1.高(gao)压(ya)(ya)(ya)开(kai)(kai)关(guan)(guan)柜(ju)(ju)(ju)(ju)(ju)(ju)KYN28中(zhong)(zhong)置(zhi)(zhi)(zhi)(zhi)(zhi)柜(ju)(ju)(ju)(ju)(ju)(ju)，稳定可靠的XGN15环(huan)(huan)网(wang)(wang)(wang)(wang)柜(ju)(ju)(ju)(ju)(ju)(ju)2.KYN28中(zhong)(zhong)置(zhi)(zhi)(zhi)(zhi)(zhi)柜(ju)(ju)(ju)(ju)(ju)(ju)，XGN15环(huan)(huan)网(wang)(wang)(wang)(wang)柜(ju)(ju)(ju)(ju)(ju)(ju)，高(gao)压(ya)(ya)(ya)电(dian)(dian)(dian)(dian)(dian)力(li)系统的安全守护者3.高(gao)压(ya)(ya)(ya)开(kai)(kai)关(guan)(guan)柜(ju)(ju)(ju)(ju)(ju)(ju)KYN28中(zhong)(zhong)置(zhi)(zhi)(zhi)(zhi)(zhi)柜(ju)(ju)(ju)(ju)(ju)(ju)，XGN15环(huan)(huan)网(wang)(wang)(wang)(wang)柜(ju)(ju)(ju)(ju)(ju)(ju)，智能(neng)能(neng)源管理的优先4.XGN15环(huan)(huan)网(wang)(wang)(wang)(wang)柜(ju)(ju)(ju)(ju)(ju)(ju)，KYN28中(zhong)(zhong)置(zhi)(zhi)(zhi)(zhi)(zhi)柜(ju)(ju)(ju)(ju)(ju)(ju)，高(gao)压(ya)(ya)(ya)电(dian)(dian)(dian)(dian)(dian)力(li)传输(shu)的强大支持5.高(gao)压(ya)(ya)(ya)开(kai)(kai)关(guan)(guan)柜(ju)(ju)(ju)(ju)(ju)(ju)KYN28中(zhong)(zhong)置(zhi)(zhi)(zhi)(zhi)(zhi)柜(ju)(ju)(ju)(ju)(ju)(ju)，XGN15环(huan)(huan)网(wang)(wang)(wang)(wang)柜(ju)(ju)(ju)(ju)(ju)(ju)，高(gao)效能(neng)源分配的利(li)器6.XGN15环(huan)(huan)网(wang)(wang)(wang)(wang)柜(ju)(ju)(ju)(ju)(ju)(ju)，KYN28中(zhong)(zhong)置(zhi)(zhi)(zhi)(zhi)(zhi)柜(ju)(ju)(ju)(ju)(ju)(ju)，高(gao)压(ya)(ya)(ya)电(dian)(dian)(dian)(dian)(dian)力(li)控制的智能(neng)选(xuan)择7.高(gao)压(ya)(ya)(ya)开(kai)(kai)关(guan)(guan)柜(ju)(ju)(ju)(ju)(ju)(ju)KYN28中(zhong)(zhong)置(zhi)(zhi)(zhi)(zhi)(zhi)柜(ju)(ju)(ju)(ju)(ju)(ju)，XGN15环(huan)(huan)网(wang)(wang)(wang)(wang)柜(ju)(ju)(ju)(ju)(ju)(ju)，电(dian)(dian)(dian)(dian)(dian)力(li)系统的安全守护者8.XGN15环(huan)(huan)网(wang)(wang)(wang)(wang)柜(ju)(ju)(ju)(ju)(ju)(ju)，KYN28中(zhong)(zhong)置(zhi)(zhi)(zhi)(zhi)(zhi)柜(ju)(ju)(ju)(ju)(ju)(ju)，高(gao)压(ya)(ya)(ya)电(dian)(dian)(dian)(dian)(dian)力(li)传输(shu)的可靠伙伴9.高(gao)压(ya)(ya)(ya)开(kai)(kai)关(guan)(guan)柜(ju)(ju)(ju)(ju)(ju)(ju)KYN28中(zhong)(zhong)置(zhi)(zhi)(zhi)(zhi)(zhi)柜(ju)(ju)(ju)(ju)(ju)(ju)，XGN15环(huan)(huan)网(wang)(wang)(wang)(wang)柜(ju)(ju)(ju)(ju)(ju)(ju)，智能(neng)能(neng)源管理的10.XGN15环(huan)(huan)网(wang)(wang)(wang)(wang)柜(ju)(ju)(ju)(ju)(ju)(ju)，KYN28中(zhong)(zhong)置(zhi)(zhi)(zhi)(zhi)(zhi)柜(ju)(ju)(ju)(ju)(ju)(ju)，高(gao)压(ya)(ya)(ya)电(dian)(dian)(dian)(dian)(dian)力(li)控制的创(chuang)新解决(jue)方案浙江(jiang)朗(lang)晨电(dian)(dian)(dian)(dian)(dian)气(qi)有限公司为您提供 开(kai)(kai)关(guan)(guan)设备(bei)(bei)定制服务，有需要可以联系我司哦！