R type transformer active power problem solution!

Sometimes we get inquiries from customers. In the process of communicating with them, we usually find that some people do not know what the active power and reactive power of the transformer are, and do not know what the difference is between the two. Today, small r will take you to understand what the active power and reactive power of r type transformers are, so that you can avoid pits when choosing transformers.

In daily work, in AC circuits, the power of the power supply load is divided into two kinds: one is active power, and the other is reactive power. In general, active power is the electrical power required to maintain the normal operation of electrical equipment, that is, the conversion of electrical energy into other forms of energy. Now reactive power is more abstract, it is mainly used for the exchange of electric and magnetic fields in circuits, and is used to establish and maintain magnetic fields in electrical equipment. Usually he does not do external work, but is converted into other forms of energy, all electrical equipment with electromagnetic coils, need to establish a magnetic field, but also need to consume reactive power.

Reactive power as we know it is not really useless power, in fact, it is very useful, usually when the motor needs to establish and maintain a rotating magnetic field, in order to make the rotor rotate, drive the mechanical motion. At this time, the rotor magnetic field of the motor is established by obtaining reactive power from the power supply. The transformer also requires reactive power to generate a magnetic field in the primary coil of the transformer and to induce a voltage in the secondary coil. Therefore, the motor does not rotate without reactive power, and the transformer cannot change voltage without reactive power.

Therefore, in our daily work, electrical equipment not only needs to get active power from the power supply, but also needs to get reactive power from the power supply. When reactive power in the grid is in short supply, electrical equipment does not have enough reactive power to establish a normal electromagnetic field. As a result, the electrical equipment cannot be maintained at the rated working state, and the terminal voltage of the electrical equipment will drop, thus affecting the normal operation of the equipment.