Setting Notes - Siemens SIPROTEC Manual

Line differential protection with distance protection

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2.5 Distance Protection

Tripping logic

In the actual tripping logic, the output signals generated by the individual zones are combined to form the

output signals „Dis.Gen. Trip", „Dis.Trip 1pL1", „Dis.Trip 1pL2", „Dis.Trip 1pL3",

„Dis.Trip 3p". The single-pole information implies that only a single-pole tripping will take place. Further-

more, the zone that initiated the tripping is identified; if single-pole tripping is possible, this is also signalled as

shown in the zone logic diagrams (Figures 2-71 to 2-75). The actual generation of the commands for the trip-

ping (output) relay is executed within the tripping logic of the entire device.

2.5.4.2 Setting Notes

The trip delay times of the distance stages and intervention options which are also processed 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.

SIPROTEC, 7SD5, Manual

C53000-G1176-C169-5, Release date 02.2011