Here’s How to Pick The Best Inductive Voltage Transformer

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An inductive voltage transformer is also called a step-down transformer. It is used in power stations for measuring the higher primary voltages by converting them into lower secondary voltages. These voltages can be measured by smaller instruments like voltmeters. An inductive voltage transformer is generally used in every local power grid station where higher voltages need to be measured and controlled. A typical voltage transformer or potential transformer works based on Faraday’s law of induction, which defines the conversion of electrical energy from one form value to another. For this reason, it is also called an inductive voltage transformer.

Inductive voltage transformers are designed based on the principle of mutual induction. The typical inductive voltage transformer takes a high voltage in its primary wire. It also induces a stepped-down voltage on the secondary wire which can be easily measured. This inductive voltage transformer is connected parallelly with the main electrical circuit. Its primary wiring is directly connected to the higher voltages, and the second wiring is connected to the small instrument for measurement like a voltmeter.

Applications of an inductive voltage transformerApplications of an inductive voltage transformer

Here are some of the most important applications of an inductive voltage transformer, spacing from a domestic indoor transformer to a higher commercial usage in power stations.

  • Much accurate metering:

The inductive voltage transformer provides many actual results for voltage measurement, so it is often used in domestic meters.

  • Protective relays:

Potential transformers can control voltages and give an accurate measurement. For this reason, they are often used as protective relays in electrical devices.

  • Industrial usage:

Potential transformers are also employed in many big industries like chemical plants, mines, railway stations, switch gears. They

are also utilized in other power sectors where some accurate measurements and a step-down capability are required.

If you ever need to choose the voltage transformer, you must decide what is the main purpose of the potential transformer you want to buy. There are three types of voltage transformers based on their construction and specific use.

  1. Capacitor voltage transformer (CVT):

If you have to deal with higher voltages, capacitor type potential transformers would be much more suitable for you. They are made by combining a capacitor potential divider with a magnetic voltage transformer. The CVT is preferred for applications where the average potential increases to 132KV. The reason is that CVT is often used as a communication carrier as well as a possible measurement tool.

  1. Electromagnetic voltage transformer or inductive voltage transformer (EVT/IVT):

​Electromagnetic voltage transformerThis is a typical wire round transformer which is used as a step-down transformer  in grid stations or combined with an outdoor voltage transformer. It is costly because of its required massive insulation and wired inductive network. That’s why it is used only for commercial purposes to support power stations.


  1. Optical Transformer (OT): An optical transformer is specially designed for optical instruments because it mainly focuses on the measurement of reactance and resistance.

Besides all these qualities, you should still focus on the outdoor voltage transformers that have solid insulation and therefore offer higher reliability and versatility in usage. You should definitely buy an inductive voltage transformer from Guangdong Sihui Instrument Transformer Works Co.,Ltd which is an incredible tool to make the most out of its metering and controlling potential.