ABB Relion 620 Series - Page 618

Figure 324: Three-phase current quantities during the broken conductor fault in
phase A with the ratio of negative-sequence and positive-sequence currents
4.4.2.6 Signals
Table 548: PDNSPTOC Input signals
Name Type Default Description
I
1
SIGNAL 0 Positive sequence
current
I
2
SIGNAL 0 Negative sequence
current
I_A SIGNAL 0 Phase A current
I_B SIGNAL 0 Phase B current
I_C SIGNAL 0 Phase C current
BLOCK BOOLEAN 0=False Block signal for acti-
vating the blocking
mode
Table 549: PDNSPTOC Output signals
Name Type Description
OPERATE BOOLEAN Operate
START BOOLEAN Start
Protection functions 1MRS757644 H
618 620 series
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