Trafo Power Solutions, in partnership with Italian manufacturer TMC Transformers, is expanding the use of dry-type transformer technology across Africa, in an effort to fill the demand for safer, more reliable and environmentally responsible power infrastructure.

According to Trafo Power Solutions MD David Claassen, the company has played a pivotal role in introducing this technology to a wide range of industries across Africa, from mining and manufacturing to renewable energy and infrastructure.

“Our work with TMC Transformers enables us to deliver custom engineered dry-type transformer solutions that meet even the most demanding specifications,” says Claassen.

TMC Transformers sales director Andrea Ghidini explains that the company is known for tackling complex challenges with highly specialised solutions. “We are often approached for non-standard applications, such as transformers with ratings up to 25 MVA or primary windings at 50 kV, or units handling extreme harmonic distortion or secondary currents of up to 30 000 amps,” he says.

Trafo Power Solutions notes that in African mining operations, one of its primary markets, the challenges extend beyond electrical performance. Transformers must be robust enough to endure long and difficult transport routes, severe vibration, high dust levels and extreme temperatures.

“Dry-type technology is ideal in these environments, especially as safety and environmental concerns grow,” Claassen notes. “Unlike oil-filled transformers, dry-type units are air-cooled and present minimal fire risk, making them suitable for installation near operational areas and personnel.”

Once confined to indoor use, dry-type transformers are now widely used in outdoor applications thanks to technological advancements. Higher protection ratings and improved cooling options, including forced-air, air-to-water and direct or indirect water cooling, allow these units to operate even in harsh climates.

TMC explains that it uses advanced simulation tools, including finite element analysis and thermo-dynamic modelling, to verify designs before production. The company asserts that this ensures optimal performance, long-term reliability and reduced operational risk.