浙江(jiang)铠(kai)装中(zhong)(zhong)置(zhi)(zhi)(zhi)(zhi)(zhi)移开(kai)(kai)式开(kai)(kai)关(guan)(guan)设备(bei)(bei)供应(ying)

什(shen)么是MNS低(di)(di)(di)压(ya)抽(chou)(chou)(chou)出(chu)(chu)(chu)(chu)(chu)式(shi)成(cheng)套？MNS低(di)(di)(di)压(ya)抽(chou)(chou)(chou)出(chu)(chu)(chu)(chu)(chu)式(shi)成(cheng)套是一(yi)种(zhong)低(di)(di)(di)压(ya)抽(chou)(chou)(chou)出(chu)(chu)(chu)(chu)(chu)式(shi)开(kai)(kai)关(guan)设(she)备(bei)(bei)的(de)型号。以(yi)(yi)下是对(dui)其中各个部分的(de)解释：MNS：这是该(gai)(gai)型号开(kai)(kai)关(guan)设(she)备(bei)(bei)的(de)名称。MNS是施耐德电气（SchneiderElectric）生产的(de)低(di)(di)(di)压(ya)抽(chou)(chou)(chou)出(chu)(chu)(chu)(chu)(chu)式(shi)开(kai)(kai)关(guan)设(she)备(bei)(bei)系列之一(yi)。低(di)(di)(di)压(ya)：这表示(shi)该(gai)(gai)开(kai)(kai)关(guan)设(she)备(bei)(bei)适(shi)用于(yu)低(di)(di)(di)电压(ya)配电系统(tong)，额(e)定(ding)电压(ya)通(tong)常在(zai)1000V及以(yi)(yi)下。抽(chou)(chou)(chou)出(chu)(chu)(chu)(chu)(chu)式(shi)：这说明该(gai)(gai)开(kai)(kai)关(guan)设(she)备(bei)(bei)的(de)电器(qi)(qi)组(zu)件(jian)可(ke)以(yi)(yi)进(jin)行(xing)抽(chou)(chou)(chou)出(chu)(chu)(chu)(chu)(chu)和插拔，以(yi)(yi)便(bian)于(yu)维(wei)护(hu)和更(geng)(geng)换(huan)。成(cheng)套：这表示(shi)MNS低(di)(di)(di)压(ya)抽(chou)(chou)(chou)出(chu)(chu)(chu)(chu)(chu)式(shi)成(cheng)套是一(yi)个完整的(de)系统(tong)，包括开(kai)(kai)关(guan)柜(ju)、电器(qi)(qi)元(yuan)件(jian)、联锁(suo)机构、仪表等组(zu)成(cheng)。综上所述，MNS低(di)(di)(di)压(ya)抽(chou)(chou)(chou)出(chu)(chu)(chu)(chu)(chu)式(shi)成(cheng)套是一(yi)种(zhong)低(di)(di)(di)压(ya)抽(chou)(chou)(chou)出(chu)(chu)(chu)(chu)(chu)式(shi)开(kai)(kai)关(guan)设(she)备(bei)(bei)型号，适(shi)用于(yu)低(di)(di)(di)电压(ya)配电系统(tong)。它具有抽(chou)(chou)(chou)出(chu)(chu)(chu)(chu)(chu)式(shi)的(de)电器(qi)(qi)组(zu)件(jian)设(she)计(ji)，以(yi)(yi)方便(bian)维(wei)护(hu)和更(geng)(geng)换(huan)，并且是一(yi)个成(cheng)套系统(tong)，包括开(kai)(kai)关(guan)柜(ju)、电器(qi)(qi)元(yuan)件(jian)及仪表等组(zu)件(jian)。吉林低(di)(di)(di)压(ya)抽(chou)(chou)(chou)出(chu)(chu)(chu)(chu)(chu)式(shi)成(cheng)套开(kai)(kai)关(guan)设(she)备(bei)(bei)哪家好开(kai)(kai)关(guan)设(she)备(bei)(bei)定(ding)制服务，就选(xuan)浙江朗晨电气有限(xian)公(gong)司，让您(nin)满意(yi)，欢迎您(nin)的(de)来电哦！

