Operation and setting
57
IRDH375_D00124_05_M_XXEN/01.2020
AGH: 150 AK160
Terminal AK of the IRDH375 is connected to terminal AK160 of the
AGH150W-4. The nominal voltage range is extended to DC 0…1,760 V.
6.5.2 Adaptation to the system leakage capacitance
(Cemax : 150 µF)
This menu allows to adapt the ISOMETER® to the maximum system leakage
capacitance (max. 500 μF). Please note that the basic measuring time will be
increased to approximately 10 s when the setting is C
e
= 500 μF. Factory set-
ting = 150 μF.
6.5.3 Changing the measuring principle from AMP to DC
(Measure: AMP)
The DC measuring principle is only suitable for pure AC systems.
Factory setting = AMP.
6.5.4 Setting the repetition time for automatic self tests
(Autotest: 24h)
The time for the repetition of automatic self tests can either be set to 1 h or to
24 h or can be deactivated.
Factory setting = 24 h
The coupling monitoring is deactivated when an external
coupling device is connected.
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