P-9-TM-457-35 T.O. 35C2-3-442-2
TM-0746A-35
TM 5-6115-457-34
NOTE
6-169. INSTALLATION. Refer to figure
6-41 and install the reverse power relay
Remove cover from tactical relay
in position using four screw assemblies.
box to gain access to test points,
Refer to figure 1-19 and reconnect wiring.
see figures 6-15 and 6-41.
Replace the tactical relay box and cover.
1. With the generator set at rated
6-170. SHORT CIRCUIT RELAY (K13).
speed and voltage, and with the contactor
closed, measure the voltage from terminals
6-171. ON EQUIPMENT TEST.
8 and 5 (+) of the K13 relay to TB 2-5 (-).
Voltage should read 20-32 VDC.
a. Symptom and Isolation of Malfunc-
tion. A malfunction of the short circuit
relay K13 is usually indicated by failure
2. Apply 100 percent of rated load
of the generator fault monitoring system
and measure the voltage from terminals
1-4, 2-4 and 3-4 of short circuit relay K13.
to detect and react to a rise in generator
Voltage should read 5.6 0.5 VAC. If the
current output (in any phase) beyond preset
preceding conditions are met and the short
limits. To isolate the malfunction, pro-
circuit relay K13 does not actuate with ap-
ceed as follows.
plication of a short circuit, replace the K13
WARNING
relay.
Exercise extreme care not to
b. Removal. Refer to figure 6-41 and
touch exposed electrical connec-
tag, then disconnect wiring at the short
tions when working inside tactical
circuit relay terminals, Remove the four
relay box with generator set
screw assemblies securing the relay in
operating.
position.
Change 3
6-131
