ABB Relion 670 series - Full-scheme distance protection, quadrilateral for earth faults ZMMPDIS (21), ZMMAPDIS (21); Introduction

6.5 Full-scheme distance protection, quadrilateral for
earth faults ZMMPDIS (21), ZMMAPDIS (21)
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Fullscheme distance protection,
quadrilateral for earth faults (zone 1)
ZMMPDIS
S00346 V1 EN
21
Fullscheme distance protection,
quadrilateral for earth faults (zone 2-5)
ZMMAPDIS
S00346 V1 EN
21
6.5.1 Introduction
The line distance protection is a , up to five zone protection with three fault loops for
phase-to-ground fault for each of the independent zones. Individual settings for each
zone resistive and reactive reach give flexibility for use on overhead lines and cables of
different types and lengths.
The Full-scheme distance protection, quadrilateral for earth faults functions ZMMDPIS
(21) and ZMMAPDIS (21) have functionality for load encroachment, which increases
the possibility to detect high resistive faults on heavily loaded lines , see figure
73.
1MRK505222-UUS C Section 6
Impedance protection
261
Technical reference manual