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 TM 55-1925-273-10-1
0111 00
OPERATOR'S MANUAL
INLAND AND COASTAL LARGE TUG (LT)
OPERATION UNDER USUAL CONDITIONS
SHIPS SERVICE DIESEL GENERATOR SHUTDOWN
INITIAL SETUP:
Personnel Required:
References:
One Watercraft Engineer, 88L
GENERAL
This work package contains the following procedures:
1.
Transfer the load from SSDG 1 to SSDG 2
2.
Transfer the load from SSDG 2 to SSDG 1
3.
Shift to shore power/Shut down a single SSDG
NOTE
This procedure assumes that both SSDGs are operating in parallel. Select the appropriate sec-
tion in this procedure to remove the desired SSDG from load. If only one generator is operating,
proceed with the single generator shutdown procedure, and shut down SSDGs when the load is
transferred to shore power.
TRANSFER THE LOAD FROM SSDG 1 TO SSDG 2
! CAUTION
Ensure that the total load does not exceed the capacity of the SSDG, or damage could result.
1.
Reduce the shipwide electrical load by setting all non-essential circuit breakers to OFF.
2.
Transfer the load from SSDG 1 to SSDG 2 by completing the following actions at the main switchboard in the EOS:
a.
Set the BUS GEN. 1 switch (figure 1, item 1) to 1-2, 2-3, or 3-1 position.
b.
Set the AC AMMETER switch (figure 1, item 2) to 1, 2, or 3 position.
c.
Set the BUS GEN. 2 switch (figure 1, item 3) to 1-2, 2-3, or 3-1 position.
d.
Set the AC AMMETER switch (figure 1, item 4) to 1, 2, or 3 position.
0111 00-1
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