2-2 L90 Line Current Differential System GE Multilin2.1 INTRODUCTION 2 PRODUCT DESCRIPTION2Figure 2–1: SINGLE LINE DIAGRAMTable 2–2: OTHER DEVICE FUNCTIONSFUNCTION FUNCTION FUNCTIONBreaker Arcing Current (I 2 t) FlexElements™ (8) OscillographyBreaker Control FlexLogic™ Equations Pilot Scheme (POTT)Contact Inputs (up to 96) IEC 61850 Communications (optional) Setting Groups (6)Contact Outputs (up to 64) L90 Channel Tests Stub BusControl Pushbuttons Line Pickup SynchrophasorsCT Failure Detector Load Encroachment Time Synchronization over SNTPData Logger Metering: Current, Voltage, Power,Energy, Frequency, Demand,Power Factor, 87L current,local and remote phasorsTransducer Inputs/OutputsDigital Counters (8) User Definable DisplaysDigital Elements (48) User Programmable LEDsDirect Inputs (8 per L90 comms channel) Modbus Communications User Programmable PushbuttonsDisconnect Switches Modbus User Map User Programmable Self-TestsDNP 3.0 or IEC 60870-5-104 protocol Non-Volatile Latches Virtual Inputs (64)Event Recorder Non-Volatile Selector Switch Virtual Outputs (96)Fault Locator and Fault Reporting Open Pole Detector VT Fuse Failure831706AT.CDRL90 Line Differential Relay52Monitoring CLOSE TRIPData from/to remote end(via dedicated communications) MeteringFlexElementTM Transducerinputs50DD 51N(2)50N(2)67P(2)87L 21P 68 7850BF(2)51_2(2)51P(2)50_2(2)7950P(2) 21G67N/Q27P(2)27X59N59X59P25(2)51G(2)50G(2)32N(2)
