Variable Frequency Series Resonance Complete Test Device
DARUI Electric recommends:
The variable frequency series resonance test device operates on the principle of series resonance. By adjusting the output frequency of the variable frequency controller, the inductance L of the reactor in the circuit and the capacitance C of the test object undergo series resonance, and the resonance voltage is the voltage applied to the test object.
Technical Features
1. One of the few in the country to pass the strict type test appraisal by the national authoritative department - the Electric Power Industry Electrical Equipment Quality Inspection and Testing Center (Wuhan High Voltage Research Institute), ensuring reliable quality and the safety of test personnel, test objects, and test equipment itself;
2. Small size and light weight, especially suitable for on-site use;
3. Flexible setting of test voltage, frequency range, and pressurization time;
4. Equipped with a computer communication interface for convenient communication and test data management;
5. High resolution, with a frequency resolution of 0.001 Hz;
6. Meets national standard requirements: has peak monitoring/√2 function, can monitor test waveforms in real time;
7. Comprehensive and reliable protection against overvoltage, overcurrent, discharge, overheating, and zero-start, with an action time of 1 microsecond;
8. The device comes with a built-in micro printer for timely printing and saving of test data;
9. Designed with military-standard vibration resistance and dust prevention, capable of withstanding long-distance transportation and harsh usage environments;
10. One-key mouse-style knob "foolproof" operation, with a large-screen LCD displaying test data and status, and real-time operation step prompts;
11. Unique software calibration function, convenient for users to calibrate meters, ensuring the accuracy of high voltage values;
12. All major components are imported from world-renowned enterprises, including Texas Instruments and Intel from the United States, Siemens and Schneider from Germany, and Toshiba and Fuji from Japan.
Main Applications
1. AC withstand voltage test for 6kV-500kV high-voltage cross-linked cables
2. AC withstand voltage test for generators
3. AC withstand voltage test for GIS and SF6 switches
4. Power frequency withstand voltage test for 6kV-500kV transformers
5. AC withstand voltage test for other high-voltage power equipment such as busbars, bushings, and instrument transformers.
◆The series resonance device is widely used in power, metallurgy, petroleum, chemical, and other industries, suitable for capacitive test objects with large capacity and high voltage, such as generators, transformers, GIS, high-voltage cross-linked cables, instrument transformers, bushings, etc., for commissioning tests and preventive tests.
Note: The above information and technical parameters are compiled and released by Yangzhou DARUI Electric Co., Ltd.
