emergency backup, and rental services. Its diesel engine, known for its durability, provides a consistent power supply while being fuel-efficient.

The DCA-300SSK is also notable for its sound attenuation technology. Equipped with a specialized enclosure, this generator operates at a reduced noise level, making it suitable for noise-sensitive environments. This feature is particularly beneficial in urban settings or during nighttime operations where excessive noise could be disruptive.

Safety is paramount in any power generation equipment, and the DCA-300SSK integrates various safety features to protect both the operator and the machine. It includes an automatic shutdown function for low oil pressure and high coolant temperature, ensuring the engine is safeguarded against potential damage. Additionally, the generator is equipped with circuit breakers to prevent electrical overloads, enhancing overall operational safety.

Portability is another key characteristic of the DCA-300SSK. The unit is mounted on a heavy-duty frame with integrated lifting and transport provisions, enabling easy relocation. This feature is particularly advantageous for contractors who need to move the generator frequently from one job site to another.

The generator also features a user-friendly control panel, providing operators with easy access to monitoring essential parameters such as voltage, frequency, and operational hours. This design ensures that users can maintain optimal performance while minimizing downtime.

With its reliable performance, innovative technology, and user-centric design, the Multiquip DCA-300SSK stands out as a top choice for anyone seeking a dependable diesel generator solution. Whether for emergency backup power or heavy-duty usage, the DCA-300SSK delivers efficiency and peace of mind in power generation.
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