VLF Hipot Test Set

High voltage test of electrical equipment is one of the most important items stipulated in Insulation Preventive Test. Voltage test can be divided into AC voltage test and DC voltage test. Ac voltage test can be divided into power frequency test, frequency conversion test and 0.1Hz ultra-low frequency test technology, among which 0.1Hz ultra-low frequency test technology is the latest technology and recommended by the International Electrotechnical Commission. According to the actual situation of the electric power system in our country, the National Development and Reform Commission has formulated the industry standard of "Test Method for Ultra-low frequency (0.1Hz) Voltage Resistance of crosslinked polyethylene insulated Power cable in 35kV and Below". In 2004, the power industry standard of "General Technical Condition DL/T 849.4-2004 of Ultra-low frequency High Voltage Generator" was promulgated. This latest test method is being promoted in my country.

In the large and medium-sized generators, motors, power cables and other test products for power frequency voltage test, because their insulation layer shows a larger capacity, so the need for a large capacity of the test transformer or resonant transformer. Such huge equipment, not only bulky, high cost, and very inconvenient to use. In order to solve this contradiction, it is widely used in the world to reduce the test frequency, so as to reduce the capacity of the test power supply. Ultra-low frequency insulation voltage test is actually an alternative method of power frequency voltage test. From years of theory and practice at home and abroad, it has been proved that 0.1Hz ultra-low frequency voltage test instead of power frequency voltage test, not only can have the same equivalence, but also the volume of the equipment is greatly reduced, the weight is greatly reduced, the theoretical capacity is about 500% of power frequency, and the operation is simple, which is the main reason why developed countries generally adopt this method.

Our company's new generation of ultra-low frequency high voltage generator is the core product of independent research and development using the latest technology, using 7 inch touch screen, imported high-speed AD acquisition circuit, and advanced production technology. Improve the quality and stability of the instrument, reduce the volume and weight of the equipment, simple operation, overcome many shortcomings of similar domestic products, cost performance is much higher than similar imported products of mechanical booster short service life, high failure rate, large volume shortcomings. Compared with other voltage test equipment, 0.1Hz ultra-low frequency has many advantages.

Through years of practice, a large number of users' feedback shows that: this series of ultra low frequency and high voltage technology market leader, the highest cost performance!

Product nickname: Ultra-low frequency high voltage generator, 0.1Hz ultra-low frequency high voltage generator, programmed ultra-low frequency high voltage generator, ultra-low frequency AC high voltage test device, ultra-low frequency voltage withstand test device