Numerical Single Pole Tx. Differential Relay : ADR213BGeneral DescriptionADR213B second generation Numerical Transformer Protection Relay for Traction Application. It consist all the necessary protection and monitoring functions required for traction feeder.Disturbance Recorder. 50 cycles of actual waveform of currents (45 pre-fault & 5 post fault) are captured & saved in the built-in memory with date time stamping, for analyzing fault. Separate Communication Ports for SCADA (RS485) as well as Local testing (RS232C) Fully communicable with IEC standard open protocol. Very low burden on CT (less than 0.5VA). Online display of Primary current i.e. load current and unbalance current. Continuous monitoring of module’s internal hardware and alarm generation in case of failure of any critical components. Large 20x4 LCD display for Parameter and setting display Facility to synchronised Relay time with external GPS network. 10 Digital Output contacts for local alarm as well as tele-signalling. 9 Optically isolated digital status input for monitoring of status and avoid used of external relay logic. 100 nos of event memory, event such CB close, Trip, digital status change, relay pkp etc. All events are with date and time stamped up to 1ms.Specially designed for Traction OHE Protection. As per RDSO specs TI/SP/PSI/PROTCT/4050. Dual Slop characteristic for excellent through fault stability. Operation based on fundamental frequency value. Harmonics Restrain for Tx charging and CT saturation condition. Instantaneous Differential Current Protection.