When partial discharge occurs, physical phenomena such as ultrasonic waves, heat, light, and magnetism are generated, among which ultrasonic waves propagate outward in the form of spherical waves centered on the sound source. The HD9002 High Voltage Switchgear Partial Discharge Tester uses the received ultrasonic signals generated by partial discharge to determine the existence and location of partial discharge, and combined with real-time displayed images and data, quickly diagnoses the partial discharge condition. This locator integrates two detection methods: transient earth voltage and ultrasonic.
II. Functional Features
● Ultrasonic and TEV partial discharge waveforms are on the same interface as the yellow, green, and red three-level warning values, a domestic first.
● Using dBmV as the unit, the transient earth voltage (TEV) method is used to detect the magnitude of partial discharge;
● Adopts a color LCD screen, providing a more intuitive and user-friendly display;
● Adds headphone monitoring mode, allowing real-time monitoring of partial discharge signals through headphones in ultrasonic mode;
● The display can show waveforms in real time and store valuable waveforms; test data is automatically stored, facilitating test record review and subsequent analysis of test data;
● High signal amplification and sensitivity; signal reception range: effective distance 30m;
● Moderate intensity red laser aiming, strong focusing capability, accurate positioning, safe and reliable, simple and practical;
● Detects and locates insulator discharge on towers, creepage on exposed cable heads, and partial discharge in underground cables;
● Detects partial discharge in high voltage switchgear;
● Easy to use, small size, light weight, and portable.
III. Technical Specifications
3.1 TEV Performance Parameters
l Sensor: capacitive;
l Measurement range: -5 to 60dB, step 1dB ;
l Resolution: 1dB.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
