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 SpecificDelta 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 CommunicationsState-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 AutomationIEC 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 UseUser-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)
The B-PRO 4000 Multi-Busbar relay provides protection for any bus bar configuration with 3 differential zones and a check zone. Its 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. For example, protection for 23 feeders plus one bus tie breaker can be provided using four B-PRO 4000 relays communicating with each other.
The B-PRO 4000 Multi-Busbar system provides current differential bus protection, circuit breaker failure protection, end fault protection, backup over current protection, independent check zone, open CT and advanced saturation detection for EHV bus-bars. It provides control, automation, metering, monitoring, fault oscillography, event logging, and dynamic swing recording, with advanced communications in a flexible cost effective package.
Easy to use, intuitive setting and analysis software
Dynamic Bus Replica
Integrated Breaker Fail Protection with single phase initiation, End Zone Protection and Over Current Protection for each input current
Isolator and CB status monitoring and alarming
Delta Phase and Rate of Change of Differential (ROCOD) algorithms provide enhanced security during external faults with heavy CT saturation
Use 1 x B-PRO 4000 relay for every 6 x 3-phase CT inputs configured for the bus differential element
High quality fault recording and event log
