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9. Maintenance and Trouble Shooting
Possible
problem
Possible cause
Possible solution
There is no
display on device
after impose
power supply.
The power supply fails to
be imposed on the meter.
Check if the correct working voltage
has been imposed on the L/+ and N/-
terminals of the meter.
Check if the fuse for the control power
supply has been burnt down.
The measured
value is not
correct or does
not conform to the
expectation.
The voltage
measurement is not
correct.
Check if the neutral point has been
connected reliably.
Check if the measured voltage
matches the rated parameter of the
meter.
Check if the PT ratio has been set
correctly.
The current
measurement is not
correct.
Check if the measured current
matches the rated parameter of the
meter.
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Содержание SPM33
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