Transformer Manufacturers Talk About The Classification Of Transformers

Transformers are one of the common parts in life, and many devices have the shadow of transformers. Transformers are insufficient, and many equipment in life cannot work normally. It is mainly a device that uses the principle of electromagnetic induction to change the AC voltage, and the main components are primary coils, secondary coils and iron cores (cores). The main functions include voltage conversion, current conversion, impedance conversion, isolation, voltage regulation (magnetic saturation transformer). In order to improve the understanding of transformers, this article transformer manufacturers share the classification of transformers.
Transformer manufacturers talk about the classification of transformers:
(1) Power transformer
Typical products currently in operation on the system are 1150KV, 1200MVA, 735-765kV, 800MVA, 400-500kV, three-phase 750MVA or single-phase 550MVA. Dc transmission 500KV, 400MV A reflux transformer. Power transformers are mainly oil etched, and the product structure has two kinds of deep type and shell. Core production is only 95%, Shell only 5%. The core and shell do not have an overwhelming advantage over each other, but the core is relatively simple and therefore adopted by most enterprises. The shell structure and process are more complex, which is only used in traditional factories. Shell especially high voltage, large capacity, insulation, machinery, heat are all advantages, suitable for mountain hydropower station transportation.
Power transformer is one of the main equipment in power plants and substations. The role of the transformer is not only to increase the voltage in many ways, to send power to the electrical area, but also to reduce the voltage to all levels of use voltage to meet the power demand. In short, transformer manufacturers believe that both boost and buck should be completed with transformers. Power system in the process of transmitting power, there will be two parts of the loss of voltage and power, in the transmission of the same power, the voltage loss is inversely proportional to the voltage, the power loss is inversely proportional to the square of the voltage. The transformer is used to increase the voltage and reduce the transmission loss.
(2) Distribution transformer
A distribution transformer is a static electrical device in a distribution system, which is used to transfer alternating current by converting alternating voltage and current according to the law of electromagnetic induction. The capacity of foreign distribution transformers can reach 2500KV A, with round and oval core forms. The circle is the vast majority, the oval is M0(the spacing of the core column) is small, so the material is reduced, and the corresponding coil is oval. The low pressure coil consists of a wire and foil, and the tank has a hair tube (a few) and a wave type (most).
(3) Dry-type transformer
The dry-type transformer is mainly composed of an iron core composed of silicon steel sheets and an epoxy resin injection coil, an insulation cylinder is placed between the high and low voltage coils to increase electrical insulation, and is composed of a liner support and a restraint coil, whose components overlap fasteners all have broadcast performance. Transformer manufacturers believe that there are four structures: injected epoxy, injected filler, wrapped and impregnated. Dry transformers are often used in places with high performance requirements such as fire prevention and explosion prevention because of strong short-circuit resistance, less maintenance, high operating efficiency, small size and low noise.