Zw43-12 outdoor high voltage vacuum circuit breaker
Outdoor switchgear
Scope of application ：
It is mainly used for breaking and closing load current, overload current and short circuit current of power system. Suitable for protection and control in substation and power distribution system of industrial and mining enterprises.
product details
Zw43-12 outdoor vacuum circuit breaker is a three-phase ac 50Hz,rated voltage 12kV outdoor high voltage switchgear.It is mainly used for breaking and closing load current,overload current and short circuit current of power system.Suitable for protection and control in substation and power distribution system of industrial and mining enterprises.This circuit breaker adopts column type,dry structure,reliable insulation,long electric life,maintenance-free,especially suitable for frequent operation.It can also operate the sectional switch of the power grid.After installing the controller,it can realize the automation of distribution network.
This product conforms to GB/T1984"high voltage ac circuit breaker",GB/T1985"ac high isolation switch and grounding switch"and GB/T11022"common technical requirements of high voltage switching equipment and control equipment standard"and other standard requirements.
Ii.Environment clause
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,the circuit breaker by a new miniaturized design,using a completely closed structure,unique arc extinguishing chamber packaging technology,good sealing performance,help to improve moisture-proof,anti-condensation performance,suitable for high temperature,wet areas.
2,the breaking performance of the circuit breaker is stable and reliable,with no combustion,safe,maintenance-free,small size,light weight,long service life and other characteristics.
3,the circuit breaker can be installed with phase CT,output two-phase current for functional control for information analysis,to achieve over-current protection function.
4,the circuit breaker is equipped with a gate inrush current elimination device(compound controller),not only to avoid inrush current arc misoperation,but also when normal work,the current trip device coil is not live,so the car trip device jitter may cause misoperation.
5,a circuit breaker is also configurable intelligent switch controller,a three-step current protection,zero sequence protection,reclosing,quick break protection and so on the many kinds of protection function,it supports a variety of communication protocol,allows a variety of communication network,can to local manual or remote control switch,also can through the network to realize the remote control from a distance,such as with corresponding a converter or section control device,can be used as the reclosing and section.
6.The operating mechanism is sealed inside the switch box,which can effectively avoid the corrosion of the mechanism caused by the long-term outdoor environment.
7,operating mechanism is novel,simple,reliable,small size,long mechanical life.
8,5,using vacuum arc extinguishing,solid insulation,small volume,light weight,large breaking capacity,high insulation level;
6.Manual tripping device:when the control system fails,manual tripping can be used for emergency tripping operation to reliably turn off the rated load current;
9.Position detector:the proximity switch is mounted on the linkage shaft.No mechanical components are required.
10.Switch shell is treated with stainless steel or plastic spray,with good corrosion resistance and climate resistance;
11.Disconnecting switch,forming visible fracture and reliable interlock,forming composite electrical appliances;
12.The controller realizes the functions of remote control,remote measurement,remote signal and remote adjustment.
Technical parameters
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