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Working principle of three-phase isolation transformer

Yixing Xingyi Special Transformer Co., Ltd. is a professional manufacturer of designing and manufacturing isolation transformers. Yixing Xingyi Special Transformer Factory has been rated as a star enterprise by the provincial and municipal governments for many years. Products with high quality, reasonable price, and excellent service are well received by users. The shopping malls cover major mining areas across the country and have a good reputation for shopping malls.

Three-phase isolation transformerWorks

The three-phase isolation transformer uses a three-phase dual-winding structure, which has the characteristics of anti-lightning and anti-disturbance. Each winding of the primary and secondary sides is divided into two coils. The two coils are wound with two layers of mutually insulated metal foil. Therefore, there is a capacitor C (ie, a capacitive isolation transformer) between the two coils.

The principle of an isolation transformer is almost the same as that of a general transformer, and both use the principle of electromagnetic induction. Isolation transformers generally refer to 1: 1 transformers. Because the secondary is not connected to ground, there is no potential difference between any secondary line and ground. It is safe to use and is often used as a maintenance power source.

Isolation transformers are not all 1: 1 transformers, and the power supply for controlling transformers and electronic tube equipment is also isolation transformers. Power sources such as tube amplifiers, tube radios, oscilloscopes, and lathe control transformers are isolation transformers. For example, isolation transformers that are commonly used 1 than 1 for safe maintenance of color TVs are used more often. Is also used.

Generally, although there is an isolation circuit between the primary and secondary windings of the transformer, at higher frequencies, the capacitance between the two windings will still cause electrostatic disturbance between the two circuits. In order to prevent this kind of disturbance, the primary and secondary windings of the isolation transformer are generally placed on different cores to reduce the capacitance between the two; there are also choices where the primary and secondary windings are placed concentrically, but between the winding Electrostatic shielding to obtain high resistance to disturbance.