Power transformer is a kind of stationary electrical equipment

Power transformer is a kind of stationary electrical equipment, which is used to change the AC voltage (current) of a certain value into another or several different values of voltage (current). Farady power transformer is including 50kva power transformer,100kva power transformer and so on.
The primary and secondary coil of the common transformer is concentric placed on an iron core column, and the inner is a low voltage winding, and the outer winding is a high voltage winding. (the primary and secondary coils of the welding machine transformer are respectively installed on two iron core columns).
When the transformer is running with load, when the secondary side current increases, the transformer should maintain the main magnetic flux in the iron core unchanged, the original side current must also increase accordingly to achieve the balance of the secondary side current.