Electrical Power & Protection


ACTOM supplies transformer units to Kamoa Copper Mine

April 2024 Electrical Power & Protection

ACTOM Distribution Transformers, a division within the ACTOM Group that designs and manufactures a range of 16 kVA–10 MVA distribution and lower range power transformers, recently secured an order for the supply of its neutral electromagnetic couplers, with earthing resistors, and an auxiliary transformer (NECRTs) to Kamoa Copper Mine in the Democratic Republic of the Congo (DRC).

NECRTs combine three-phase neutral electromagnetic couplers with neutral earthing resistors and auxiliary transformers. ACTOM Distribution Transformers started designing and manufacturing the NECRTs in 2010, and is now considered a class leader in this field in sub-Saharan Africa.

Lee Mbenge, CEO of ACTOM Distribution Transformers, maintains that NECRTs play a crucial role in grounding collector power transformers in substations within the green energy sector. These substations facilitate the transmission of power generated by renewable energy plants into the national grid.

The Kamoa Copper Mine is one of the biggest producers of ultra-high-grade copper in the DRC, and is powered by hydro-generated electricity produced by the Mwadingusha Hydroelectric Plant, which was rehabilitated and modernised in 2021.

Mbenge says that Kamoa Copper Mine SA has been a customer of ACTOM Distribution Transformers for several years, and has previously ordered distribution transformers and NECRTs from the business. Last year, ACTOM Distribution Transformers completed an order for NECRTs worth more than R10 million for the mine.

Preferred supplier

“We are the preferred supplier of NECRTs to Kamoa Copper Mine, which demonstrates that the mine has full confidence in our equipment. The latest order allows us to strengthen our footprint in Africa, positioning us as the dominant NECRT supplier in South Africa and also throughout the continent,” he continues.

He explains that in designing its NECRT units, ACTOM Distribution Transformers has drawn on numerous lessons learned in the local market, which has enabled the company to perfect its product to withstand the harsh conditions in which it usually operates. “The lessons that we learned were largely related to strengthening the active parts (internal design) and mechanical integrity, as NECRT units are often transported by road and take a tremendous battering by the time they arrive at a customer’s site. This prompted us to make various improvements to our NECRT product range, resulting in a robust and fail-safe design that is suitable for all applications and hostile environments. As a result, our NECRT units have performed better than those of other international suppliers, which are prone to failure.”

Better efficiency and reliability

The NECRTs deliver trouble-free utilisation, energy availability and longevity, with a lifespan of approximately 21 years. This leads to an increase in the efficiency and reliability of its customers’ renewable energy plants.

Mbenge notes that cross-border demand for the NECRT units has been increasing steadily and the business is now supplying these products to Namibia, Lesotho and Zambia.

“The latest order from Kamoa Copper Mine highlights the strength of the ACTOM brand in the design and manufacture of NECRTs and transformers. This will allow us to become further entrenched in the renewable energy market, where we would like to be more dominant,” he adds.

ACTOM Distribution Transformers provides complete backup and support to its customers via aftersales teams that promptly attend to and resolve customer queries. The business will also typically engage with its customers during the commissioning and installation of NECRTs to identify any potential problems onsite before the units are energised.


Credit(s)



Share this article:
Share via emailShare via LinkedInPrint this page

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...
Elevating artisanal skills is key to revitalising South Africa’s economy
ACTOM Electrical Machines News
We need to challenge the stigma attached to artisanal and technical careers, and we also need a mindset shift supported by the schooling system so that young people understand future career pathways, choose subjects accordingly, and recognise that artisanal and technical skills carry equal value in a modern economy.

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...









While every effort has been made to ensure the accuracy of the information contained herein, the publisher and its agents cannot be held responsible for any errors contained, or any loss incurred as a result. Articles published do not necessarily reflect the views of the publishers. The editor reserves the right to alter or cut copy. Articles submitted are deemed to have been cleared for publication. Advertisements and company contact details are published as provided by the advertiser. Technews Publishing (Pty) Ltd cannot be held responsible for the accuracy or veracity of supplied material.




© Technews Publishing (Pty) Ltd | All Rights Reserved