Mains pro 1.6.1 Global Guide
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Act RCF: actual measured value of
ROCOF protection
Max RCF: maximum value of measured
ROCOF protection since unit power-up or
since the last reset ROCOF trip.
Voltage asymmetry measurement screen:
V asymmetry: actual value of asymmetry
of effective values measured on terminals
Ua, Ub, Uc
V negative: actual value of negative
sequence voltage
V positive: actual value of positive
sequence voltage
Negative sequence overvoltage and positive
sequence undervoltage are methods of
evaluation of angle asymmetry of the 3-phase
voltage system. See more in the chapter
Voltage unbalance (page 36).
Binary switches status screen:
List of the assigned binary switches.
Functions that are configured are displayed in
the appropriate order.
Its status is displayed in brackets.
Relay outputs 1-4 status screen:
Status of the first 4 MainsPro relay
outputs.
Name in parenthesis marks the function
assigned by the setpoints in group f(RE).
Relay output 5 status screen:
Status of the 5th MainsPro relay output.
Name in parenthesis marks the function
assigned by the setpoints in group f(RE).
Trip counters and indication screen:
Last Trip: indication of the latest event,
which caused trip. See the following
chapter for trip messages explanation.
TripCnt: total counter of MainsPro trips
since the MainsPro unit counters reset
U: counter of overvoltage and
undervoltage -related trips
f: counter of overfrequency and
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