ABB Network Partner AB
Measurement of alternating
quantities
Version 1.0-00
1MRK 580 159-XEN
Page 7 - 24
4Testing
Stabilized ac current and voltage generators and corresponding current,
voltage, power and frequency meters with very high accuracy are neces-
sary for testing the alternating quantity measuring function. The operating
ranges of the generators must correspond to the rated alternate current and
voltage of each terminal.
Connect the generators and instruments to the corresponding input termi-
nals of a unit under test. Check that the values presented on the MMI unit
correspond to the magnitude of input measured quantities within the lim-
its of declared accuracy. The mean service values are available under the
submenu:
Service Report
Mean Values
The phasors of up to five input currents and voltages are available under
the submenu:
Service Report
Phasors
Primary
The operation of ADBS or IDBS function can be checked separately with
the RepInt = 0 setting. The value on the MMI follows the changes in the
input measuring quantity continuously.
Configure the monitoring output signals (see the signal list) to the corre-
sponding output relays. Check the operating monitoring levels by chang-
ing the magnitude of input current and observing the operation of the
corresponding output relays. The output contact changes its state only
when the changes in input measuring quantity compared to the present
value are higher than the set values for both dead-bands.
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