Local HMI................................................................................................77Display...............................................................................................77LEDs..................................................................................................79Keypad.............................................................................................. 80Local HMI functionality...................................................................... 82Protection and alarm indication.................................................... 82Parameter management ..............................................................83Front communication.................................................................... 83Single-line diagram.......................................................................84Section 6 Current protection................................................................87Instantaneous phase overcurrent protection 3-phase outputPHPIOC (50)...........................................................................................87Identification...................................................................................... 87Application......................................................................................... 87Setting guidelines.............................................................................. 88Meshed network without parallel line............................................88Meshed network with parallel line.................................................90Four step phase overcurrent protection 3-phase output OC4PTOC(51/67).................................................................................................... 92Identification...................................................................................... 92Application......................................................................................... 92Setting guidelines.............................................................................. 93Settings for steps 1 to 4 ...............................................................942nd harmonic restrain...................................................................96Instantaneous residual overcurrent protection EFPIOC (50N)............. 102Identification.................................................................................... 102Application....................................................................................... 102Setting guidelines............................................................................ 102Four step residual overcurrent protection, zero, negative sequencedirection EF4PTOC (51N/67N)............................................................. 106Identification.................................................................................... 106Application....................................................................................... 106Setting guidelines............................................................................ 108Settings for steps 1 and 4 ..........................................................109Common settings for all steps.................................................... 1102nd harmonic restrain.................................................................112Line application example1.......................................................... 112Sensitive directional residual overcurrent and power protectionSDEPSDE (67N)...................................................................................118Identification.................................................................................... 118Table of contents3Application manual
