By hvhipot 
The AC series resonance under HV Hipot Electric Co., Ltd. can help many power workers conduct various power tests more conveniently.
The phenomenon where the voltage at the circuit end is in phase with the total current in a series circuit of resistors, inductors, and capacitors is called series resonance. The characteristics of series resonance are: the circuit is a pure resistor, the terminal voltage is in phase with the total current, the reactance X is equal to 0, and the impedance Z is equal to the resistance R. At this point, the impedance of the circuit decreases and the current increases, which may generate high voltages several times the power supply voltage on the inductors and capacitors. Therefore, series resonance also becomes voltage resonance.
The performance characteristics of series resonance are as follows:
1. Easy to operate: automatic testing (automatically finding resonance points, automatic boosting) and manual testing (manually finding resonance points, manual boosting) to adapt to different testing requirements.
2. Test voltage, frequency range, protection current, and pressurization time can be set.
3. Automatic mode: simply set the test voltage and time; The equipment automatically and accurately adjusts the frequency and voltage; Complete the test and save the data.
4. It has grounding and flashover protection functions. If the resonant circuit suddenly loses resonance due to sample flashover or other reasons, the variable frequency control power supply will automatically and quickly cut off the output, and display the protection type and flicker voltage value;
5. Automatically track changes in grid voltage, adjust voltage in real-time, and maintain high voltage stability.
6. Reactors of the same voltage level and capacity are small in size and light in weight, with low rated load temperature rise, dry-type epoxy casting, high mechanical strength, good electrical insulation performance, and beautiful and reliable appearance.
7. The variable frequency power supply control box has a large capacity margin, strong protection function, good output waveform, and is compatible with single-phase 220V or three-phase 380V input power supply, making it convenient for on-site power supply.
8. Flexible configuration: The reactor can be used in series/parallel to meet the requirements of different test objects, achieving multi use and high cost-effectiveness.