GW8-72.5/630A，GW8-126/630A中性点隔离开关，可以配放电间隙，避雷器，支柱，互感器等等。

   GW8-72.5/630A、GW8-126/630A，GW8系列中性点隔离开关，GW8-40.5、GW8-72.5、GW8-126W、GW8-35、GW8-63、GW8-110型中性点隔离开关系单相交流50Hz高压开关设备，额定电流：630A、1250A。所配用的操作机构为:CS8-5型手动操动机构或CX6型电动机操动机构；CS17-G型手动操动机构或CJ2、CJ5、CJ6、CJ12型电动机操动机构。

GW8型中性点隔离开关是交流50H的户外装置，供在无载荷情况下，分合变压器中性点联线之用。

GW8 type neutral point disconnecting switch is outdoor high-voltage equipment with 50Hz frequency. It is used for making and breaking the link of transformer’s neutral point under the condition without load. It is suitable for AC power-frequency network.

本产品分为普通型和防污型两种

This product pides into two kinds such as the ordinary type and the anti-pollution type.

本产品配用的手动操作机构为CS8-5G型，电动操作机构为CX-6型。

According to user’s demand，it can use cooperatively the CS8-5G type manual operation mechanism or the CX-6 type electro-control mechanism

1.2 使用条件环境  Application Ambient Condition

a 海拔不超过1000m;

Altitude height is not more than1000m.

  b 周围空气温度：上限+40度，下限-40度;

Environment temperature is from-40℃to +40℃.

  c 风压不超过700Pa;

    Wind pressure is not more than700Pa.

  d 地震烈度不超过8度；

 Earthquake intensity is not more than 8 grades.

  e 覆冰厚度不大于10mm;

    The thickness of ice is less than 10mm.

  f 支柱绝缘子污秽等级：普通型为0级。

 Insulator’s pollution level: Normal class is 0.

2 、主要技术参数

  Technical Data

主要技术参数见下表：
Main technical data as follows:

3、 原理与结构

Principle and Structure

本隔离开关（外形见图1）由底座，支柱绝缘子和导电部分组成，在绝缘支柱的上方装有静触头和联接母线的接线板，在支柱绝缘子和绝缘支柱之间有底座、动触头、操作拐臂、操作绝缘子，操作机构通过连杆、操作绝缘子、操作拐臂与动触头相连。

GW8 type neutral point disconnecting switch (shape see Fig.1) mainly consists of base, insulators and electric conduction part, on the insulating support fitted with static contact and wir​ing board which connect generatrix. Between support insulator and Support Insulator, there are base, moving contact, operating turn arm and operating insulator. operating mechanism and moving contact are joined b​y connecting ​rod, ope​rating ins​ulator and operating turn arm.