ARMY TM 9-6115-643-24
AIR FORCE TO 35C2-3-445-22
2.98. POWER POTENTIAL TRANSFORMER.
a.
b.
c.
d.
2.99.
Inspection.
Shut down generator set.
Open output box access door.
Inspect power potential transformer (9, FIGURE 2-29) for security, cracked housing, broken wire terminals, loose
or missing hardware, and other damage.
Close output box access door.
AC CIRCUIT INTERRUPTFR RELAY.
2.99.1. lnspection.
a .
b .
c .
d .
Shut down generator set.
Open output box access door.
Inspect AC circuit interrupter relay (14, FIGURE 2-29) for security, cracked housing, broken wire terminals, and
other damage.
Close output box access door.
2.99.2. Testing.
a .
b .
c .
d .
e .
f.
g.
h.
i .
j .
k .
l .
Shut down generator set.
Open battery access door and disconnect negative battery cable.
Open output box access door.
Set multimeter for ohms and check for open circuits between terminals A1 and A2, B1 and B2, C1 and C2, and
11 and 12.
Connect jumper wire from cranking relay terminal Al to AC circuit interrupter relay terminal X.
Connect negative battery cable.
Check for closed circuits (continuity) between terminals A1 and A2, B1 and B2, C1 and C2, and 11 and 12.
Disconnect negative battery cable.
Replace AC circuit interrupter relay if indications are other than above.
If replacement is not needed, remove jumper wire.
Close output box access door.
Connect negative battery cable and close battery access door.
2.99.3. Removal.
a.
b .
c .
d .
e .
f .
Shut down generator set.
Open battery access door and disconnect negative battery cable.
Open output box access door.
Remove screws (10, FIGURE 2-29) and cover (11) from AC circuit interrupter relay (14).
Tag and disconnect AC circuit interrupter relay (14) electrical leads.
Remove screws (13), nuts (12), and AC circuit interrupter relay (14) from output box.
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