Multiquip DCA-150SSKII - GENERAL INFORMATION, DCA-150SSKII FAMILIARIZATION Generator, Engine

Table of Contents

DCA-150SSKII — GENERAL INFORMATION

DCA-150SSKII FAMILIARIZATION

Generator

The MQ Power Model DCA-150SSKII is a 120 kW generator that is 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

"Charging Ammeter Gauge

"Engine Warning Lamp Module

"Engine Throttle Lever

"Pre-Heat Button

"Pre-Heat Lamp

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

Output Terminal Panel

The “Output Terminal Panel” is provided with the following:

"Three 240/139V output receptacles, 50 amp

"Two 120V input receptacles, 20 amp

"3 Load Circuit Breakers 265V @65 amps

"2 Load GFCI Circuit Breakers 265V@ 20amps

Control Box

The “Control Box” is provided with the following:

"Main Circuit Breaker 400 amps

"Over-Current Relay

Microprocessor Controlled Alarm System

The DCA-150SSKII 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-150SSKII 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-150SSKII 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 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-150SSKIIis powered by a 4-cycle water cooled, turbocharged KOMATSU Model S6D108E-2 diesel engine. This engine is designed to meet every performance requirement for the generator. Reference Table 1, page 13 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.

The basic controls and indicators for the DCA-150SSKII generator are addressed on the following pages.

PAGE 24 —DCA-150SSKII— PARTS AND OPERATION MANUAL — REV. #2 (05/08/01)