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Functions
2.7 Teleprotection for Distance Protection (optional)
Sequence
Figure 2-86
Logic diagram of the permissive underreach transfer trip (PUTT) using Z1B (one line end)
The permissive transfer trip should only send for faults in the „Forward" direction. Therefore, the first zone Z1
of the distance protection must be set to at address 1601 Op. mode Z1, see also Section 2.5.1 under side
title „Independent zones Z1 up to Z6".
192
SIPROTEC, 7SD5, Manual
C53000-G1176-C169-5, Release date 02.2011
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