Transformer uses the principle of intergeneration.The transformer is a device that uses the principle of electromagnetic induction to change the AC voltage. The main components are primary coils, secondary coils and iron core (magnetic core).The main functions are: voltage transformation, current transformation, impedance transformation, isolation, voltage voltage (magnetic saturation transformer), etc.It can be divided into: power distribution transformers, power transformers, fully seal transformers, combined transformers, dry transformers, oil -immersed transformers, single -phase transformers, electric furnace transformers, rectifier transformers, etc.
Transformer capacity
First, the capacity of the transformer capacity define the capacity of the transformer refers to the ability of the transformer to load, which is represented by KVA.That is, under its rated voltage, these current flows through these currents, and the fever of each part of the transformer does not exceed the allowable value, which can run for a long time.For very small transformers, because the distance between the winding and the iron core cannot be reduced due to the small capacity, the leakage is large, so the transformer impedance is also large.It is already small in the magnetic flux of the work, so the impedance can be done low.
Transformer principle
The main function of the transformer is very simple, as the main role of the transformer is the transformer, that is, changing the voltage.The principle of the transformer is electromagnetic induction technology, and there are two independent coils that separate the transformer.They are called secondary coils and primary coils of the transformer.When the direction and size of the current changes over time, when the transformer is connected to the elementary connection, the iron core of the transformer produces the magnetic field of the intercourse.The level is to sensorize the AC voltage with the same frequency.The turn ratio ratio of the primary coil of the transformer is equal to the voltage ratio.The transformer can only change the AC voltage and cannot change the DC voltage, because the DC current does not change, and the current through the transformer does not produce a magnetic field of the intercourse.Voltage.
Transformer model
The model of the transformer consists of: transformer winding combination+phase number+cooling method+forced oil circulation+load or no voltage regulation+design serial number+"-"+capacity+high-voltage side rated voltage.The first letter: o represents auto -coupling; the second letter indicates the number: s is three phases, D is a single phase;; P forced oil circulation; fourth letter: indicate the number of winding groups, the double winding group does not standard; s is a three -winding group; f is a division winding; the fifth letter: indicates that the wire material L is aluminum line, the copper wire is not marked; the sixth is not marked; sixthThis letter: It means that the pressure regulation method is loaded, and there is no label;
Dry transformer
Dry transformers are widely used in local lighting, high -rise buildings, airports, pier CNC mechanical equipment and other places. Simply speaking, dry transformers refer to transformers that are not impregnated with iron cores and windings in insulation oil.The cooling method is divided into natural air cooling (an) and forced air cooling (AF).When naturally air -cooled, the transformer can run continuously for a long time under the rated capacity.When the wind is cold, the transformer output capacity can be increased by 50%.It is suitable for disconnected overload operations, or an overload operation of emergency accidents; due to the increase in load loss and impedance voltage increase during overload, and in non -economic operation, it should not be allowed to run for a long time.I. Structural type Structure Performance ⑴ Among the two windows of solid insulation and packaging winding winding ⑵ not packaging winding winding winding, high voltage is high -voltage winding, and the lower low -voltage winding is from the relative position of the high and low voltage winding.Tongxin cross -level concentric windings are simple and convenient for manufacturing. This structure is adopted.The cross -type, mainly used for special transformers.
Transformer manufacturer
Transformer manufacturer ranking dry -type transformer output 1 China Electric Electric Group Co., Ltd.Co., Ltd. 1037 Shandong Luneng Taishan Electric Equipment Co., Ltd. 88.618 Shandong Dachi Electric Co., Ltd.
Transformer price

Related tags： Machinery