Products

BE1-87B, High Impedance Bus Differential Relay

Provides economical high-speed protection in a conventional package for high-impedance differential applications.

Benefits

  • Proven high-impedance differential provides optimum speed and selectivity.
  • Space and cost-saving configurations available featuring a single-phase S1 case, a three-phase M1 case, and a three-phase 19" rack-mount case.
  • Easily verify external wiring and prevent misoperation with the CT Circuit Diagnostic function and Steady-State Unbalance alarm.
  • Two timing options are available. Each includes a jumper-selectable instantaneous or intentional time delay.
    • Timing Option A1: The instantaneous jumper position provides fastest tripping. The 20 millisecond intentional delay jumper position prevents tripping for short duration faults within the zone of protection that is protected by a high speed fuse.
    • Timing Option A2: The instantaneous jumper position provides fastest tripping. The 2 millisecond intentional delay jumper position prevents nuisance tripping for very short duration faults such as nearby lightning strikes.
  • Reduced battery load with low burden power supply.
  • Easily perform in-case system and device tests using test paddles.
  • Available as a plug-n-play retrofit for GE PVD21B or PVD21D differential voltage relays. Fits into an existing M1 GE PVD case. Request Basler part number 9282300111.

Bulletins

Technical Resources

Applications