The XZB series variable frequency series resonance consists of a variable frequency power supply, excitation transformer, reactor, capacitive voltage divider, and compensation capacitor (optional). The capacitor and reactor of the test sample form a series resonant connection; The voltage divider is connected in parallel to the test sample to measure the resonant voltage on the test sample and provide an overvoltage protection signal; The frequency modulation power output is coupled to the series resonant circuit through an excitation transformer, providing excitation power for series resonance. The variable frequency series resonance test device applies the principle of series resonance, uses an excitation transformer to excite the series resonance circuit, adjusts the output frequency of the variable frequency controller, and causes the circuit inductance L and the test sample C to resonate in series. The resonance voltage is the voltage applied to the test sample. The frequency conversion resonance test device is widely used in industries such as power, metallurgy, petroleum, and chemical engineering, and is suitable for the handover and preventive testing of high-capacity, high-voltage capacitive specimens.

The complete set of frequency conversion series resonance test equipment is mainly designed for AC withstand voltage testing of cross-linked cables, hydroelectric generators, main transformers, busbars, GIS, etc. It has a wide range of applications and is an ideal withstand voltage equipment for high voltage testing departments and power installation and maintenance engineering units at the prefecture, city, and county levels.

Product nickname: AC voltage withstand resonance device, variable frequency resonance, variable frequency series resonance, series resonance, series resonance transformer, electrical equipment variable frequency series resonance voltage withstand device, series resonance test equipment, variable frequency series resonance test complete set device.

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1. Cables with voltage levels of 35kV and below are widely used and require a large amount of testing work. Therefore, this type of voltage withstand test device is small in size and light in weight, giving rise to portable cable voltage withstand test systems;

2. This system requires that the weight of components that can be moved on-site by a single person should not exceed 30kg, and the weight of components that can be moved on-site by two people should not exceed 60kg, which is suitable for on-site handling;

3. The power supply adopts 220V single-phase power supply or 380V single power supply, which is convenient for on-site power supply. The reactor part adopts dry-type epoxy casting, which is beautiful and reliable, suitable for the requirements of various cables;

4. Oil immersed reactors are used for the withstand voltage test of cables with voltage levels of 110kV and above. When the individual weight exceeds 100kg, our company's dedicated small electric crane can be optionally equipped;

5. Simple operation, small size, light weight, very convenient for on-site use and handling (volume and weight are about 1/10 to 1/30 of traditional test transformers;

6. Unique low harmonic patented technology, with a measured harmonic content of less than 0.3% at Wuhan High School, far below the national standard requirement of no more than 5%, greatly protecting equipment such as main transformers and generators from high-voltage harmonic damage;

7. Verified by a third-party authority;

8. Compliant with national standards, it has peak monitoring function and can monitor high-voltage test waveforms in real time. It has low requirements for on-site power supply and good test equivalence;

9. Large LCD screen, "foolproof" and easy-to-use, with a built-in micro printer for printing and saving test data at any time;

10. Reactors of the same voltage level and capacity have smaller volume and lighter weight; Low temperature rise at rated load; Adopting dry casting, high mechanical strength, good electrical insulation performance, beautiful and reliable;

11. The variable frequency power supply control box has a large capacity margin; Strong protection function; Good output waveform; Good stability; Having multiple working modes and easy operation; Single phase 220V or three-phase 380V input power supply is universal, convenient for on-site power supply;

12. Flexible configuration. Different types of reactors can be selected to meet the requirements of different test samples, achieving multi-purpose and high cost-effectiveness;