反(fan)(fan)(fan)孤(gu)岛(dao)(dao)保(bao)(bao)(bao)(bao)(bao)护(hu)(hu)(hu)装(zhuang)置(zhi)(zhi)(zhi)是(shi)一(yi)种用于保(bao)(bao)(bao)(bao)(bao)护(hu)(hu)(hu)电(dian)(dian)(dian)(dian)网(wang)(wang)不受分(fen)布(bu)式(shi)(shi)电(dian)(dian)(dian)(dian)源(yuan)(yuan)并(bing)网(wang)(wang)后产(chan)生(sheng)孤(gu)岛(dao)(dao)的(de)装(zhuang)置(zhi)(zhi)(zhi)。与防孤(gu)岛(dao)(dao)保(bao)(bao)(bao)(bao)(bao)护(hu)(hu)(hu)装(zhuang)置(zhi)(zhi)(zhi)不同(tong)的(de)是(shi)，反(fan)(fan)(fan)孤(gu)岛(dao)(dao)保(bao)(bao)(bao)(bao)(bao)护(hu)(hu)(hu)装(zhuang)置(zhi)(zhi)(zhi)位于分(fen)布(bu)式(shi)(shi)电(dian)(dian)(dian)(dian)源(yuan)(yuan)等(deng)设备的(de)电(dian)(dian)(dian)(dian)源(yuan)(yuan)侧，通过检测(ce)电(dian)(dian)(dian)(dian)网(wang)(wang)的(de)电(dian)(dian)(dian)(dian)压(ya)和频率等(deng)参数变(bian)化来保(bao)(bao)(bao)(bao)(bao)护(hu)(hu)(hu)电(dian)(dian)(dian)(dian)网(wang)(wang)。在分(fen)布(bu)式(shi)(shi)电(dian)(dian)(dian)(dian)源(yuan)(yuan)并(bing)网(wang)(wang)时(shi)，当电(dian)(dian)(dian)(dian)网(wang)(wang)发生(sheng)故(gu)障(zhang)导致电(dian)(dian)(dian)(dian)网(wang)(wang)电(dian)(dian)(dian)(dian)压(ya)或频率变(bian)化时(shi)，反(fan)(fan)(fan)孤(gu)岛(dao)(dao)保(bao)(bao)(bao)(bao)(bao)护(hu)(hu)(hu)装(zhuang)置(zhi)(zhi)(zhi)会立即(ji)停(ting)止(zhi)电(dian)(dian)(dian)(dian)源(yuan)(yuan)输(shu)出(chu)，以(yi)保(bao)(bao)(bao)(bao)(bao)证该区域不与电(dian)(dian)(dian)(dian)网(wang)(wang)形成孤(gu)岛(dao)(dao)。这样可以(yi)有(you)效避免孤(gu)岛(dao)(dao)运行时(shi)对电(dian)(dian)(dian)(dian)网(wang)(wang)造(zao)成的(de)不可预测(ce)风(feng)险和损失。反(fan)(fan)(fan)孤(gu)岛(dao)(dao)保(bao)(bao)(bao)(bao)(bao)护(hu)(hu)(hu)装(zhuang)置(zhi)(zhi)(zhi)一(yi)般分(fen)为(wei)主(zhu)(zhu)动(dong)(dong)(dong)反(fan)(fan)(fan)孤(gu)岛(dao)(dao)保(bao)(bao)(bao)(bao)(bao)护(hu)(hu)(hu)和被(bei)动(dong)(dong)(dong)反(fan)(fan)(fan)孤(gu)岛(dao)(dao)保(bao)(bao)(bao)(bao)(bao)护(hu)(hu)(hu)两种方式(shi)(shi)。