Multiquip DCA800SSK2 manual General Information

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GENERAL INFORMATION

GENERATOR

The MQ Power Model DCA800SSK2 is a 640 kW generator (Figure 3) 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

Emergency Stop Switch

Water Temperature Gauge

Oil Pressure Gauge

Charging Ammeter Gauge

Fuel Level Gauge

Pilot Lamp

PreHeat Lamp

Engine Speed Switch

Battery Switch

Engine Alarm Lamps (6)

GENERATOR CONTROL PANEL

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

Frequency Meter (Hz)

AC Ammeter (Amps)

AC Voltmeter (Volts)

Ammeter ChangeOver Switch

Voltmeter ChangeOver Switch

Voltage Regulator

Panel Light/Panel Light Switch

3Pole, 2500 amp Main Circuit Breaker

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

•Automatic Voltage Regulator

•Current Transformer

•OverCurrent Relay

•Voltage Rectifi er

•Starter Relay

•Engine Controller (Computer Controlled)

•Voltage ChangeOver Board

OUTPUT TERMINAL PANEL

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

Three 240/139V output receptacles (CS6369), 50A

Three auxiliary circuit breakers, 50A

Eight output terminal lugs (3Ø power)

Battery Charger (Optional)

Water Heater (Optional)

OPEN DELTA EXCITATION SYSTEM

The DCA800SSK2 generator is equipped with the state of the art “OpenDelta” 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 rectifi ed 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 confi guration 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 opendelta 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 DCA800SSK2 is powered by a 6 cylinder, water cooled, direct injection, turbocharged airtoair KOMATSU SAA6D170E3 Diesel Engine. This engine is designed to meet every performance requirement for the generator. Reference Table 2 for engine specifi cations.

In keeping with MQ Power’s policy of constantly improving its products, the specifi cations 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 16 — DCA800SSK2 60 HZ GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (09/03/09)

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Contents Model DCA800SSK2 This Manual Must Accompany the Equipment AT ALL TimesProposition 65 Warning Administrator Reporting Safety DefectsNhtsa Table of Contents DCA800SSK2Parts Ordering Procedures Ordering parts has never been easierSafety Information Safety MessagesGenerator Safety General Safety Always know the location of the nearest Engine Safety Before servicing equipmentFuel Safety Towing Safety Never use fuel as a cleaning agent From fuel vapors or if fuel is spilled on a hot engineElectrical Safety Grounding SafetyPower Cord/Cable Safety Device. All installations should beBattery Safety Environmental SafetySpecifications Komatsu SAA6D170E3Dimensions DimensionsInstallation Typical Generator Grounding ApplicationOutdoor Installation Indoor InstallationMounting Generator GroundingGeneral Information Major Components Item noGenerator Control Panel Pilot Lamp Indicates the system is runningOwing from the U,V, and W Output Terminal Lugs to the load Air Filter Alarm When the air fi lter Engine Operating PanelPage Output Terminal Familiarization Output Terminal Panel FamiliarizationTerminal legs O and Ground are considered bonded grounds Connecting Loads Over Current RelayThree Phase Load Single Phase LoadLoad Application Generator Outputs Generator Output VoltagesVoltage ChangeOver Board Generator AmperageHOW to Read the AC Ammeter and AC Voltage Gauges Generator OUTPUTS/GAUGE ReadingAC Voltmeter Gauge Reading AC Ammeter Gauge ReadingOutput Terminal Panel Connections Uvwo Terminal Output Voltages3Ø-240V Uvwo Terminal Output Voltages 1Ø-240V Uvwo Terminal Output Voltages1Ø-480V Uvwo Terminal Output Voltages 3Ø-480V Uvwo Terminal Output Voltages1Ø-277V Uvwo Terminal Output Voltages INSPECTION/SETUP Circuit BreakersLubrication OIL Fuel CheckRefueling Procedure Only use #2 diesel fuel when refuelingCleaning the Radiator AIR Cleaner FAN Belt TensionCoolant ANTIFREEZE/SUMMER COOLANT/ Water Operation in Freezing WeatherBattery Battery Cable InstallationWiring AlternatorGenerator Startup Procedure Manual Before StartingEngine’s exhaust contains harmful emissions Is lit onPlace the engine speed switch in the LOW position Figure Starting ManualVerify that the main circuit breaker on lamp is lit on Ammeter No LoadGenerator Startup Procedure Auto Mode Starting Auto ModeBefore connecting this generator to any Place the engine speed switch in the High positionNormal Shutdown Procedure Generator Shutdown ProceduresEmergency Shutdown Procedure General Inspection AIR Cleaner MaintenanceAir Cleaner with Dust Indicator Fuel Tank Inspection Fuel AdditionAIR Removal Radiator Cleaning Check OIL LevelReplacing Oil Filter Flushing OUT Radiator and Replacing CoolantBattery Charger and Jacket Water Heater Power Connections Trailer Maintenance Trailer MaintenanceCoupler Type of hitch used on the trailer for towing Brake Drums or discs, Linings, and Hoses Electric BrakesAir Leaks Tire Wear/Inflation TIRES/WHEELS/LUG NutsSuspension Lug Nut Torque Requirements Never use an pneumatic air gun to tighten wheel lug nutsTrailer Wiring Diagram Trailer/Towing Vehicle Wiring DiagramGenerator Wiring Diagram Generator Wiring DiagramGenerator Wiring Diagram Main Breaker Engine Wiring DiagramEngine Wiring Diagram Controller Wiring DiagramTroubleshooting Generator Troubleshooting Engine Controller Clean/repair radiator grillAdjust governor actuator Adjust governor controllerKomatsu Engine Controller Page Sample Parts List Explanation of Code in Remarks ColumnSuggested Spare Parts To 3 unitsGenerator Assy Balancing Weight KIT Field AssyRESISTOR, 80W 50K Ω Insulator WasherGenerator Assy Bearing Cover PackingCover Bracket Stator CoverControl Panel Assy Circuit Breaker on Switch SwitchPanel Light Switch Control PanelControl BOX Assy Control BOX Ammeter Current TransformerElectric Parts SET Panel Machine ScrewControl BOX Assy Change Terminal Terminal PlateChange Plate Snap PINEngine Assy ENGINE, Komatsu SAA170E3 Engine FootRadiator Bracket HoseEngine Assy Hose Band Hose JointValve Drain JointRadiator ASSY. S/N 316346 and Above Connector CushionClamp TubeAlternator ASSY. S/N 311209 and Above BELT, Alternator PULLEY, NON HardeningALTERNATOR, Assy Theromostat ASSY. S/N 316346 and Above HOUSING, Thermostat PlateThermostat SEAL, ThermostatWater Pump Assy 6240611302 315602 and Above6162631515 311819 and AboveStarter ASSY. S/N 316346 and Above 6008133512 62218168100101061645 0164331645Engine Operating Panel Assy Battery Switch Battery Switch BracketEngine Speed Switch Alarm LampOutput Terminal Assy Output Terminal Output Terminal BracketTerminal Output Terminal CoverOutput Terminal Assy Rubber Cushion ReceptacleBattery Assy Battery Battery SheetBattery Band Battery BoltMuffler Assy Exhaust Pipe MufflerOutlet Pipe Fuel Tank Assy Fuel Tank Fuel Tank CAPFuel Filter Fuel Gauge HoseEnclosure ASSY.#1 Enclosure ASSY. #1 Enclosure ASSY. #1 Filler Bracket Center FrameRoof Panel Filler CoverEnclosure ASSY. #2 Rear Frame Louver PanelRear Frame Cover Duct CoverEnclosure ASSY. #2 Guide PanelRoof Panel Cover Enclosure ASSY. #3 Splasher Panel Side PanelSide Door DuctEnclosure ASSY. #3 C5454300604 21A C5494405904C5454300904 22A C5494405904Rubber Seals Assy 0228901750 02289017800228901800 0228901690Nameplate and Decals Assy Control Panel & BOX Group Engine & Radiator GroupDecal Fuel Priming Engine Operating Panel Group Output Terminal GroupNameplate and Decals Assy Battery Group Muffler GroupFuel Tank Group Bonnet GroupNameplate and Decals Assy C1552000403 Terms and Conditions of Sale Parts Freight PolicyPage HERE’S HOW to GET Help

