3-16
Over-temperature
protection
The device is protected by an over-
temperature protection. If an excessive
temperature is detected during operation, the device is switched to the ‘standby
state. A system message appears to notify the operator.
The operator has to take a break in order to cool down the device and then press the
clear soft key to continue using the system.
Test voltage deviation If the actual test voltage value differs more t
han 1000 V from the selected reference
value, the voltage indicator in the display starts flashing every second
an acoustic signal sounds in the same cycle.
Possible causes for such a voltage deviation may be, among others,
currents at cable terminations or very wet joints.
If a voltage deviation is indicated
, the operator has to weigh up whether a voltage
breakdown at the fault location can still be provoked
despite of the reduced test
voltage and, thus, whether it makes sense to continue the test.
If the voltage deviation
lasts until the test duration is expired, a system messages
appears to notify the operator about the voltage deviation during test:
During sheath fault pinpointing and permanent DC tests, a test voltage deviatio
is not indicated.
over temperature
clear
Cable problem
Test terminated
clear
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