High-voltage disconnect switch SPO

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The Alstom Grid SPO is a vertical break disconnector with a two-piece arm. In the open position the blade sections fold upon themselves in a vertical plane of only 60% of the longitudinal dimension. Main Characteristics Rated voltage from 245 to 1200kV Reliable in adverse operating conditions Two separate galvanized structural steel bases assure high strength and rigid design Much lower centre of gravity of the live part means better performance during earthquakes All bearings and counterbalancing springs are isolated from the main path Supplied or easily retro-fitted with 1 or 2 earthing switches which can also be fitted with induced current switching devices