Multiquip DCA250SSIU manual General Information

Page 16

GENERAL INFORMATION

GENERATOR

The MQ Power Model DCA250SSI/DCA250SSIU are 220 kW generators (Figure 3) 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 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

Battery Switch

Pre-Heat Lamp

Engine Alarm Lamps (DCA-250SSI 5 Alarm Lamps)

Engine Alarm Lamps (DCA-250SSIU 4 Alarm Lamps)

Engine Speed Switch

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

Pilot Lamp

Panel Light/Panel Light Switch

3-Pole, 800 amp Main Circuit Breaker

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

Automatic Voltage Regulator

Current Transformer

Over-Current Relay

Voltage Rectifi er

Starter Relay

Engine Control Unit (ECU)

Voltage Change-Over Board

OUTPUT TERMINAL PANEL

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

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

Three auxiliary circuit breakers, 50A

Two 120V output receptacles (GFCI), 20A

Two GFCI circuit breakers, 20A

Eight output busbar terminal lugs (3Ø power)

Battery Charger (Optional)

Water Heater (Optional)

OPEN DELTA EXCITATION SYSTEM

These 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 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 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

Each generator is powered by a 6 cylinder, water cooled, direct injection, turbocharged air-cooled ISUZU BH6UZ1X 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 — DCA250SSI/DCA250SSIU GENERATOR • OPERATION AND PARTS MANUAL — REV. #0 (01/12/11)

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Contents Model DCA250SSI Model DCA250SSIU This Manual Must Accompany the Equipment AT ALL TimesProposition 65 Warning Reporting Safety Defects NhtsaTable of Contents DCA250SSI/DCA250SSIU 60HZ GeneratorsParts 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 DCA250SSI/DCA250SSIUDimensions 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 VAC Gfci Receptacles 240V Twist-Lock Auxiliary ReceptaclesConnecting Loads Over Current RelayThree Phase Load Single Phase LoadLoad Application Generator Outputs Generator Output VoltagesVoltage Change-Over Board Generator Amperage Maximum AmpsHOW 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 AlternatorBefore Starting Generator START-UP Procedure ManualStarting Manual Frequency Meter Generator START-UP Procedure Auto Mode Starting Auto ModeGenerator SHUT-DOWN Procedures Normal Shutdown ProcedureEmergency Shutdown Procedure Never stop the engine suddenly except in an emergencyGeneral 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 Adjustment BrakesHydraulic Surge Brakes ActuatorTire 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 DiagramEngine Wiring Diagram Engine Wiring DiagramController Wiring Diagram Controller Wiring DiagramTroubleshooting Generator Troubleshooting Engine Controller Clean/repair radiator grillAdjust governor actuator Adjust governor controllerTroubleshooting Diagnostic Lamp Method of OperationPage Sample Parts List Explanation of Code in Remarks ColumnSuggested Spare Parts To 3 unitsGenerator Assy C1110100802 Includes Items W/#0601842334 0601823282Generator Assy C1154400103 C11323001140340406040 20A 952404470Engine Operating Panel Assy C3351100603 M53511001030019206015 0176060030Control BOX Assy M5214000002 0601809667011808015 M7030041000QControl BOX Assy 8972177780 75380708980056310 8980137900Control BOX Assy 0601802204 00271030200601806671 0601802149Engine and Radiator Assy M5924200004 11367147308980088400 1132402322Engine and Radiator Assy 0199900350 01999006500193602300 0605515170Output Terminal Assy C2231700403 M5230700003C0277500004 M9220100914Output Terminal Assy 0030012000 0845043704M9210000204 C2237101204Battery ASSY. DCA250SSI 0165511551 C91091006043972250004 7612252004Battery ASSY. DCA250SSU 0602220196 M9310500404M9104000004 0602220921Muffler Assy M5331100002 M53340000031141451920 C1334200304Fuel Tank Assy C1364002103 M53640000020605505025 0605505070Fuel Tank Assy 0010110080 25A 004001000025B 031110160 25C 021112140Enclosure Assy M5414000002 M5414000102C3414100104 M1413400004Enclosure Assy M5444200003 M54442001038225147004 M5443600004Enclosure Assy 51B 0401450080 M545410000352A C1494407404 52A M5494400404Rubber Seals Assy Rubber Seal Nameplate and Decals ASSY. DCA250SSI Control BOX Group Nameplate and Decals ASSY. -DCA250SSI Battery Group Nameplate and Decals ASSY. DCA250SSIU M5550000303 Nameplate and Decals ASSY. -DCA250SSIU Decal Document BOX Located Terms and Conditions of Sale Parts Freight PolicyPage HERE’S HOW to GET Help
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DCA250SSIU, DCA250SSI specifications

The Multiquip DCA250SSI and DCA250SSIU are powerful diesel generators designed to meet the demanding energy needs of various industries. These models are specifically engineered for reliability, efficiency, and performance, making them suitable for commercial applications, construction sites, and emergency backup power.

One of the standout features of both the DCA250SSI and DCA250SSIU is their impressive power output. Each model is capable of delivering 250 kVA, allowing users to run multiple equipment and tools simultaneously without worrying about power shortages. This makes them ideal for large-scale operations where consistent power is critical.

Both generators are equipped with a robust industrial-grade engine, ensuring long-lasting performance and durability. The DCA250SSI features a Kohler 4038T, whereas the DCA250SSIU includes a Yanmar engine. These engines are designed to operate efficiently under heavy loads while minimizing fuel consumption. The advanced design helps reduce emissions, making these models environmentally friendly.

The DCA250SSI and DCA250SSIU come with a sound-attenuated enclosure, which significantly reduces noise levels during operation. This design makes them suitable for use in urban settings or noise-sensitive environments, allowing businesses to comply with regulations without compromising on power supply.

Furthermore, both models integrate advanced technologies to enhance user experience. The digital controller allows for easy monitoring and control of the generator's performance, providing crucial information such as voltage, frequency, and engine parameters in real-time. This feature helps operators stay informed of the system's status and facilitates timely maintenance when needed.

Safety is another critical consideration in the design of these generators. The DCA250SSI and DCA250SSIU include a comprehensive range of safety features, such as low oil pressure shutdown, high-temperature shutdown, and overcurrent protection, ensuring reliable operation while safeguarding against potential hazards.

Versatility is key with these models. They can be configured for both single-phase and three-phase output, catering to diverse energy requirements across different applications. Additionally, their compact design makes them easy to transport and install, further enhancing their appeal for rental companies and on-the-go operations.

In conclusion, the Multiquip DCA250SSI and DCA250SSIU stand out in the generator market with their blend of power output, fuel efficiency, noise reduction, and advanced technologies. Their robust design and safety features make them a reliable choice for a wide array of industries, offering peace of mind and consistent energy wherever it's needed.