Identification.............................................................................. 152Application................................................................................. 152Setting guidelines...................................................................... 153Settings for each step...........................................................155Setting example....................................................................158Instantaneous residual overcurrent protection EFPIOC ................ 163Identification.............................................................................. 163Application................................................................................. 163Setting guidelines...................................................................... 163Directional residual overcurrent protection, four steps EF4PTOC .166Identification.............................................................................. 166Application................................................................................. 166Setting guidelines...................................................................... 168Common settings for all steps.............................................. 1692nd harmonic restrain...........................................................170Parallel transformer inrush current logic...............................171Switch onto fault logic...........................................................172Settings for each step (x = 1, 2, 3 and 4)............................. 173Line application example......................................................175Thermal overload protection, one time constant, Celsius/Fahrenheit LCPTTR/LFPTTR.........................................................180Identification.............................................................................. 180Application................................................................................. 180Setting guideline........................................................................ 181Breaker failure protection CCRBRF............................................... 182Identification.............................................................................. 182Application................................................................................. 182Setting guidelines...................................................................... 183Pole discordance protection CCPDSC........................................... 186Identification.............................................................................. 187Application................................................................................. 187Setting guidelines...................................................................... 187Section 9 Voltage protection........................................................ 189Two step undervoltage protection UV2PTUV ................................189Identification.............................................................................. 189Application................................................................................. 189Setting guidelines...................................................................... 190Equipment protection, such as for motors and generators...190Disconnected equipment detection...................................... 190Power supply quality ........................................................... 190Voltage instability mitigation................................................. 190Backup protection for power system faults...........................190Settings for two step undervoltage protection...................... 191Table of contents4 Line differential protection RED650 2.2 IECApplication manual
