Both above and below ground, Varispeed keeps the interests of its customers top of mind, all the time. The company was recently approached by a platinum mine in South Africa to assist with a robust application.
Three induction motors were required to run a conveyor belt at the mine. These motors had to pull and share the load simultaneously, and this was achieved through the drooping control method. Jonathan Molepo, projects and services engineer for Varispeed says that this is done by limiting inrush currents to the motors, controlling the speed and protecting the motors from various faults that may occur during the process. In addition, the solution was required to operate 1500 metres underground, in a harsh and hot environment. In terms of location, the motors were a long walk away, so they needed to be as self-sufficient as possible. The solution needed to be as user-friendly as possible to ensure quick and easy setup, reliable operation and drastically reduced belt stoppages.
“We looked to a 3-phase VSD motor that could drive the load. These motors were then mechanically coupled to a gear box for high torque and speed reduction, and we installed 12 complete VSD panels.” says Varispeed managing director, Ralph Real. Molepo adds that there was a careful balance between time to completion and the high quality required for this project. “The customer was pressed for time, so we needed to ensure a quick delivery whilst not compromising on the quality”.
Varispeed received the order and took just under three weeks after receiving the approved drawings to build and deliver the 12 complete VSD panels. The customer has a five year warranty to ensure peace of mind.
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...Monitoring the voltage drop in cables Turck Banner Southern Africa
Electrical Power & Protection
With its new M12Plus connectors, Turck Banner is directly shifting the condition monitoring of cables subject to severe stress to the connection technology. The connectors, which come with voltage and current monitoring and a Bluetooth chip, enable measured voltage and current values to be sent wirelessly to a controller.
Read more...Mesh networks: a multidirectional electrical superhighway Schneider Electric South Africa
Electrical Power & Protection
Today, many power industry stakeholders are faced with mounting requirements for improved grid reliability, resilience and distribution efficiency. It’s a challenge which requires power service providers to rethink their infrastructure. Enter mesh networks, which can overcome the limitations of traditional star networks.
Read more...Versatile flexible copper busbar
Electrical Power & Protection
Referro Systems specialises in the supply and support of industrial electrical, automation and global software and hardware brands, and is now able to offer the Cubic range of Cu-Flex flexible copper busbars.
Read more...Trafo Power Solutions upgrades DRC mine transformers
Electrical Power & Protection
With its experience in Africa and its agility in executing projects rapidly, Trafo Power Solutions is supplying three mini-substations and two transformers to a copper-zinc mine in the Democratic Republic of Congo.
Read more...Acquiring locally-manufactured transformers ACTOM Electrical Machines
Electrical Power & Protection
Speed and efficiency are of the essence in the fast-evolving power generation and distribution space; but a significant challenge is the prolonged lead times associated with acquiring transformers – key components in any electrical infrastructure.
Read more...Seaward testers power PV specialists Comtest
Electrical Power & Protection
One of Asia’s leading clean energy specialists, Solarvest, uses the latest electrical safety test equipment to ensure the solar photovoltaic (PV) installations it services and maintains operate at peak performance levels.
Read more...Multi-purpose contact block
Electrical Power & Protection
The TME catalogue has been expanded to include products from Schlegel. This German, family-owned company has been specialising in the production of high-quality electromechanical components for almost 80 years.
Read more...ACTOM supplies transformer units to Kamoa Copper Mine ACTOM Electrical Machines
Electrical Power & Protection
ACTOM Distribution Transformers, recently secured an order for the supply of its neutral electromagnetic couplers, with earthing resistors, and an auxiliary transformer) to Kamoa Copper Mine in the DRC.
printer friendly version