R/€ = 14.90
R/$ = 10.73
Au 1339.50 $/oz
Pt 1482.00 $/oz
Aug 11, 2006
Largest furnace transformer suppliedBack
Dresden|Edelstahl|Siemens|Germany|Siegen Steelworks|SiegennSteelworks|Furnace Transformer Solution|Oil|Technology|Transport
© 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
Other Foundries, Forges and Die-Casting News
A new modular oven and operator panel with a colour display is being offered by global technology group Siemens’ Industry Automation Division for its Maxum Edition II gas chromatograph, used to separate and analyse gas by chromatography.
British technology company Dyson says its patented Airblade hand dryer is the first hand dryer to earn the Carbon Reduction Label from nonprofit organisation Carbon Trust.
Recent Research Reports
Automotive 2014: A review of South Africa's automotive sector (PDF Report)
The report provides insight into the business environment, the key participants in the sector, local construction demand, geographic diversification, competition within the sector, corporate activity, skills, safety, environmental considerations and the challenges...
Construction 2014: A review of South Africa's construction sector (PDF Report)
Construction data released during 2013 hints at a halt to the decline in the industry during the last few years, with some commentators averring that the industry could be poised for recovery. However, others have urged caution, noting that the prospects for a...
Electricity 2014: A Review of South Africa's Electricity Sector (PDF Report)
This report provides an overview of the state of electricity generation and transmission in South Africa and examines electricity planning, investment in generation capacity, electricity tariffs, the role of independent power producers and demand-focused initiatives,...
Defence 2013: A review of South Africa's defence industry (PDF Report)
Creamer Media’s 2013 Defence Report examines South Africa’s defence industry, with particular focus on the key players in the sector, the innovations that have come out of the defence sector, local and export demand, South Africa’s controversial...
Road and Rail 2013: A review of South Africa's road and rail infrastructure (PDF Report)
Creamer Media’s Road and Rail 2013 Report examines South Africa’s road and rail transport system, with particular focus on the size and state of the country’s road and rail network, the funding and maintenance of these respective networks, and the push to move...
Liquid Fuels 2013 (PDF Report)
Creamer Media’s 2013 Liquid Fuels report examines South Africa’s liquid fuels market, focusing on the business environment, oil and gas exploration, the country’s feedstock supplies, the development of South Africa’s biofuels industry, fuel pricing,...
This Week's Magazine
A structured approach, wherein managers personally engage at each level of the project, is necessary to mitigate delays to the workflow on mega construction projects, says State-owned Eskom Kusile power station projects GM Abram Masango. The 4 800 MW Kusile power...
Construction of transmission lines to evacuate power from a regional hydroelectric project in East Africa, which was hanging on the balance following the withdrawal of financing by key partners, is now back on track. After six months of uncertainty, the African...
Three Memorandums of Understanding (MoUs) were signed between South African and Malaysian companies at the Malaysian High Commission in Pretoria on Friday. These MoUs are part of the indirect offsets programme South Africa is providing in return for Malaysia’s...
The South African new vehicle market may well dip to 640 000 units in 2014, says Toyota South Africa Motors (TSAM) sales and marketing senior VP Calvyn Hamman. This is the first prediction that anticipates a drop in the market. To date economists and industry bodies...
Nissan will re-enter the South African minibus taxi industry in March, when the new NV350 Impendulo goes on sale. The 16-seater has been specifically tailored to meet the terms of government’s Taxi Recapitalisation Programme, which aims to replace South Africa’s...