Hioki SM-8216, Инструкция по эксплуатации, Страница: 33 / 44

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Resistance for
Discharge
(Approx. 100 k
Ω
)
Fig. 6.2.1 Equivalent Circuit of the DISCHARGE Status
2) CHARGE Function – mid position
This function is used to output the measuring voltage to the Rx ‘
‑
‘/’
+
’
measuring terminals not through the measuring circuit, but through a
resistance of approx. 30 k
Ω .
This function is conveniently used with
samples of a large capacitance to minimize the stabilizing time of the
measured value by precharging the sample enough with this setting,
followed by setting the function selector to the MEASURE position.
3) MEASURE – upper position
This function performs the measurement.
The measuring voltage is output to the Rx ‘
‑
‘/’
+
’ measuring terminals
and the current measuring circuit is connected to the terminals, and
measured insulation resistance value is indicated on the analog meter.
6.3 Interlocking Function – Using the HV-EN Connector
The super megohmmeter generates a high voltage to be used as a
measuringpower source. It is dangerous if this measuring voltage is output
to the sample or measuring jig not ready for measurement, yet. To protect
the operator from a hazard of electrical shock, the HV-EN (high voltage
enable)connector is provided on the rear of the unit to provide an
interlocking function in combination with a measuring jig.
CAUTION
When the function selector is set to the CHARGE or MEASURE
position, a high measuring voltage is applied to the Rx ‘
‑
‘/’
+
’
measuring terminals and an indicator in the Rx ‘
‑
‘ terminal lights
to call attention.
When the indicator is on, use utmost care to avoid an electric
shock.
SM-8216
Sample to
Measure
Measuring Rod
(Red)
Measuring Rod
(Black)