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8-1-2 INSTRUMENTS
!
j
(1) VOLTMETER
AC voltmeter is necessary.The approximate
AC voltage ranges
of the voltmeters
to be
used for
various
types
of generators
are
as
/ .
;G@\
i
I
e
0 to 15OV: Type with an output voltage
of
:
..
.
i
..
a .
.
follows:
!
G
5
I
110
or
120V
4
3
0 to 3OOV: Type with an output voltage
of
220,230 or 240V
0 to EOV, 0 to 33OV: Dual voltage type
FOR AC
Fig.
8-2
(2) AMMETERS
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 10AJ 20AJ 100A)
(3)
FREQUEXCY METER
Frequency range
:
About 45 to 65Hz
NOTE: Be careful of the frequency meter's
input voltage range.
FOR A C
Fig.
8-3
Fig.
8-4
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41
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