Clamp current sensor is a high-precision AC current convector. It adopts the latest CT technology and is designed with a large-diameter circular structure. It can be used for quick and easy free access. The compact size is easier to carry and use. Applicable to AC current, high harmonic current, phase, electric energy, power, power factor and other tests.It can be used with a variety of measuring instruments, such as: Field calibrator for watt-hour meter, harmonic analyzer, recorder, multi-function energy meter, oscilloscope, digital multimeter, cable identification, cable fault detector, double clamp grounding resistance Testers, double-clamp phase volt-ampere meters, etc., can measure and compare various electrical parameters under constant power. Widely used in substations, power plants, industrial and mining enterprises and testing stations, electrical maintenance departments for current detection and field electrical work.