主(zhu)(zhu)动(dong)(dong)(dong)反(fan)(fan)(fan)孤(gu)岛(dao)(dao)保(bao)(bao)(bao)(bao)(bao)护(hu)(hu)(hu)是(shi)指分(fen)布(bu)式(shi)(shi)电(dian)(dian)(dian)(dian)源(yuan)(yuan)等(deng)设备在并(bing)网(wang)(wang)时(shi)，主(zhu)(zhu)动(dong)(dong)(dong)检测(ce)电(dian)(dian)(dian)(dian)网(wang)(wang)参数，并(bing)做出(chu)相(xiang)(xiang)应的(de)保(bao)(bao)(bao)(bao)(bao)护(hu)(hu)(hu)动(dong)(dong)(dong)作。而(er)被(bei)动(dong)(dong)(dong)反(fan)(fan)(fan)孤(gu)岛(dao)(dao)保(bao)(bao)(bao)(bao)(bao)护(hu)(hu)(hu)是(shi)指分(fen)布(bu)式(shi)(shi)电(dian)(dian)(dian)(dian)源(yuan)(yuan)等(deng)设备只有(you)在检测(ce)到电(dian)(dian)(dian)(dian)网(wang)(wang)发生(sheng)故(gu)障(zhang)时(shi)，才会做出(chu)相(xiang)(xiang)应的(de)保(bao)(bao)(bao)(bao)(bao)护(hu)(hu)(hu)动(dong)(dong)(dong)作。反(fan)(fan)(fan)孤(gu)岛(dao)(dao)保(bao)(bao)(bao)(bao)(bao)护(hu)(hu)(hu)装(zhuang)置(zhi)(zhi)(zhi)能(neng)够有(you)效保(bao)(bao)(bao)(bao)(bao)护(hu)(hu)(hu)电(dian)(dian)(dian)(dian)网(wang)(wang)的(de)安全运行，提高系统的(de)可靠(kao)性和稳定性，是(shi)分(fen)布(bu)式(shi)(shi)电(dian)(dian)(dian)(dian)源(yuan)(yuan)并(bing)网(wang)(wang)的(de)重要保(bao)(bao)(bao)(bao)(bao)障(zhang)装(zhuang)置(zhi)(zhi)(zhi)之(zhi)一(yi)。

在当今越(yue)(yue)来越(yue)(yue)注(zhu)重环(huan)保(bao)(bao)的(de)社会，太(tai)阳(yang)能(neng)发(fa)电作为一(yi)(yi)种清洁能(neng)源(yuan)越(yue)(yue)来越(yue)(yue)受到(dao)重视，而光伏(fu)并(bing)(bing)(bing)网(wang)柜(ju)则(ze)是(shi)太(tai)阳(yang)能(neng)发(fa)电系(xi)(xi)统(tong)(tong)(tong)(tong)中的(de)重要组成部分。它是(shi)一(yi)(yi)种**电力设(she)备(bei)(bei)，用于(yu)太(tai)阳(yang)能(neng)发(fa)电系(xi)(xi)统(tong)(tong)(tong)(tong)中的(de)电能(neng)并(bing)(bing)(bing)网(wang)。上海长高继保(bao)(bao)科技的(de)并(bing)(bing)(bing)网(wang)柜(ju)主(zhu)要由刀闸(zha)(zha)、断路(lu)器及(ji)有关(guan)的(de)控(kong)制元件组成，由于(yu)其连接发(fa)电机(ji)(ji)系(xi)(xi)统(tong)(tong)(tong)(tong)和(he)电网(wang)系(xi)(xi)统(tong)(tong)(tong)(tong)，安装有完备(bei)(bei)的(de)并(bing)(bing)(bing)网(wang)保(bao)(bao)护(hu)装置(zhi)，起到(dao)发(fa)电机(ji)(ji)并(bing)(bing)(bing)网(wang)作用，而被(bei)称为“并(bing)(bing)(bing)网(wang)柜(ju)”。光伏(fu)并(bing)(bing)(bing)网(wang)柜(ju)可以保(bao)(bao)护(hu)、计(ji)量光伏(fu)发(fa)电的(de)总量，方便故障(zhang)检修管(guan)理(li)，提高发(fa)电系(xi)(xi)统(tong)(tong)(tong)(tong)的(de)安全性和(he)经济效益。