Multiquip M2870300504 Engine Operating Panel, Generator Control Panel, Output Terminal Panel

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DCA-70SSIU (60 Hz) — GENERAL INFORMATION

DCA-70SSIU Ultra Silent™ (60 Hz) Series Familiarization

Generator

The MQ Power Model DCA-70SSIU (60 Hz) is a 56 kW generator (Figure 5) 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 Operating Panel

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

Tachometer

Water Temperature Gauge

Oil Pressure Gauge

Charging Ammeter Gauge

Fuel Level Gauge

Pre-Heat Pushbutton

Pre-Heat Lamp

Panel Light/Panel Light Switch

Auto ON/OFF Engine Controller (MPEC)

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, 175 amp Main Circuit Breaker

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

Automatic Voltage Regulator

Current Transformer

Over-Current Relay

Voltage Rectifer

Starter Relay

Engine Controller (Computer Controlled)

Voltage Selector Switch

Output Terminal Panel

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

Three 120/240V output receptacles (CS-6369), 50A

Three auxilliary circuit breakers, 50A

Two 120V output receptacles (GFCI), 20A

Two GFCI circuit breakers, 20A

Five output terminal lugs (3Ø power)

Battery Charger (Optional)

Water Heater (Optional)

Open Delta Excitation System

The DCA-70SSIU (60 Hz) 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 DCA-70SSIU (60 Hz) is powered by a 4 cycle, water cooled, direct injection, turbocharged ISUZU Model FF- 4BG1T Diesel Engine.This engine is designed to meet every performance requirement for the generator. Reference Table 1 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 18 — DCA-70SSIU (60 Hz) — OPERATION AND PARTS MANUAL — REV. #1 (01/06/09)

