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For higher ranges than 300V, use potential
transformer(P.T) with a 150V A.C voltmeter. |
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But the voltmeter
of 600V is able to supply by order of customer. |
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When lettering the voltage ratio on voltmeter,
the meters for 3phase 4wire are lettered |
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as like as
the meters for 3phase 3wire. namely on 3phase
4wire in case of the indicating
for line-to-line voltage by line-to- ground
voltage,and line-to-line voltage by line-to-line
voltage, the meters are not wited the ¡î3
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Full scale of voltmeter when use the P.T,
the standard calibration value of voltmeters |
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are 150V and/or
300V but, the full scale of voltmeters are
indicated the 30Kv, 900V,
4500V and 600V etc. |
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For higher
ranges than 750V, use external multiplier
or voltage-dividing multiplier with |
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a 1mA instrument. |
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The D.C voltmeter
shuld be connected to the positive side
line as connection diagram. |
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The standard
current consumption of these D.C voltmeter
is 1mA. (1K¥Ø/V) |
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