Circuit Breaker Test  Equipment

Field-portable instruments with standalone or PC controlled functionality, allow performing various tests during circuit breaker manufacturing, commissioning and maintenance stages.

  • Contact resistance
  • DRM (dynamic resistance measurement)
  • Coil resistance and coil current (IEC 62271-100)
  • Mechanism charging time (IEC 62271-100)
  • Minimum trip voltage (IEC 56, ANSI C37.09)
  • Undervoltage release (IEC 60694)
  • The timing of a circuit breaker’s main, auxiliary and pre-insertion contacts
  • Synchronization between the contacts
  • Motion and velocity
  • “First trip” test