Company Reg. No: 813216, VAT No: GB 170080595
D&B D-U-N-S® : 212173157
Standard Industrial Classification of Economic Activities Code (SIC 2007): 33140
Products Projects The Company Procedures RoHS/REACH Terms Find Us Opening Times Employment GDPR History
Product Range
Air cooled transformers
Auto-transformers in equivalent frame sizes to our double wound range
Auto-transformers for motor starting duty, by the Korndorffer method
British Gas / Transco / National Grid approved isolation and supplies transformers
Buck / Boost Transformers
Combined LV. transformers and MCB. distribution cubicles for safety supplies
Custom manufacture of transformers to specifiers requirements and assembly with associated control equipment.
Enclosures may be fabricated to match available awkward spaces, or made to match with existing equipment
Earthing transformers
Energy Saving Systems
Ex d, Ex o, Ex e, Ex n, Ex m, Ex i, Instrumentation and power transformers
for use in Zone 1 and Zone 2 hazardous areas, manufactured to BS EN 60079 with
IECex & ATEX certification
Epoxy cast resin encapsulated transformers for use in the arduous environments of oil rigs and other areas
with high levels of humidity and vibration, some of these designs
carry military seismic / seizmic approval
Harmonic Current Reduction Transformers
K-Factor transformers, designed to reduce the heating effects of harmonic currents
induced by "K" Factor, non linear loads
Maximum service voltage: Air cooled up to 11 KV. Liquid cooled up to 15 KV
Oil immersed transformers: Free breathing and hermetically sealed type.Synthetic (Xiameter / Dow Corning® PMX-561 Silicone & Midel 7131) liquid filled units
Power reduction systems for lower energy useage
Renewable energy (Solar, Hydro-electric, Wind or Biomass) Voltage & phase conversion. Grid feed from water and wind powered turbines
Specialist Transformer units and systems for Ministry of Defence (MOD) for NATO projects and other similar applications
Single and Three phase, double wound transformers up to 550 KVA
Static balancer transformers for the provision of a neutral conductor at distant locations
Thyristor controlled power transformer units for the glass smelting & glass flake making industry
Transformers to British Rail, BRB, BREL,Network Rail, & RailTrack Specifications
Transformer-Rectifier Units for D.C. power supplies
Transformers with thyristor control systems
Voltage Increase and Reduction Transformers
Voltage measuring and metering transformers with primary windings up to 15 KV. Single phase or three phase
Winding configurations to Delta/Star (Delta/Wye), Interconnected Star (ZigZag), Auto Wound, Phase Shifted Scott & Tapped Delta
Combinations of many of the above
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Totally enclosed, air cooled,isolating transformers sealed in special stainless cases suitable for use in food-processing.
Seismically qualified, cast in resin isolating transformers
for R.N.A.D. Coulport Nuclear Facilities.
Heavy Current Transformers & rectifiers to support glass flake manufacturing
Cast in resin, seizmically qualified, isolating transformers for U.S.N.A.D. Faslane Nucular (Nuclear) Facilities
Near Silent replacement for Houchin aircraft power supplies, for Royal Navy Helicopters.To BS 2G219. (ISO6858)
Air-cooled H.V. transformer for firewater pump auxiliaries on board an off shore platform
Step-Up - Step-Down Transformer Equipment for long distance Submarine Power Transmission
Air cooled voltage matching and transient attenuation transformers of various sizes up to 250 KVA for the very demanding requirements of their
Lithrone Perfector series of sophisticated graphics printing machines
Sealed type, non-flammable fluid filled H.V. Power transformers, with windings specially braced against vibration for use on board the
Gypsum Reclaimer Machines, for the Flue Gas De-sulphurisation Plant at Drax Power Station
Site investigation and manufacture of various sealed type, non- flammable fluid filled, transformers to replace P.C.B. filled units supplying precision D.C.drives
Sealed type, non-flammable fluid filled, jack-up supply, isolating transformer to be used in a hazardous
area for the interconnection of two floating offshore platforms - For Ranger Oil
Sealed type, non-flammable fluid filled, high Spec. antennae isolation transformers with high voltage interwinding insulation.
