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93
9. Maintenance and Trouble Shooting
Possible problem
Possible cause
Possible solution
The meter has no
indication after the
control power supply
is imposed.
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 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 transformation ratio of the
PT has been set correctly.
The measured value is
not correct or does not
conform to the
expectation.
The current
measurement is not
correct.
Check if the measured current matches
the rated parameter of the meter.
Check if the transformation ratio of the
CT has been set correctly.
Содержание PMAC735
Страница 7: ...7 1 1 Pictures of the main unit Side view Rear view 1 2 Picture of the extension module Rear view...
Страница 18: ...18 B Low voltage 3 phase 3 wire delta connection 3 CTs C Low voltage 3 phase 3 wire delta connection 2 CTs...
Страница 19: ...19 D High voltage 3 phase 4 wire star connection E High voltage 3 phase 3 wire delta connection 3 CTs...
Страница 32: ...32 4 2 7 Frequency Press the key once and you will see the frequency data S1 S2 S3 S4 RL1 RL2 RL3 RL4...