V-Protection Module – Voltage Protection [27/59]
Commissioning: Undervoltage Protection [27]
This test can be carried out similar to the test for overvoltage protection (by using the related undervoltage
values).
Please consider the following deviations:
•
For testing the threshold values the test voltage has to be decreased until the relay is activated.
•
For detection of the fallback value, the measuring quantity has to be increased so to achieve more than
103% of the trip value. At 103% of the trip value the relay is to fall back at the earliest.
EN MRU4 10/09
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