Setting Notes - Siemens siprotec 7SD5 User Manual

Line differential protection with distance protection

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Tripping Logic

The output signals generated by the individual zones are logically connected to the

output signals „Dis.Gen. Trip", „Dis.Trip 1pL1", „Dis.Trip 1pL2",

„Dis.Trip 1pL3", „Dis.Trip 3p" in the actual tripping logic. The single-pole in-

formation implies that tripping will take place single-pole only. Furthermore, the zone

that initiated the tripping is identified; if single-pole tripping is possible, this is also

alarmed, as shown in the zone logic diagrams (Figures 2-55 up to 2-59). The actual

generation of the commands for the tripping (output) relay is executed within the trip-

ping logic of the entire device.

Setting Notes

The trip delay times of the distance stages and intervention options which are also pro-

cessed in the tripping logic of the distance protection were already considered with the

zone settings.

Further setting options which affect the tripping are described as part of the tripping

logic of the device.

C53000-G1176-C169-1

2.5 Distance Protection

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