The role of rectifier transformer and its performance characteristics

2022-11-29 17:32:35

63次

The rectifier transformer is simply a power transformer in the rectifier equipment. The so -called rectifier is to enter all the current. The rectifier transformer is widely used in lighting, mechanical electronic equipment, medical equipment, etc., which has the powerful effects that other transformers do not have, bringing irreplaceable help to many fields. Next, let's talk about its specific role and performance characteristics together.

1、 Function:
The main purpose of the transformer is the transmission and distribution system. The high -voltage electrical transmission can not only reduce the cross -sectional area of the transmission line, save the introduction of human material materials, but also reduce the power loss of the transmission line. The transformer can also be used to change the current transformation impedance and generate pulse variable flow. It is the general term of the three working methods of rectification, reverse flow, and frequency conversion. The rectification is the most widely used in it.
(1) The electrochemical industry is the industry with the most rectification. The electrolyte metal metal compound is used to make aluminum, magnesium, copper and other metals; electrolytic salt to make chlorine -alkali; electrolytic water to make hydrogen and oxygen.
(2) DC power grid for the DC power supply for mining or urban electric locomotive. Due to the airline side of the valve side, there are many short -circuit faults, and the DC load changes have a large radiation degree, and the motor vehicles often start, resulting in a short -term overload of varying degrees. To this end, the temperature rise limit and current density of these transformers are low. The impedance is about 30%larger than the corresponding power transformer.
(3) DC power supply for transmission is mainly used to power the DC motor in the power transmission, such as the electric and inspiration of the steel rolling machine.
(4) DC transmission.
Another important role is to protect personal safety isolation dangerous voltage. Isolation means that the transformer's original auxiliary edge around the coil is electrical insulation. The isolation of the transformer is the current of the original auxiliary edge of the coil. There are many types of isolation. For the common transformers of low -voltage, the main is the insulating paint outside the metal around the coil, and then the original auxiliary edge around the coil around a gate to form a transformer. Many people are called "lacquer wires" for many people used in this transformer around the coil. The reason is that layer of insulation paint. At this time, the original auxiliary side rely on that layer of paint, that is, isolation. Auto -coupled transformers are applied in cases where primary and secondary isolations are not required, and have the advantages of small size, small consumables, and high efficiency.

2、Performance characteristics:
(1) Stability of electrical performance: Products combine load characteristics and power grid voltage fluctuations, and atmospheric overvoltage conditions, according to the load conditions of the rectifier transformer, determine a reasonable and reliable insulation level and insulation model to fully ensure that the product's electrical performance is reliable and stable. Product environmental safety factor ≥1.67.
(2) High degree of dynamic stability: The product winding has a high mechanical strength and has a strong anti -sudden ability to meet the extremely harsh load environment. In the process of design and manufacturing, it is better to eliminate the source of unstable dynamic instability caused by transformer leakage or non -normal transportation. The product has high dynamic stability. High resistance is 30%higher than the impedance of the power transformer with the same capacity to inhibit DI/DT and effectively protect the rectifier element.
(3) Good thermal stability: Advanced product design, strictly control the thermal parts and the hottest temperature of the product, and leave sufficient temperature rise. The load loss value is selected and the oil flow is reasonably allocated to achieve the best cooling effect. The main temperature upgrade indicators are at least 5 ° C lower than that of the national standard. The coils and leads are bronze guide lines, and the current density is selected low.
(4) Strong overload capacity: The product has strong overload capacity and overvoltage capacity, which can run safely for a long time under the rated load. It can be safely operated safely for a long time under 110%overvoltage (40 ° C of the ambient temperature); The terminal connected by the transformer and the motor can withstand 1.5 times the rated current, which takes 5s. Product design and manufacturing fully consider the load characteristics, and meet the overload requirements from all aspects such as temperature rise, insulation performance and attachment selection.

(5) Excellent performance indicators: The national standard value of the same capacity S9 series transformers is based on the design and manufacturing value of the air -load current, which is based on the economy and reliability used by users.
(6) The effect of power saving is obvious, and the noise is low (<65dB).
(7) The structure is simplified and the shape is beautiful; the fuel tank adopts the anti -leakage design process, which can prevent the leakage of the fuel tank.

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