ENP Newswire -
Release date- 17102013 -
Easy-to-process Zytel FR also offers good impact resistance, strength and a relevant Comparative Tracking Index (CTI) value. CTI is used industry wide to measure the electrical breakdown (tracking) properties of an insulating material.
The ABB devices - called 'OTDC 16. 32' - have been designed to suit the specific demands of photovoltaic applications, which include the significant arcing generated by high-voltage DC switching.
These small, DC rated switch-disconnectors can experience voltage levels as high as 1,000 volts even in solar applications. The CTI value of the material has to be significant, especially in these small switches where there is not much space to create buffer zones.
'DC is more difficult and challenging than alternating current (AC),' said
'Arcing concerns us,' he said. 'With DC there is always arcing when you break a load. This means that any material used in the switch's construction has to be able to withstand the extremely high instantaneous temperatures.
'We had to take a very hard look at the materials out there,' Uitto explains, 'due to the high CTI values we needed. In this case we had to see what we wanted and balance it against what was available. We have manufactured switches for a very long time; we know the materials and the ones we typically use, we really had to dig deep in the design of this switch range due to the required CTI value and the small space we had available.'
With its UL rating, weldability, excellent flow and impressive mechanical properties, Zytel also offers cost savings against other thermoset alternatives. Zytel is an extremely flexible material, which has been put to use in a huge range of applications across the globe and it has undergone significant development by scientists at
ABB has developed a whole range of products dedicated to photovoltaic applications and is able to meet all installation requirements, from the strings on the DC side to the AC grid connection point. Its product range includes circuit breakers, switch disconnectors, fuse disconnectors and fuses, residual-current-operated circuit-breakers, grid-connection relays, metering devices, surge arresters, consumer units and enclosures suitable for outdoor installation, all specially designed for these applications.
ABB (http://www.abb.com) is a leader in power and automation technologies that enable utility and industry customers to improve their performance while lowering environmental impact.
DuPont Performance Polymers is committed to working with customers throughout the world to develop new products, components and systems that help reduce dependence on fossil fuels and protect people and the environment.
With more than 40 manufacturing, development and research centers throughout the world, DuPont Performance Polymers uses the industry's broadest portfolio of plastics, elastomers, renewably sourced polymers, filaments and high-performance parts and shapes to deliver cost-effective solutions to customers in aerospace, automotive, consumer, electrical, electronic, industrial, sporting goods and other diversified industries.
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