TM 11-6130-266-15
6-7. Overload Protection Test
a. Test Equipment and Materials.
(1) Transformer, Variable TF-171A.
(2) Multimeter TS-352B/U.
(3) Simulator Battery Variable Load Bank (FMC63743, Type K48149).
(4) Connector, Electrical (FSN 5935-921-3398).
b. Test Connections and Conditions . To perform this test, connect the equipment as shown in figure 6-3.
c. Procedure.
Control Settings
Step No.
Test procedure
Performance standard
Test equipment
Equipment under test
1
a. TF-171A set for
a. 230V-115V switch to
With DC output ADJ control set for 28.5 volts,
Dc ammeter indicates less than 27 amperes.
115 volts ac, 60
115V.
gradually reduce the resistance of the load
Hz.
b . AC circuit breaker to
bank until the load bank resistance is less than
ON.
0.5 ohm.
e. DC circuit breaker to
ON.
6-8. Test Data Summary
The test data are summarized as follows:
a. The 25.5-volt output must remain constant within 1 percent when the AC power source voltage is varied from 103.5 to 126.5 volts
AC and the load varies from 0 to 25 amperes.
b. The output current must not exceed 27 amperes regardless of the load.
6-8
