High voltage transformers convert voltages from one level or phase configuration to another, usually from higher to lower. They can include features for electrical isolation, power distribution, and control and instrumentation applications. This kind of transformer design depends on the principle of magnetic induction between coils to convert voltage and/or current levels. What is a high voltage transformer? High voltage transformers convert voltages from one level or phase configuration to another, usually from higher to lower. They can include features for electrical isolation, power distribution, and control and instrumentation applications. How does a high voltage transformer work? The core of the transformer works to direct the path of the magnetic field between the primary and secondary coils to prevent wasted energy. Once the magnetic field reaches the secondary coil, it forces the electrons within it to move, creating an electric current via electromotive force (EMF) Why do transformers use high voltage? When a current flows through a wire some energy is lost as heat. The higher the current, the more heat is lost. To reduce these losses, the National Grid transmits electricity at a low current. This needs a high voltage. These transformers are installed at relay points in the transmission of electricity produced at power stations to consumers (such as households and factories). In addition to extra-high voltage (EHV) and high voltage (HV), they offer practical use of ultra-high voltage (UHV) transmission of up to 1000 kV. What is a High Voltage Transformer? A high voltage transformer is a type of transformer that operates at a high voltage level. High voltage transformers are normally used in high voltage labs for testing purposes. These high voltage transformers are subjected to transient voltages and surges during their normal operation when the insulation under test breaks down. To withstand these impulse voltages, the insulation of these transformers must be carefully designed. These are usually single-phase core-type transformers.