Signals - ABB RELION 620 Series Technical Manual

1MAC504801-IB E
4.1.3.8
620 series ANSI
Technical Manual
GUID-FA46F951-B376-4BC7-BCF4-F970C876CA7A-ANSI V1 EN
Figure 84: Closed ring network topology where feeding lines are protected with
directional overcurrent protection relays

Signals

Table 123: 67/51P Input signals
Name Type
I_A SIGNAL
I_B SIGNAL
I_C SIGNAL
I SIGNAL
2
V_A_AB SIGNAL
V_B_BC SIGNAL
V_C_CA SIGNAL
V SIGNAL
1
V SIGNAL
2
BLOCK BOOLEAN
ENA_MULT BOOLEAN
NON_DIR BOOLEAN
Default Description
0 Phase A current
0 Phase B current
0 Phase C current
0 Negative phase sequence current
0 Phase to ground voltage A or phase to phase voltage AB
0 Phase to ground voltage B or phase to phase voltage BC
0 Phase to ground voltage C or phase to phase voltage
CA
0 Positive phase sequence voltage
0 Negative phase sequence voltage
0=False Block signal for activating the blocking mode
0=False Enable signal for current multiplier
0=False Forces protection to non-directional
Section 4
Protection functions
181