TEST-750 single phase relay test set is a portable relay test unit, high performance, operation simply, portable designed to test in the field; it adopts aluminum alloy body with PC panel, robust shape; microcomputer with the 32bit ARM chip control, LCD screen display single-phase protective relay test device of voltage and current output stopwatch; a full isolation, adjustable AC and DC voltage, AC direct current; an adjustable DC voltage and an adjustable AC voltage; output circuit with double overload protection, high output capacity, small size, light weight, high reliability. The equipment is suitable for a variety of relay field calibration and performance test. So this model relay test set is a good ideal tool for power engineering company to test over-current relay and over-voltage relay