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5.6 Automatic Discharge Function
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NOTE
In W → I mode, the insulation-resistance test does not start up if the voltage
between the output terminals has not fallen below the safety voltage
(approximately AC 0.03 kV [AC insulation-resistance test] or approximately DC
60 V [DC insulation-resistance test]) upon completion of the withstand-voltage
test.
In I → W mode, the withstand-voltage test does not start until the voltage
between the output terminals has fallen below the safety voltage (approximately
DC 60 V) upon completion of the insulation-resistance test.
The test is terminated and the unit does not shift to the READY state until the
DANGER
lamp goes out. Furthermore, all key operations are invalid until the
unit returns to the READY state.
With an optional setting, the unit can change to the READY state, regardless of
the
DANGER
lamp indication, upon completion of the test (See Section 7.14).
In such a case, the voltage output terminals may contain residual electricity even
when the unit is in the READY state.
5.6 Automatic Discharge Function
When a test object that contains a capacity component is subjected to a
withstand-voltage test and insulation-resistance test, the object might remain
electrically charged, thereby causing an electric shock. This unit is equipped
with a function to discharge residual electricity upon termination of the
withstand-voltage test (discharge resistance: 726 k
Ω
).
The unit automatically switches to the internal discharge circuit to discharge
the test object (the
DANGER
lamp is lit).
When the voltage between the output terminals falls below the safety voltage
(approximately AC 0.03 kV or DC 60 V), the
DANGER
lamp goes out. The
larger the capacity component of the test object, the more time is required to
discharge the test object.
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