ABB has always paid special attention to generation of renewable energy, constantly collaborating alongside the major wind turbine manufacturers, sensing the need ahead of others to protect plants with variable frequency. ABB SACE presents its innovative solution for protecting plants with variable frequency for applications in wind, mini-hydroelectric, wave and traction power sectors. Once again, ABB SACE is ahead of trends and, as a first on the market, comes out with circuit breakers able to operate in a range of frequencies from 1 to 200Hz. Major benefits of this new range of circuit breakers for applications at variable frequency are: Optimal protection of generators and users against overload and short-circuit over the whole range of frequencies from 1 to 200Hz; Compatibility with all types of generators, even in overspeed running, thanks to the high rated voltage of the circuit-breakers (up to 1000V); Standardized switchboard design and optimized stock management thanks to IEC circuit-breaker marking.

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