IEC 60-1: 1989 High Voltage Testing Techniques Part I: General Test Requirements
DLT 848.1-2004 General Technical Conditions for High Voltage Test Apparatus Part 1: DC High Voltage Generator The DC High Voltage Generator makes DC High Voltage test realize high quality, portable and able to withstand the rated voltage discharge without damage. DC high voltage generator has many protection functions, such as: low voltage overcurrent, low voltage overvoltage, high voltage overcurrent, high voltage overvoltage, zero protection, not grounded protection, etc.. Intelligent DC high-voltage generator using fault sampling special sensors, action time for nanoseconds, optical isolation elements are also nanoseconds, action time is generally 10 microseconds can completely shut down the main DC circuit. Push the signal fast shutdown protection in the output side using a special sensor sampling, reaction time of nanoseconds, through the nanosecond optical isolation elements and nanosecond analog switch, the whole process in 2 microseconds to cut off the amplifier circuit to push the signal to ensure that in the case of output short-circuit, do not damage the power device. It refers to the high-voltage power supply mainly used in insulation and leakage detection, and now there is no strict difference between high-voltage power supply and high-voltage generator. DC high voltage generator is the first in the industry to adopt sectionalized structure, that is, it can be used for both high voltage level and lower voltage level and keep its accuracy unchanged. Take 100/200kV/2mA divided into two sections as an example, a single section can do 100kV/2mA use, can be used for 35kV and the following system of electrical equipment DC high-voltage test, at this time to ensure that the accuracy of the measurement to avoid the big horse-drawn cart; two sections of the use of 200kV/2mA can be done. It can be used for 220kV section, 110kV and below zinc oxide lightning arrester DC test and cross-linked cable DC withstand voltage test. It can be used for two purposes in one machine, which is very convenient for users on the spot. It is mainly used for researching the insulation strength of DC precision power and converter station equipment and insulating materials of electrical equipment under DC high voltage, corona and ionic current and its effect of DC power line, as well as conducting leakage current test of AC and DC power equipment. In addition, they can be used as a power source for other high-voltage test equipment, such as shock voltage generators, shock current generators and oscillation loops. They are also widely used in other fields of science and technology, such as physics (gas pedals, electron microscopes, etc.), electronic medical equipment (X-rays), industrial applications (exhaust gas precipitation, electrostatic spraying, etc.), or electronic communications (television and radio stations).
ZGF DC High Voltage Generator adopts medium frequency rectification and filtering technology, which solves the shortcomings of industrial frequency DC high voltage generator with large ripple coefficient and unstable waveform. The product meets the requirements of the newly promulgated national electric power industry standard ZGF24003-90 "DC High Voltage Generator General Technical Conditions DL/T 848.1-2004", and is widely used for DC withstand voltage test and leakage current test of electrical equipment, and specially set up the function of testing zinc oxide lightning arrester voltage U1mA under 1mA and 0.75U1mA under leakage current. Leakage current function. The latest research, design, manufacture of new science and technology products, applicable to the power sector, factories and mines power sector, scientific research units, railroads, chemical industry, power plants, etc. zinc oxide lightning arrester, magnetic blowing arrester, power cables, generators, transformers, switches and other equipment for DC high-voltage test, is the new century the most ideal replacement product.
VLF 0.1HZ ultra-low frequency high-voltage generator is combined with modern digital frequency advanced technology, using microcomputer control. VLF 0.1HZ UHV generator is controlled by microcomputer. Boosting, bucking, measuring and protection are fully automated. And in the automatic boosting process can be manual intervention. As a result of all-electronic. It can be widely used in the AC withstand voltage test of cable, rotating motor and power capacitor.
ZGF digital DC high-voltage generator adopts the new technology, new materials and new devices in the nineties, with high output power, small volume, light weight, reliable over-voltage, over-current and zero-closing protection, with 0.75 times the voltage locking function, and equipped with a time relay, can be set up during the test timed acoustic alarm. The whole instrument is portable, easy to operate, safe and reliable, especially suitable for power sector field test.