Skid-mounted dry-type transformer
June 2020
Electrical Power & Protection
In a specialised application on a coal mine, Trafo Power Solutions recently supplied a dry-type transformer mounted on a mobile skid.
“The harsh environment of a coal mine required us to specially design a fit-for-purpose solution,” explains David Claassen, managing director at Trafo Power Solutions.
The cast-resin dry-type transformer is ideal for the mobile arrangement as it is cooled without oil, which also makes it a safer option in terms of fire hazards, especially on a coal mine. It is also more environmentally friendly, as there is no chance of an oil spill, while the 1250 kVA dual-MV configuration supplied to this mine allows the unit to be linked up to either an 11 kV or 6,6 kV supply.
“The unit was designed for a compact enclosure, while still allowing for sufficient air movement for cooling,” adds Claassen. “We provided a unique solution of a cast-resin transformer with Class H insulation rating for both the medium-voltage and the low-voltage windings.”
This insulation standard ensures that the transformer can withstand temperatures of up to 180°C. He notes that the enclosure design had to accommodate these heat factors while also preventing the ingress of dust or water.
Special engineering was also applied to building a high level of mechanical rigidity into the transformer itself, as demanded by the regular relocation of the mobile skid. This movement means considering that vibration and other forces must be borne by the equipment without affecting its performance.
Claassen emphasises that Trafo Power Solutions is experienced in providing dry-type transformers in a range of enclosed formats to suit customers’ needs. The inherent safety of these transformers also allows them to be installed in underground mining locations. “We can provide various dry-type transformer enclosed solutions with a mobile skid, which is a versatile format for a range of mining applications,” he concludes.
Trafo Power Solutions’ solid track record in cast-resin transformers is based on its local expertise and design capacity, combined with the high-quality manufacture of the units by Italy-based TMC Transformers.
Further reading:
Power supply with scalability optimised
Schneider Electric South Africa
Electrical Power & Protection
Schneider Electric has introduced the Easy UPS 3-Phase Modular to the South African marketplace. This robust uninterruptible power supply (UPS) is designed to protect critical loads while offering third-party verified Live Swap functionality.
Read more...
Prioritising arc flash safety
Comtest
Electrical Power & Protection
Comtest has developed a range of thermal imaging and wireless testing tools from Fluke, designed to ensure safety is the top priority for engineers working in potentially dangerous arc flash zones.
Read more...
Hot Dip Galvanizers Association shines new light on renewable energy
Electrical Power & Protection
The Hot Dip Galvanizers Association of Southern Africa plays an important role in supporting the energy value chain – which spans clean, renewable and green energy – as it powers towards key sustainability targets.
Read more...
ACTOM supplies high-voltage equipment to wind farm project
ACTOM Electrical Machines
Electrical Power & Protection
ACTOM High Voltage Equipment is currently in the process of manufacturing 400 kV and 132 kV high-voltage primary equipment for the Ummbila Emoyeni wind farm project in Mpumalanga.
Read more...
Energy measurement module for BL20 I/O System
Turck Banner Southern Africa
Electrical Power & Protection
Turck’s BL20 energy measurement module enables precise monitoring of the energy consumption of single- or three-phase systems.
Read more...
Distributed energy resource management systems: a grid symphony
Schneider Electric South Africa
Electrical Power & Protection
To listen to a symphony is one of the world’s great gifts. A conductor must ensure that instruments play beautifully as a whole and are kind to the ear and uplifting to the spirit yet shine in their individuality. The same can be said of a DERMS, which must effectively manage diverse energy sources to avoid compromising the grid’s integrity.
Read more...
Focus on energy sector infrastructure development can drive economic growth
Electrical Power & Protection
Post-election periods in South Africa often see a renewed focus on infrastructure development, with a specific emphasis on directing investments towards the energy sector. This strategic approach aims to accelerate economic growth, address energy challenges, and ultimately uplift the overall standard of living for the populace.
Read more...
Turning the continent into a global leader for green fuel
Electrical Power & Protection
Africa is at a turning point, with the potential to shift from being a supplier of raw materials to becoming a leader in advanced manufacturing, particularly in the growing green hydrogen market. For this transformation to happen, African countries must work together, combining their resources and talents to build a strong local economy.
Read more...
Epiroc showcases battery-electric drill rig at MINExpo 2024
Electrical Power & Protection
Epiroc recently showcased a demonstrator of the first ever Down-The-Hole SmartROC D65 battery-electric drill rig at the MINExpo exhibition in Las Vegas.
Read more...
Smart metering for utility management and sustainability
Electrical Power & Protection
Theodore Paraskevakos, a Greek-American inventor and businessman, developed the first smart meters in 1972 while collaborating with Boeing. Since then, smart meters have evolved significantly.
Read more...
printer friendly version