021-951-2316 info@powertx.co.za


Power Transformers is an established manufacturer and designer of quality, durable mini substations, supplying to a wide base of commercial and industrial clients around the Western Cape and Southern Africa. 

All products are manufactured to Eskom specifications and according to strict SANS testing standardsOur ISO 9001:2015 certification underlines the quality of all our products, and we offer an industry best 2 Year Guarantee on all our products.

 Our range of mini substations include:

  • Available sizes are 160kVA – 1600kVA.
  • Up to and including 22kV Primary Voltages

Talk to us about your power needs.   We will consult with you, advise objectively and develop the right solution for your needs   >


A substation is a part of an electrical generation, transmission, and distribution system. Substations transform voltage from high to low – or the reverse – or perform any of several other important functions. Between the generating station and consumer, electric power may flow through several substations at different voltage levels. A substation may include transformers to change voltage levels between high transmission voltages and lower distribution voltages, or at the interconnection of two different transmission voltages.

Substations can be owned and operated by an electrical utility, or  a large industrial or commercial customer. Generally substations are unattended, relying on a control system for remote supervision and control.


  • If you need a quality product, we either have stock immediately available or we will manufacture at the shortest lead time in the industry.
  • If you need on site servicing or installations of electrical equipment, we have a team of qualified, highly trained service personnel available.
  • If you need assistance with a new electrical proposal, we have a technical team with decades of experience who will collaborate with you to find the most cost effective, appropriate solution.
  • If you need emergency support, our Support, Response and Repair team is available at all times to with fast response to minimise any potential downtime.