Procedure in the event of faults
Possible fault Cause Remedy
No display External fusing for the power supply voltage has
tripped.
Replace fuse.
No current display Measurement voltage is not connected.
Connect the measuring-circuit voltage.
Measurement current is not connected. Connect measuring-circuit current.
Current displayed is too large or too
small.
Current measurement in the wrong phase. Check connection and correct if necessary.
Current transformer factor is incorrectly pro-
grammed.
Read out and program the current transformer
transformation ratio at the current transformer.
The current peak value at the measurement input
was exceeded by harmonic components.
Install current transformer with a larger transfor-
mation ratio.
The current at the measurement input fell
short of.
Install current transformer with a suitable trans-
formation ratio.
Voltage displayed is too large or too
small.
Measurement in the wrong phase. Check connection and correct if necessary.
Voltage transformer incorrectly programmed. Read out and program the voltage transformer
transformation ratio at the voltage transformer.
Voltage displayed is too small. Overrange. Install voltage transformers.
The peak voltage value at the measurement input
has been exceeded by harmonic components.
Caution! Ensure the measurement inputs are not
overloaded.
Phase shift ind/cap. A current path is assigned to the wrong voltage
path.
Check connection and correct if necessary.
Effective power, consumption/supply
reversed.
At least one current transformer connection
is mixed up/reversed.
Check connection and correct if necessary.
A current path is assigned to the wrong voltage
path.
Check connection and correct if necessary.
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