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ZW20-12 outdoor columns of intelligent vacuum circuit breaker is the highest rated voltage for outdoor 12kV,50Hz three-phase AC electrical distribution equipment. Mainly used for distribution network outage, closing in the load current, over-current and short-circuit current. Applicable to substations and industrial and mining enterprises power distribution system used for protection and control, better suited for rural power grids and frequent operation of places, especially suitable for the city network, rural power grid reconstruction needs.
ZW20-12-pin-type circuit breaker three-phase structure, breaking performance is stable and reliable, with no fire and explosion hazards, maintenance-free, small size, light weight, long life and other characteristics. Full close structure, good sealing performance, helps improve moisture and condensation resistance, especially suitable for cold or damp areas. Pillars and three-phase current transformers outdoor epoxy resin imported solid insulation, resistant to high temperature, UV-resistant, aging characteristics. Operating mechanism using miniaturized spring operating mechanism, during opening and low energy consumption; the transmission direct drive transmission, closing fewer parts, high reliability. Operating mechanism placed under the sealed box, solved the problem of corrosion of the body, improve the reliability of the body. Circuit-breaker opening and closing operation can be manual or electric operation and remote operation. Matching with the controller for distribution automation, or coinciding with the Recloser controller coordination group. Circuit breaker installation of two-phase or three-phase CT, for over current automatic tripping of protection and analysis of intelligent controller for information.
Comply with standard
ZW20-12 meet GB1984-1989, GB/T11022-1999, GB311.1-1997, and GB3309-1989, and DL/T403-2000
The products are widely used in substations and industrial and mining enterprises power distribution system used for protection and control, better suited for rural power grids and frequent operation of places, especially suitable for the city network, rural power grid reconstruction needs.