Dry-type transformers for water project
March 2019
Electrical Power & Protection
Dry-type transformer specialist Trafo Power Solutions has secured an order for 13 custom-designed cast resin units for Rand Water’s large Zuikerbosch Wastewater Treatment Works near Vereeniging.
The water purification and sedimentation facilities at the plant will reportedly provide an additional 600 Ml per day to the system at a project value of R3 billion, as part of efforts to meet growing water demand in Gauteng due to steady population migration into the province.
The transformers being provided by Trafo Power Solutions range in size from 100 kVA to 1 600 kVA and have been modified to include earth fault and surge protection. This is in addition to the standard temperature protection features.
“The key advantages of dry-type transformers in this kind of application are their inherent safety and their ease of installation,” says Trafo Power Solutions managing director, David Claassen. “The units can be installed inside built substations rather than having to be placed outdoors with their own civils and infrastructure.”
Unlike conventional oil-cooled transformers, the dry-type units do not carry the risk of oil leaks or spillage and hence do not require special mitigation measures to protect the environment. The technology’s relative safety also makes them more versatile in terms of the locations in which they may be housed. The units are self-extinguishing and flame-retardant by nature, allowing them to be categorised as ‘F1’ in terms of international fire ratings.
“The transformers represent state-of-the-art technology from a leader in cast resin transformer products, Hammond Power Solutions (HPS), which has been developing this field for over a century,” says Claassen. “We have sourced our custom-designed units from the group’s manufacturing facilities in Italy, which boast state-of-the-art expertise and equipment.”
While dry-type transformers have been around since the early 1900s, they are becoming increasingly popular in a variety of applications as the price differential compared to conventional transformers is no longer that significant.
For more information contact David Claassen, Trafo Power Solutions, +27 11 325 4007, [email protected], www.trafo.co.za
Further reading:
Unpacking the technoeconomic case for cleaner power in wastewater plants
Schneider Electric South Africa
Electrical Power & Protection
Behind every reliable wastewater plant is an electrical system exposed to the effects of harmonics, voltage distortion and overloaded networks caused by fleets of variable speed drives on pumps and aerators.Together, they steadily drive up maintenance demands and elevate the risk of failure.
Read more...
Energy strategy as a competitive advantage for African businesses
Electrical Power & Protection
Energy is no longer simply something that businesses consume. When managed effectively, it becomes a controllable asset that supports resilience and efficiency and sets the foundation for long-term competitiveness.
Read more...
World’s fastest 14 bit arbitrary waveform generator
Vepac Electronics
Electrical Power & Protection
The ARB Rider AWG-700 from Vepac is the world’s fastest 14 bit arbitrary waveform generator, with a 20 GS/s real-time update rate and 14 bit vertical resolution.
Read more...
Transformers for mining house in Botswana
ACTOM Electrical Machines
Electrical Power & Protection
LH Marthinusen is completing the manufacture of two 30 MVA transformers for a mining house in Botswana.
Read more...
DIN-rail power supplies for reliable and efficient AC/DC conversion
Conical Technologies
Electrical Power & Protection
The Claf Power AD75-2BxxS series DIN-rail power supplies are designed for industrial automation, control systems and process environments.
Read more...
Rethinking power for Africa’s data centres
Schneider Electric South Africa
Electrical Power & Protection
Africa’s digital economy is scaling faster than its power systems. If it wants resilient, competitive and sustainable data centres, the starting point must be a grid-to-chip architecture rather than a genset-first mentality.
Read more...
The growing decentralisation of power grids
Electrical Power & Protection
The decentralisation of power generation is changing how national grids function. For electrical engineers, several new challenges and opportunities are on the horizon.
Read more...
Custom mini substations for Zambian copper mine
Electrical Power & Protection
Recent orders to supply seventeen specially engineered mini substations for an underground copper mine in Zambia reinforces Trafo Power Solution’s track record in delivering customised electrical solutons for challenging environments.
Read more...
Unifying building information into a sea of insight
Schneider Electric South Africa
Electrical Power & Protection
Facility managers realise that in order to gain the most from building automation, they can longer deploy and operate technologies in isolation. Modern, integrated building management solutions address this challenge by bringing data from multiple sources and dispersed locations like HVAC, lighting, access control, lifts, generators, field devices, energy and
Read more...
Smart power solutions for a low-carbon future
ABB South Africa
Electrical Power & Protection
As the world marked Earth Day 2026, ABB is highlighting the role of low-voltage smart power solutions in improving energy efficiency, reducing emissions and enabling more sustainable infrastructure.
Read more...
printer friendly version