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Sieyuan Electric's 500kV DC circuit breaker was put into operation in Zhangbei Flexible DC Power Grid for 100 days

2020-10-22

On June 29, 2020, as the chairman of the State Grid of China announced that Zhangbei Flexible DC Power Grid of Renewable Energy Demonstration Project was completed , 500 kV HVDC Circuit-breakers which developed by Sieyuan Electric for three years was officially put into operation. This is the world's first mechanical DC circuit breaker for engineering applications of 500kV voltage level. Its successful development is another important milestone for Sieyuan Electric's continuous innovation in the field of DC transmission.

Sieyuan Electric's 500kV DC circuit breaker was put into operation in Zhangbei Flexible DC Power Grid for 100 days.

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