The High Voltage Dielectric Loss Tester is a high-precision testing instrument used for measuring the dielectric loss tangent and capacitance of various high-voltage power equipment at power plants, substations, or in laboratories. The instrument features an integrated structure, incorporating a dielectric loss test bridge, variable frequency voltage regulating power supply, step-up transformer, and SF6 high-stability standard capacitor. The high-voltage test source is generated by the internal inverter and stepped up by the transformer for testing the specimen. The frequency can be varied to 45Hz or 55Hz, 55Hz or 65Hz, using digital notch technology to avoid interference from power frequency electric fields, fundamentally solving the problem of accurate measurement under strong electric field interference. It is also suitable for testing with generator power supply after a complete power outage. The instrument can be equipped with an insulating oil cup to test the dielectric loss of insulating oil.
Main Features
1. Large LCD Chinese display
The instrument is equipped with a large screen (105mm×65mm) Chinese menu interface, divided into left and right parts: the left side is the function menu area, and the right side provides relevant status information prompts. Each step is very clear, and operators can use it without professional training. With one operation, the microcomputer automatically completes the entire measurement process, making it an ideal dielectric loss measurement device.
2. Massive data storage
The instrument is equipped with a calendar chip and large-capacity memory, which can save test results in chronological order, allowing for viewing of historical records at any time and print output;
3. Scientific and advanced data management
Instrument data can be exported via USB drive, and can be viewed and managed on any PC using our company's dedicated software, and work reports can be generated.
4. Multiple test modes
The instrument can test using various methods including internal high voltage, external high voltage, internal standard, external standard, positive connection, reverse connection, and self-excitation method; under external standard and external high voltage, it can perform high-voltage (greater than 10kV) dielectric loss tests.
5. One-step CVT testing
The instrument can also test the dielectric loss and capacitance of fully sealed CVT (capacitor voltage transformer) C1 and C2, achieving simultaneous testing of C1 and C2. The instrument can also test CVT ratio and voltage phase difference.
6. High-speed signal sampling
The internal inverter and sampling circuit are fully digitally controlled, and the output voltage is continuously adjustable.
7. Multiple protections for safety and reliability
The instrument has multiple protection measures such as input voltage fluctuation, output short circuit, overvoltage, overcurrent, and temperature, ensuring the safety and reliability of the instrument. The instrument also has a grounding detection function to ensure that ungrounded equipment cannot be boosted.
Note: The above information and technical parameters are compiled and released by Yangzhou Darui Electric Co., Ltd.
