hrw11-10 200a跌落式熔断器

《hrw11-10 200a跌落式熔断器》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。

1、百度推荐厂家：乐清市轩泰电气科技有限公司电话：0577-6275993313757772932诚信经营质优价廉HRW11-10200A跌落式熔断器及拉负荷跌落式熔断器是户外高压保护电器。它装置在配电变压器高压侧或配电线支干线路上、用作变压器和线路的短路、过载保护及分、合负荷电流。跌落式熔断器由绝缘支架和熔丝管二部份组成，静触头安装在绝缘支架两端，动触头安装在熔丝管两端，熔丝管由内层的消弧管和外层环氧玻璃管组成。拉负荷跌落式熔断器增加弹·陛辅助触头及灭弧罩，用以分、合负荷电流。 跌落式熔断器在正常运行时，熔丝管借助熔丝张紧后形成闭合位置。当系统发生故障时，故障电

2、流使熔丝迅速熔断，并形成电弧，消弧管受电弧灼热，分解出大量的气体，使管内形成很高压力，并沿管道形成纵吹，电弧被迅速拉长而熄灭。熔丝熔断后，下部动触头失去张力而下翻，锁紧机构释放熔丝管，熔丝管跌落，形成明显的开断位置。当需要要拉负荷时，用绝缘杆拉开动触头，此时主动、静助触头仍然接触，继续用绝缘杆拉动触头，辅助触头也分离，在辅助触头之间产生电弧，电弧在灭弧罩狭缝中被拉长，同时灭弧罩产生气体，在电流过零时，将电弧熄灭。Drop-outfusecutoutandloadswitchingfusecutoutareofoutdoorusedhighvoltageprot

3、ectivedevice.Tobeconnectewithincomingfeederofdistributiontransformerordistributionlinesitmainlyprotectdansformerorlinesfromshodcircuitandoverload.andon/offloadingcurrent.Drop.outfusecutoutiscomposedofinsulatlnsulatorsuppodsandfusetube.staticcontactsisfixedontwosidesofinsulatorsuppor

4、tandmovingcontactjSinstalledontwoendsoffusetube.FusetubeiScomposedofinsidearc-extinguishingtube,outerphenoliccompoundpapertubeorepoxglasstube.Loadswitchingfusecutoutprovidesenforedelasticauxiliarycon.tactsandarcextinguishingexclosureforswitchingon/offloadingcurrent.Alnormallyworking

5、viafuselinktightenedlhefusetubeiSfixedtoformupofcloseposition.1ncasesystemoccurefaults,faultcurrenlresultinfusemeltimmediatelyandtakeplaceelectricarc.whichletarc.extin.guishingtubebeingheatedandexplodealotofgas.Thiswillproducehighpressureandblowoffthearcalongwithtube.Afterfuselinkme

6、ltmovingcontacthasnotightenedshrengthagain,mechanismislochedandfusetubedropout.Cutoutnowisinopenposition.Whenitneedstoswitchnoffduringcutoutloadin9,operatorshallviainsulatingoperatingbarpullthemovingcontact,atitsbeginningmaincontactandauxiliarystaticcontactiscontactedstill.Whilingpu

7、llingtheauxiliarycontactissepa-ratedbetweenauxiliarycontactsthereoccurelectricarcandthearcwillbelengtheneinarcextinguishingenclosuregapandmeanwhilearc-ex-tinguishingexplodegastoblowoffthearcduringcurrentpassingzero.编号No.部件名称Description1螺母Nut2螺杆　LongBolts3安装支架Ⅰ　　　MountingBracketⅠ4安装支

8、架Ⅱ　　　MountingBracke