Jul 09, 2012
Company Announcement: WEG Energy Boosts its Capacity for Vacuum Pressure ImpregnationBack
Components|Generators|Measurement|Motors|Safety|System|Systems|WEG|Zest WEG Group|Brazil|Chemical Solvents|Controls Manufacturing|Energy|Manufacturing|Manufacturing Capacity|Motors|Systems|Louis Meiring|Motors|Insulation|Motors|Measurement
WEG Energy, part of leading Brazilian motor and controls manufacturing group WEG — the holding company for the Zest WEG Group, recently installed new vacuum pressure impregnation (VPI) systems at two of its factories in Brazil, effectively expanding its manufacturing capacity for both horizontal and vertical electrical machines with IEC frame sizes up to 2500 and voltages up to 15 000 V. The new VPI systems are designed to allow the impregnation of components with diameters up to 5 metres and heights up to 4 metres, as well as rotors with shafts up to 7 metres in length.
“These investments have boosted WEG’s VPI capacity for larger machines, such as hydro generators, turbo generators, synchronous motors and DC motors,” Zest WEG Group’s ceo, Louis Meiring, says. “The main advantages of VPI include a significant reduction in voids — the empty spaces in the insulation which have the potential to cause partial discharge and damage to the insulation. The system also provides excellent mechanical strength to winding overhangs, extending their lifespan.
“In addition, the VPI process establishes a low thermal resistance path, resulting in a reduced winding temperature. The resin contains no chemical solvents and establishes a shield against external contaminants such as humidity and protects the environment and improves the safety of systems operators. VPI also renders redundant several systems components, such as cooling, heating, vacuum and control, to ensure the stable operation of the entire system, providing a high level of reliability and excellent quality in the final product.”
The VPI process begins with the stator or rotor being placed into the autoclave. An extremely strong vacuum is applied and maintained until all insulation humidity has been completely removed. The autoclave is then slowly flooded with resin, which fully submerses the parts. The vacuum level is maintained until the impregnation process is completed and then autoclave pressure is equalised with atmospheric pressure. A higher pressure is applied and maintained until the online measurement system indicates that the insulation capacitance criteria are accepted. The resin is then drained out and the part is removed from the autoclave and taken to the cure oven.
Edited by: Creamer Media ReporterComment Guidelines (150 word limit)
Other Announcements News
Molex Incorporated introduces its next generation Brad® applicomIO PROFIBUS Network Interface Cards, which are form-fit-function replacements for the existing family. Delivered with applicomIO version 4.1, which includes Windows 8 support, the second generation NICs...
In the cut-throat competitive world of insurance, using new collaboration tools in innovative ways can give insurance firms a competitive edge, says Andre le Roux of Interactive Intelligence. Collaboration is an integral part of the insurance business. But today, the...
At Propak Cape 2014 Marel will be showcasing innovative further processing and end of line technologies, including solutions for the production of boneless, bone-in, portioned, filled, sausage and potato processed products for your desired end results. Marel will...
Recent Research Reports
Road and Rail 2014: A review of South Africa's road and rail infrastructure (PDF report)
Creamer Media’s Road and Rail 2014 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...
Real Economy Year Book 2014 (PDF Report)
This edition drills down into the performance and outlook for a variety of sectors, including automotive, construction, electricity, transport, steel, water, coal, gold, iron-ore and platinum.
Real Economy Insight: Automotive 2014 (PDF Report)
This four-page brief covers key developments in the automotive industry over the past 12 months, including an overview of South Africa’s automotive market, trade figures, production and the policies influencing the sector.
Real Economy Insight: Construction 2014 (PDF Report)
This five-page brief covers key developments in the construction industry over the past 12 months. It provides an overview of the sector and includes details of employment in the sector, infrastructure and municipal spending, as well as insight into companies’...
Real Economy Insight: Electricity 2014 (PDF Report)
This five-page brief covers key developments in the electricity industry over the past 12 months, including details of State-owned power utility Eskom’s generation activities, funding and tariffs, independent power producers and prospects for the sector.
Real Economy Insight: Road and Rail 2014 (PDF Report)
This six-page brief covers key developments in the road and rail industries over the past 12 months, including details of South Africa’s road and rail network and prospects for both sectors.
This Week's Magazine
The multibillion-rand development of the Zendai Modderfontein New City, east of Johannesburg, will aim to exemplify an integrated city node, says property group Zendai South Africa COO Wenhui Du. The development will focus on the Modderfontein Gautrain station to be...
The South African Civil Aviation Authority (CAA) hopes to have finalised regulations for the flying of Unmanned Air Vehicles (UAVs) – also designated Remotely Piloted Air Systems (RPAS) and popularly called drones – in the country’s civilian airspace by the end...
Various stakeholders have expressed optimism that the Small Business Development Ministry, created after the national elections in May, will add much needed impetus to enterprise development in South Africa, where a strengthening of the entrepreneurial culture is...
Capturing and storing carbon dioxide (CO2) is the only way through which the world will achieve the lowest of the United Nations Framework Convention on Climate Change’s (UNFCCC) global warming predictions, called the representative concentration pathway (RCP) 2.6....
The City of Johannesburg has recovered R107-million following the arrest of 22 people allegedly involved in corruption, collusion, fraud and tampering with the city’s electricity systems, which had ultimately cost the city R200-million in lost revenue.