GE / Alstom B90 Bus Differential System

Comprehensive and scalable bus and breaker fail protection for LV, HV and EHV busbars. The GE Alstom B90 Relay B90, a member of the UR family, features integrated protection and breaker failure for re-configurable simple or complex LV, HV, EHV multi-section busbars schemes of up to 24 feeders and 6 diff zones.
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.

GE Alstom B90 Relay Key Benefits

? High-speed protection algorithm for enhanced stability with trip times of 0.75 power cycle
? Superior CT saturation detector that operates with only 2 msec of saturation-free current for enhanced through-fault stability
? 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, which enables wide area protection and control applications
? Use high-speed communications to reduce wiring and installation costs
? Robust network security enabling Critical Infrastructure Protection through user command logging, and dual permission access control
? Integrated isolator position monitoring & alarming
? 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

We offer GE?s century long tradition of power system innovation. From generators to transmission lines, to motors and beyond, we ensure dependable, safe power worldwide. GE offers a wide range of single function and auxiliary relays, along with a portfolio of accessories, to support high performing and reliable protection and control systems. To explore the GE portfolio with us click here GE numerical Relays !