BE1-25, Sync-Check Relay

This relay monitors the voltages on both sides of a circuit breaker and determines the existence of proper phase angle and voltage before allowing the breaker to close.


  • Accurate, repeatable, and reliable operation.
  • Minimized PT costs as a result of low sensing burden.
  • Reduced battery load with low burden power supply.
  • Simple HMI provides clear and intuitive settings for easy configuration without the use of a computer.
  • Integrated voltage monitor provides complete supervision for conditions such as dead bus, where sync-check alone is not sufficient to supervise the breaker closing.
  • LED indicators provide clear annunciation of status.
  • Easily perform in-case system and device tests using test paddles.


Technical Resources


Case Studies