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A complete line of disconnectors for 750V, 1500V and 3000V DC applications is available for a wide range of currents starting from 1000A up to 6000A. Both one or two-pole versions, with automatic earthing at disconnector opening with simultaneous or interlocked control, are available. Typical applications in DC Traction Power Supply Systems, are the two-pole disconnectors used at depot exit and the two-pole disconnector used to isolate the rectifier: this disconnector is placed in the Rectifier cubicle offered by COET. The high value of short-time withstand current (50kA-70kA-
100kA) makes the SFI suitable to the most severe duty. A large number of configurations and options is available to customise the product according to the different requirements,
in particular:
• Change-over between two or more lines.
• Motorised or Pneumatic control mechanism with manual emergency operation.
• Key and electromechanical interlocks.
• Earthing blades interlocked or simutaneous.
• Auxiliary contacts.
• Shaft extensions and transmission bevel gear.
