Technical Data
48
Functions
NOTE:
Ir: CT rated secondary current, 1A or 5A;
Distance protection (ANSI 21, 21N)
Item
Rang or Value
Tolerance
Number of settable zone
5
zones
,
with
additional
extended zone
Distance characteristic
Polygonal
Resistance setting range
0.01Ω
~
120Ω, step 0.01Ω, when
Ir=5A;
0.05Ω
~
600Ω, step 0.01Ω, when
Ir=1A;
≤± 5.0% static accuracy
Conditions:
Voltage range: 0.01 Ur to 1.2 Ur
Current range: 0.12 Ir to 20 Ir
Reactance setting range
0.01Ω
~
120Ω, step 0.01Ω, when
Ir=5A;
0.05Ω
~
600Ω, step 0.01Ω, when
Ir=1A;
Time delay of distance zones
0.00 to 60.00s, step 0.01s
≤±1% or +20 ms, at 70%
operating setting and setting
time > 60ms
Operation time
22ms typically at 70% setting of
zone 1
Dynamic overreaching for zone 1
≤±5%, at 0.5<SIR<30
Tele-protection (ANSI 85
– 21, 21N, 67N)
Item
Rang or Value
Tolerance
Operating time
25ms typically in permission
mode for 21/21N, at 70% setting
Overcurrent protection (ANSI 50, 51, 67)
Item
Rang or Value
Tolerance
Definite time characteristics
Current
0.08 Ir to 20.00 Ir
≤ ±3% setting or ±0.02Ir
Time delay
0.00 to 60.00s, step 0.01s
≤ ±1% setting or +40ms, at 200%
operating setting