Trafo mini substations for Zambian copper mine: design and power density notes
Reviewed by Joe Ashwell
First reported on International Mining – News
30 Second Briefing
Trafo Power Solutions is supplying seventeen specially engineered underground mini substations to a Zambian copper mine, comprising a mix of 800 kVA and 1,000 kVA units. The oil-cooled transformers are housed in compact, rugged enclosures designed for constrained haulages and high dust and moisture, with protection and switching gear integrated into each skid-mounted package. For mine electrical teams, the key impact is higher installed power density close to the working faces, reducing cable runs and voltage drop while keeping maintenance concentrated on modular units.
Technical Brief
- Orders comprise multiple 800 kVA and 1,000 kVA underground-rated mini substations from Trafo Power Solutions.
- Units are custom-engineered for a specific Zambian copper mine’s electrical distribution and layout constraints.
- Customisation scope reportedly included precise matching to the mine’s operating voltages and protection philosophy.
Our Take
Trafo Power Solutions also supplying a skid‑mounted mobile substation to an Australian mine (3 February 2026 item) suggests the company is building a niche in modular power packages for remote or constrained sites, which can shorten electrical infrastructure schedules for copper operations in Zambia.
Within our 1183 Mining stories, copper pieces frequently highlight power reliability as a bottleneck in African underground mines, so deploying multiple 800 kVA mini substations signals an effort to decentralise and harden mine‑level distribution rather than relying solely on surface or grid infrastructure.
Prepared by collating external sources, AI-assisted tools, and Geomechanics.io’s proprietary mining database, then reviewed for technical accuracy & edited by our geotechnical team.
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