ABB RELION 670 SERIES Applications Manual page 355

Line distance protection

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Table of Contents

1MRK 506 369-UUS -

Line distance protection REL670 2.2 ANSI

Application manual

Phase-to-ground fault in forward direction

With reference to figure 106, the following equations for the setting calculations can be

Index PHS in images and equations reference settings for Phase selection

with load encroachment function FDPSPDIS (21) and index Zm reference

settings for Distance protection function (ZMQPDIS, 21).

Impedance protection