开户即送58体验金不限id

开户即送58体验金不限id

  • 开户即送58体验金不限id > 开户即送58体验金不限id
     
    电涌保护器(SPD)工作原理和结构

    DIANYONGBAOHUQI(Surge protection Device)SHIDIANZISHEBEILEIDIANFANGHUZHONGBUKEQUESHAODEYIZHONGZHUANGZHI,GUOQUCHANGCHENGWEI“BILEIQI”HUO“GUODIANYABAOHUQI”YINGWENJIANXIEWEISPD。DIANYONGBAOHUQIDEZUOYONGSHIBACUANRUDIANLIXIAN、XINHAOCHUANSHUXIANDESHUNSHIGUODIANYAXIANZHIZAISHEBEIHUOXITONGSUONENGCHENGSHOUDEDIANYAFANWEINEI,HUOJIANGQIANGDADELEIDIANLIUXIELIURUDI,BAOHUBEIBAOHUDESHEBEIHUOXITONGBUSHOUCHONGJIERSUNHUAI。

      DIANYONGBAOHUQIDELEIXINGHEJIEGOUANBUTONGDEYONGTUYOUSUOBUTONG,DANTAZHISHAOYINGBAOHANYIGEFEIXIANXINGDIANYAXIANZHIYUANJIAN。YONGYUDIANYONGBAOHUQIDEJIBENYUANQIJIANYOU:FANGDIANJIANXI、CHONGQIFANGDIANGUAN、YAMINDIANZU、YIZHIERJIGUANHEELIUXIANQUANDENG。

      YI、SPDDEFENLEI:

       1、ANGONGZUOYUANLIFEN:

       1.KAIGUANXING:QIGONGZUOYUANLISHIDANGMEIYOUSHUNSHIGUODIANYASHICHENGXIANWEIGAOZUKANG,DANYIDANXIANGYINGLEIDIANSHUNSHIGUODIANYASHI,QIZUKANGJIUTUBIANWEIDIZHI,YUNXULEIDIANLIUTONGGUO。YONGZUOCILEIZHUANGZHISHIQIJIANYOU:FANGDIANJIANXI、QITIFANGDIANGUAN、ZHALIUJINGTIGUANDENG。

       2.XIANYAXING:QIGONGZUOYUANLISHIDANGMEIYOUSHUNSHIGUODIANYASHIWEIGAOZURAO,DANSUIDIANYONGDIANLIUHEDIANYADEZENGJIAQIZUKANGHUIBUDUANJIANXIAO,QIDIANLIUDIANYATEXINGWEIQIANGLIEFEIXIANXING。YONGZUOCILEIZHUANGZHIDEQIJIANYOU:YANGHUAXIN、YAMINDIANZU、YIZHIERJIGUAN、XUEBENGERJIGUANDENG。

       3.FENLIUXINGHUOELIUXING

      FENLIUXING:YUBEIBAOHUDESHEBEIBINGLIAN,DUILEIDIANMAICHONGCHENGXIANWEIDIZUKANG,ERDUIZHENGCHANGGONGZUOPINLVCHENGXIANWEIGAOZUKANG。

      ELIUXING:YUBEIBAOHUDESHEBEICHUANLIAN,DUILEIDIANMAICHONGCHENGXIANWEIGAOZUKANG,ERDUIZHENGCHANGDEGONGZUOPINLVCHENGXIANWEIDIZUKANG。

      YONGZUOCILEIZHUANGZHIDEQIJIANYOU:ELIUXIANQUAN、GAOTONGLVBOQI、DITONGLVBOQI、1/4BOZHANGDUANLUQIDENG。

      ANYONGTUFEN:(1)DIANYUANBAOHUQI:JIAOLIUDIANYUANBAOHUQI、ZHILIUDIANYUANBAOHUQI、KAIGUANDIANYUANBAOHUQIDENG。

           (2)XINHAOBAOHUQI:DIPINXINHAOBAOHUQI、GAOPINXINHAOBAOHUQI、TIANKUIBAOHUQIDENG。

      ER、SPDDEJIBENYUANQIJIANJIQIGONGZUOYUANLI:

       1.FANGDIANJIANXI(YOUCHENGBAOHUJIANXI):

