7.4.8 Technical data
Table 98: ZMFCPDIS 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
n
Positive sequence reactance
reach, Ph-E and Ph-Ph loop
(30 - 3000) Ω/phase
" +- 2.0% static accuracy +- 2.0 deg static
angular accuracy Conditions: Voltage
range: (0.1 - 1.1) x Ur Current range: (0.5
- 30) x Ir Angle: At 0 deg and 85 deg"
Positive sequence resistance
reach, Ph-E and Ph-Ph loop
(30 - 3000) Ω/phase
Zero sequence reactance reach (100.00 - 9000.00) Ω/p
Zero sequence resistive reach (15.00 - 3000.00) Ω/p
Fault resistance reach, Ph-E and
Ph-Ph
(1.00 - 9000.00) Ω/l
Dynamic overreach < 5% at 85 deg
measured with CVT's
and 0.5 < SIR <30
Definite time delay to trip, Ph-E
and Ph-Ph operation
(0.000 - 60.000) s
±0.2% or ±35 ms whichever is greater
Operate time 16 ms typically IEC 60255-121
Reset time at 0.1 to 2 x Z
reach
Min = 20 ms
-
Max = 35 ms
Reset ratio 105% typically -
7.5 Pole slip protection PSPPPAM
7.5.1 Identification
Function description
IEC 61850
identification
IEC 60617
identification
ANSI/IEEE C37.2
device number
Pole slip protection PSPPPAM U
cos
78
7.5.2 Functionality
The phenomenon pole slip, also named out of step conditions, occurs when there is
phase opposition between different parts of a power system. This is often shown in a
simplified way as two equivalent generators connected to each other via an equivalent
transmission line and the phase difference between the equivalent generators is 180°.
1MRK502052-UEN B Section 7
Impedance protection
251
Technical manual
To Next Page
Loading...
