70
Troubleshooting
Symptom Check Items Remedy and Reference
Measured values
vary and fail to
stabilize.
Is a charging circuit located
near the measurement
object?
Disconnect the circuit
breaker for any nearby
charging circuits. If this is
not possible, use the lowest
measured value as the
measurement result.
Measured
values acquired
through insulation
resistance
measurement or
PV
Ω
measurement
uctuate over time.
(If using the
IR4057-50, use
the 1-minute value
display function.)
When the measuring object
connected is a capacitor:
Does the measuring object
have a large capacitance
component (capacitor)?
If it is possible to remove
the capacitor, do so.
If not, use the lowest
measured value as the
measurement result.
When the measuring
object connected is not a
capacitor:
This phenomenon
reects the inuence of
the measuring object
capacitance component.
This is not a malfunction or
error.
Select measured values
acquired one minute
after the start of the
measurement.
If a large capacitance
component included in the
measuring object causes
the uctuation of measured
values, select measured
values after they have
stabilized.
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