      TAYIBANYOUBAOLUZAIKONGQIZHONGDELIANGGENXIANGGEYIDINGJIANXIDEJINSHUBANGZUCHENG,QIZHONGYIGENJINSHUBANGYUSUOXUBAOHUSHEBEIDEDIANYUANXIANGXIANL1HUOLINGXIAN(N)XIANGLIAN,LINGYIGENJINSHUBANGYUJIEDIXIAN(PE)XIANGLIANJIE,DANGSHUNSHIGUODIANYAXILAISHI,JIANXIBEIJICHUAN,BAYIBUFENGUODIANYADEDIANHEYINRUDADI,BIMIANLEBEIBAOHUSHEBEISHANGDEDIANYASHENGGAO。ZHEIZHONGFANGDIANJIANXIDELIANGJINSHUBANGZHIJIANDEJULIKEANXUYAODIAOZHENG,JIEGOUJIAOJIANDAN,QIQUEDIANSHIMIEHUXINGNENGCHA。GAIJINXINGDEFANGDIANJIANXIWEIJIAOXINGJIANXI,TADEMIEHUGONGNENGJIAOQIANZHEWEIHAO,TASHIKAOHUILUDEDIANDONGLIFZUOYONGYIJIREQILIUDESHANGSHENGZUOYONGERSHIDIANHUXIMIEDE。

       2.QITIFANGDIANGUAN:

      TASHIYOUXIANGHULIKAIDEYIDUILENGYINBANFENGZHUANGZAICHONGYOUYIDINGDEDUOXINGQITI(Ar)DEBOLIGUANHUOTAOCIGUANNEIZUCHENGDE。WEILETIGAOFANGDIANGUANDECHUFAGAILV,ZAIFANGDIANGUANNEIHAIYOUZHUCHUFAJI。ZHEIZHONGCHONGQIFANGDIANGUANYOUERJIXINGDE,YEYOUSANJIXINGDE,

      QITIFANGDIANGUANDEJISHUCANSHUZHUYAOYOU:ZHILIUFANGDIANDIANYAUdc;CHONGJIFANGDIANDIANYAUp(YIBANQINGKUANGXIAUp≈(2~3)Udc;GONGPINERSHOUDIANLIUIn;CHONGJIERSHOUDIANLIUIp;JUEYUANDIANZUR(>109Ω);JIJIANDIANRONG(1-5PF)

      QITIFANGDIANGUANKEZAIZHILIUHEJIAOLIUTIAOJIANXIASHIYONG,QISUOXUANYONGDEZHILIUFANGDIANDIANYAUdcFENBIERUXIA:ZAIZHILIUTIAOJIANXIASHIYONG:Udc≥1.8U0(U0WEIXIANLUZHENGCHANGGONGZUODEZHILIUDIANYA)

      ZAIJIAOLIUTIAOJIANXIASHIYONG:U dc≥1.44Un(UnWEIXIANLUZHENGCHANGGONGZUODEJIAOLIUDIANYAYOUXIAOZHI)

      3.YAMINDIANZU:

      TASHIYIZnOWEIZHUYAOCHENGFENDEJINSHUYANGHUAWUBANDAOTIFEIXIANXINGDIANZU,DANGZUOYONGZAIQILIANGDUANDEDIANYADADAOYIDINGSHUZHIHOU,DIANZUDUIDIANYASHIFENMINGAN。TADEGONGZUOYUANLIXIANGDANGYUDUOGEBANDAOTIP-NDECHUANBINGLIAN。YAMINDIANZUDETEDIANSHIFEIXIANXINGTEXINGHAO(I=CUαZHONGDEFEIXIANXINGXISHUα),TONGLIURONGLIANGDA(~2KA/cm2),CHANGTAIXIELOUDIANLIUXIAO(10-7~10-6A),CANYADI(QUJUEYUYAMINDIANZUDEGONGZUODIANYAHETONGLIURONGLIANG),DUISHUNSHIGUODIANYAXIANGYINGSHIJIANKUAI(~10-8s),WUXULIU。

