FUNCTION CHARACTERISTICS
35
NG10 - Manual - 04 - 2022
Reset counters
A change in status of a binary input effects a reset of all start/trip partial counters.
[1]
.
Reset CB Monitor
A change in status of a binary input effects a reset of all counters concerning the circuit breaker
diagnostic (sides H and L):
• Breaking Sum phase I
L1H
and I
L1L
• Breaking Sum phase I
L2H
and I
L2L
• Breaking Sum phase I
L3H
and I
L3L
• Breaking SumI
2
t phase I
L1H
and I
L1L
• Breaking SumI
2
t phase I
L2H
and I
L2L
• Breaking SumI
2
t phase I
L3H
and I
L3L
• CB Open counter
52a side H, 52b side H
52a side L, 52b side L
The CB position can be acquired by means of binary inputs connected to the auxiliary contacts
[2]
: the
information is used in the following functions:
• CB position (open-closed)
• CB diagnostic (N. of operations, trip time)
• Breaker Failure (BF).
Open CB - Close CB
The external acquisition of remote commands allows to drive CB remotely.
Note 1 The reset of the total counters is practicable by means ThyVisor command with Session Level 1 (available with password)
Note 2 Conventionally, the 52nd is the auxiliary contact that is in the same position of power contacts, while 52b is the auxiliary contact that is in the
opposite direction compared to the power contacts
CB-pos.ai
CB position
CB diagnostic
Breaker failure (BF)
52a
52
52b
+UAUX
-UAUX
Binary input INx
T 0
INx
t
ON
T0
n.o.
n.c.
INx tON
Logic
52a
52b
INx tOFF
INx
t
OFF
Binary input INx
T 0
INx
t
ON
T0
n.o.
n.c.
INx tON
Logic
INx tOFF
INx
t
OFF
Binary input allocation for CB remote command
CB-com.ai
Comando
Apertura
Comando
Chiusura
+UAUX
+UAUX
-UAUX
Apertura interruttoreH(L)
Binary input INx
T 0
INx
t
ON
T0
n.o.
n.c.
INx tON
Logic
Chiusura interruttoreH(L)
INx tOFF
INx
t
OFF
Binary input INx
T 0
INx
t
ON
T0
n.o.
n.c.
INx tON
Logic
INx tOFF
INx
t
OFF
TRIPPING MATRIX
(LED+RELAYS)
-UAUX
-UAUX
52a
52
O
I
52b
Binary input allocation for CB remote command
ExtProt.ai
Breaker failure (BF)
+UAUX
-UAUX
Trip ProtExt
Binary input INx
T 0
INx
t
ON
T0
n.o.
n.c.
INx tON
Logic
INx tOFF
INx
t
OFF
Assegnazione ingresso logico alla acquisizione del segnale d’intervento di una protezione esterna