Table 33:Test points for phase-to-earth L3-E (Ohm/Loop)Test point Reach Value Comments1 X (2 x X1set+X0set)/3R 02 X (2 x X1set+ X0set)/3R 2 x R1set+ R0set)/33 X 0.8 x (2 x X1set+ X0set)/3R 0.8 x (2 x R1set+ R0set)/3+RFPEZxset4 X 0.5 x (2 x X1set+ R0set)/3R 0.5 x (2 x R1set+R0set)/3 +RFPEZxset5 X 0.85 x RFPEZxset x tan(ArgLdset) ArgLd = angle for the maximal loadtransferR 0.85 x RFPEZx6 X RLdFwset x tan(ArgLdSet)R RLdFwset7 X 0R RLdFwset8 X –02143 x RLdFwset Exact: 0.8 x RFPEZx x tan(ArgDir=20°)R 0.8 x RLdFwset9 X –0.8 x RLdFwset x tan(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 RFPEZx11.4.8.1 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 tofind the operating value of the phase-to-phase fault for zone 1 according to1MRK 505 378-UEN A Section 11Testing functionality by secondary injectionLine differential protection RED670 2.2 IEC 139Commissioning manual