      YAMINDIANZUDEJISHUCANSHUZHUYAOYOU:YAMINDIANYA(JIKAIGUANDIANYA)UN,CANKAODIANYAUlma;CANYAUres;CANYABIK(K=Ures/UN);ZUIDATONGLIURONGLIANGImax;XIELOUDIANLIU;XIANGYINGSHIJIAN。

      YAMINDIANZUDESHIYONGTIAOJIANYOU:YAMINDIANYA:UN≥[(√2×1.2)/0.7]U0(U0WEIGONGPINDIANYUANEDINGDIANYA)

      ZUIXIAOCANKAODIANYA:Ulma≥(1.8~2)Uac (ZHILIUTIAOJIANXIASHIYONG)

       Ulma≥(2.2~2.5)Uac(ZAIJIAOLIUTIAOJIANXIASHIYONG,UacWEIJIAOLIUGONGZUODIANYA)

      YAMINDIANZUDEZUIDACANKAODIANYAYINGYOUBEIBAOHUDIANZISHEBEIDENAISHOUDIANYALAIQUEDING,YINGSHIYAMINDIANZUDECANYADIYUBEIBAOHUDIANZISHEBEIDEERSUNDIANYASHUIPING,JI(Ulma)max≤Ub/K,SHANGSHIZHONGKWEICANYABI,UbWEIBEIBAOHUSHEBEIDEERSUNDIANYA。

      4.YIZHIERJIGUAN:

      YIZHIERJIGUANJUYOUQIANWEIXIANYAGONGNENG,TASHIGONGZUOZAIFANXIANGJICHUANQU,YOUYUTAJUYOUQIANWEIDIANYADIHEDONGZUOXIANGYINGKUAIDEYOUDIAN,TEBIESHIHEYONGZUODUOJIBAOHUDIANLUZHONGDEZUIMOJIJIBAOHUYUANJIAN。YIZHIERJIGUANZAIJICHUANQUNEIDEFUANTEXINGKEYONGXIASHIBIAOSHI:I=CUα,SHANGSHIZHONGαWEIFEIXIANXINGXISHU,DUIYUQINAERJIGUANα=7~9,ZAIXUEBENGERJIGUANα=5~7。

      YIZHIERJIGUANDEJISHUCANSHUZHUYAOYOU

      (1)EDINGJICHUANDIANYA,TASHIZHIZAIZHIDINGFANXIANGJICHUANDIANLIU(CHANGWEIlma)XIADEJICHUANDIANYA,ZHEIYUQINAERJIGUANEDINGJICHUANDIANYAYIBANZAI2.9V~4.7VFANWEINEI,ERXUEBENGERJIGUANDEEDINGJICHUANDIANYACHANGZAI5.6V~200VFANWEINEI。

      (2)ZUIDAQIANWEIDIANYA:TASHIZHIGUANZIZAITONGGUOGUIDINGBOXINGDEDADIANLIUSHI,QILIANGDUANCHUXIANDEZUIGAODIANYA。

      (3)MAICHONGGONGLV:TASHIZHIZAIGUIDINGDEDIANLIUBOXING(RU10/1000μs)XIA,GUANZILIANGDUANDEZUIDAQIANWEIDIANYAYUGUANZIZHONGDIANLIUDENGZHIZHIJI。

      (4)FANXIANGBIANWEIDIANYA:TASHIZHIGUANZIZAIFANXIANGXIELOUQU,QILIANGDUANSUONENGSHIJIADEZUIDADIANYA,ZAICIDIANYAXIAGUANZIBUYINGJICHUAN。CIFANXIANGBIANWEIDIANYAYINGMINGXIANGAOYUBEIBAOHUDIANZIXITONGDEZUIGAOYUNXINGDIANYAFENGZHI,YEJIBUNENGZAIXITONGZHENGCHANGYUNXINGSHICHUYURUODAOTONGZHUANGTAI。

