Article

What is the working principle of a 35kv transformer?

Nov 10, 2025Leave a message

Hey there! As a supplier of 35kV transformers, I often get asked about how these nifty devices work. So, I thought I'd take a few minutes to break down the working principle of a 35kV transformer in a way that's easy to understand.

First off, let's talk about what a transformer actually is. At its core, a transformer is a static electrical device that transfers electrical energy between two or more circuits through electromagnetic induction. In simpler terms, it takes electricity at one voltage level and changes it to another voltage level. This is super important because different electrical devices and systems require different voltage levels to operate efficiently and safely.

Now, let's get into the nitty - gritty of how a 35kV transformer works. A 35kV transformer consists of two main parts: the primary winding and the secondary winding. These windings are usually made of copper or aluminum wire and are wound around a core made of a magnetic material, typically laminated steel.

The primary winding is connected to the input voltage source, which in the case of a 35kV transformer, is a 35,000 - volt power supply. When an alternating current (AC) flows through the primary winding, it creates a magnetic field around the winding. This magnetic field is constantly changing because the AC current is constantly changing direction.

The secondary winding is placed close to the primary winding so that it can be affected by the magnetic field created by the primary winding. According to Faraday's law of electromagnetic induction, a changing magnetic field induces an electromotive force (EMF) in a nearby conductor. So, the changing magnetic field from the primary winding induces an EMF in the secondary winding.

The ratio of the number of turns in the primary winding to the number of turns in the secondary winding determines the voltage transformation ratio of the transformer. If the secondary winding has more turns than the primary winding, the output voltage will be higher than the input voltage, and we call this a step - up transformer. Conversely, if the secondary winding has fewer turns than the primary winding, the output voltage will be lower than the input voltage, and it's a step - down transformer.

In a 35kV transformer, depending on the application, it can be either a step - up or a step - down transformer. For example, if it's used to step down the 35kV voltage to a lower voltage for distribution to homes and businesses, it's a step - down transformer.

Let's talk about some of the key components that help the 35kV transformer work effectively. The core is crucial because it provides a low - reluctance path for the magnetic field. The laminations in the core are designed to reduce eddy current losses. Eddy currents are circulating currents that are induced in the core itself due to the changing magnetic field. These currents can cause heating and energy losses, so the laminations, which are insulated from each other, help to minimize these losses.

Another important component is the insulating material. Since the transformer deals with high voltages, proper insulation is essential to prevent electrical breakdown and short - circuits. The windings are usually insulated with materials like paper, varnish, or oil. In oil - immersed transformers, the oil not only provides insulation but also helps in cooling the transformer by dissipating the heat generated during operation.

Now, I'd like to introduce some of the products we offer as a 35kV transformer supplier. We have the SZ 11 - M Series Three Phase Oil Immersed Distribution Transformer. This series is known for its high efficiency and reliable performance. It's designed to handle the demands of various distribution networks and can step down the 35kV voltage to a more usable level for end - users.

We also have the S(B)H15 - M Series Sealed Amorphous Alloy Power Transformer. These transformers use amorphous alloy cores, which have lower core losses compared to traditional laminated steel cores. This means they are more energy - efficient and can save a significant amount of electricity over their lifespan.

And then there's the S13 Series Of Three - phase Oil Immersed Transformers. This series offers excellent performance and durability. It's suitable for a wide range of applications, from industrial to commercial and residential settings.

S(B)H15-M Series Sealed Amorphous Alloy Power TransformerS13 Series Of Three-phase Oil Immersed Transformers

If you're in the market for a 35kV transformer, whether it's for a new project or to replace an existing one, we're here to help. Our team of experts can assist you in choosing the right transformer for your specific needs. We offer high - quality products at competitive prices, and we stand behind the reliability and performance of our transformers.

So, if you're interested in learning more or want to start a procurement discussion, don't hesitate to reach out. We're eager to work with you and provide you with the best 35kV transformer solutions.

References:

  • Electrical Engineering textbooks on transformers
  • Manufacturer's technical manuals for 35kV transformers
Send Inquiry