28
NV021 - Manual - 08 - 2012
CHARACTERISTICS
f
u
L1
,
u
L2
,
u
L3
U
L1
,
U
L2
,
U
L3
U
1
U
2
Temperature (PT1....PT8)
Binary input
I
N1
,
I
N2
Output Start Relay
K1...K6
Output T
rip Relay
K1...K6
Start LED
L1...L5
Trip LED
L1...L5
Logic block (Block1)
Breaker failure (BF)
PROTECTIONS
Termica da sonde termometriche (26)
g
g
g g g
Undervoltage - 27
g
g
g g g g
Positive sequence undervoltage (27V1)
g
g
g g g g
Overvoltage - 59
g
g
g g g g
Negative sequence overvoltage (59V2)
g
g
g g g g
Average voltage (59Uavg)
g
g g g g
Underfrequency - 81U
g
g
g g g g
Overfrequency - 81O
g
g
g g g g
Frequency rate of change - 81R
g
g
g g g g
Breaker failure - BF
g
g g
g g g
CONTROL & MONITORING
Trip Circuit Supervision (TCS)
g
Automatic reclosure (optional)
g g g g
MEASURES
Frequency
g
Phase-to-phase voltage
g
Positive voltage
g
Negative voltage
g
Frequency rate of change
g
Temperature (Pt100 with MPT module)
g
EVENTS RECORDING
Event 0
g g
g g g
Event ...
g g
g g g
Event 299
g g
g g g
FAULTS RECORDING
Fault 0
g
g g g
g g
g g g
Fault 1
g
g g g
g g
g g g
Fault ...
g
g g g
g g
g g g
Fault 19
g
g g g
g g
g g g
OSCILLOGRAPHY
Record 1
g g g g g
g g
g g g
Record 2
g g g g g
g g
g g g
Record ...
g g g g g
g g
g g g
Use of measured values
Usage of measured values for protection, control and monitoring.