As current flows through a conductor, it always generates heat. The greater the current flow, the hotter the conductor. When heat becomes excessive, it can damage electrical components and conductor insulation. This is why conductors have a rated continuous current-carrying capacity (“ampacity”).
Over-current protection products, such as circuit breakers, protect conductors from excessive current flow. These protective devices keep the flow of current in a circuit at a safe level, thereby preventing the circuit conductors from overheating.
The Doble TDR9000 Circuit Breaker Test System is a state-of-the-art instrument designed to test all types of circuit breakers. It permits testing up to eight breaks per phase, for a total of 24 main contacts simultaneously.
The Doble TDR9100 is an easy-to-use circuit breaker test system for accurate performance measurements with the added flexibility to double or triple your useable channels. It provides the accuracy of a laboratory instrument, but is designed for durability in the field.