Control transformers are used by enterprises to increase the voltage of three-phase systems. Incoming line reactors, also known as phase-shifting reactors, can limit current surges caused by sudden voltage changes and operating overvoltage in the power grid, effectively protecting terminal electrical equipment, suppressing radio interference, and improving power factor. Control transformers are used to change AC voltage settings and are composed of a core and coils. They can not only change AC voltage but also alter impedance and, without exceeding the design power, can also change current. Control transformers are used in series with the input and output of inverters, serving as input and output line reactors for inverters, reducing harmonics generated during inverter operation. Control transformers are specialized equipment with excellent anti-static isolation effects.
1. Consider the Requirements
Whether or not it is a control transformer, its working principle is to change AC voltage using electromagnetic induction. Although three-phase transformers and ordinary transformers have some similarities, it is necessary to know which transformer is more suitable for actual purchase.
2. Consider the Materials
It is important to look at the advantages and disadvantages of the equipment, the manufacturing process, and the choice of materials. For example, check the insulation varnish on the transformer. The quality of the insulation varnish has a significant impact on the moisture resistance and insulation of the entire transformer.
3. Consider the Manufacturer
Sometimes the manufacturer itself is synonymous with product quality. Finding a reliable manufacturer is almost half of the success. A good transformer manufacturer can be judged mainly by industry reputation, after-sales service, and product quality.
