What are the commissioning methods of the transformer
Time:2022-12-13
Views:196
High voltage transformer is a commonly used electronic equipment for electronic products, which is used to convert low frequency low voltage into low frequency high voltage electromagnetic induction equipment. When the primary winding passes through the alternating current, the transformer generates an alternating magnetic field. Through the induction of the alternating magnetic field, the secondary winding also correspondingly generates an alternating magnetic field to generate an alternating electromotive force. The voltage of the secondary winding is related to the turn ratio of the secondary winding, that is, the voltage is proportional to the turns. The main role of the high voltage is to convert the low voltage into the required high voltage. Insulation is particularly important in the production process, The unqualified product quality of many manufacturers is mainly reflected in the insulation treatment, and good insulation is the top priority in the production of high-voltage transformers.
There are two voltage regulation modes of transformer: on load voltage regulation and off load voltage regulation.
On load voltage regulation means that the transformer can adjust the tap position of the transformer during operation, thereby changing the transformer ratio to achieve the purpose of voltage regulation. There are two modes of on load voltage regulating transformer: line end voltage regulating and neutral point voltage regulating, that is, the difference between the transformer tap at the line end side of the high voltage winding or the neutral point side of the high voltage winding. Tapping at the neutral side can reduce the insulation level of the transformer tap, which has obvious advantages, but requires that the neutral point of the transformer must be directly grounded during operation.
On load voltage regulation and no-load voltage regulation, the on load tap changer is the tap changer of the transformation transformer under load to achieve the purpose of voltage regulation. During non excitation voltage regulation, it is not the secondary transformer without load, but disconnect each side of the transformer from the grid, and change the tap joint of the winding when the transformer is not excited. On load voltage regulation and no-load voltage regulation, the on load voltage regulation is generally 19 gears, 1.25% for each gear, and 1.5% or 2.5% for each gear. The transformer needs to be stopped for no-load voltage regulation and not used for on load voltage regulation.
The rated voltage range of transformer off circuit tap changer is narrow and the regulating stages are few. The rated voltage regulating range is expressed as ± 5% or ± 2% of the rated voltage of the transformer × 2.5％。
Generally, large power transformers use on load tap changer, while small distribution transformers are generally no-load.
The above is the explanation of the commissioning method of the transformer. Do you understand it after reading it? I hope it will be helpful to you.
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