In this guide, we will cover What are voltage transformers?, What is the voltage transformer?, What are the three types of voltage transformers?
What are voltage transformers?
Voltage transformers are used in electrical measurement systems to provide accurate voltage measurements by lowering high voltages to lower, manageable levels.
They are essential to ensure that measuring devices and instruments receive voltages within their operating range, enabling accurate monitoring and analysis of electrical systems.
What is the voltage transformer?
Voltage transformers, also called potential transformers, are used to reduce high voltages to lower levels that can be safely measured and monitored by standard measuring instruments.
They ensure accurate voltage readings by isolating measuring devices from high voltage lines, protecting both equipment and personnel.
There are several types of transformers, including:
Power Transformers: Used in electrical power distribution systems to increase or decrease voltage levels for efficient transmission and distribution.
Distribution Transformers: Located near the end user to provide final reduction of distribution network voltage to usable voltage for homes and businesses.
What are the three types of voltage transformers?
Instrument transformers: Include both current transformers (CT) and voltage transformers (VT), used for measurement and protection purposes.
Isolation Transformers: Provide electrical isolation between two circuits to prevent noise and ensure safety.
Autotransformers: Use a single winding for primary and secondary functions, with taps to adjust the voltage.
TA (Current Transformers) and TV (Voltage Transformers) are types of instrument transformers.
TAs (current transformers) are used to measure high currents by reducing them to lower, measurable values. TVs (voltage transformers) are used to measure high voltages by reducing them to lower levels suitable for measuring and monitoring equipment.
A transformer changes the voltage by electromagnetic induction. It consists of two coils, primary and secondary, wound around a common core. When alternating current flows through the primary coil, it creates a magnetic field which induces a voltage in the secondary coil.
The voltage change is determined by the turns ratio of the primary and secondary coils. If the secondary coil has more turns than the primary, the voltage is increased; if it has fewer turns, the tension is reduced. This process allows for efficient adjustment of voltage levels in electrical systems.
We hope this article about What are voltage transformers? was easy to understand.