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:
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...
ABB technology powers three substations in Uganda
ABB South Africa
Electrical Power & Protection
ABB delivered solutions for three substations run by Uganda’s leading utility, Umeme Limited, which manages and operates the state-owned leased electricity distribution network assets.
Read more...
A snapshot of South Africa’s electricity market over the next six years
Electrical Power & Protection
At the beginning of the year, the Electricity Regulation Amendment Act came into effect, promising to facilitate “an open market platform that allows for competitive electricity trading.” This article focuses on providing a roadmap for the competitive, multi-market electricity trading platform that the ERAA intends to establish.
Read more...
Empowering businesses to prosper as prosumers
Schneider Electric South Africa
Electrical Power & Protection
As more businesses adopt renewable energy solutions like rooftop solar and energy storage they become prosumers – both consumers and producers of energy – a trend that presents organisations with a significant opportunity to engage in the bi-directional flow of energy through distributed energy resources.
Read more...
Smart video is defining future EV infrastructure
Electrical Power & Protection
With the move away from combustion engines towards electric vehicles, sales of EVs across the world have increased, and with that so has the expansion of its corresponding infrastructure.
Read more...
printer friendly version