The power module is equipped with the following components: engine, generator, control systems, fuel tank, cooling system and exhaust system.
The 3500B Generator Sets are equipped with the Dynamic Gas Blending (DGB) retrofit kit. The DGB kit allows diesel engines to operate on diesel fuel and natural gas simultaneously.
3500B Generator Set Engines are electronically controlled diesel engines. The engines have electronic fuel injectors. The engines can be equipped with either jacket water aftercooling or separate circuit aftercooling. The engine is offered in an 8 cylinder engine, a 12 cylinder engine, and a 16 cylinder engine.
Engine efficiency and engine performance depend on adherence to proper operation and maintenance recommendations. Use the recommended fuels, lubrication oils, and coolant. Pay special attention to the air cleaner, to the fuel system, to the lubrication system, and to the cooling system maintenance. Refer to the Operation and Maintenance Manual, "Maintenance Interval Schedule" for more information on maintenance items.
The SR4B brushless generator can be used with the following loads: mixed loads of motors and lights, SCR-controlled equipment, computer centers, installations of communications and petroleum drilling applications.
SR4B generators are utilized in three-phase full-wave excitation and regulation. The generators are either four pole or six pole design with six lead configuration, or twelve lead configuration depending on frame size. The generators can produce electrical power in either 50 Hz or 60 Hz applications.
The enclosure for the power module is a shipping container that is mounted to an undercarriage chassis. The container meets the following standards and regulations:
- ISO/TC 104 Requirements for cargo containers
- ANSI/ MH5.1 Basic requirements for cargo containers
- ANSI/MH5.1.1 Requirements for closed van containers
- UIC Code 592-1 International union of railway
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| Illustration 1 | g03874947 |
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Load cable access door | |
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| Illustration 2 | g03842820 |
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Bus bar with connected load leads | |
The load cable access door is located on the outside of the power module. This is for access to the bus bars in order to connect the load leads.
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| Illustration 3 | g03874763 |
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Louver | |
Louvers are installed in the power module in order to receive fresh air. The louvers are sized in order to meet the inlet air supply that is required for the power module. The louvers allow fresh air to enter the power module that is needed for the engine air inlet and for radiator cooling during full load.
There are louvers that can be opened and closed manually. The louvers require the operator to open the louvers before the operation of the power module.
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| Illustration 4 | g03874710 |
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Fuel tank assembly | |
A
A fuel transfer system is available as an option for the power module. During the operation of the power module, the fuel transfer system will automatically fill the fuel tank from a pressurized fuel reservoir. The solenoid opens or closes a valve to maintain fuel tank level for an external, pressurized source.
The fuel transfer system is equipped with safety features, and an external overflow connection to be routed back to the external supply tank. The feature prevents the on-board fuel tank from being overfilled
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| Illustration 5 | g03874740 |
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Fuel/water separators | |
Three fuel/water separators are mounted on the fuel tank. The fuel/water separators are connected in parallel. The fuel/water separators provide primary filtration for the fuel for the engine.
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| Illustration 6 | g03874771 |
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Batteries | |
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| Illustration 7 | g03842906 |
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Battery disconnect switch | |
The batteries for the power module are mounted in racks on the floor in front of the controls for the generator set. The batteries provide power for the engine and for 24 volt interior lighting. The batteries are connected to a battery charger and to the alternator for charging. A battery disconnect switch is mounted to the top of the battery box. The battery disconnect switch is used to prevent the engine from being started while the power module is not being used.
Note: Do not use the battery disconnect switch to start and stop the generator set.
Auxiliary AC Power Distribution
Circuit breakers are available for 120/240 volt auxiliary power distribution.
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| Illustration 8 | g03896101 |
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Interior lighting | |
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| Illustration 9 | g03896110 |
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Switch for interior lights | |
There are 24 volt interior lights that are mounted in the engine area and in the operator control area inside the power module. The lights are wired to a 0-60 minute timer switch. The timer switch is mounted to the wall beside the entrance door. These lights are powered from the batteries.
Incandescent lighting and fluorescent lighting that is 120 volt is available as an option.
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| Illustration 10 | g03896120 |
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Electrical outlet receptacle | |
Electrical outlet receptacles that are mounted to the wall are available as an option.
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| Illustration 11 | g03842952 |
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Floor-standing switchgear | |
A floor-standing switchgear and controls are provided with the power module. The floor-standing switchgear and controls are for the proper controls and protection of the generator set. The following components are included within the switchgear: generator paralleling controls, generator paralleling controls operator interface and generator metering and protection.
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| Illustration 12 | g03842958 |
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Bus bar assembly | |
The bus bars are three-phase fully rated neutral bus bars that are made with the National Electrical Manufactures Association (NEMA) standard hole pattern. The bus bars are for the connection of the load cables. The bus bars are also for the connection of the generator cables. The bus bars are sized for full load capacity of the generator set. The ground bus is for a ground connection from the switchgear to the generator. The ground bus is the ground connection from the switchgear to the container. The ground bus is also a connection for the power module to earth ground. The bus bars are accessible from outside of the power module at the load cable access door.