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Contents Parts List NO. M2870300504 Model DCA-70SSIUPage Heres HOW to GET Help Wilmington Ave Carson, CATable of Contents Direct TOLL-FREE access to our Parts Department DCA-70SSIU 60 Hz Specifications DCA-70SSIU 60 Hz Dimensions TOP, Side and Front DimensionsDCA-70SSIU 60 Hz Safety Message Alert Symbols Hazard SymbolsDCA-70SSIU 60 Hz Safety Message Alert Symbols This generator, other property, orGeneral Safety DCA-70SSIU 60 Hz Rules for Safe OperationBurns Electrical Safety DCA-70SSIU 60 Hz Rules for Safe OperationGenerator Grounding Maintenance Safety Battery SafetyTowing &Transporting Safety EmergenciesDCA-70SSIU 60 Hz Generator Decals DCA-70SSIU 60 Hz Generator Decals Generator Decals Cont inuedDCA-70SSIU 60 Hz Installation Typical Generator Grounding ApplicationIndoor Installation DCA-70SSIU 60 Hz InstallationOutdoor Installation When connecting the generatorGenerator Control Panel GeneratorEngine Operating Panel Output Terminal PanelDCA-70SSIU 60 Hz Major Components Major ComponentsPage DCA-70SSIU 60 Hz Generator Control Panel DCA-70SSIU 60 Hz Engine Operating Panel Major faults will shutdown the generator DCA-70SSIU 60 Hz Engine Operating PanelAuto On/Off Engine Controller Mpec DCA-70SSIU 60 Hz Output Terminal Panel Familiarization Output Terminal FamiliarizationDCA-70SSIU 60 Hz Output Terminal Panel Familiarization 120VAC Gfci ReceptaclesConnecting Loads Blower FanDCA-70SSIU 60 Hz Load Application Single Phase LoadThree Phase Load Motors and motor-drivenGenerator OutputVoltages Voltage Selector SwitchGenerator Amperage Gfci Receptacle Load CapabilityHow to Read the OutputTerminal Gauges DCA-70SSIU 60 Hz Gauge ReadingReading Amperage Uvwo Terminal Output Voltages Three-Phase PositionDCA-70SSIU 60 Hz Output Terminal Panel Connections 3Ø 240/139 Output Terminal Lug VoltagesDCA-70SSIU 60 Hz Output Terminal Panel Connections 3Ø 480/277 Output Terminal Lug Voltages1Ø 240V/120V Output Terminal Lug Voltages Lubrication Oil DCA-70SSIU 60 Hz PRE-SETUPCircuit Breakers Fuel CheckRefueling Procedure RefuelingOperation FreezingWeather Cleaning the RadiatorAir Cleaner Fan Belt Tension Vol % Freezing PointWiring BatteryBattery Cable Installation AlternatorEngines exhaust contains harmful emissions DCA-70SSIU 60 Hz Generator START-UP Procedure ManualBefore Starting Direct exhaust away from nearby personnelEngine Running LED on No LoadStarting Auto Mode Shutdown ProcedureEmergency Shutdown Procedure DCA-70SSIU 60 Hz Maintenance Check Oil Level Cleaning the Fuel StrainerAir Removal Replacing Oil FilterDCA-70SSIU 60 Hz Maintenance To ensure adequate startingTrailer Maintenance Coupler Type of hitch used on the trailer for towingBrakes DCA-70SSIU 60 Hz -TRAILER MaintenanceBrake Adjustment Check the wheel and drum for free rotationTires/Wheels/Lug Nuts TireWear/InflationSuspension DCA-70SSIU 60 Hz -TRAILER Maintenance Lug Nut Torque RequirementsStart all wheel lug nuts by hand DCA-70SSIU 60 Hz -TRAILERWIRING Diagram DCA-70SSIU 60 Hz Operation and Parts Manual REV. #1 01/06/09 DCA-70SSIU 60 Hz Generatorwiring Diagram Generator Wiring DiagramDCA-70SSIU 60 Hz Enginewiring Diagram Engine Wiring DiagramDCA-70SSIU 60 Hz -TROUBLESHOOTING Generator Generator TroubleshootingDCA-70SSIU 60 Hz -TROUBLESHOOTING Engine Controller Engine Controller Troubleshooting MpecItems Found In the Items Number Column If more than one of the samePart number on this Suggested Spare Parts list DCA-70SSIU 60 Hz Suggested Spare PartsDCA-70SSIU 60 HZ Generator Assy DCA-70SSIU 60 Hz Generator Assy DCA-70SSIU 60 Hz Control BOX Assy 0330000240 M22130014020330000180 0601870432DCA-70SSIU 60 Hz Control BOX ASSY. M2223000603 060220254635A 0040506000 0601807641DCA-70SSIU 60 Hz Engine and Radiator Assy 1132400791 B59232000341132402321 M1303200103DCA-70SSIU 60 Hz Engine and Radiator ASSY. 0602021070 06055113950603306395 0269200500DCA-70SSIU 60 Hz Outputterminal Assy Output Terminal Assy0801830904 M3230700003M3278500004 0040020000DCA-70SSIU 60 Hz Actuator Assy M2354200104 06021500950030006000 0343502090DCA-70SSIU 60 Hz Battery Assy M9103000304 0602220187M9310500014 0602220920DCA-70SSIU 60 Hz Muffler Assy M2333001203 B53301003030016910025 3943690210DCA-70SSIU 60 Hz Fueltank Assy 0605501074 M23630001020605505070 0605516090DCA-70SSIU 60 Hz Enclosure Assy Enclosure AssyM2423001602 M2413001902M1413400004 M2493107203DCA-70SSIU 60 Hz Enclosure ASSY. 0019108055 M245320160234A M2493408704 35A 0042308000DCA-70SSIU 60 Hz Rubber Seals Assy 0228900745 02289016600228900915 0228901120DCA-70SSIU 60 Hz Name Plate and Decals Assy M1550001304 M1550000204M1550002203 M2550001803EffectiveOctober 1, 2002 Terms and Conditions of Sale Parts FreightpolicyDCA-70SSIU 60 Hz Operation and Parts Manual REV. #1 01/06/09 Your Local Dealer is