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
(2) AMMETER
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,
1OOA)
(3) FREQUENCY
METER
Frequency range
:
About
45
to
65Hz
NOTE
:
Be careful of
the
frequency meter's input
voltage
range.
FOR
AC
L
Fig.
8-2
FQR
AC
Fig.
8-3
"
Fig.
8-4
-
19-
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