DCA800SSK2 specifications

The Multiquip DCA800SSK2 is a robust and versatile portable diesel generator, designed to meet the demands of a wide range of applications. With a powerful 800 kW (kilowatt) capacity, it is particularly suited for use in construction sites, events, and emergency backup power situations. This generator combines reliability, durability, and ease of use, making it a popular choice among contractors and rental companies.

One of the main features of the DCA800SSK2 is its advanced sound attenuation technology. This ensures that the generator operates quietly, minimizing noise pollution while maximizing performance. The enclosure is designed to reduce sound levels without compromising on the cooling requirements, which extends the overall lifespan of the generator. Users can expect noise levels well within acceptable limits for urban and residential areas.

The DCA800SSK2 is equipped with a state-of-the-art digital controller that offers enhanced monitoring and diagnostic capabilities. This intelligent control system enables users to track key performance metrics, such as voltage, frequency, and operating hours, all from a user-friendly interface. Furthermore, it includes automatic shutdown features for low oil pressure, high temperature, and overcurrent situations, providing an added layer of safety and preventing potential damage.

Fuel efficiency is another standout characteristic of the Multiquip DCA800SSK2. With a large fuel tank, it can operate for extended periods without frequent refueling, making it ideal for long-term use in remote areas where access to fuel may be limited. The generator's engine is engineered to provide optimal fuel consumption, ensuring that operators can maximize their running time while minimizing operational costs.

The DCA800SSK2 includes multiple outlets for electricity distribution, allowing users to connect various tools and equipment simultaneously. This versatility makes it suitable for a wide range of applications, from powering heavy machinery on construction sites to providing backup power for critical infrastructure.

Overall, the Multiquip DCA800SSK2 stands out in the market for its combination of power, efficiency, and advanced features. With its robust build quality, innovative technologies, and user-centric design, it is an excellent choice for anyone in need of a reliable portable generator. Whether for professional use or emergency situations, the DCA800SSK2 delivers outstanding performance and peace of mind.
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