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sf6 Load break switch hv switchgear gas concentration electronic weighing device

electrical energy: study of substation first industrial application of SF6 for current interruption dates back to 1953. High-voltage 15 kV to 161 kV load switches were developed with a breaking capacity of 600 A. The first high-voltage SF6 circuit-breaker built in 1956 by Westinghouse, could interrupt 5 kA under 115 kV, but it have 6 interrupting chambers in series per pole.

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