Author: Doris Chan

Transformers convert alternating current energy into different voltages, currents, and other parameters using the principle of electromagnetic induction. In oil-immersed transformers, the iron core and windings are immersed together in insulating oil to improve insulation, cooling, and heat dissipation.

The area of the window and the cross-sectional area of the bracket are the main dimensions of the transformer, whose product is proportional to its size and weight.In general, the larger the product, the larger and heavier the transformer will be.

The magnetostrictive effect is one of the main causes of transformer noise. When a magnetic field is applied to ferromagnetic materials, their size changes. Power transformers have iron cores that are magnetically attracted to alternating current flowing through their coils. Creating a buzzing sound, it expands and contracts the core.

An inductor is an essential component of any circuit. To make a circuit work, it supplies the necessary voltage. It is necessary for the generation of current and the operation of power sources. Inductor structure is similar to that of a transformer, but with only one winding. The inductance of an inductor is determined by its resistance to current flow changes only.

Transformer oil and components will change in color and smell if there is a fault inside the transformer or if it is overheated. The following are some common faults:
1. A loose casing terminal or a slippery lead wire nose can seriously oxidize the contact surface, overheat the contact, cause the color to darken, tarnish, and damage the surface coating.
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Transformers are static electrical devices.An electromagnetic induction device converts a certain level of AC voltage and current into another level of voltage and current at the same frequency. Transforming AC voltage, exchanging AC current, and transforming impedance is its main function. Leakage current is the tiny induced current generated around the insulating material by the electric field force, and it is commonly expressed in microamps.

For voltage transformation, transformers use the electromagnetic principle of “electricity generates magnetism, and magnetism generates electricity.”