Air cooled, isolating transformers for U.P.S. systems constructed using low smoke and fume insulation materials for Raytheon Radar,
B.M.E.W.S. III Upgrade at RAF Fylingdales
Site investigation and manufacture of transformer-rectifier unit to replace old mercury arc equipment supplying D.C. operated travelling cranes from
H.V. supply. Unit tailored to fit the available space alongside the old equipment
Assorted transformers for instrumentation, small power supplies and voltage optimisation. The majority suitable for use in "Zone
1" Hazardous Areas. All outdoor units supplied complete with galvanised (galvanized) weather protecting hoods and mounting frames
Air cooled, isolating transformers for U.P.S. Systems. Constructed using low smoke and fume insulation materials, together with
assorted transformers for low power and auxiliary equipment supplies. For Building 700, RAF / USAF High Wycombe, England (Nuclear Hardened Facility).
All units manufactured to withstand the required level of seismic disturbance
Manufacture of many Class ‘H’, Transformers, and encapsulation into 1060 HeliMiner continuous mining machine's Transformer boxes.
These machines are subject to high temperatures, constant vibration and have very tight design parameters.
Design, manufacture and supply ground electrical supplies plinths for GKN Westland / Boeing AH-64 Apache Attack Helicopters.
A very high spec. project. Design standards to Electrical Supplies For Aircraft BS 2G219. (ISO6858)
A range of EEx-d & other transformers, some complete with Neutral Earthing Resistors, Earth Monitoring equipment & Castell Safety,
Trapped Key safety interlocks
Manufacture to very tight electrical and mechanical constraints, portable voltage matching transformers, with LEMP / NEMP suppressors
and seismic / seizmic protection for the ASTOR project
Zone 1 Hazardous Area Transformer c/w Areva / Micom Relay in Ex e chambers, Impulse testing by NaREC, Certification by SIRA,
Inspected by Bureau Veritas.For the Pohokura Oil Field, North Taranaki, New Zealand
Portable Transformer / Rectifier for testing Formula 1 racing car features
Various 1230KW to 2100KW Korndorffer Auto Start Transformers
Three Phase to Single Phase, Conversion Transformers.
Xiameter / Dow Corning® PMX-561 Silicone Fluid Filled Hazardous Area Zone 2 Transformer to Eex o e d IIB T3 &others.
From 50kVA to 1600kVA
Manufacture of 2 off 550 KVA (Ex o e n [ia] IIC T3) HVAC Transformers, On Board FPSO Espirito Santo, For BC10 Field
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The Company
Leeds Transformer Company was established in 1947. It has, since then specialised in the manufacture of bespoke, custom build, low loss, energy efficient, high
quality transformers and transformer rectifiers. These are designed and built with pride by our dedicated,
highly skilled team at our works in Leeds,West Yorkshire,England.
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Procedures
Fully detailed, priced quotations, detailing technical and administrative arrangements, and terms.
In house design utilising QCad (AutoCad® Compatible), Microsoft® Excel & 'In-House' design tools & data.
Manufactured to Lloyds Register of shipping, BS 171 – IEC 60076 – IEC 60726 where applicable.
Computer controlled Sales and Purchase, with Quality, Stock Procurement and Control, Conforming to the BS EN ISO 9001:2008 Standard,
using Filemaker® database system.
All instruments, precision tooling and lifting equipment certified & calibrated.
In House automated cutting of Electrical grade, grain orientated, low loss steel cores, in straight and mitred configurations.
Clean, ferrous free, winding environment for Prime Quality, UK sourced, electrical grade, copper coils.
DuPont™Nomex® Paper and Pressboard, Weidmann Whiteley Elephantide, and Presspahn Insulation materials
Insulation improvement by drying out, vacuum impregnation, and full thermal curing of Advanced Electrical Varnish (AEV) solventless varnish,
in a Marr oven, tested at each stage by Calibrated Megger Instruments.
Extremely Robust techniques employed in designs of Coil to Core, and Transformer to case assembly.
Fluid coolants utilised are, M & I Materials Ltd, Midel 7131®, Xiameter / Dow Corning® PMX-561 Silicone Fluid,
Transformer Insulating Oil BS148: 2009 & IEC 60296:2012.
Hermetically sealed units issued with inert BOC dry nitrogen blanket above fluid.
Routine, and temperature rise (type) testing IAW BS EN 60076.
Also available, Impulse testing, ATEX / IECEx Certification by SIRA/CML, Inspection by Bureau Veritas (BV), Det Norske Veritas (DNV),
Lloyds Register of Shipping (LRS), American Bureau of Shipping (ABS) and/or similar authorities.
CE marking in accordance with European directive 2006/95/EC.
