TM 9-6115-604-34
NAVFAC P-8-633-34
(12)
Verity the following:
(a)
The voltmeter reads 110 to 130 V ac.
(b)
The ammeter reads 3.68 to 3.74 amperes.
(c)
The microammeter reads 195 to 200 microamperes.
(13)
If the voltmeter and ammeter readings meet the conditions of steps (10) and (12), above, then power
factor transducer PFT is good if micro ammeter readings also meet the stated conditions.
NOTE
If the power factor transducer PFT tests out "good" in accordance with step (13), above, but
not in accordance with step (7), above, then there is something wrong with AC AMPERES
motor Ml 02 or circuit elements related to it.
(14)
If the voltmeter and ammeter readings do not meet the conditions of steps (10) and (12), above, then the
test of power factor transducer PFT is inconclusive, indicating only that some other element in circuit with
the transducer is defective.
(15)
If power factor transducer PFT is found to be defective, replace it in accordance with step h, below.
h.
Power Factor Transducer PFT Removal and Installation.
WARNING
Do not work on energized equipment Generator set must be shut down. Transducer voltage
and current Inputs and outputs are hazardous Performing maintenance on energized
transducers may result In Injury or death.
(1)
Remove. See Figure 1 G8.
(a) Tag and disconnect wires from power factor transducer PFT (8).
(b) Remove screw and captive washer assemblies (7) to remove power factor transducer PFT (8).
(2)
Install. See Figure 10-8.
(a) Install power factor transducer PFT (8) and secure with screw and captive washer assemblies (7).
(b) Make wiring connections to power factor transducer PFT (8) as tagged. Remove and discard tags.
i.
Watt Transducer WMT On Equipment Test.
WARNING
Do not work on energized equipment Generator set must be shut down Transducer voltage
and current Inputs and outputs are hazardous. Performing maintenance on energized
transducers may result In Injury or death.
(1)
With the generator set shut down, interconnect generator set output cable assemblies with a 750 kW, 0.8
power factor load bank.
(2)
Start and operate the generator set in accordance with the Operator and Organizational Maintenance
Manual.
(3)
Using a stopwatch, verify that KILOWATT HOURS counter CNTR registers 2.4 to 12.6 kilowatt-hours, in 60
seconds, and also that AC KILOWATTS meter Ml 07 indicates 735 to 765 kilowatts. If so, then watt
transducer WMT is good and test is over. Otherwise, proceed as follows.
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