Our technical team can help to design, modify and reverse engineer to your specification.

Here at R Baker (Electrical) Ltd we manufacture testing transformers for research and test application. We have worked testing facilities and universities to create unique solutions.
Our range of testing transformers cover everything from 500VA up to 250kVA. Additionally, we have the facilities to repair and rewind transformers up to the 500kVA range.
We are an independent British company offering world class engineering solutions. We can assist with designing, modifying or reverse engineering to your required specifications.

Our testing transformer range

Our team has a lot of experience in the design of transformers for testing applications and university research projects. This requires unique problems to be solved. Our custom built transformer range can be designed specifically to meet all of your requirements.

We have the knowledge to be able to assist you even when other companies can not help. No matter how unique your testing application is, we offer short lead-times and competitive pricing. We have an advantage over the competition by having a first class technical team. Our in-house technical design engineers have over 34 years in the industry.

Our custom built testing transformer range is designed for use in commercial, rail, offshore and military

Transformer range

Our transformers can be built for a wide range of environments and solutions. Have a look below at the wide selection of ways we can meet your needs:

  • Current transformers
  • Auto transformers
  • Isolation transformers
  • Earthing transformers
  • Bushing transformers
  • Custom built transformers
  • Air cooled transformers
  • Air cooled transformers
  • Liquid cooled transformers (oil immersed)
  • Harmonic current reduction transformers
  • Step up and step down transformers
  • Delta/Star, Interconnected Star transformers
  • Auto wound, phase shifted scott & tapped delta transformers
  • Marine / offshore transformers
  • Transformer-rectifier units for D.C. power supplies
  • Military transformers / NSN / NATO transformers
  • Zone 1 and Zone 2 (Exd) hazardous areas transformers
  • Transformer maintenance programmes

Transformer standards

Single phase testing transformerOur testing transformers all conform to BS EN61558 and EN 60076 standards. Also, our procedures and quality controls are independently monitored to BS EN ISO 9001:2000. Additionally, we work alongside all the leading quality and testing authorities such as; DNV, BSI, Lloyds, Nemko, NSN and VDE.
Since 1982 we have been supplying the leading engineering companies in the UK. These companies entrust us to deliver reliable, customised solutions to their engineering requirements.

Case studies

8000A Transformer

To manufacture an open style transformer designed to offer the customer 8000A at 9 volts. Our design team were required to design the transformer to be built on a moveable unit which would allow the operator the facility to move the transformer into place when testing equipment.

72kVA Testing transformer

We were tasked by a motor manufacturer to design a test unit which required our team to design a system with a 72kVA transformer and a drive to offer the facility for the operator to change the voltage, current and frequency. The unit was designed and manufactured within a stainless steel enclosure with a user control panel to offer ease of use.

10.5kW Transformer

Our engineering team were tasked to design a 10.5KW enclosed transformer, with the ability to vary the voltage manually. The customer required the facility to test their equipment at different set voltages for different periods of time. The transformer was designed so the user could easily connect the transformer to their equipment through a bus bar system.