Casing, Crating, Packing & Shipping to international standards where required. Transportation by groupage, door to door, sea and air.
Full documentation packages available
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Link to Leeds Transformer Company's RoHS and REACH Compliance Statement.pdf
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Link to Leeds Transformer Company's Terms and Conditions of Sale.pdf
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By Road
Satellite Navigation (SatNav) - TomTom® Link Button
Set other SatNav's to:- LS10 1QP, Larchfield Road, Number 9
Mapcode:- GBR BNR.FH
Nearest Airports
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The above is a 'short form' of our capabilities - if we can help you, please contact us.
Nigel Wilkes
(Managing Director)
Andrew Longley
(Designer)
Emily Mann
(Company Secretary & Account Manager)
Marcin Janicki
(Designer)
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The company does not have a rapid employee turnover, however, occasionally we do have openings (job vacancies).
If you live in the local area, or perhaps Wakefield, Pontefract, Castleford or other commutable areas, are a winder or have lengthy experience
in Transformer winding or assembling, and are seeking jobs with a small friendly team, why not contact us.
Any other skills that you think may be of use to us?? We are happy to tailor a job around a particular person or expertise.
Leeds Transformer Company Ltd is committed to high standards of information security and privacy. As a company, Leeds Transformer places a high priority on protecting and managing data in accordance with accepted standards and complies with all applicable General Data Protection Regulation 2018 (GDPR) regulations.
The protection and respect of the organisation, clients, staff and other individual's personal information/rights is paramount, therefore complying with the law and following good practice is essential. Training and support is provided to the staff who handle personal data, so they can act confidently and consistently.
In addition, Leeds Transformer Company Ltd has voluntarily registered with the Information Commissioners Office and given all the appropriate notifications.
Leeds Transformer Company uses closed circuit television (CCTV) images to assist in providing a safe and secure environment for its employees, visiting clients, customers and suppliers.
The purposes for the installation of CCTV systems include the following:- The assistance in the prevention or detection of crime or equivalent malpractice, The assistance in the identification and prosecution of offenders and the Monitoring of the security at the Company’s business premises.
Leeds Transformer is a Registered Company with the Information Commissioners Office as of May 2018 Reference Number ZA360973.
Link to Leeds Transformer Company's Website Privacy Policy.pdf
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Max Harris and Walter Townley started "Electro Motor Rewind Service", repairing electric motors, transformers and
vacuum cleaners in a four roomed 'lock-up shop', in Meadow Road, Leeds, on the 1st September 1947, officially registering the company on the 5th September 1951.
With the introduction of Bernard Coates as a Director, the 'firm' took on transformer design and manufacture with a change of name on 9th July
1964 to Electro Motor Rewind Service & Leeds Transformer Co.
The Transformer Company employed more personnel and eventually moved to the present purpose built factory in September 1965.
Walter Townley died in 1968, and is remembered as a good friend.
The Transformer side of the business performed particularly well, and the rewind side was dropped, with a final change of name to the
present Leeds Transformer Company Limited, on 31st July 1972.
George Steele and Chris Jones - long term, electrically qualified, employees, joined by Mal Anderson, a Mechanical Engineer,
took over the ownership from Max in 1986.
A dedicated 'Winding workshop' was added in 1989.
Nigel Wilkes, another long term employee, who is qualified in Electrical & Electronic Engineering, in addition to qualifications in Management,
took over the company in September 1999. Nigel is now the majority shareholder and Managing Director.
A centrally heated stores was built in 2000.
Max Harris, sadly, died suddenly in October 2005, aged 92. He was a director for 58 years, and maintained a keen interest in the Company to the end.
His departure was the end of a significant era, and he is very much missed.
Further expansion, early in 2009, into an adjacent factory, taken on as a warehouse, enabled reconfiguration of the old 'Stores' into a 'Ferrous Workshop'.
September 2009 saw our office and canteen structure replaced with purpose designed canteen, Ladies & VIP toilet & 'Yard Office'
below, with Admin, Design and MD offices above.
July 2014 saw the installation of an Overhead Articulated Bridge Crane, in the Main Workshop.
With our evolving production lines, it became apparant that we needed a larger floor area and greater height.
To satisfy this requirement, in January 2020 we took on the rest of the factory adjacent to the 2009 warehouse.
This has given us a modern, efficient, well appointed, comfortable factory which is tailored to our needs.
