Product Introduction:
With the vigorous development of the power system, the single machine capacity of each power operating equipment in the system is increasing, and the voltage level transmitted is getting higher, which also increases the requirements for the testing equipment of the operating equipment. If conventional high-voltage testing equipment is used, the required capacity of the testing power supply and the testing equipment can reach several thousand kilovolt amperes. Due to the large capacity of the testing equipment, it is bulky and not suitable for on-site testing; Moreover, due to the large capacity of the test power supply, it is also inconvenient to find a suitable power supply on site.
The YTC850CVT series resonant withstand voltage test device is designed to meet the testing needs of large capacity, high voltage (ultra-high voltage) electrical equipment. This boosting device adopts the principle of series resonance and uses adjustable reactors to match the capacitance or compensating capacitance of the tested equipment (capacitive) to form resonance. In this way, the test power supply only bears the active component, which is only 1/Q times the required capacity of the test subject. The capacity and weight of the test equipment are greatly reduced. It is an ideal high voltage source.
The resonant boosting device can obtain the tested capacity and high voltage, which can meet the calibration error test of 110kV~330kV capacitive or electromagnetic voltage transformers. It can measure the dielectric loss tg δ of 110kV~330kV current transformers under 10kV, Um/, and Um conditions, as well as the dielectric loss tg δ of coupling capacitors under rated voltage. It can also perform power frequency AC withstand voltage tests on GIS and power transformers with voltage levels of 35kV~330kV, cross-linked cables with certain voltage levels, and other power equipment.

Product nickname:Power frequency resonance, inductive series resonance, series resonance, CVT series resonance withstand voltage test device, inductive resonance, generator withstand voltage test device

Product features:
1The output current waveform is good, and the circuit exhibits low reactance to the fundamental frequency current, while exhibiting high reactance to other harmonic currents.
2Requires a small power capacity. Due to the resonant state of the circuit, the output capacity is Q times the required power capacity, and the quality factor Q value can reach 10~80.
3No overvoltage protection is required. When the test sample breaks down and the circuit loses resonance, the reactor immediately acts to limit the short-circuit current. It will not exacerbate the damage to the test substance.
4This device is a dry-type combined series resonant device, consisting of a dry-type test transformer (excitation transformer) and multiple dry-type reactors. The reactors can be used individually or in series or parallel with multiple reactors.
5The entire equipment of this device is modular, with a small volume and light weight, making it particularly suitable for on-site use.
6The voltage regulation control box is equipped with overcurrent protection function, which is set by dialing code. When conducting experiments, first roughly calculate the required maximum low-voltage current value, and then dial the dial to the required calculated value, which is measured in amperes.
7The reactor used in this device adopts the method of adjusting the air gap to conveniently adjust its inductance value in a wide range. Therefore, when conducting power frequency withstand voltage tests, capacitors can be omitted for samples with a capacitance greater than 3000PF, greatly reducing the number of capacitors required and making the test extremely convenient.