Transformers that give mines both safety and uptime
The priority area of mining today is certainly health and safety, and mines want to achieve this without compromising on meeting their production targets.
Image source: Trafo Power Solutions
The priority area of mining today is certainly health and safety, and mines want to achieve this without compromising on meeting their production targets. Dry-type transformers are increasingly seen as one constructive way of doing this.
“Dry-type transformers contain no oil as a coolant, rather using air for cooling,” says David Claassen, managing director of Trafo Power Solutions. “This means a much lower safety and environmental risk, so that these units can be readily and safely employed in opencast and underground mines – even in hazardous and space-constrained areas.”
Cooling options where the transformer’s footprint is reduced include air-to-air heat exchangers, while for more extreme conditions the company can design and manufacture water-cooled transformers. For opencast mining operations, there is often a requirement for transformers to be moved regularly on skid-mounted platforms.
“This means ensuring a high structural integrity through rigid construction, so that the units can withstand vibration as they are frequently moved over rough terrain,” he says. “Under these conditions, mines can also rest easy that there is no risk of oil leaks from our units.”
He explains that the company conducts in-depth analyses of mine applications and conditions to inform its designs. Strategic partner TMC Transformers – a leading transformer manufacturer based in Italy – uses the latest thermo-dynamic software to simulate cooling across the transformers’ hotspots. Cooling options include natural ventilation and forced ventilation, with availability of air-to-air heat exchangers and auto heat exchangers.
Their range of cast resin transformers are available from 50 kVA to 25 MVA, at system voltages up to 52 kV with Class F or Class H insulation systems.
Source: Trafo Power Solutions
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