      (5)ZUIDAXIELOUDIANLIU:TASHIZHIZAIFANXIANGBIANWEIDIANYAZUOYONGXIA,GUANZIZHONGLIUGUODEZUIDAFANXIANGDIANLIU。

      (6)XIANGYINGSHIJIAN:10-11s

      5.ELIUXIANQUAN:ELIUXIANQUANSHIYIGEYITIEYANGTIWEICIXINDEGONGMOGANRAOYIZHIQIJIAN,TAYOULIANGGECHICUNXIANGTONG,ZASHUXIANGTONGDEXIANQUANDUICHENGDIRAOZHIZAITONGYIGETIEYANGTIHUANXINGCIXINSHANG,XINGCHENGYIGESIDUANQIJIAN,YAODUIYUGONGMOXINHAOCHENGXIANCHUDADIANGANJUYOUYIZHIZUOYONG,ERDUIYUCHAMOXINHAOCHENGXIANCHUHENXIAODELOUDIANGANJIHUBUQIZUOYONG。ELIUXIANQUANSHIYONGZAIPINGHENGXIANLUZHONGNENGYOUXIAODIYIZHIGONGMOGANRAOXINHAO(RULEIDIANGANRAO),ERDUIXIANLUZHENGCHANGCHUANSHUDECHAMOXINHAOWUYINGXIANG。

      ZHEIZHONGELIUXIANQUANZAIZHIZUOSHIYINGMANZUYIXIAYAOQIU:

       1)RAOZHIZAIXIANQUANCIXINSHANGDEDAOXIANYAOXIANGHUJUEYUAN,YIBAOZHENGZAISHUNSHIGUODIANYAZUOYONGXIAXIANQUANDEZAJIANBUFASHENGJICHUANDUANLU。

       2)DANGXIANQUANLIUGUOSHUNSHIDADIANLIUSHI,CIXINBUYAOCHUXIANBAOHE。

       3)XIANQUANZHONGDECIXINYINGYUXIANQUANJUEYUAN,YIFANGZHIZAISHUNSHIGUODIANYAZUOYONGXIALIANGZHEZHIJIANFASHENGJICHUAN。

       4)XIANQUANYINGJINKENENGRAOZHIDANCENG,ZHEIYANGZUOKEJIANXIAOXIANQUANDEJISHENGDIANRONG,ZENGQIANGXIANQUANDUISHUNSHIGUODIANYADEERSHOUNENGLI。

      6. 1/4BOZHANGDUANLUQI

       1/4BOZHANGDUANLUQISHIGENJULEIDIANBODEPINPUFENXIHETIANKUIXIANDEZHUBOLILUNSUOZHIZUODEWEIBOXINHAODIANYONGBAOHUQI,ZHEIZHONGBAOHUQIZHONGDEJINSHUDUANLUBANGZHANGDUSHIGENJUGONGZUOXINHAOPINLV(RU900MHZHUO1800MHZ)DE1/4BOZHANGDEDAXIAOLAIQUEDINGDE。CIBINGLIANDEDUANLUBANGZHANGDUDUIYUGAIGONGZUOXINHAOPINLVLAISHUO,QIZUKANGWUQIONGDA,XIANGDANGYUKAILU,BUYINGXIANGGAIXINHAODECHUANSHU,DANDUIYULEIDIANBOLAISHUO,YOUYULEIDIANNENGLIANGZHUYAOFENBUZAIn+KHZYIXIA,CIDUANLUBANGDUIYULEIDIANBOZUKANGHENXIAO,XIANGDANGYUDUANLU,LEIDIANNENGLIANGJIBEIXIEFANGRUDI。

      YOUYU1/4BOZHANGDUANLUBANGDEZHIJINGYIBANWEIJIHAOMI,YINCINAICHONGJIDIANLIUXINGNENGHAO,KEDADAO30KA(8/20μs)YISHANG,ERQIECANYAHENXIAO,CICANYAZHUYAOSHIYOUDUANLUBANGDEZISHENDIANGANSUOYINQIDE,QIBUZUZHICHUSHIGONGPINDAIJIAOZHAI,DAIKUANYUEWEI2%~20%ZUOYOU,LINGYIGEQUEDIANSHIBUNENGDUITIANKUISHESHIJIAZHILIUPIANZHI,SHIMOUXIEYINGYONGSHOUDAOXIANZHI。

      SAN、SPDDEJIBENDIANLU

      电涌保护器的电路根据不同需要,有不同的形式,其基本元器件就是上面介绍的几种,一个技术精通的防雷产品研究工作者,可设计出五花八门的电路,好似一盒积木可搭出不同的结构图案。研制出既有效又性能价格比好的产品,是防雷工作者的重任。

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