Primary Circuit Breaker Test Set
PI-4000B is a versatile and technologically advanced primary injection test set capable of testing circuit breakers up to 4000 amperes frame size. It incorporates an output transformer with dual primaries to facilitate its use on power sources of 480 VAC as well as 240 and 208 VAC, and dual secondaries to provide optimal impedance matching to a wide range of breaker sizes. An internal voltage sensor automatically configures the AC control power section to be energized only when properly configured for the applied voltage.
PI-4000B is constructed in a rugged steel enclosure with removable sides and a top for easy access to internal components. The sides are clear of protruding components, and full-width handles with provisions for lifting hooks are on both ends. Locking swivel casters on all four corners provide ease of mobility. The entire test set has been designed for reliability, ruggedness, and ease of use.
Applications
This test set will test low-voltage, molded-case and metal-clad, direct-acting AC circuit breakers from various manufacturers. The test set can also be used on high current applications like ratio transformers, and heat runs.
Using SCR the PI-4000B eliminates closing time errors. Initiation at the zero crossover point eliminates DC offset in the current waveform and results in accurate, repeatable test results even with short-duration currents for high-speed solid-state or electromechanical trip devices.