janitza UMG 96 RM-PN, Руководство пользователя

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UMG 96RM-PN
Checking the sum powers
If all voltages, currents, and powers for the phase
conductor in question are displayed properly, then
the sum powers measured by the UMG 96RM must also
be correct. For confirmation, the sum powers measured
by the UMG 96RM should be compared with the effective
and reactive power meter located in the supply.
Checking the measurement
Once all voltage and current measurement inputs are
properly connected, the signal phase and sum powers
are also calculated and displayed properly.
Checking the single phase powers
If a current transformer is assigned to the wrong phase
conductor, the associated power will also be measured
and displayed incorrectly.
The assignment of phase conductor to current
transformer on the UMG 96RM-PN is correct when
there is no voltage between the phase conductor and
the associated current transformer (primary).
To ensure that a phase conductor on the voltage
measurement input is assigned to the right current
transformer, you can short-circuit the current transformer
in question on the secondary side. The apparent power
displayed by the UMG 96RM-PN must be zero in this
phase.
If the apparent power is displayed correctly but
the effective power has a "-" sign, the current transformer
terminals are reversed or power is being supplied to
the power company.