ASEA AC55LC-3, Operation Manual

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AC55LC-3, AC63LC-3, and AC75LC-3 Operations Manual....
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6.2 MULTI-CABINET OPERATION
Multi-cabinet systems are operated from the Master’s control panel. Each cabinet retains its own
control panel and metering display for individual monitoring. A load management option exists that
allows individual cabinets to load according to shore cord size (see section 7 for details).
Apply shore power to both cabinets and turn the disconnect switch (14) on each cabinet to the on
position. Within 1-3 seconds each cabinet will start, fans will be heard, and the display will become
active. Using the SHORE POWER (2) button on each cabinet, verify the applied shore power
measures the expected form. Use the Figure 9, Front Panel Controls on page 28 for button
references.
Press the SHORE POWER ON (7) button on the Master cabinet, bringing the Master and Slave
cabinets to the standby state. The green shore power LED (7A) on the Master and Slave cabinets
should now be lit. Measure the voltage being produced by the system by pressing the
CONVERTER POWER (4) buttons on the Master and Slave cabinets: they should indicate the
desired form and be within 5% of each other.
When ready to place the converter onto the ship’s distribution system, press the
CONVERTER
POWER ON (8) button on the Master cabinet. This will close the output contactors of both the
Master and Slave cabinets simultaneously. The green LED (8A) should light on the Master and
Slave cabinets. With the ship’s loads now supplied by the converter, measure the load power being
supplied by each cabinet to ensure compliance to the system ratings. The system status display will
indicate a summary load percentage, based upon a worst case measurement of all parameters.
If the system is equipped with the Seamless Transfer option, press the
SHIP’S POWER -
CONVERTER (9) button on the Master cabinet to transfer power from the generator to the
converter. The system will operate as per the description in Section 6.1.2.