GROUND FAULT PROTECTION SYSTEM

摘要

A ground fault protector for use with an A. C. electrical power distribution system and particularly suited for operation at current levels in the range of 150 to 1,200 amperes. A ground fault protector for sensing fault current in the ground strap and tripping the circuit breaker switch to open the power lines. A magnetically operated reed switch mounted at the ground strap and a solid state circuit actuated by reed switch closure to energize the breaker trip coil, with current sensitivity provided by an adjustable mounting for the reed switch, eliminating adjustment in the electronics.