The transformer consists of an iron core and a coil. The transformer coil is divided into a primary coil and a secondary coil. When the primary coil is energized, the transformer core generates an alternating magnetic field, and the secondary coil induces an alternating current with the same frequency as the primary. The turns ratio of the transformer coil is equal to the voltage ratio.
Transformers can not only step-down but also step-up, long-distance power transmission generally uses transformers to increase the voltage, and then use the transformer to reduce the voltage to the voltage we need.
There are many types of transformers(buy power transformer). Each type of transformer has different uses. List the main uses of several types of transformers:
Isolation transformer: for electrical isolation. In addition to protecting equipment, you can also protect personal safety! Isolate dangerous voltages. Avoid some accidents.
The isolation transformer output and input capacitance coupling are small, and it has a more restraining effect on the interference caused by lightning, discharge, grid switching, motor startup, and other grid noise. It is a relatively effective power supply noise suppressor. From this point of view, the isolation transformer is more effective in protecting equipment.
The role of step-down transformers and step-up transformers is: voltage conversion, increase or decrease of voltage.
A power transformer is a stationary electrical device that is used to change a certain value of AC voltage (current) into another or several voltages (current) with the same frequency. Power transformers are one of the main equipment in power plants and substations.
The low-voltage line is relatively long and the line resistance is relatively large; the low-voltage load is relatively large, and the line voltage drop is increased than usual; the power factor of the electrical equipment is relatively low, which increases the line voltage drop; the transformer capacity is small, resulting in a low secondary output voltage of the transformer.