What is power transformer?
- Transformer working principle and detailed introduction
the first thing to know transformer function, in fact, its no more than voltage conversion; impedance conversion; isolation; voltage stabilization (magnetic saturation transformer), etc., transformers commonly used core shape generally have E-type and C-type core. It is a simple principle, but according to different occasions (different uses) transformer winding process will be different requirements. Power transformers are widely used.
- Transformers can be divided into according to use:
Distribution Transformer, Power Transformer, Fully Sealed Transformer, Combined Transformer, Dry Type Transformer, Single Phase Transformer, Furnace Transformer, Rectifier Transformer, Reactor, Anti Transformer, Lightning Protection Transformer, Pad mounted Transformer .
- The most basic type of transformer consists of two sets of coils wound with wires and inductively bonded to each other. When an alternating current (with a known frequency) flows in one set of coils, an alternating voltage with the same frequency will be induced in the other set of coils, and the magnitude of the induced voltage depends on the degree of coupling of the two coils and the degree of magnetic crosslinking.
2.The coil connected to the AC power supply is generally called the "primary coil"; and the voltage across this coil is called the "primary voltage...". The voltage across this coil is called the "primary voltage...". The voltage induced in the secondary coil may be greater or less than the primary voltage, which is determined by the "turns ratio" between the primary and secondary coils. Therefore, there are two types of transformers: step-up and step-down transformers.
- Most transformers have a fixed iron core on which the primary and secondary coils are wound. Due to the high permeability of the iron material, most of the magnetic flux is confined to the core, so that the two sets of coils can be magnetically coupled to a fairly high degree. In some transformers, the coils are so closely coupled to the core that the ratio of the primary and secondary voltages is almost the same as the turns ratio of the coils. Therefore, the turns ratio of the transformer can generally be used as a reference index for transformer step-up or step-down. Because of this step-up and step-down function, making the transformer has become one of the important appendages of the modern power system, enhance the transmission voltage makes the long-distance transmission of electricity more economical, as for the step-down transformer, it makes the use of electricity more diversified