George Steele, Chris Jones & Mal Anderson, all retired fully in September 2020 having served the Company for over 150 years between them.
Eligible employees continue to be sponsored through relevant Foundation Degree and BTEC Nat.Cert. courses.
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Leeds Transformer Co.
(formerly, 'Electro Motor Rewind Services')
Office and Workshop, Meadow Road, Leeds
QR Code iaw ISO/IEC 18004:2006 (QR Code 2005 bar code symbology specification)
A Selection of Previously Completed Projects
Customer:
Nestlé (Rowntree-Mackintosh)
Customer:
Hawker Siddeley Power Engineering
Customer:
Corrocoat
Customer:
Westinghouse Systems
Consultant:
Kennedy &Donkin
Customer:
How Engineering for HMS _____
Customer:
Amerada Hess Ltd
Consultant:
Brown & Root
Customer:
Fugro Aberdeen
Customer:
Komori
Customer:
PWH Materials Handling - For National Power
Customer:
British Steel plc, General Steels Division, Scunthorpe (now Liberty Steels)
Consultant:
H & G Engineering
Customer:
U.S. Department of Defense (Defence)
Customer:
Alan Electrical
Consultant:
W.S. Atkins & Partners
Customer:
British Steel plc. Bryngwyn Works. Swansea (now Tata)
Consultant:
South Wales Electricity
Customer:
B.P. Chemicals Ltd. Acetyls A5 Project, Hull
Consultant:
Davy McKee
Customers:
Ottermill Switchgear, N.G. Bailey
Consultant:
Oscar Faber
Various Transformers for small power and low voltage supplies at Terminal 4, Heathrow Airport
Customers:
N.G. Bailey & ABB
Consultant:
McLellan & Partners
Customers:
DBT / Allenwest Wallacetown for Cleveland Potash
Customers:
GKN Westland Helicopters & British Army Air Corps, Via Southern Electrical Contracting (SEC)
Consultant:
White Young Green
Customers:
BP Hoton Platform, via JCE Aberdeen
Consultant / Facilitator:
Halliburton, Brown & Root
Customers:
Ratheon, via Marshall SV
Customers:
Shell Todd Oil Services via Fitzroy Engineering Group
Customers:
Williams Grand Prix Engineering
Customers:
Boddington Power Controls, for Meiden Pacific (China) Ltd
Customers:
Petrofac (Sharjah, UAE) for Kuwait Oil Company (KOC)
Customers (Technology Partners):
Swift Energy Sdn Bhd (SENERGY), Malaysia, for Sarawak Shell Berhad
photo kindly presented for our website, by SBM Offshore Inc.
Customers:
SBM Offshore Inc., operated by Royal Dutch Shell (RDSA) with ONGC Campos Ltda
Our transformers and rectifiers range from 1 to 550KVA and are built to British and International standards with, short lead times, quality assurance traceably
and conforming to the BS EN ISO 9001:2008 Standard, and if needed, documentation (Quality and Technical IOM Manuals with CAD drawings).
Liasing with consulting engineers and specifiers to produce the 'right answer' for the project.
RoHS and REACH
Terms and Conditions
Find Us
Near the Junction of the M1, M62, M621 and local to the A1(M)
Link to Map of Leeds Transformer Co. Larchfield Road, Leeds LS10 1QP
(http://www.mapcode.com)
Link
Leeds Bradford Airport, Yeadon (LBA) - 13 Miles - 21 km
Link
Doncaster Sheffield Robin Hood Airport, Finningley (DCS) - 43 Miles - 69 Kilometres
Link
Manchester, Ringway (MAN) - 54 Miles - 86 km
Link
London Heathrow Airport (LHR) - 194 Miles - 312 km
Link
London Gatwick Airport (LGW) - 235 Miles - 378 km
Opening Times
There will always be one of us on hand.
Employment
Information Security, Privacy & GDPR
Policy Statement - General Data Protection Regulation 2018 (GDPR)
Closed Circuit TeleVision (CCTV)
For further information please contact sales@leedstransformer.co.uk or phone +44 (0)113 2721458
Website Privacy Policy
A Bit of History
Circa 1953
A brief profile of our company may be found at
http://www.leedstransformer.com
Leeds Transformer Company is a Limited Company Registered in England and Wales -Registration Number: 813216
Registered Office: Leeds Transformer Company Ltd. Larchfield Road, LEEDS, UK, LS10 1QP