Products Multi Function Protection Relays


B-PRO Bus Protection Relays

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.

B-PRO 4000 Bus Protection Relay (Supports up to 6 busbars)
B-PRO 4000 Bus Protection Relay
(Supports up to 6 bays)
B-PRO 4000 Multi-Busbar Protection Scheme (Supports up to 24 busbars)
B-PRO 4000 Multi-Busbar Protection Scheme
(Supports up to 24 bays)


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
  • Flexible Communications

    • State-of-the-art communications to accommodate the industry’s latest network-based communications
    • Ethernet ports with 2 unique MAC addresses that easily accommodate network access security needs
  • Substation Automation

    • IEC 61850 Station Bus on dedicated optical/copper Ethernet ports included at no extra cost
    • Enhanced DNP3.0 Level 2 SCADA communication protocol including user-selectable point lists, class support and multiple master station support
  • Easy to Use

    • User-friendly, Windows®-based relay setting and record analysis software
    • Flexible programmable logic for building customized schemes with ProLogic™ statements – 24 control logic statements (total of 192 statements)



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Winnipeg, Canada