ABB launches optimized two-pole 1500V DC switch for UL and IEC solar industry

ABB is launching the solar industry’s first fully optimized two-pole DC switch-disconnector for 1500V utility-scale photovoltaic power plants covering 315-630A current range. The new design offers both a size reduction and an increase in efficiency and performance to help manufacturers adapt to the industry’s rapid adoption of 1500V DC solutions.

The two-pole 1500V DC concept helps manufacturers improve system efficiency, reducing switch losses by up to 35 percent. Measuring just 150mm wide and 122mm high, the OTDC range of 1500V DC switches is also up to 30 percent smaller than conventional solutions. The compact size of the new OTDC range makes it possible for manufacturers to reduce the size of combiner boxes and inverters.

Riku Pelttari, Head of Global Product Management for ABB’s Switches ＆ Fusegear business, said: “The new OTDC 1500V DC switch-disconnector is another example of ABB producing innovative, further improved solutions that drive the market and help manufacturers make solar power more competitive and efficient. This solution brings together years of research and experience of making and breaking DC current and voltage. We expect it to quickly become the preferred solution.”

The shift from 1000V to 1500V systems is helping reduce the cost of utility-scale photovoltaic systems. Higher-voltage systems enable longer strings, which mean fewer combiner boxes and less wiring, making installations less labor-intensive and reducing the cost per watt of installed power. By 2019, virtually all new utility-scale solar plants are expected to be 1500V DC.

ABB’s unique design makes it possible to operate up to two 1500V DC strings with just one switch. In addition to the standard connections, the OTDC’s modular design also makes it possible for ABB to fulfil the non-standard requests that come from the fast-changing solar market.

The OTDC range is a family of robust switch-disconnectors, designed for photovoltaic and Battery Energy Storage Systems (BESS) applications. The range is tested according to the UL, IEC and CCC standards to withstand the extreme outdoor conditions and sudden temperature changes that are usual in a solar farm.

ABB provides the most comprehensive portfolio of products, systems and solutions along the solar PV value chain that enable the generation, transmission and distribution of solar power for both on-grid and off-grid applications. New OTDC will be the next product to improve ABB’s solar offering even further.

The expected sales release is in Q4, 2018.

ABB (ABBN: SIX Swiss Ex) is a pioneering technology leader in electrification products, robotics and motion, industrial automation and power grids, serving customers in utilities, industry and transport & infrastructure globally. Continuing a history of innovation spanning more than 130 years, ABB today is writing the future of industrial digitalization with two clear value propositions: bringing electricity from any power plant to any plug and automating industries from natural resources to finished products. As title partner of Formula E, the fully electric international FIA motorsport class, ABB is pushing the boundaries of e-mobility to contribute to a sustainable future. ABB operates in more than 100 countries with about 135,000 employees. www.abb.com