Current protection relay B-PRO

EthernetIECprogrammable

The B-PRO relays provide low impedance differential protection for any bus bar configuration with CT saturation security, integrated breaker failure, overcurrent protection and SCADA control in a fully integrated solution. The B-PRO also provides control, automation, metering, monitoring, and high quality fault oscillography and sequence of events logging. Application in B-PRO 4000 Bus Protection Relay • Simple bus applications with up to 6 feeders and 2 differential zones with breaker failure, or 4 feeders and 1 transformer, including separate full transformer differential protection (87T) • 1 or 2 separate differential zones - bus and transformer or Bus 1 and Bus 2 for multiple buses Application in Multi-Busbar Protection Scheme • Applications for bus configurations for up to 24 feeders Protection for 3 differential zones and a check zone. • Scalable architecture allows flexibility to use the most cost effective hardware combinations, based on the actual number of zones and number of current inputs in the bus system • Dynamic zone selection (including fixed zones) and Selective Bus Tripping based on Isolator status Common Features and Benefits • Functional Specific • Delta Phase and Rate of Change of Differential (ROCOD) algorithms provide enhanced security during external faults with heavy CT saturation • Protection functions include IEEE devices 87B, 27, 59, 60, 81, 50LS, 50BF, 50/51/67, 50N/51N/67, 46/50/51/67 • Backup overcurrent and breaker failure protection for each input current • High quality fault recording capabilities and event log