TB 9-4931-383-50
(2) Adjust OUTPUT VOLTMETER adjust (fig. 5 or 6) for indication of 1.0 on 0-to-
1.0 scale of panel meter (R).
21. Voltage Trip
a. Performance Check
(1) Position TI controls as listed in (a) through (d) below:
(a) Voltage dials to 10.X00000.
(b) VOLTAGE TRIP to 10.
(c) VERNIER fully clockwise.
(d) POWER switch to OPR.
(2) Turn VERNIER control counterclockwise until trip circuit actuates.
If
VERNIER control is not approximately 30 degrees from fully clockwise, perform b below.
(3) Repeat technique of (1) and (2) above, using settings listed in table 9.
Table 9. Voltage Trip
Test Instrument Switch Settings
VOLTAGE TRIP
VOLTAGE RANGE
Voltage Dials
100
100
10X.X0000
10000
1000
10XX.X000
(4) Position TI controls as listed in (a) through (d) below:
(a) VOLTAGE RANGE switch to 10.
(b) Voltage dials to 4.000000.
(c) VOLTAGE TRIP switch to 10.
(d) VERNIER control to 12 o'clock.
(5) Turn VOLTAGE RANGE switch to 100. Voltage trip circuit will actuate.
(6) Turn VOLTAGE TRIP switch to 100 and reset TI.
(7) Turn VOLTAGE RANGE switch to 1000. Voltage trip circuit will actuate.
(8) Turn VOLTAGE TRIP switch to 1000 and VERNIER control fully clockwise.
Reset TI.
(9) Turn VOLTAGE RANGE switch to 100. Voltage trip circuit will not actuate.
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