Profile: Electrical Test Instruments, LLC specializes in manufacturing, calibration & repair of electrical test equipment and mechanical measuring instruments. We are an ISO 9001:2015 certified company. Our PI-6000 is a injection test set capable of testing circuit breakers up to 6000 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 & 208 VAC, and dual secondaries to provide optimal impedance matching to a wide range of breaker sizes. Our PI-6000 is constructed in a rugged steel enclosure with removable sides and 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 castors on all four corners provide ease of mobility.