VSD Transformers

VSD Transformer Design and Manufacture

Free State Transformers is an established designer and manufacturer of industry leading, durable VSD Transformers. These quality products are manufactured to strict IEC standards.  Our ISO 9001:2015 certification underlines the quality of all our products.


These Transformers are used to supply variable speed drives (VSD) for motor control. A VSD typically injests a whole spectrum of harmonics into the supply lines, and the transformers design needs to accommodate these harmonics. A convertor transformer is typically rated at 100% capacity, when a Distribution transformer is typically rated at 80% capacity. VSD drives are based on power electronic and usually require a neutral line, hence the most common vector group is Dyn11, i.e. a Delta Primary with a star Secondary with the neutral point brought out.

Speak to our friendly, expert sales team today to discuss your needs for Free State Transformers VSD Transformers!

We Are The Converter VSD Transformer Experts!