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
1MRK505222-UUS C
Section 6
Impedance protection
261
Technical reference manual
Summary of Contents for Relion 670 series
Page 1: ...Relion 670 series Line differential protection RED670 ANSI Technical reference manual...
Page 2: ......
Page 40: ...34...
Page 50: ...44...
Page 60: ...54...
Page 126: ...120...
Page 384: ...378...
Page 496: ...490...
Page 556: ...550...
Page 602: ...596...
Page 620: ...614...
Page 794: ...788...
Page 864: ...858...
Page 988: ...982...
Page 998: ...992...
Page 1084: ...1078...
Page 1164: ...1158...
Page 1168: ...1162...
Page 1220: ...1214...
Page 1230: ...1224...
Page 1231: ...1225...