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