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. Three-phase transformers are connected in delta or wye configurations.

High-voltage transformers, also called potential transformers, are used to reduce or ‘step down’ high voltage values to lower safer values. Additionally, high-voltage transformers can be used to isolate equipment from high-power circuits.

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).

Advantages of Transformers

• Its foremost advantage is controlling and stabilizing the voltage transmission.
• It does not require any starting time.
• It is highly efficient with less capital investment and low maintenance.
• They provide isolation to the ground.
• There are no moving parts in Transformers.

It turns out that these transformers consume power whenever they are plugged into the wall, whether they are connected to a device or not. They also waste power when powering a device. The power consumption is not large — on the order of 1 to 5 watts per transformer.

Transformers do not pass direct current (DC), and can be used to take the DC voltage (the constant voltage) out of a signal while keeping the part that changes (the AC voltage). In the electrical grid transformers are key to changing the voltages to reduce how much energy is lost in electrical transmission.

Step-up transformers
Step-up transformers are used at power stations to produce the very high voltages needed to transmit electricity through the National Grid power lines. These high voltages are too dangerous to use in the home, so step-down transformers are used locally to reduce the voltage to safe levels.

Voltage and Potential Transformers Information. Voltage and potential transformers are used to measure voltage (potential). Voltage and potential transformers that are designed for monitoring single-phase and three-phase line voltages in power-metering applications are used mainly as step-down devices.

High voltage transformers are tools used to change the voltage of power lines in high voltage contexts. A volt is the unit of measurement for electromotive force, and the voltage of a power transmission line is the measurement of power transmission capacity in a transmission line.

Transformer Types based on Voltage Level Step-Down Transformer Step-Down Transformer Step down Transformer is used in both Electronics and Electrical domain. Step-Up Transformer Step-Up Transformer Step Up transformer is exactly opposite of the step-down transformer. Step up transformer increase the low primary voltage to a high secondary voltage. Isolation Transformer

Electrical energy is distributed as alternating current because AC voltage may be increased or decreased with a transformer. This allows the power to be transmitted through power lines efficiently at high voltage, which reduces the energy lost as heat due to resistance of the wire, and transformed to a lower, safer, voltage for use.

The output voltage of a transformer can be less than, greater than, or equal to the input voltage , depending on the ratio of the number of loops in their coils. Some transformers even provide a variable output by allowing connection to be made at different points on the secondary coil.