R/€ = 13.04
R/$ = 12.05
Au 1186.86 $/oz
Pt 1142.00 $/oz
Aug 11, 2006
Largest furnace transformer suppliedBack
© Reuse this Technology firm Siemens has announced that it recently completed the most powerful furnace transformer ever manufactured at its factory, in Dresden.
The product, which has since been installed, has enabled the Siegen steelworks, in Germany, to increase its production by 30%.
The new 105-MVA furnace transformer replaces an earlier arc-furnace transformer which had a power rating of 75 MVA.
The higher power rating of the new transformer and its higher output voltage ensure longer arcs in the furnace, thereby allowing a proportionate increase in production.
The output voltage required in each case can be set through a built-in tap changer.
A particular feature of this furnace transformer solution is a reactor that can also be adjusted through the tap changer.
This stabilises the arcs and attenuates perturbations in the power-supply system.
Exchanging the existing 26- year-old furnace transformer for a higher-powered model needed for this required the use of a series-connected transformer, also with a capacity of 105 MVA.
This transformer was connected directly to the 110-kV power- supply system and delivers the 30-kV input voltage required for operating the furnace transformer.
Although it would have been technically possible to design the input winding of the new furnace transformer for 110 kV, this would have resulted in a considerably higher transport weight and would have exceeded the carrying capacity of the steelworks crane.
The new furnace transformer, which weighs 124 t without oil, was lifted into place in the transformer house alongside the smelting furnace by crane immediately after the old transformer had been dismantled.
After it had been filled with transformer oil, the total weight of the transformer increased to about 166 t.
The cooling unit for dissipating heat loss and the expansion vessel had to be erected separately owing to lack of space.
An additional transformer house was also required for the preliminary transformer.
The plant operator, Edelstahl-werke S
Edited by: Bert Swart© Reuse this Comment Guidelines (150 word limit)
Other Foundries, Forges and Die-Casting News
Updated 16 minutes ago Creamer Media’s Electricity 2015 report provides an overview of State-owned power utility Eskom and independent power producers, as well as electricity planning, transmission, distribution and the theft thereof, besides other issues.
Recent Research Reports
Projects in Progress 2015 - First Edition (PDF Report)
In fact, this edition of Creamer Media’s Projects in Progress 2015 supplement tracks developments taking place under the Renewable Energy Independent Power Producer Procurement Programme, which has had four bidding rounds. It appears to remain a shining light on the...
Electricity 2015: A review of South Africa's electricity sector (PDF Report)
Creamer Media’s Electricity 2015 report provides an overview of State-owned power utility Eskom and independent power producers, as well as electricity planning, transmission, distribution and the theft thereof, besides other issues.
Construction 2015: A review of South Africa’s construction sector (PDF Report)
Creamer Media’s Construction 2015 Report examines South Africa’s construction industry over the past 12 months. The report provides insight into the business environment; the key participants in the sector; local construction demand; geographic diversification;...
Liquid Fuels 2014 - A review of South Africa's Liquid Fuels sector (PDF Report)
Creamer Media’s Liquid Fuels 2014 Report examines these issues, focusing on the business environment, oil and gas exploration, the country’s feedstock supplies, the development of South Africa’s biofuels industry, fuel pricing, competition in the sector, the...
Water 2014: A review of South Africa's water sector (PDF Report)
Creamer Media’s Water 2014 report considers the aforementioned issues, not only in the South African context, but also in the African and global context, and examines the issues of water and sanitation, water quality and the demand for water, among others.
Defence 2014: A review of South Africa's defence industry (PDF Report)
Creamer Media’s Defence 2014 report examines South Africa’s defence industry, with particular focus on the key participants in the sector, the innovations that have come out of the sector, local and export demand, South Africa’s controversial multibillion-rand...
This Week's Magazine
Projected capital expenditure (capex) in the South African automotive assembly industry should reach a record R7.48-billion this year, says the National Association of Automobile Manufacturers of South Africa (Naamsa) in its 2014 fourth quarter business review. Capex...
After several years of navigating project-threatening red tape and currency fluctuations, the 4.4 MW Bronkhorstspruit biogas power plant, which will supply clean energy to a leading automotive manufacturer in Gauteng, is expected to enter production before June....
South African paper and pulp producer Sappi reported earlier this month that it would build a pilot plant for the production of low-cost Cellulose NanoFibrils, or CNF (nanocellulose) at the Brightlands Chemelot Campus in Sittard-Geleen in the Netherlands.
The long-term outlook for Nigeria is a country that has the potential to be very strong. So affirmed International Monetary Fund (IMF) Nigeria Mission Chief and Senior Resident Representative Dr Gene Leon on recently. "But we are starting from a point of huge...
Poor infrastructure planning and inadequate maintenance are becoming increasingly problematic for new developments and the associated infrastructure required to support such developments. In many urban and rural municipalities, the state of infrastructure has been...