P12x/EN T/Eb6 - Schneider - error

P12x/EN FT/Eb6Page 42/62User GuideMiCOM P120/P121/P122/P123AUTOMAT. CTRLBlocking LogicHeading of the Blocking Logic submenu.Block FunctionNoEnables or disables blocking logic of the function on thelevel (logic state =1) of logic input “Block Logic”Refer to previous table for protection functions list.2.9.4 Inrush Blocking Logic submenu (P122 and P123 only)Through the Inrush Blocking Logic submenu, the user can set a 2 nd harmonic blocking thresholdand block each delayed overcurrent threshold by setting . MiCOM P122 & P123 relays have thesubmenu Inrush Blocking available for setting.It is possible to enable or disable the “blocking” of most protection functions even if a logicinput has been assigned to that function. Blocking of a protection function can be preventedif “No” is selected in the relevant window (see below). Blocking of a protection function canbe enabled if “Yes” is selected in the relevant window.Function P122 P123 INFORMATION and COMMENTSI> X X Instantaneous first phase overcurrent thresholdI>> X X Instantaneous second phase overcurrent thresholdI>>> X X Instantaneous third phase overcurrent thresholdIe> X X Instantaneous first earth overcurrent thresholdIe>> X X Instantaneous second earth overcurrent thresholdIe>>> X X Instantaneous third earth overcurrent thresholdIe>>>> X X Instantaneous derived earth overcurrent threshold.I2> X X Instantaneous first negative phase sequence overcurrentthresholdI2>> X X Instantaneous second negative phase sequenceovercurrent thresholdAUTOMAT. CTRLBlocking InrushHeading of the Inrush Blocking logic submenu.Blocking InrushYesInr. Harmonic 2 Ratio =20%Setting choice Yes: The crossing of the Harmonic H2ratio threshold on any phase activates the InrushBlocking Logic function instantaneously.Setting choice No: The crossing of the Harmonic H2 ratiothreshold doesn’t activate the Inrush Blocking logicfunction.Set the value for the 2 nd harmonic threshold ratiocalculated as a percentage of the fundamentalcomponent from 10 to 35% (step 0.1%). Press tovalidate your choice.