Active components for power transformers, manufactured locally to your specifications.


CALL: +27 72 768 1613

Industries we serve

include power generation and distribution, utilities, manufacturing, transport and infrastructure. 

Full compliance

with SHEQ, OHSAS, OEM and Eskom regulatory standards. 

We manufacture

transformer cores and tank shunts with the highest quality grain-oriented steel, from 5 – 315 MVA (275 kV) to your specifications.

Install & assemble

transformers which are diagnostic-tested to bring them into service.

Test & analyze

oil samples, and we conduct DGA’s, dielectric strength and acidity tests – either on site or at our laboratory.

Manage logistics

over sea and land to move transformer components and rig them into place on site.

Maintain in-service

units with periodic testing and servicing according to OEM requirements, then report back and provide an emergency response service.


grain-oriented steel, Buchholz and surge relay units, transformer oil and consumables. 

See service details?

Did we deliver a reliable service?

Yes, always!

What made you choose Trecento?

Personalized service, quick turn-around time, BEE rating.

How would you rate us?

High quality product, built to international standards.

From our last customer Survey

Level 2 b.e.e contributor

51% Black Female owned and managed. Staff contribute to NPAT.

We were founded

in July 2014 by Carmen Williams, a financial manager with a mature experience of the South African electrical industry. Carmen’s knowledge of the power generation sector led to a productive partnership with Simon Guidetti, who is a veteran engineer and transformer specialist. 

Efficient power core

designs and a strategic view of industry needs was the unique power of their partnership, and Trecento (PTY) LTD was born. The company was founded with the support of the Enterprise Development Programme at Actom, who are the largest electro-mechanical services company in Africa.

Trecento has grown

into a leading transformer core manufacturing and service company, with a rising staff compliment, and government and multinationals as our clients. The industry has awarded our service with the Women in Power prize, presented to Carmen Williams in 2017.

Welders, riggers and testers are trained and qualified.

Continuous Improvement Programme informed by our annual customer survey.

Trecento is Accredited

by industry bodies, leading power providers and manufacturers.

Sole Agents of Legnano Teknoelectric

We are the sole agent in Sub-Saharan Africa for Legnano Teknoelectric Company (LTC) – world leaders in the processing of electrical steel for transformers. With the support of LTC, Trecento (PTY) LTD is able to supply the South African electrical industry with fully assembled transformer cores which meet the highest international quality standards.

Stay updated

on the latest developments in our workshop to help you keep your power assets running. 

Subscribe to our quarterly newsletter.

Visit us

Unit 5, Orborn Park, 1 Barfoot Road, Estera, Germiston. South Africa.

Telephone: +27 11 011 455 7027

Fax: +27 86 667 4740

Talk to us

about your project, maintenance schedule or any diagnostics you need assistance with. We’re glad to help!

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