arrows define the non-directional functionality where faults can be detected in both
directions.
GUID-276A9D62-BD74-4335-8F20-EC1731B58889 V1 EN
Figure 98: Closed ring network topology where feeding lines are protected
with directional overcurrent IEDs
4.1.3.8 Signals
Table 199: DPHLPDOC Input signals
Name
Type Default Description
I_A SIGNAL 0 Phase A current
I_B SIGNAL 0 Phase B current
I_C SIGNAL 0 Phase C current
I
2
SIGNAL 0 Negative phase sequence current
U_A_AB SIGNAL 0 Phase-to-earth voltage A or phase-to-phase
voltage AB
U_B_BC SIGNAL 0 Phase-to-earth voltage B or phase-to-phase
voltage BC
U_C_CA SIGNAL 0 Phase-to-earth voltage C or phase-to-phase
voltage CA
U
1
SIGNAL 0 Positive phase sequence voltage
U
2
SIGNAL 0 Negative phase sequence voltage
Table continues on next page
1YHT530004D05 D Section 4
Protection functions
615 series 193
Technical Manual
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