7.1.8 Technical data
GUID-6C2EF52A-8166-4A23-9861-38931682AA7D v7
Table 48: ZMFPDIS technical data
Function
Range or value Accuracy
Number of zones 3 selectable
directions, 3 fixed
directions
-
Minimum operate current, Ph-Ph
and Ph-E
(5-6000)% of IBase ±1.0% of I
r
Positive sequence reactance
reach, Ph-E and Ph-Ph loop
(0.01 - 3000.00)
ohm/p
Pseudo
continuous ramp:
±2.0% of set value
Conditions:
Voltage range:
(0.1-1.1) x U
r
Current range:
(0.5-30) x I
r
Angle: At 0
degrees and 85
degrees
IEC 60255-121
points A,B,C,D,E
Ramp of shots:
±2.0% of set value
Conditions:
IEC 60255-121
point B
Positive sequence resistance
reach, Ph-E and Ph-Ph loop
(0.00 - 1000.00)
ohm/p
Zero sequence reactance reach (0.01 - 9000.00)
ohm/p
Zero sequence resistive reach (0.00 - 3000.00)
ohm/p
Fault resistance reach, Ph-E
and Ph-Ph
(0.01 -9000.00) ohm/l
Dynamic overreach < 5% at 85 degrees
measured with CVTs
and 0.5 < SIR < 30,
IEC 60255-121
-
Reset ratio 105% typically -
Directional blinders Forward: -15 – 120
degrees
Reverse: 165 – -60
degrees
Pseudo continuous ramp:
±2.0 degrees, IEC 60255-121
Resistance determining the load
impedance area - forward
(0.01 - 5000.00)
ohm/p
Pseudo
continuous ramp:
±2.0% of set value
Conditions:
Tested at ArgLd =
30 degrees
Ramp of shots:
±5.0% of set value
Conditions:
Tested at ArgLd =
30 degrees
Angle determining the load
impedance area
5 - 70 degrees Pseudo continuous ramp:
±2.0 degrees
Conditions:
Tested at RLdFw = 20 ohm/p
Definite time delay to trip, Ph-E
and Ph-Ph operation
(0.000-60.000) s ±0.2% of set value or ±35 ms whichever
is greater
Operate time 24 ms typically, IEC
60255-121
-
Reset time at 0.1 to 2 x Zreach Min. = 20 ms
Max. = 35 ms
-
1MRK 505 394-UEN A Section 7
Impedance protection
Line differential protection RED650 2.2 IEC 145
Technical manual
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