用途Application

GW4型户外交流高压隔离开关是双柱式三相交流50Hz户外高压开关设备，用于电压10-220kV的电力系统中，供在有电压无负载时分合电路之用，以及对被检修的高压母线、断路器等电器设备与带电的高压线路进行电路隔离之用。其中防污型的隔离开关可满足重污秽地区用户的要求，并可以有效地解决隔离开关在运行中出现的污闪问题。

隔离开关属双柱水平开启式，各单级都由基座、支柱绝缘子、出线座及触头等部分组成，两支柱绝缘瓷瓶相互平行地安装在基座两端的轴承上，且与基座垂直。主导电部分分别安装在两支柱绝缘瓷瓶上方，随支柱绝缘瓷瓶做90°转动。

隔离开关的每个轴承座内装有轴装配，两轴装配间通过连板、调节螺杆等连接传动。

中间触头部分的触指成对装配，采用自力型触指，其形式为转入式，以减少分、合闸时触头与触指间的磨损，提高使用寿命。

隔离开关附有接地开关时，主导电回路与接地开关的连锁用基座上的扇形板与弧形板保证，在主导电回路合闸时，接地开关不可合闸，接地开关合闸时，主导电回路不可合闸。配用CS8-6D时隔离开关与接地开关连锁由机构上的连锁板实现。

GW4 Outdoor AC high voltage isolation switch is a two-column three-phase AC 50Hz outdoor high voltage switchgear for power systemvoltage 10-220kV,the supply voltage at no load for hours together circuits,as well as being on the high voltage bus overhaul ,circuit breakersand other electrical equipment and charged high voltage lines for circuit isolation.Pollution prevention isolating switch which can meet therequirements of users in the region re-contamination,and can effectively address the isolation switch in the operation of the flashover problem.Isolation switch is open double-column horizontal type,the composition of each single stage by the dock,post insulators,outlet andcontact other parts of the seat,the two pillars of the insulating porcelain mounted parallel to each other on both ends of the bearing base,andthe base vertical .Leading electrical part were installed in the two pillars above the porcelain insulator,porcelain insulator with pillars do 90°rotation.

Each bearing has a built-in isolation switch shaft assembly,the assembly between the two axes by connecting plates,screws and other

connecting the drive to adjust.

Refers to the middle portion of the contact pairs of the contact assembly,using self-elastic contact finger in the form of roll-in,in order to

reduce opening and closing the contacts and the contact fingers of wear and improve life.

Disconnectors with earthing switch,fan-shaped plate leading electrical circuit and grounding switch and interlock with the base of thecurved panels that switch on when leading electrical circuit,grounding switch is not closing,when the grounding switch is closed,the leadingelectrical circuit can not be closed.Chain plate chain disconnectors and earthing switches on the realization by the agency when equipped withCS8-6D.

型号及含义Model and Implication

产品特点

隔离开关采用双柱中开、触头转入式结构、具有自清洁触头的能力，提高了接触可靠性；

触指采用高强度、高导电率、高弹性的新型材料制造。依靠触指自身的弹力夹紧触头，避免了目前因弹簧锈蚀、发热退火而引起的触头夹紧

力降低，接触电阻增加，触头发热加剧的恶性循环；

隔离开关转动部分按免维护的要求设计。转动座设计成密封结构，水汽、尘埃、有害气体无法进入，使轴承、二硫化钼锂基润滑脂永远工作在良好的环境中，轴承永不生锈、润滑脂无法流失，永不干涸，使隔离开关长期运行后的操作力矩不会增加。采用不锈钢轴销与无油自润滑轴承相配合结构；钢制件采用热镀锌，确保隔离开关操作灵活、轻便、可靠、永不锈蚀。

Isolating switch with double column,contact into open type structure,has the ability of self cleaning contact,improve the contact reliability;Finger made of new material with high strength,high conductivity,high elastic.Relying on the elastic contact finger clamping itself,to avoidthe spring corrosion,contact clamping fever caused by annealing

Force to reduce the contact resistance increases,the contact heat intensified the vicious spiral.

The rotating part according to the design requirements of the isolating switch maintenance free.The rotating seat designed seal structure,moisture,dust and harmful gas can not enter,bearing,molybdenum disulfide lithium base grease will never work in

A good environment,bearing,never rust,grease can not be lost,never dry up,the isolation switch operating torque will increase after longterm operation.Stainless steel shaft and oil-free self-lubricating bearing

With the structure of steel by hot dip galvanizing,ensure the isolation switch operation is flexible,portable and reliable,never rust.

技术参数 Technical Parameters

使用条件Normal Service Conditions

a.海拔高度：1000-2000m;

b.环境温度不高于+40℃,不低于-30℃(高寒地区不低于-40℃);

c.风压不超过700Pa(相当于风俗34m/s);

d.地震裂度不大于8度：

e.覆冰厚度不大于10mm:

f.安装场所应无易燃、易爆危险品、化学腐蚀及剧烈振动；

g.支柱绝缘子污秽等级；普通型为0级、防污型为Il级。

a.Altitude:1,000-2,000mb.

b.Ambient temperature:no more than 40℃ and no less than-30℃(no lessthan-40℃in alpine areas)

c.Wind pressure:<700Pa(equaling wind velocity of 34m/s)

d.Earthquake intensity:<8

e.Ice thickNess:<10mm

f.The installation location shall be free from flammable.explosive dangerousaricles,chemical corrosion and fierce vibration

g.The pollution grade of post insulator:O for general type and ll for pollutionresistance type