Table 30:
ZQMPDIS (21)Technical data
Function
Range or value
Accuracy
Number of zones with selectable
directions
5 with selectable direction
-
Minimum operate current, phase-
to-phase and phase-to-earth
(10–30)% of I
Base
± 2.0% of I
n
Positive sequence impedance
(0.005–3000.000)
W
/phase
± 5.0% static accuracy
Conditions:
Voltage range: (0.1-1.1) x V
n
Current range: (0.5-30) x I
n
Angle: 85 degrees
Reverse positive sequence
impedance
(0.005–3000.000) Ω/phase
Impedance reach for phase-to-
phase elements
(0.005–3000.000) Ω/phase
Angle for positive sequence
impedance, phase-to-phase
elements
(10–90) degrees
Reverse reach of phase-to-phase
loop
(0.005–3000.000) Ω/phase
Magnitude of ground return
compensation factor KN
(0.00–3.00)
Angle for ground compensation
factor KN
(-180–180) degrees
Dynamic overreach
<5% at 85 degrees measured
with CVT’s and 0.5<SIR<30
-
Timers
(0.000-60.000) s
± 0.5% ± 10 ms
Operate time
30 ms typically
-
Reset ratio
less than 105%
-
6.2
Phase selection with load encroachment, quadrilateral
characteristic FDPSPDIS (21)
6.2.1
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
Section 6
1MRK 506 335-UUS A
Impedance protection
126
Technical manual
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