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  • Zw20-12 outdoor high voltage vacuum circuit breaker

    Outdoor switchgear

    Scope of application :

    Load current, overload current and short circuit current of power system. It is suitable for the protection and control of substation, industrial and mining enterprises and urban and rural distribution network, especially for the places with frequent operation and urban network automation distribution network. This product is matched with the controller to meet the requirements of distribution automation system, and can fulfill the traditional recloser function reliably and effectively.
    product details
      An overview,
      Zw20-12 outdoor high voltage vacuum circuit breaker is rated voltage 12kV.Three-phase ac 50Hz outdoor high voltage switchgear.It is mainly used for breaking and closing load current,overload current and short circuit current of power system.It is suitable for the protection and control of substation,industrial and mining enterprises and urban and rural distribution network,especially for the places with frequent operation and urban network automation distribution network.This product is matched with the controller to meet the requirements of distribution automation system,and can fulfill the traditional recloser function reliably and effectively.It adopts mature box-type sealing structure and is filled with SF6 gas internally.It has good sealing performance and is not affected by the external environment.It is a maintainable product.Its spring operating mechanism adopts direct chain main drive and multistage tripping system,with high operation reliability.
      Ii.Environmental conditions
      1.Ambient air temperature:upper limit+40℃,lower limit-40℃;
      2.Altitude:no more than 2000m;
      3.Wind pressure:no more than 700Pa(equivalent to wind speed of 34m/s);
      4,earthquake intensity:not more than 8 degrees;
      5,filthy level:Ⅳlevel;
      6.Daily temperature difference:no more than 25 degrees;
      7.Relative humidity:daily average is no more than 95%and monthly average is no more than 90%
      8.No inflammable,explosion hazard,chemical corrosion and violent vibration place.
      Iii.Model and meaning
      4.Structural features
      1.Ideal equipment for urban and rural power grid transformation,which can be matched with the controller to realize remote control,remote signal,remote measurement and remote adjustment,and realize the function of"four remote";
      2,flexible and convenient operation:electric energy storage,electric separation and closing,manual energy storage,manual separation and closing,and close or long distance operation;
      3.Excellent breaking performance:25kA rated short circuit breaking current up to 30 times;
      4.Low operating power and high reliability:the operating power of the newly designed miniaturized spring operating mechanism(about 30W)is reduced to the lowest level;
      5.Maintenance-free:the main circuit of circuit breaker,secondary components and operating mechanism are sealed in SF6 gas(zero voltage meter),free from external environment,stable performance,reliable,maintenance-free.
      6,reliable sealing performance,using mature sealing structure technology,not easy to produce leakage.
      7.Unique way of incoming and outgoing wires:silicone rubber sleeve is used to make the insulation distance between terminals abundant and the external insulation performance excellent;
      8.Excellent safety performance:explosion-proof device is installed on the top of the box,so that no high-temperature gas or spatter will leak out even in case of internal failure.
      9.Flexible installation mode:it can be installed by either lifting on the pole or sitting on the pole.
      Technical parameters


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