Test point Reach Value Comments7 X 0R RLdFwset8 X –02143 x RLdFwset Exact: 0.8 x RFPE x tan (ArgDir=20°)R 0.8 x RLdFwset9 X –0.8 x RLdFwset xtan(ArgDir=20°)R 0.8 x RLdFwset10 X 0.17 x (2 x X1set + X0 set) Exact: 0.5 x (2 x X1set X0 set)/3R -0.36 x (2 x X1set + X0set) Exact: 0.5 x (2X1set + X0set)/(3 xtan(AgNegDir=30°)11 X 0.27 x (2 x X1set+X0set) Exact: 0.8 x (2 x X1set + X0set)/3R –0.57 x (2 x X1set + X0set) Exact: 0.8 x (2X1set + X0set)/(3 xtan(AgNegDir=30°)12 X 0.5 x (2 x X1set + X0set)/3R 0.5 x (2 x R1set + R0set)/313 X 0R RFPE12.4.8.1 Measuring the operating limit of set values GUID-24FEBCE7-3409-4204-AA15-A1E0A1605866 v3Procedure:1. Subject the IED to healthy normal load conditions for at least two seconds.2. Apply the fault condition and slowly decrease the measured impedance to find theoperating value of the phase-to-phase fault for zone 1 according to test point 1 infigure 45 and table 29. Compare the result of the measurement with the set value.3. Repeat steps 1 to 2 to find the operating value for test points 2, 3 in table 29.Observe that the zones that are not tested have to be blocked and the zone that is testedhas to be released.4. Repeat steps 1 to 3 to find the operating value for the phase-to-earth fault L3-E accordingto figure 46 and table 30.Test points 8, 9, 10 and 11 are intended to test the directional lines ofimpedance protection. Since directionality is a common function for all sixmeasuring zones, it is only necessary to test points 8, 9, 10 and 11 once, inthe forward direction in order to test the accuracy of directionality(directional angles). Directional functionality testing (trip inside, no-tripoutside) should always be made for all impedance zones set withdirectionality (forward or reverse).12.4.8.2 Measuring the operating time of distance protection zonesGUID-70AEC42A-9BC7-445A-AE21-2CEC0C3A79DC v3Procedure:1MRK 502 067-UEN B Section 12Testing functionality by secondary injection125Commissioning manual
