Figure 4.1-1 Logic Diagram: Directional Overcurrent Element (67) - Siemens Solkor 7PG2113 Technical Manual

7PG2113/4/5/6 Solkor Description of Operation
Minimum Polarising Voltage
The 67 Minimum Voltage setting defines the minimum polarising voltage level. Where the measured polarising
voltage is below this level no directional control signal is given and operation of protection elements set as
directional will be inhibited. This prevents mal-operation under fuse failure/MCB tripped conditions where noise
voltages can be present.

Figure 4.1-1 Logic Diagram: Directional Overcurrent Element (67)

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