Catalog excerpts
MEDIUM VOLTAGE LOAD BREAK SWITCH-DISCONNECTORS 12-24 KV - GRANY MV load break switches/disconnectors designed for board manufacturers. Easy making of Air Insulated Switchgear (AIS) modular distribution units, up to 24 kV. Main characteristics GRANY switches/disconnectors are used for the production of very compact medium voltage cut-off devices in SF6. They consist of a moulded enclosure of epoxy resin, permanently sealed and filled with SF6. Movable contacts are triggered by manoeuvred mechanisms or mechanical energy reserves for a control manoeuvre. These switches are motorised and can design a wide variety of MV device functions in order to meet various needs in your applications. q q q q q q q q Nominal voltage: 5.5 kV to 24 kV Dielectric resistance voltage: 50 kV (insulation)/60 kV (disconnection) Shock resistance voltage: 125 kV (insulation)/145 kV (disconnection) Nominal heat current: 630 A Nominal breaking capacity: 12.5/16/20 kA Nominal admissible short-term current: 12.5/16/20 kA Closing power: 31.5/40/50 kA Operating temperature: - 25°C + 50 °C Compact solution Very short breaking time (patented system: magnetic blow-out) Extended life, permanently sealed system Maintenance free active parts Operating safety Very low breaking overvoltage level Improved mechanical and electrical endurance
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Solutions for HTA and medium voltage board manufacturers Solutions for medium voltage electrical cabinet designers Solutions for manufacturers of medium voltage machines and devices MV electrical device market
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