8.2.9 Technical dataTable 95:EF4PTOC (51N/67N) technical dataFunction Range or value AccuracyOperate current (1-2500)% oflBase ± 1.0% of In at I < In± 1.0% of I at I > InReset ratio > 95% -Operate current for directionalcomparison, Zero sequence(1–100)% oflBase ± 2.0% of InOperate current for directionalcomparison, Negative sequence(1–100)% oflBase ± 2.0% of InMin. operating current (1-10000)% oflBase ± 1.0% of In at I < In± 1.0% of I at I >InMinimum operate time for inversecharacteristics(0.000-60.000) s ± 0.5% ± 25 msTimers (0.000-60.000) s ± 0.5% ±25 msInverse characteristics, see table574, table 575 and table 57615 curve types 1) ANSI/IEEE C37.112IEC 60255–151±3% or ±40 ms0.10 ≤ k ≤ 3.001.5 x Iset ≤ I ≤ 20 x IsetMinimum polarizing voltage, Zerosequence(1–100)% ofVBase ± 0.5% of VnMinimum polarizing voltage,Negative sequence(1–100)% ofVBase ± 0.5% of VnMinimum polarizing current, Zerosequence(2–100)% ofIBase ±1.0% of InMinimum polarizing current,Negative sequence(2–100)% ofIBase ±1.0% of InReal part of source Z used forcurrent polarization(0.50-1000.00) W/phase -Imaginary part of source Z usedfor current polarization(0.50–3000.00) W/phase -Operate time, non-directionalpickup function30 ms typically at 0.5 to 2 x Iset -Reset time, non-directionalpickup function30 ms typically at 2 to 0.5 x Iset -Operate time, directional pickupfunction30 ms typically at 0,5 to 2 x IN -Reset time, directional pickupfunction30 ms typically at 2 to 0,5 x IN -1) Note: Timing accuracy only valid when 2nd harmonic blocking is turned off.1MRK 502 048-UUS A Section 8Current protection221Technical manual
