Test point Reach Value Comments9 X –0.8 x RLdFwset x tan(ArgDir=20°)–0.8 x RLdFwdset 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 RFPEZx11.4.7.1 Measuring the operating limit of set values GUID-3FA4B640-38E7-406E-8FCC-8DEDABB024C4 v4Procedure: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 totest point 1 in figure 33 and table 30. Compare the result of the measurementwith the set value.3. Repeat steps 1 to 2 to find the operating value for test points 2, 3 in table 30Observe that the zones that are not tested have to be blocked and the zone thatis tested has to be released.4. Repeat steps 1 to 3 to find the operating value for the phase-to-earth fault L3-E according to figure 34 and table 31.Test points 8, 9, 10 and 11 are intended to test the directionallines of impedance protection. Since directionality is acommon function for all six measuring zones, it is onlynecessary to test 8, 9, 10 and 11 once, in the forward directionin order to test the accuracy of directionality (directionalangles). Directional functionality testing (trip inside, no-tripoutside) should always be made for all impedance zones setwith directionality (forward or reverse).11.4.7.2 Measuring the operating time of distance protection zonesGUID-BB93C603-F43E-40CB-8EFA-3B0F280C011D v5Procedure:Section 11 1MRK 504 165-UEN ATesting functionality by secondary injection132 Transformer protection RET670 2.2 IECCommissioning manual
