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iso sf6 circuit breaker gas pressure South America

iso sf6 circuit breaker gas pressure South America

Circuit breakers SF 1 to 40.5 kV Sulfr hexafluoride switchgear sf6 gas circuit breakers use the sf 6 auto-compression technique. The main contacts and the arcing contacts are initially closed (fig. 1). Pre-compression (fig. 2) When the contacts begin to open, the piston slightly compresses the Sulfr hexafluoride gas in the pressure chamber. The arcing period (fig. 3) The arc then forms between the arcing contacts.

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