FUNCTION CHARACTERISTICS
26
NC020 - Manual - 05 - 2022
— Use of measured values
i
L1,
i
L2
, i
L3
I
L1,
I
L2
, I
L3
I
L1 RMS,
I
L2 RMS
, I
L3 RMS
i
N
I
N
I
EC
i
NC
V
1,
V
2
, V
3
Binary input IN1, IN2, IN3
Output relay K1...K4
Start LED
Trip LED
LED L1 Trip 50/51
LED L2 Trip 546N, 50N
LED L3 Trip 549H
LED L4 CB Open
LED L5 TD State
Breaker failure (BF)
Cold Load Pickup (CLP)
PROTECTION
Undercurrent - 37
Discharge timer - TD
Neutral unbalance current - 46N
RMS phase overcurrent - 50/51
Fundamental frequency phase overcurrent - 50/51
Residual overcurrent - 50N/51N
Peak overvoltage - 59H
Breaker failure - BF
CONTROL & MONITORING
Circuit Breaker supervision
Self test
EVENT RECORDING (SER)
Event 0
Event 1
Event 2
Event ...
Event 49
FAULT RECORDING (SFR)
Fault 0
Fault 1
Fault 2
Fault ...
Fault 19
DIGITAL FAULT RECORDER (OSCILLOGRAPHY)
Record 1
Record 2
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