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High-voltage gas-insulated switchgear transformer maintenance pressure sensor rental

SF6 gas in medium-voltage switchgear | T&D Guardian ... scale production began about 1953. By the 1960s, a number of designs of high-voltage SF6 circuit breakers were available. Predominantly, these were so-called "two-pressure" designs, in which a relatively low-pressure was used for insulation purposes, and a high-pressure system was used to interrupt the current.

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