ARMY TM 9-6115-60412
NAVY NAVFAC P-8-633-12
(d)
Compare calculated voltage output against the actual voltage readout off AC KILOVOLTS meter
M101 R. Voltage readout off M101 R should be within 5.0 percent of the calculated voltage. Meter
movement requires 262.5 V ac 50/60 Hz for full scale meter deflection. If not, replace AC
KILOVOLTS meter M101 R.
(3)
Replace.
(a)
Shut down the generator set. See Figure 2-3.
(b)
Open the RCM panel by unlocking three oval studs across the top of the panel.
(c)
Tag and disconnect wiring from AC KILOVOLTS meter M101 R.
(d)
See Figure 5-2. Remove mounting nuts and lockwashers from the AC KILOVOLTS meter M101R
(2) mounting studs to remove the meter.
(e)
Remove nuts and lockwashers from mounting studs of replacement meter M101R, if Installed.
(f)
Install replacement AC KILOVOLTS meter M101R and secure with mounting nuts and lockwashers.
(g)
Connect wires to M101R terminals as tagged. Remove and discard tags.
(h)
Close the RCM panel and secure by locking the three oval studs across top of the panel.
c.
Frequency Meter M103R and Frequency Transducer A103R (28. Figure 5-1 and 3. Figure 5-2). Frequency
meter M103R indicates frequency output of generator G1. Frequency meter M103R and frequency transducer
A103R are a matched pair and should be tested and replaced, if needed, as a set.
(1)
Adjust. Zero Adjust Frequency Meter M103R. An adjustment screw on the face of frequency meter M103R
is used to zero the meter when it is not energized.
Do not touch exposed electrical connection when a source of power such as
utility power or another generator set is connected to the load terminals. Death or
injury may result from failure to observe this warning.
(2)
Test.
(a)
Shutdown the generator set. See Figure 2-23.
(b)
Open the RCM panel by unlocking three oval studs across the top of the panel.
(c)
Tag and disconnect wires from terminals 1 and 2 of frequency transducer A103R (28, Figure 5-1).
(d)
Ensure that wires from terminals + and-of frequency transducer A103R (28) are connected securely.
(e)
Connect a 120 V AC power source known to have a steady frequency across terminals 1 and 2 of
frequency transducer A103R (28) and monitor frequency meter M103R (3, Figure 5-2) on RCM front
panel.
(f)
Frequency meter M103R should indicate a steady Hz value.
(g)
Replace frequency meter M103R if the Hz value indicated vanes by more than ±2 percent.
(3)
Replace frequency meter M103R and frequency transducer Al 03R are a matched pair and should be
replaced as a set.
(a)
Shut down the generator set. See Figure 2-23.
(b)
Open the RCM panel by unlocking three oval studs across the top of the panel.
(c)
Tag and disconnect wires from frequency meter M103R terminals (3, Figure 5-2).
(d)
See Figure 5-2 Remove nuts and lockwashers from frequency meter M103R (3) mounting studs to
remove meter.
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