Timer characteristics............................................................ 502Measurement modes............................................................505Application............................................................................505Signals..................................................................................507Settings................................................................................ 507Monitored data..................................................................... 508Technical data...................................................................... 509Third harmonic-based stator earth-fault protection H3EFPSEF 509Identification......................................................................... 509Function block...................................................................... 510Functionality......................................................................... 510Analog channel configuration............................................... 510Operation principle............................................................... 511Application............................................................................514Signals..................................................................................520Settings................................................................................ 520Monitored data..................................................................... 521Technical data...................................................................... 522Multifrequency admittance-based earth-fault protectionMFADPSDE...............................................................................522Identification......................................................................... 522Function block...................................................................... 522Functionality......................................................................... 522Analog channel configuration............................................... 524Operation principle............................................................... 524Application............................................................................551Signals..................................................................................552Settings................................................................................ 553Monitored data..................................................................... 554Technical data...................................................................... 554Differential protection......................................................................554Line differential protection with inzone power transformerLNPLDF.....................................................................................554Identification......................................................................... 554Function block...................................................................... 555Functionality......................................................................... 555Analog channel configuration............................................... 555Operation principle............................................................... 556Commissioning.....................................................................576Application............................................................................582Signals..................................................................................587Settings................................................................................ 588Monitored data..................................................................... 590Technical data...................................................................... 591Table of contents18 REX640Technical Manual