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:
Half brick second generation converter
Vepac Electronics
Electrical Power & Protection
The Supreme series half brick second generation converter from Vepac is composed of isolated, board-mountable, fixed switching frequency DC-DC converters that use synchronous rectification to achieve extremely high power conversion efficiency.
Read more...
Multimeters: the perfect entry-level choice
Comtest
Electrical Power & Protection
Experience the precision, durability and safety of professional-grade test tools with the entry level Fluke 15B+ and 17B+ digital multimeters.
Read more...
South Africa can become an important EV manufacturer
Electrical Power & Protection
A year ago, South Africa was mired in loadshedding, with the importance and relevance of electric vehicles (EVs) far from the public imagination. Fast forward a year and much has changed
Read more...
Self-contained standalone lightning warning system
Senseca
Electrical Power & Protection
Biral, now part of the Senseca Group, and a specialist in environmental and meteorological measurement instrumentation, has launched its BTD-200 lightning warning system, which is a complete detection and warning system.
Read more...
Compact, high density power protection system for AI, data centre and large-scale electrical workloads
Schneider Electric South Africa
Electrical Power & Protection
Schneider Electric has launched its new Galaxy VXL – a highly efficient, compact, modular, scalable and redundant 500-1250 kW (400 V) 3-phase uninterruptible power supply (UPS), complete with enhanced cybersecurity, software and safety features.
Read more...
Taking the pain out of panel building
Omron Electronics
Electrical Power & Protection
Panel building stands as a cornerstone of industrial automation, shaping the efficiency and reliability of automated systems across different and diverse industries, from manufacturing to infrastructure. Omron leverages over 80 years of experience to furnish OEMs and builders with cutting-edge control panel solutions.
Read more...
Powerless is not an option
Electrical Power & Protection
When the power goes out it is important for commercial and tertiary facilities to be able to keep essential electrical equipment running. UPS systems are critical for transitioning and emergency backup power.
Read more...
High-performance surface inspection systems for battery production
Electrical Power & Protection
As battery manufacturers increase their focus on yield optimisation to meet growing demand, AMETEK Surface Vision is highlighting the essential role of processes to improve quality and reduce defects.
Read more...
Securing the power supply
Electrical Power & Protection
Grid management systems are the linchpin of modern transmission and distribution networks. To understand the intricacies of grid management, it is necessary to unpack its core components: scada systems, energy management systems, outage management systems and wide area management systems.
Read more...
Powering sustainable mining operations in Africa
Electrical Power & Protection
Africa’s mining sector is at a crossroads and, as the industry grapples with mounting pressure to drive operational efficiency within the boundaries of sustainability, natural gas is emerging as a compelling solution.
Read more...
printer friendly version