Precision manufacturing at the WEG Blumenau factory in Brazil has enabled South Africa-based Zest WEG to supply two large, custom-built power transformers – a month ahead of deadline – to a power utility, strengthening the reliability of the region’s power system.

Both the 500 MVA 400 kV transformers passed the factory acceptance test (FAT) first time around and this paved the way to early delivery. Jan-Frederik Viljoen, executive for transformers at Zest WEG, said this achievement is a testament to the company’s design and manufacturing quality.
The 348 t units are the largest yet produced by WEG – with each unit boasting a power rating of 500 000 kVA and voltage class of 400 kV. The delivery efficiency reinforces Zest WEG’s position in the local market.
“Our South African team participated actively in this project, reaffirming WEG's commitment to the development of our employees and the transfer of skills,” says Viljoen. “We see this as a valuable contribution to the development of the country, as well as the alleviation of the energy shortage in the region.”
He highlights the benefits of the transformers in their robustness, flexibility and reliability. Contributing directly to the development of the local economy, they are also an important element of the expanded investment in emergency capacity to generate complementary power supply for the region.
The contract is an important achievement for Zest WEG, which is deepening its contribution to power generation, transmission and distribution as part of its developmental drive. The company is well-established in the mining and industrial sectors and is currently increasing its engagement with power producers and municipalities.
Zest WEG’s manufacturing operations in South Africa include two transformer factories near Johannesburg, which produce and supply the local market with 145 kV voltage class transformers. The company’s portfolio includes power distribution equipment such as miniature substations, distribution transformers and power transformers, as well as packaged switchgear and automation solutions such as E-Houses, motor control centres (MCCs) and electrical enclosures. In its range of power generation solutions are conventional diesel generators, combined heat and power generation (CHP) and renewable energy generation.
In additional services relevant for the public sector, it also supplies substations and electrical infrastructure, including the design, supply and construction of overhead lines, mechanical and electrical construction of substations, and high-voltage and low-voltage electrical reticulation.
For more information visit: www.zestweg.com