Signals - ABB RELION 620 Series Technical Manual

1MRS757644 F
4.1.3.8
620 series
Technical Manual
direction of the directional functionality. The double arrows define the non-
directional functionality where faults can be detected in both directions.
GUID-276A9D62-BD74-4335-8F20-EC1731B58889 V1 EN
Figure 137: Closed ring network topology where feeding lines are protected with
directional overcurrent protection relays

Signals

Table 276: DPHLPDOC Input signals
Name Type
I_A SIGNAL
I_B SIGNAL
I_C SIGNAL
I SIGNAL
2
U_A_AB SIGNAL
U_B_BC SIGNAL
U_C_CA SIGNAL
U SIGNAL
1
U SIGNAL
2
Table continues on next page
Protection functions
Default Description
0 Phase A current
0 Phase B current
0 Phase C current
0 Negative phase sequence current
0 Phase-to-earth voltage A or phase-to-phase
voltage AB
0 Phase-to-earth voltage B or phase-to-phase
voltage BC
0 Phase-to-earth voltage C or phase-to-phase
voltage CA
0 Positive phase sequence voltage
0 Negative phase sequence voltage
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