Function
18
isoEV425_D00126_09_M_XXEN/03.2019
Internal device errors "E.xx" can be caused by external disturbances or inter-
nal hardware errors. If the error message occurs again after restarting the
device or after a reset to factory settings (menu item "FAC") , the device must
be repaired. After eliminating the fault, the alarm relays switch back automat-
ically or by pressing the reset button.
The self test can take a few minutes. It can be suppressed for the duration of
the device start by setting the parameter in the menu "SEt" to "S.Ct = off". This
allows the ISOMETER® to enter measurement mode quickly after connecting
the supply voltage U
s
.
Automatic self test
The device runs a self test after connecting the power supply and then every
24 h(selectable: off, 1h, 24 h).
E.07
The maximum permissible system leakage capacitance
C
e
is exceeded
Action:
Device not suitable for the existing system leakage capaci-
tance: uninstall device.
E.08
Calibration error during device test
Action:
If the error continues to exist after checking the device con-
nections, there is an error inside the device.
WARNING
If isoEV425 is used according to UL2231, the automatic self
test must be disabled. A manual self test must be carried out.
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