
Circuit Breaker Test System
TDR900 - Doble Engineering
The TDR900 is your entry-level portable circuit breaker test set.It operates and records a circuit breaker's contact timing, motion, velocity, main contact engagement & synchronization, trip and close coil initiation and currents.Use the TDR900 to verify control circuit, check motion of moving parts, validate time of operation and demonstrate results of circuit breaker maintenance.