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8-2 AC OUTPUT MEASURING
TO AC RECEPTACLE
Fig. 8-8
Use a circuit like the shown in Fig.88 for measuring AC output. A hot plate or lamp with a power factor
of 1.0 may be used as a load. Adjust the load and rpm. and check that the voltage range is as specified in
Table 8-2.at the rated amperage and rated rpm.
-
Rated voltage
1lOV
120v
22OV
240v
Voltage range
107-119v 117-130v 215-238U 235-20OU
Table 8-2
8-3 MEASURING INSULATION RESISTANCE
Use a “Dr. Robin”generator tester in megger tester
mode or use a megger tester to check the
insulation resistance. Connect a megger tester to
one of receptacle output terminals and the ground
terminal, then measure the insulation resistance.
An insulation resistance of 1 megohm or more is
normal. (The original insulation resistance at the
time of shipment from the factory is 10 megohm
or more.)
If it is less than 1 megohm, disassemble the
generator and measure the insulation resistance of
the stator, rotor and control panel individually.
MEGGER TESTER
\
Fig. 8-9
l
STATOR
(1) Measure the insulation resistance between
BLUE lead and the core.
(2) Measure the insulation resistance between
WHITE lead and the core.
(3) Measure the insulation resistance between
YELLOW lead and the core.
(4) Measure the insulation resistance between
BROWN lead and the core.
n
Fig. 8-10
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