Bus Protection Relay Type By Easun Reyrolle Ltd.

We are involved in manufacturing and supplying of Bus Protection Relay Type in Hosur, Tamil Nadu, India. B-PRO 8700 provides bus and substation differential protection (low impedance) with CT saturation security, integrated breaker failure and overcurrent protection with, DFR quality fault oscillography and dynamic swing recording, sequence of events logging, SCADA control and metering in a fully integrated protective relay solution.

Protection
6 sets of CT inputs for differential protection (18 currents) using percentage slope characteristic for security on external faults. Low impedance design allows different CT ratios for each of the 6 inputs
Backup overcurrent and breaker failure for each input current. User defined directional control of overcurrent functions for networked lines. Apply 3 phase voltages to apply over/under voltage and frequency functions.
Protection functions include IEEE devices 87B, 27, 59, 60, 81, 87T, 50LS, 50BF, 50/51/67, 50N/51N/67, 46/50/51/67
1 or 2 separate differential zones - bus and transformer or Bus 1 and Bus 2 for multiple buses
ProLogic - control logic statements
Recording, Monitoring and Metering