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 TM 55-1925-273-10-1
0067 00
SWITCHBOARD
SHORE POWER
To Connect Shore Power:
1.
Ensure shore power breaker is open.
2.
Connect shore power cable to plug. MN DK, FR 21.
3.
Check for proper phase rotation.
4.
Open all other breakers feeding 1S and 2S buses (i.e. SSDG No.1, No.2, EDG Feedback)
5.
Close shore power breaker.
SINGLE GENERATOR OPERATION
1.
Star1 55DG No.1 or No.2 (see operating instructions).
2.
Adjust voltage to 440V, Frequency to 60 HZ.
3.
Open all other breakers feeding 1S and 2S buses (shore power, EDG feedback other SSDG, if running).
4.
Close generator breaker.
5.
Adjust voltage and frequency as required.
PARALLEL OPERATION
NOTE: SSDG No.1 is set with isochronous governor.
SSDG No.2 is set with 3% droop governor.
1.
Apply single SSDG to 1S/2S bus (see above).
2.
Start second SSDG, adjust voltage and frequency to match on-line SSDG.
3.
Turn synchroscope to incoming SSDG.
4.
Adjust speed of incoming SSDG until synchroscope moves slowly clockwise (FAST).
5.
When synchroscope is just before 1200 position, and synchronizing lamps are off, close breaker of incoming
SSDG.
6.
Adjust speed of droop SSDG (No.2) as load changes to maintain equal loads on both SSDGs.
SPLIT BUSS OPERATION
1.
In case of emergency 1S and 2S buses may be fed separately. Open bus tie switch and follow steps for single
generator operation for each SSDG. Caution: Under no circumstances should the bus tie switch attempted to be
closed while both 15 and 25 buses are energized,
Placard 13. Switchboard (Sheet 1 of 3)
0067 00-18
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