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8-1-2
INSTRUMENTS
(1) VOLTMETER
AC voltmeter
is
necessary. The approximate
AC voltage ranges
of
the voltmeters to
be
used
for various types
of
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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