Mention of high-voltage transformers, the first reaction is not familiar with it, certainly the structure of the high-voltage transformer is even more ignorant, but we will know that the high-voltage transformer is an indispensable and important machine in life. High-voltage transformer is a kind of electromagnetic induction will be transformed into a high-voltage transformer, in medical applications such as X-ray machines, high potential therapeutic instrument, etc., not only that, in printing, electrostatic treatment is also widely used, microelectronics electrostatic removal, air purification, fume exhaust treatment, etc. naturally, high-voltage transformers, then, you are familiar with the structure of the high-voltage transformer, so that the editorial staff to explain the structure of high-voltage transformer. The structure of the transformer.
The structure of the high-voltage transformer is very simple, the internal structure is mainly composed of iron core, primary winding group and secondary winding group, do not look at only a small three internal parts, the role of the role is very large. High-voltage transformer core is generally made of silicon steel sheet. Silicon steel is a kind of steel containing silicon, its silicon content in 0.8 ~ 4.8%. The core of the transformer is made of silicon steel because silicon steel itself is a kind of magnetic material with strong magnetic conductivity, and it can produce large magnetic induction intensity in the energized coil, which can reduce the size of the transformer. The main role of the iron core is the high-voltage transformer in the AC state work, power loss is not only in the resistance of the coil, but also produced in the core under the magnetization of the alternating current. Iron core is mainly composed of iron core body, fasteners and insulation. The role of the small iron core is not small oh.
Next let me tell you what is the primary winding group, what is the secondary winding group it. In the high-voltage transformer connected to the power supply winding called the primary coil, the rest of the winding called the secondary coil, the coil is also referred to as the line group. The main role of the line group is when the primary side of the winding through the alternating current, the transformer began to produce alternating magnetic field, through the alternating magnetic field of the induction effect, the secondary winding is also corresponding to the alternating magnetic field and produce alternating current electromotive force, the secondary winding voltage and the secondary winding of the number of turns than the relationship between the number of turns, i.e., the voltage is proportional to the number of turns.
In addition to the above three high-voltage transformer internal structure, the next high-voltage transformer external structure, the external structure of the transformer oil, oil tank and cooling device, voltage regulator, protection devices and temperature measurement devices and outlet casing. The protective devices include moisture absorbers, safety airways, gas relays, oil storage cabinets and so on.
High voltage transformer performance requirements:
Temperature rise: high-voltage transformer in the ambient temperature of 40 ℃ and the rated load under continuous operation, measured by resistance method of winding temperature rise shall not exceed 65 ℃, in this condition operation, the upper layer of the temperature rise of the insulating oil thermometer. Shall not exceed 60 ℃, the highest temperature rise part of the winding shall not exceed 80 ℃.
Rated capacity: high voltage transformer in the full capacity of the lowest tap position full load operation, the temperature of the windings shall not exceed the provisions of the manual.
Impedance: The impedance of a high-voltage transformer at rated voltage tap and converting winding temperatures to 75, based on cold rated capacity, shall be in accordance with paragraph 2.1.4.
Short-circuit criteria: The short-circuit resistance of high-voltage transformers shall be in accordance with ANS?C57.12.
Overloading criteria: The transformer shall be capable of withstanding loads in excess of the nameplate rating.
Radio Interference Voltage Criteria: High frequency voltages generated by the transformer shall not exceed NEMA?TR1.
High-voltage transformer regulator:
1, medium-voltage line-end regulation
2, line-end regulation insulation can not be resolved, regulator R & D difficulty, the neutral point voltage regulation, that is, in the process of regulating medium-voltage voltage changes, the low-voltage side of the fluctuations with the flux changes, the setup of compensating windings to address Setting the compensation winding to solve the low voltage fluctuation in the process of voltage regulation.
3, no-load voltage regulation mode, at the same time, in order to simplify the structure of the main transformer, the regulator winding is installed in a separate box and the main transformer box body isolation, through the casing and the living side of the electrical connection.
Use:
High-voltage transformers are electronic products commonly used in electronic equipment, is used to convert low-frequency low voltage to low-frequency high voltage electromagnetic induction equipment. When the primary side of the winding through the alternating current, the transformer generates alternating magnetic field, through the alternating magnetic field of the induction effect, the secondary winding is also corresponding to the alternating magnetic field and produce alternating current electromotive force, the secondary winding voltage is high or low with the secondary winding turns ratio, that is, the voltage is directly proportional to the number of turns, high voltage, the main role of the main low voltage converted into the required high voltage in the production process of the production of insulation is particularly important, a lot of manufacturers of Unqualified product quality is mainly reflected in the insulation treatment, good insulation is a high-voltage transformer production of the top priority.
For electronic products require high-voltage transformers are divided into the following categories:
(1) medical equipment? such as X-ray machines, high potential therapeutic instrument?
(2)Printing, electrostatic treatment?
(3)Microelectronic electrostatic removal?
(4)Air purification, oil smoke exhaust treatment, etc..
High-voltage transformers are not widely used, so there are not many manufacturers, such as the domestic Guangzhou Ruijia Electronics, Baochang Tianwei, Shuntian Group, Satons and so on.
Have you ever felt that the high-voltage transformer is very magical it, the internal structure through a small three parts can be realized from low pressure to high pressure process, I hope that you keep in mind the internal structure of the high-voltage transformer as well as the external structure of oh. And I also know that our country in the transformer industry is mainly to high-pressure, ultra-high voltage and energy-saving, miniaturization of the two directions, high-pressure, ultra-high voltage direction is mainly used in long-distance transmission lines, energy-saving, miniaturization of the direction of the main application of the city's transmission lines. So it can be seen that the future of the high-voltage transformer industry is still very bright.
Tuba Rabbit online free of charge to provide everyone with "each decoration offer, 1-4 local decoration company, 3 sets of decoration design program", and decoration to avoid pit strategy! Click on this link:/yezhu/zxbj-cszy.php?to8to_from=seo_zhidao_m_jiare&wb, you can get it for free Oh~