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8-1-2 INSTRUMENTS
(1) VOLTMETER
AC voltmeter
i s
necessary. The approximate
AC voltage ranges of the voltmeters to be used
for various types o f generators are as follows:
0 to 150V : Type with an output voltage of 11 0
0 to 300V : Type with
an output voltage of
220,
0 to
15OV,
0 to 330V : Dual voltage type
or 120V
230 or 240V
FOR
AC
Fig.
8-2
(2) AMMETER
I
AC ammeter is necessary. An AC ammeter
with a range that can be changed according
to the current rating of a given generator is
most desirable. (About 10A, 20A, 100A)
(3) FREQUENCY METER
Frequency range : About 45 to
65Hz
NOTE : Be careful
of
the frequency meter's input
voltage range.
FOR
AC
Fig.
8-3
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2 4 -
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