Chess Electric

Engineered solutions for connecting, monitoring, protecting power systems and critical equipment.


Phone: 1-877-400-0106

B30 Bus Differential System

Cost-effective, low-impedance, biased bus differential protection for up to six feeders
The B30 features integrated protection, control and metering for MV, HV and EHV busbars, providing cost-effective, feature-focused busbar protection. Use the B30 to protect busbars with up to 6 feeders with up to two three-phase differential zones. The B30 is a cost-effective alternative to high-impedance schemes, ideal for breaker-and-half bus schemes, with integrated feeder backup protection and metering.

B30 Bus Differential System

Key Benefits

  • High speed differential protection algorithm for sub-cycle trip times of 0.75 power cycle
  • Advanced IEC61850 Ed. 2 implementation, complete settings via SCL files and IEC 61850-9-2 process bus solution enable resource and platform managing optimization and reduce cost of ownership
  • Superior CT saturation detection with only 2 msec of saturation-free current for enhanced through-fault stability
  • Ambient temperature monitoring with alarms when temperature exceeds upper thresholds
  • Cost-effective alternative
  • Advanced automation capabilities for providing customized protection and control solutions