BASLER BE1-25 SYNC-CHECK-RELAY SOLID-STATE SYNCHRONISM CHECK RELAY T268895

The Basler Electric BE1-25 is a solid-state, microprocessor-based sync-check relay that ensures safe circuit breaker closure by verifying that voltage, frequency, and phase angle differences between two power sources are within user-defined limits. It monitors bus and line voltages to prevent damage during paralleling. It measures the angle between these voltages and ensures it is less than the front-panel setting (adjustable from 1 to 99 degrees). It typically requires a signal from the breaker's 52b auxiliary contact to enable or terminate its close signal.