ABB Relion 620 Series - Page 267

coordination plan. In Figure 132 , the coordination plan shows an example of
operation characteristics in the LV-side incoming feeder and radial outgoing feeder.
Figure 132: Example coordination of numerical multiple-stage overcurrent
protection
4.1.2.7 Signals
Table 248: PH3LPTOC 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
BLOCK BOOLEAN 0=False Block signal for acti-
vating the blocking
mode
ENA_MULT BOOLEAN 0=False Enable signal for cur-
rent multiplier
Table 249: PH3HPTOC 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
BLOCK BOOLEAN 0=False Block signal for acti-
vating the blocking
mode
ENA_MULT BOOLEAN 0=False Enable signal for cur-
rent multiplier
1MRS757644 H Protection functions
620 series
Technical Manual
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