Table 51: ZDRDIR (21D) Group settings (basic)
Name Values (Range) Unit Step Default Description
IBase 1 - 99999 A 1 3000 Base setting for current level
VBase 0.05 - 2000.00 kV 0.05 400.00 Base setting for voltage level
IMinPUPP 5 - 30 %IB 1 10 Minimum pickup delta current (2 x current of
lagging phase) for Phase-to-phase loops
IMinPUPG 5 - 30 %IB 1 5 Minimum pickup phase current for Phase-to-
ground loops
AngNegRes 90 - 175 Deg 1 115 Angle of blinder in second quadrant for
forward direction
AngDir 5 - 45 Deg 1 15 Angle of blinder in fourth quadrant for forward
direction
3.6.2 Distance measuring zone, quadrilateral characteristic for
series compensated lines ZMCPDIS (21), ZMCAPDIS (21),
ZDSRDIR (21D)
Function description IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Distance measuring zone, quadrilateral
characteristic for series compensated
lines (zone 1)
ZMCPDIS
S00346 V1 EN
21
Distance measuring zone, quadrilateral
characteristic for series compensated
lines (zone 2-5)
ZMCAPDIS
S00346 V1 EN
21
Directional impedance quadrilateral,
including series compensation
ZDSRDIR
IEC09000167 V1 EN
21D
3.6.2.1 Application
Introduction
Sub transmission networks are being extended and often become more and more
complex, consisting of a high number of multi-circuit and/or multi terminal lines of
very different lengths. These changes in the network will normally impose more
stringent demands on the fault clearing equipment in order to maintain an unchanged
or increased security level of the power system.
1MRK504116-UUS C Section 3
IED application
189
Application manual