Research on Non-contact Voltage Measurement Technology

In order to measure the line voltage value and distinguish whether the line is induced voltage or working voltage, this paper designs a non-contact high-voltage electroscope based on the space electric field effect. It is designed as a split structure consisting of a receiving end and a transmitting end, regardless of the height of the test line to the ground, without the need for a grounding line. The highvoltage electroscope is designed from three aspects: structure, circuit and program. Finally, the performance of each module is tested under laboratory conditions and the test results are analyzed. It basically meets the design requirements and test needs.