Weidmüller 610 - Commissioning (Continued); Checking the Individual Power Ratings; Check the Sum Power Ratings

352576780000/00/02-2018
Commissioning
Checking the individual power ratings
If the current transformer is assigned to the wrong phase conduc-
tor, the associated power rating will be incorrectly measured and
displayed.
The assignment of the phase conductor to the current transformer
on the Energy Meter 610/610-PB is correct if there is no voltage
between the phase conductor and the associated current trans-
former (primary).
In order to ensure that a phase conductor on the voltage meas-
urement input is assigned to the correct current transformer,
the respective current transformer can be short-circuited at the
secondary terminals. The apparent power shown by the Energy
Meter 610/610-PB must then be zero in this phase.
If the apparent power is correctly displayed but the real power is
shown with a “-” sign, the current transformer terminals are invert-
ed or power is being fed to the power company.
Check the sum power ratings
If all voltages, currents and power ratings for the respective phase
conductor are correctly displayed, the sum power ratings meas-
ured by the Energy Meter 610/610-PB must also be correct. For
conrmation, the sum power ratings measured by the Energy
Meter 610/610-PB should be compared with the energy of the ac-
tive and reactive power meters at the power feed.