M-PRO
F-PRO
ERMLG
TESLA
S-PRO
T-PRO
B-PRO
L-PRO
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 bays)
B-PRO 4000 Multi-Busbar Protection Scheme
(Supports up to 24 bays)
Key Features & Capabilities
Low-impedance bus differential protection with advanced CT saturation detection and blocking
Independent check zone protection for additional trip security
CT open circuit detection and automatic blocking
Circuit breaker failure protection built-in
End fault (blind zone) protection for comprehensive coverage
Backup overcurrent and earth fault protection
IEC 61850 station bus integration for modern digital substation compatibility
DFR-quality fault oscillography and dynamic swing recording
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
IDEAL FOR Transmission substation engineers, grid operators, and utilities that need fast and secure busbar protection — especially in complex multi-busbar substation configurations where a false trip or missed fault would have serious consequences.