概述Product Structure 

LW8-40.5户外交流高压六氟化硫断路器是三相交流50HZ的户外高压电器，以SF6气体作为灭弧和绝缘介质，采用压气式灭弧结构，开断能力特强，可广泛用于

额定电压40.5kV的电力系统中，作为变电站，发电厂开合额定电流、短路电流、并可作为联络断路器及切合电容器组用。内附电流互感器供测量与保护用，是由断路器的理想更新换代产品。

The LW8-40.5AC HV SF6 breaker is kind of 3 phase AC 50HZ outdoor typebreakers.The gas of the SF6 is employed as the arc-extinguishing medium and thedielectric material.It uses the structure of pneumatic arc-extinguishing chamber,and the breaking performance is excellent.It can be widely used in the electricalsystem whose rated voltage is 40.5kV to control the rated current and short-circuitcurrent,connect the breaker and cut the current in capacitor banks.The currenttransformers inside are used for measuring and protecting the breaker.The

LW8-40.5 breaker is the regenerate type of oil type breaker.

型号及其含义Model description

结构特点Characteristic of structure

1.断路器为户外小型落地罐式结构，配用CT14弹簧操动机构；机构与本体连体安装，安装简单，调试方便，动作可靠，适用于频繁操作；机构寿命次数3000以上；

1.The breaker has the characteristics of small,outdoor type and with the console pot structure.It can match with CT14 spring operation mecha-nism.The spring operation mechanism associates with the main body,so the installation and debugging are convenient.Also it can be operatedfrequently and the mechanical life is not less than 3000times.

2.采用压气式灭弧结构，开断能力特强，40kA累计开断达12次，

2.The breaker uses pneumatic arc-extinguish chamber,so the breaking performance is excellent.The 40kA accumulative breaking times canreach to 12.

3.密封性能可靠。采用进口密封胶垫，动密封采用“V“型密封圈带弹簧压力补偿结构，互感器二次接线板由合资企业配套，确保年漏气率<0.5%;

3.The seal performance is reliable.The breaker uses imported sealed rubber insert.The dynamic seal uses structure of V shape grommet withspring pressure.The secondary terminal block is offered by the manufacturer as a set with the breaker to make sure that the annual leak rate

of SF6<0.5%。

4.内附电流互感器采用微晶合金高导瓷性能的材料，准确级次可达0.2级或0.2S级，根据用户需要，可内附12只互感器。切合空载长线50公里无重燃。

4.The iron core of the inner current transformer is made of materials with the performance of crystallite (alloy)high conduction magnetic.So theaccuracy class can reach up to 0.2 or 0.2s.12pieces of current transformers can be used inside as the clients'requirement.And it will not be-burnwhen switch zero load for 50kms.