8.3 Instantaneous residual overcurrent protectionEFPIOC IP14508-1 v38.3.1 IdentificationM14887-1 v4Function description IEC 61850identificationIEC 60617identificationANSI/IEEE C37.2device numberInstantaneous residual overcurrentprotectionEFPIOCIN>>IEF V1 EN-US50N8.3.2 Functionality M12701-3 v16The Instantaneous residual overcurrent protection (EFPIOC) has a low transientoverreach and short tripping times to allow the use for instantaneous earth-faultprotection, with the reach limited to less than the typical eighty percent of the lineat minimum source impedance. EFPIOC is configured to measure the residualcurrent from the three-phase current inputs and can be configured to measure thecurrent from a separate current input.8.3.3 Function block M12614-3 v6EFPIOCI3P*BLOCKBLKARENMULTTRIPIEC06000269-3-en.vsdxIEC06000269 V3 EN-USFigure 81: EFPIOC function block8.3.4 Signals IP11448-1 v2PID-6915-INPUTSIGNALS v4Table 76:EFPIOC Input signalsName Type Default DescriptionI3P GROUPSIGNAL- Three phase currentsBLOCK BOOLEAN 0 Block of functionBLKAR BOOLEAN 0 Block input for auto recloseENMULT BOOLEAN 0 Enable current multiplier1MRK 505 394-UEN A Section 8Current protectionLine differential protection RED650 2.2 IEC 179Technical manual
