ABB RED615 ANSI, Руководство по эксплуатации продукта

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Table 37. Transient/intermittent earth-fault protection (INTRPTEF) main settings
Parameter Function Value (Range) Step
Directional mode INTRPTEF 1=Non-directional
2=Forward
3=Reverse -
Operate delay time INTRPTEF 40...1200000 ms 10
Voltage start value (voltage
start value for transient EF) INTRPTEF 0.01...0.50 x Un 0.01
Operation mode INTRPTEF 1=Intermittent EF
2=Transient EF -
Peak counter limit (Min
requirement for peak
counter before start in IEF
mode) INTRPTEF 2...20 -
Min operate current INTRPTEF 0.01...1.00 x In 0.01
Table 38. Admittance-based earth-fault protection (EFPADM)
Characteristic Value
Operation accuracy
1) At the frequency f = f
n
±1.0% or ±0.01 mS
(In range of 0.5 - 100 mS)
Start time 2)
Minimum Typical Maximum
56 ms 60 ms 64 ms
Reset time 40 ms
Operate time accuracy ±1.0% of the set value of ±20 ms
Suppression of harmonics -50 dB at f = n x f
n
, where n = 2, 3, 4, 5,…
1) Uo = 1.0 x Un
2) Includes the delay of the signal output contact. Results based on statistical distribution of 1000 measurements.
Line Differential Protection and Control 1MRS756500 F
RED615
Product version: 4.0
38 ABB