TEC naturally provides a full repair and reconditioning service for transformers, reactors, transformer/rectifiers and other equipment of our own manufacture.  Full refurbishment is offered to original specification including testing and certification to the appropriate specification – BS 171 or BS EN 60076

We are also pleased to offer a repair and reconditioning service for many types of transformer manufactured by others.  In some cases it may be possible to quote without seeing the item if a full description and specification can be provided.  In other cases it may be necessary to quote a non-refundable inspection fee, which will be rebated against the invoiced price of the repair or of the supply of a replacement.

All repaired or refurbished equipment is fully tested before dispatch.Repair Recon

Transformers can be rewound for different voltages or vector groupings to suit customers specific requirements.

Contact us today with your enquiry


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CL DgreyL outline 4ptv2

The Claude Lyons Group
2 Tower House, Hoddesdon, Herts, EN11 8UR, England
Spares are obtainable from who are stockists of surplus Claude Lyons units and spares .

E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Company registered in England No 222791
Registered office as above

VAT Reg No. GB 213 5042 15


UK Established Since 1918

The Claude Lyons Group was founded in the UK in 1918 and is still in private ownership. Since our early days we have been innovators in areas related to voltage and power control and more recently in energy saving and harmonic mitigation. Operating as a global exporter with many years experience we can justifiably call ourselves a world leader in the field of voltage stabilisers, power conditioning and uninterruptible power supplies (UPS)