With the vigorous development of the power system, the single-machine capacity of each power operating equipment in the system is getting larger and larger, and the voltage level of the transmission is getting higher and higher, so the requirements for the test equipment of the operating equipment are also increasing. If conventional high-voltage test equipment is used, the capacity of the required test power supply and the capacity of the test equipment are as high as several thousａnd kVA Due to the large capacity of the test equipment, for the field test, the equipment is cumbersome and unsuitable to carry ; and as the test power supply The capacity is large, and it is very inconvenient to find a suitable power supply on site.

In order to meet the test needs of large-capacity, high-voltage (ultra-high voltage) electrical equipment, this booster device adopts the principle of series resonance, and uses an adjustable reactor to match the capacitance or compensation capacitor of the device under test (capacitive) to form resonance. In this way, the test power supply only bears the active power component, which is only 1/Q times the capacity required by the subject, and the capacity and weight of the test equipment are greatly reduced. It is an ideal high voltage source.

The tested capacity and high voltage obtained by this resonant booster device can meet the verification error test of 35kV~220kV capacitive or electromagnetic voltage transformer (capacitance is 4 ~ 20nF), and can also carry out power frequency AC withstａnd voltage test on GIS (≤ 16nF) and power transformer (≤ 35nF) with 35kV~110kV voltage level.

Product Parameters

System Technical Parameters
Operating ambient temperature	-10℃~+45℃
Relative humidity	≤90%（25℃）
Working frequency	50Hz
Rated input capacity	320kVA
Rated input voltage	380V
Rated input current	50A
Rated output voltage	320kV( 8 pcs Reactors)
Rated output current	1A
Control Device Technical Parameters
Power Supply	380V/220V±10%, 50Hz
Rated Capacity	20kVA (Using 380V power input）、10kVA ( Using 220V power input )
Range of Voltage output	0~480V (Using 380V power input） 0~280V (Using 220V power input）
Excitation Transformer Technical Parameters
Voltage Input	0~450V
Voltage Output	0~10kV/20kV/30kV
Rated Capacity	10kVA
Reactor Technical Parameters
Single reactor withstａnd voltage	40kV
Single reactor capacity	40kVA
Single reactor inductance adjustment range	70H~550H
Voltage Divider Technical Parameters
Rated Voltage/ single section	160kV
Capacitance / single section	200pF
Compensation Capacitor Technical Parameters
Rated Voltage	160kV、80kV
Capacitance	5000pF、10000pF

Product Features

1.The output current waveform is good, the loop has low reactance to the power frequency fundamental current, and high reactance to other harmonic currents.

2.Small power capacity is required. Since the circuit is in resonant state, the output capacity is Q times of the required power capacity, and the quality factor Q value is >10.

3.There is no need for overvoltage protection. When the test object breaks down, the circuit will be detuned, and the reactor will immediately limit the short-circuit current. It will not aggravate the damage to the tested object.

4.The device is a dry-type combined series resonance device, which consists of a dry-type test transformer (excitation transformer) and multiple dry-type reactors. Its reactor can be used alone, but also in multiple series, parallel use.

5.The whole set of equipment of this device is combined, small in size and light in weight, especially suitable for on-site use .

6.The voltage regulation control desk is equipped with overcurrent protection function, and the overcurrent protection is set by dial code. When you do the test, first roughly calculate the required maximum low-voltage current value, and then turn the dial to the required calculated value, and its unit is ampere.

7.The adjustable reactor used in this device adopts the way of adjusting the air gap to adjust its inductance value. According to the capacitance of the tested object, air gap gaskets of different thickness are used to adjust the reactor. If the capacitance of the tested object is several fixed values, gaskets of corresponding thickness can be prefabricated to improve the test efficiency; For the test object with capacitance less than 4000pF, it is necessary to use compensation capacitance to realize resonant withstａnd voltage.

Product Video

Kvtester Electronics Technology Co.,Ltd. is a R & D, production, operating in one of the high-tech enterprises, the company is mainly engaged in high voltage test equipment, power measurement and test equipment and instrumentation, substation online monitoring system and related software products R & D, design, production, sales and service. Its predecessor, Wuhan Institute of high pressure test equipment factory was established in 1992, is one of the earliest manufacturers engaged in high-pressure test. Kvtester sincere with independent research and development and innovation ability, by virtue of solid research and development platform and professional standards in the field of power system automation and mature technology, in the full introduction on the basis of absorbing the domestic and foreign advanced technology, the success of independent research and development of transformer test equipment, transformer test equipment, secondary / switch test equipment, generator / ground test equipment, series resonant / pressure test equipment, cable / arrester testing equipment, electric energy quality / quantity inspection equipment and digital substation testing equipment eight categories a total of 100 kinds of products such as industry advanced level in the core competitiveness of products. Products are widely used in industries and fields of intelligent substation, UHV AC and DC transmission, new energy access, urban rail transportation, metallurgy, petrochemical, shipbuilding, aerospace, national defense science industry and trade, smart grid verification institutions, and with its excellent products advanced quality, subject to industry wide acclaim and attention. Also sincere Nandian joint Huazhong University of science and technology, Wuhan University and Wuhan High Voltage Research Institute, the formation of the industrial core technology research and development platform, give full play to the integrated advantage of enterprises, universities and research institutes, to establish the enterprise as the main body, the market as the guidance, the combination of technical innovation system, to accelerate the transformation of multiple projects of science and technology achievements. At present, Kvtester users throughout all the provinces, is Chinese high voltage test equipment and instruments of professional brand. Company and the national grid, the southern power grid, the five major power generation group, the city power supply company as well as PetroChina, Sinopec, China can build, iron and other large enterprise groups to establish cooperative relations. At the same time, our company actively explore overseas markets, products have been successfully exported to Mexico, Brazil, Chile, Ecuador, Indonesia, Bangladesh, Iran, India, Saudi Arabia, Mongolia, Russia, Ukraine, Vietnam, the Philippines and other 10 countries and regions, enterprise business presented the trend of rapid development. Kvtester sincere commitment to the use of professional experience in the field of measurement and control of power, to bridge the gap between the technology, allowing users to experience the high-tech, high-quality testing services; "hａnd in hａnd and, sharing a win-win". We are trying to do industry technology pioneer, meticulous build advanced products, for the Chinese wisdom can power testing equipment industry to make greater contribution. Nandian sincere sincerely welcome the full cooperation colleagues from all walks of life, hａnd in hand!