ASEA AC55LC-3, Operation Manual, Page: 30 / 75

AC55LC-3, AC63LC-3, and AC75LC-3 Operations Manual....
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6.1 POWER TURN-ON PROCEDURE, cont.
Press the CONVERTER POWER (4) button and the screen will now change. As with the shore
power displays, the F1 - F4 (13) buttons will cycle through a variety of converter power data. Output
voltages and currents should indicate zero.
To turn on the converter, press the SHORE POWER ON (7) button. The converter will begin a
soft-start procedure which requires approximately 2 seconds to complete. At the conclusion of this
process, the indicator LEDs (10A & 7A) in the SHORE POWER control area of the display should
change from red to green. View the display information for CONVERTER POWER (4) and verify
that the displayed voltage is at the desired potential, frequency, and form. The system is now in the
Standby State.
NOTE: It is normal under no load conditions for the currents to indicate 3-6 Amps flowing. This
level of current is due to the internal filters and will not reduce the converter’s power rating.
6.1.1 Systems Not Equipped With The Seamless Transfer Option
When ready to transfer the ship’s load to the converter, press the
CONVERTER POWER ON (8)
button on the control panel. This will place voltage at the output terminals of the converter. The
green ON indicator LED (8A) should now be lit. The ship’s load may be transferred to the converter
at this time if additional, external switchgear is involved. The transfer must be performed in a
“
break-before-make
” method to prevent damage to the converter or generator(s). The converter and
generator(s) may not be operated in parallel at any time.
CONVERTER PHASE A PHASE B PHASE C
VOLTAGE: 0/0V 0/0V 0/0V
CURRENT: 0A 0A 0A
LOAD: 0.0 kVA 0.0 kVA 0.0 kVA