RESEARCH & DEVELOPMENT
FEATURE SPONSOR
BUSDUCT TRUNKING SYSTEM
Responding to ongoing customer requirements for cost savings and innovation, Nexans Power Accessories (UK) Ltd are launching a new busduct system. Having committed to investing in innovative customer solutions for the renewables industry and in particular wind generation, the busduct trunking system saves both space and money as it can be installed in a smaller footprint than conventional cabling methods.
Nexans Power Acccessories (UK) Ltd have a range of offshore junction chambers and frames for use in turbine towers. These, together with the ability to manufacture and supply pre-terminated leads may offer a considerable cost saving compared to traditional cable installation in the towers.
The new busduct trunking system is primarily for use in offshore substations, where large cables may need to be laid between switches and transformers. These cables have normally a high cross section and so bend radii have to be respected. This may be eliminated with busducts as they can be made with 90° angles. The busduct trunking system can also be easily installed onshore without relying on the increased costs associated with working offshore.
They can also offer it as a hybrid system whereby instead of standard terminal fittings, screened separable bushings and hence connectors can be utilised if required, to give multiple connections per phase. This method gives a more compact installation.
The busducts are basically copper bars arranged in a three phase or single phase configuration all with cast resin encapsulation. This arrangement enables the busducts to achieve IP68 protection (IEC 529) and it offers level 4 protection against pollution which is the highest level possible. To achieve longer runs the bars can be joined together very easily and then the joint is filled with resin to retain the IP68 rating. As current and voltage are increased there is respectively an increase in bar size and there is greater distance between the bars.
Current limit is 6300A but can be higher if requested and voltage limit is 36 kV.
Fire propagation is limited for a minimum of 4 hours and the busduct system will retain its operational integrity for a minimum of 40 minutes. This enhances its suitability for both indoor and outdoor use.
SUMMARY
By the release of the company’s new renewable generation products they aim to assist developers to deliver tangible cost savings as well as enhancing technical reliability over a long period of generation.
This they believe cannot only be achieved by the use of electrical distribution/transmission equipment that will achieve cost savings accrued over the life of the project but also by reducing the reliance of skilled personnel who may be in short supply in the years ahead.
Nexans
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www.windenergynetwork.co.uk
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