Power and Distribution Transformers Ltd

Richard Wilson (Dencol) Ltd Specialise in power engineering from their facilties in the UK.

Supplying medium voltage & low voltage switchgear, power transformers, distribution transformers, containerised package substations, battery trip units and associated electrical equipment to UK and overseas customers.

We also have a large hire fleet of power transformers, distribution transformers, switchgear and HV cables for temporary or emergency power supplies.

RWD supply many of the regional electricity companies and have a diverse customer database of satisfied industrial customers around the UK and overseas.

Product Range


Electrical power transformers up to 60 MVA and 220 KV voltage class.

Distribution transformers ranging from 50KVA to 3000KVA both liquid filled or dry type available

Switchgear & Motors

We stock a large range of mainly Uk manufactured equipment from manufacturers such as; Reyrolle, GEC, Ottermill, Merlin Gerin, Schneider, Yorkshire Switchgear, AEI Switchgear, Brush, Long Crawford, Ellison, Allenwest, Alstom, ABB, Dorman Smith, Square D, English Electric, Wallacetown, Simplex, Whipp and Bourne, Southwales, MEM and lucy. Voltage range 415 Volts -33KV. Current range 50 amps -5000 amps. We carry a large selection of Alternating current(AC), Squirrel cage and Slip ring motors from 150 KW to 3000 KW at various speeds. Voltages ranging from 11000, 6600, 4160, 3300 and 415V, mostly three phase machines at 50 Hertz

Switchgear Battery Tripping Units

We manufacture in house our own range of substation battery tripping units and closing units for use with medium voltage substation switchboards.

Our units are compact, smart and come in a vareity of voltages: 12 Volts, 24 Volts, 30 Volts, 50 Volts, 110 Volts & 220 Volts DC.

Hire Services & Rental of Electrical Plant

Multi tapped voltage transformers 25 KVA to 4000 KVA, 50 HZ & 60 HZ, motor starters & korndorofs 3.3KV-15KV, DC Rectifiers & cables up to 13.8KV.

Containerised & Package substations

With our range of electrical equipment we are able to design and build containerised package substations and outdoor package substations incorporating our switchgear and transformers

Our commitment and flexibility is shown in a letter from Guys Hospital London UK.

Power and Distribution Transformers Ltd Overview