ARMY TM 9-6115-604-12
NAVY NAVFAC P 8 633-12
4-98.
AC KILOVOLTS METER M101 (2, Figure 2-2). AC KILOVOLTS meter M101 indicates generator output voltage
or bus voltage depending on the setting of GEN/BUS VOLTMETER switch S112.
a.
Remove. See Figure 4-66
(1) Open cabinet B door Tag and disconnect wiring to AC KILOVOLTS meter M101 (2).
(2) Remove screws and remove AC KILOVOLTS METER M101 (2) from front of cabinet B door.
b.
Test
Be sure power supply is deenergized before connecting meter. Death by
electrocution may result.
(1) Connect AC KILOVOLTS meter to power supply with variable voltage output. The meter movement requires
262 5 Vac 50/60 Hz for full scale meter deflection.
(2) Turn on power supply.
(3) Compare reading on AC KILOVOLTS meter against known output of power supply If reading differentiates
more than 2 percent, replace meter.
(4) Turn off power supply.
(5) Disconnect meter.
c.
Install. See Figure 4-66.
(1) Install AC KILOVOLTS meter M101 (2) and secure with screws provided.
(2) Connect wiring and discard tags Close cabinet B door.
4-99.
FREQUENCY METER M103 (3, Figure 2-2). FREQUENCY meter M103 indicates frequency output of
generator G1.
a.
Adjust With generator set shut down, check that needle on frequency meter M103 indicates at zero-adjust point
marked on face of meter If necessary, adjust the screw on the face of the meter to align the needle with the
mark.
b.
Test.
(1) Tag and disconnect wires from terminals 1 and 2 of frequency transducer A103 (See Figure 3-29).
(2) Ensure that wires from terminals + and - of frequency transducer A103 are connected securely.
(3) Connect a 120 V ac power source known to have a steady frequency across terminals 1 and 2 of frequency
transducer A103, and monitor FREQUENCY meter M103, located on cabinet B upper front door.
(4) FREQUENCY meter M103 should Indicate a steady Hz value.
(5) Replace FREQUENCY meter M103 If the Hz value indicated vanes by more than + 2 percent.
c.
Remove. See Figure 4-66.
(1) Open cabinet B door. Tag and disconnect wiring to FREQUENCY meter M103 (3)
(2) Remove attaching screws and remove FREQUENCY meter M103 (3) from cabinet B door.
d.
Install. See Figure 4-66.
(1) Install FREQUENCY meter M103 (3) and secure In cabinet B door.
(2) Connect wiring and discard tags. Close cabinet B door.
4-165
