94
UMG 96RM-PN
Procedure in the event of faults
Possible fault
Cause
Remedy
No display
External fuse for the power supply voltage has
tripped.
Replace fuse.
No current display
Measured voltage
is not connected.
Connect the measured voltage.
Measurement current is not connected.
Connect measuring-circuit current.
Current displayed is too high or
too low.
Current measurement in the wrong phase.
Check connection and correct if necessary.
Current transformer factor is incorrectly
programmed.
Read out and program the CT ratio at the current
transformer.
The current peak value at the measurement input
was exceeded by harmonic components.
Install current transformer with a larger CT ratio.
The current at the measurement input fell short
of.
Install current transformer with a smaller current
transformer ratio.
Voltage displayed is too high or
too low.
Measurement in the wrong phase.
Check connection and correct if necessary.
Voltage transformer incorrectly programmed.
Read out and program the voltage transformer
ratio at the voltage transformer.
Voltage displayed is too low.
Measurement range exceeded.
Use voltage transformers.
The peak voltage value at the measurement input
has been exceeded by the harmonics.
Attention! Ensure the measurement inputs are
not overloaded.
Phase shift ind/cap.
A current circuit is assigned to the wrong voltage
circuit.
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 circuit is assigned to the wrong voltage
circuit.
Check connection and correct if necessary.
Summary of Contents for UMG 96 RM-PN
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