GE Multilin B90 Low Impedance Bus Protection System

Multilin B90

Low Impedance Bus Protection System

The Multilin B90 bus protection relay, a member of the UR Family, features integrated protection and breaker failure for re-configurable MV, HV, EHV multi-section busbars with up to 24 feeders. Use one or more B90 relays together to build a flexible protection system that can be engineered to meet specific application requirements. The B90 performs fast and secure low-impedance bus protection with a sub-cycle tripping time of 0.75 cycles and 06 differential zones per phase.

Key Benefits

High-speed protection algorithm for enhanced stability with trip times of 0.75 power cycle with CT saturation detector that operates with only 2 msec of saturation-free current

Superior CT saturation detector that operates with only 2 msec of saturation-free current

Suitable for different bus configurations, scalable architecture to protect up to 24 feeders

Advanced IEC61850 Ed. 1 and Ed. 2 certified implementation and complete setting in a single SCL file ensures interoperability, device management optimization and reduced cost of ownership

Routable GOOSE (R-GOOSE) enables GOOSE messages going beyond the substation

Advance Cyber security features “CyberSentryTM” that helps meet modern industry requirements

Integrated isolator position monitoring, alarming and dynamic bus replica

Application flexibility with multiple I/O options including high density I/O, programmable logic, modularity, and specific customization

An integrated large, full color display, provides real-time visualization and control of the protected bay, via a bay mimic as well as annunciator functionality and graphical visualization of phasors

Applications

Single bus, breaker-and-half busbar configurations, double Bus and triple Bus with and without bus couplers

Re-configurable multi-section busbar with up to 24 feeders