Basic knowledge of rated capacity of power transformers

The main function of the transformer is to transfer electrical energy, therefore, the 100kva distribution transformer rated capacity is the main parameters of the transformer. The nominal capacity of the transformer is a nominal value of the power of the performance. It is the magnitude of the transmitted energy, expressed in kVA or MVA, and is used to determine the rated value of the temperature rise limit under the specified conditions when the rated voltage is applied to the transformer Current. conventional pole transformer capacity size and voltage level is also closely related. Voltage is low, the capacity is large, the current is large, loss increases; high voltage, capacity, insulation ratio is too large, the transformer size relative increase, therefore, low voltage capacity will be small, high voltage capacity will be large. The rated capacity of the two-winding transformer is the rated capacity of the winding. (Due to the high efficiency of the transformer, usually the rated capacity of the primary and secondary sides is designed to be equal).