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3.5 Insulation Resistance Measurement (Except PV System)
1) Confirm the measuring switch MEASURE is off.
2) Set range switch according to the rated voltage to be measured.
(Reference)
In case of rated circuit voltage 100V, set the range switch to [125V].
In case of rated circuit voltage 200V, set the range switch to [250V].
In case of rated circuit voltage 400V, set the range switch to [500V].
In case of high voltage circuit equipment, set the range switch to [1000V].
In case of insulation resistance measurement at the completion examination at low
voltage circuit, set the range switch to [500V].
3) Confirm the display value is “0M
Ω
”, after short-circuited LINE probe and EARTH clip and
pressed measuring switch on.
4) In case that one end of the object to be measured is grounded, connect with clip at
(EARTH) end.
5) After confirmed HV lamp is not lightened by contacting (LINE) probe to the object to be
measured and pressed measuring switch on, the bar graph on LCD is lightening step by
step and the measured value will be displayed after all bar graph lightened.
3.6 AC Voltage Measurement
1)
Confirm the measuring switch MEASURE is off.
Object to be measured
(Insulation Resistance) Measurement
Set ON
In case of one end of load grounded
R L