Laminated for transformer voltage device and rated power

- Jun 24, 2019-

The lamination for transformer is a device that uses the principle of electromagnetic induction to change the alternating voltage. The main components are the primary coil, the secondary coil, and the iron core (magnetic core). The main functions are: voltage conversion, current conversion, impedance transformation, isolation, voltage regulation (magnetic saturation transformer) and so on. According to the application, it can be divided into: power transformer and special transformer (electric furnace change, rectification change, power frequency test transformer, voltage regulator, mine change, audio transformer, intermediate frequency transformer, high frequency transformer, impact transformer, instrument transformer, electronic transformer , reactors, transformers, etc.).

Lamination for transformer In order to reduce the eddy current and hysteresis loss in the iron, the core is laminated by a lacquered silicon steel sheet, and there is no electrical connection between the two coils, and the coil is wound by an insulated copper wire (or aluminum wire). One coil is connected to the AC power source called the primary coil (or the primary coil), and the other coil is called the secondary coil (or the secondary coil). The actual transformer is very complicated, and copper loss (coil resistance heat generation), iron loss (core heat generation), and magnetic flux leakage (air-closed magnetic induction line) are inevitably present.

Lamination for transformer rated power

At a specified frequency and voltage, the transformer can operate for a long period of time without exceeding the output power of the specified temperature rise.

Lamination for transformer rated voltage

Refers to the voltage that is allowed to be applied to the coil of the transformer and must not be greater than the specified value during operation.

Lamination for transformer ratio

Refers to the ratio of the primary voltage to the secondary voltage of the transformer, which has the difference between the no-load voltage ratio and the load-to-voltage ratio.

Lamination for transformer idle current

When the secondary of the transformer is open, there is still a certain current in the primary. This part of the current is called no-load current. The no-load current consists of magnetizing current (generating magnetic flux) and iron loss current (caused by core loss). For a 50 Hz power transformer, the no-load current is substantially equal to the magnetizing current.