6.2.6
Technical data
Table 112:
ZMCPDIS, ZMCAPDIS (21)Technical data
Function
Range or value
Accuracy
Number of zones
Max 5 with selectable direction
-
Minimum operate residual
current, zone 1
(5-1000)% of
IBase
-
Minimum operate current, phase-
phase and phase-ground
(10-1000)% of
IBase
-
Positive sequence reactance
(0.10-3000.00) Ω/phase
± 2.0% static accuracy
± 2.0 degrees static angular
accuracy
Conditions:
Voltage range: (0.1-1.1) x V
n
Current range: (0.5-30) x I
n
Angle: at 0 degrees and 85
degrees
Positive sequence resistance
(0.10-1000.00) Ω/phase
Zero sequence reactance
(0.01-9000.00) Ω/phase
Zero sequence resistance
(0.01-3000.00) Ω/phase
Fault resistance, phase-ground
(0.10-9000.00) Ω/loop
Fault resistance, phase-phase
(0.10-3000.00) Ω/loop
Dynamic overreach
<5% at 85 degrees measured
with CCVT’s and 0.5<SIR<30
-
Impedance zone timers
(0.000-60.000) s
± 0.5% ± 10 ms
Operate time
24 ms typically
-
Reset ratio
105% typically
-
Reset time
30 ms typically
-
6.3
Phase selection, quadrilateral characteristic with fixed
angle FDPSPDIS (21)
6.3.1
Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Phase selection with load
encroachment, quadrilateral
characteristic
FDPSPDIS
Z<phs
SYMBOL-DD V1 EN
21
6.3.2
Introduction
The operation of transmission networks today is in many cases close to the stability
limit. Due to environmental considerations, the rate of expansion and reinforcement of
Section 6
1MRK505222-UUS C
Impedance protection
218
Technical reference manual
Summary of Contents for Relion 670 series
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