ABB GDD471A001 2UBA002322R0001 2UBA002322R0003 module

The Load Sharing Module provides isochronous and droop load-sharing capability for engines equipped with Caterpillar digital controls in generator set applications. Additional equipment in the control system can include the Woodward SPM-A Synchronizer, Paralleling Phase Switch, Import/Export Control, Precision Frequency Control, Automatic Generator Loading Control, and Automatic Power Transfer and Loading Control. Figure 1-1 shows a typical system using a Load Sharing Module.

This section contains general installation instructions for the Load Sharing Module. Environmental precautions and location considerations are included to determine the best location for the Load Sharing Module. Additional information includes unpacking instructions, electrical connections, and an installation checkout procedure.

Unpacking Before handling the Load Sharing Module, read page iii, Electrostatic Discharge Awareness. Be careful when unpacking the Load Sharing Module. Check the unit for signs of damage such as bent or dented panels, scratches, and loose or broken parts. Notify the shipper of any damage.

Location Considerations

 Consider these requirements when selecting the mounting location:  Adequate ventilation for cooling  Space for servicing and repair  Protection from direct exposure to water or to a condensation-prone environment  Protection from high-voltage or high-current devices, or devices which produce electromagnetic interference  Protection from excessive vibration  An ambient operating temperature range of –40 to +70 °C (–40 to +158 °F)  All wiring to/from the Load Sharing Module should be limited to 30 m (98 ft) in length.

Do not mount the Load Sharing Module on the engine.

 Figure 1-2 is an outline drawing of the Load Sharing Module. Install the unit near the electronic engine control. It may be installed in any position. To maintain compliance with CE marking requirements, the European Union Low Voltage Directive requires that the Load Sharing Module (LSM) be mounted in an IP43 enclosure as defined in EN60529. Access to the Load Sharing Module must be restricted to qualified personnel.

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