具备(bei)(bei)检失压(ya)分闸(zha)(zha)、检有压(ya)合闸(zha)(zha)、过流(liu)(liu)保(bao)(bao)护(hu)、过电压(ya)保(bao)(bao)护(hu)、孤岛(dao)保(bao)(bao)护(hu)、防逆(ni)流(liu)(liu)保(bao)(bao)护(hu)、谐波治理(li)、无(wu)功补偿等(deng)多项保(bao)(bao)护(hu)功能(neng)，同时具备(bei)(bei)显示(shi)光伏(fu)发(fa)电系(xi)(xi)统(tong)(tong)(tong)(tong)运行参(can)数和(he)状态指示(shi)，被(bei)运用于(yu)光伏(fu)发(fa)电系(xi)(xi)统(tong)(tong)(tong)(tong)，与光伏(fu)并(bing)(bing)(bing)网(wang)逆(ni)变器配套(tao)使用可组成一(yi)(yi)套(tao)完整的(de)光伏(fu)发(fa)电系(xi)(xi)统(tong)(tong)(tong)(tong)解决方案开(kai)关(guan)设(she)备(bei)(bei)定制服务，就选浙江朗晨电气有限公司，让您(nin)满意，欢迎新(xin)老客户来电！

光(guang)(guang)(guang)伏发电(dian)(dian)(dian)是(shi)一种利(li)用(yong)光(guang)(guang)(guang)能(neng)转化为电(dian)(dian)(dian)能(neng)的(de)(de)可(ke)(ke)再生能(neng)源(yuan)(yuan)技术(shu)。它具有(you)以(yi)下优点：环(huan)保(bao)性：光(guang)(guang)(guang)伏发电(dian)(dian)(dian)不产生污染物和(he)(he)温(wen)室气(qi)体(ti)排(pai)放，对环(huan)境影响较小，不会导致空气(qi)、水(shui)源(yuan)(yuan)和(he)(he)土(tu)壤的(de)(de)污染。可(ke)(ke)再生性：太(tai)阳能(neng)是(shi)一种可(ke)(ke)再生能(neng)源(yuan)(yuan)，光(guang)(guang)(guang)伏发电(dian)(dian)(dian)利(li)用(yong)的(de)(de)是(shi)太(tai)阳能(neng)，因此能(neng)够持(chi)续(xu)供应电(dian)(dian)(dian)能(neng)。单独性：光(guang)(guang)(guang)伏发电(dian)(dian)(dian)可(ke)(ke)以(yi)在(zai)远(yuan)离(li)电(dian)(dian)(dian)网(wang)的(de)(de)地(di)(di)方使用(yong)，比如偏远(yuan)地(di)(di)区或岛屿，减少(shao)了(le)对传统电(dian)(dian)(dian)力(li)系统的(de)(de)依(yi)赖。易于维护(hu)：光(guang)(guang)(guang)伏发电(dian)(dian)(dian)系统的(de)(de)维护(hu)成本相(xiang)对较低(di)，一旦安(an)装(zhuang)完成，基本上只需要定(ding)期清洁和(he)(he)检查(cha)设备(bei)的(de)(de)状态。分布式发电(dian)(dian)(dian)：光(guang)(guang)(guang)伏发电(dian)(dian)(dian)可(ke)(ke)以(yi)分布式布局(ju)，即安(an)装(zhuang)在(zai)建筑(zhu)物的(de)(de)屋顶或地(di)(di)面(mian)上，充(chong)分利(li)用(yong)空间资源(yuan)(yuan)，降低(di)输电(dian)(dian)(dian)损(sun)耗。浙江(jiang)朗晨电(dian)(dian)(dian)气(qi)有(you)限公司开关设备(bei)定(ding)制服务获得众多用(yong)户(hu)的(de)(de)认可(ke)(ke)。黑龙(long)江(jiang)XGN口-12箱式固定(ding)交流金属封闭开关设备(bei)价格(ge)

开(kai)关(guan)设备(bei)定制服务(wu)，就(jiu)选浙江(jiang)朗晨电气有限(xian)公司，让(rang)您(nin)满意，期待(dai)您(nin)的光临！浙江(jiang)铠装中置(zhi)移(yi)开(kai)式开(kai)关(guan)设备(bei)供应

KYN28A-12(GSZ1)金(jin)属(shu)(shu)(shu)(shu)铠(kai)装(zhuang)(zhuang)中(zhong)(zhong)(zhong)置(zhi)移(yi)开(kai)(kai)式(shi)是(shi)一(yi)种(zhong)低压配(pei)电(dian)柜(ju)的(de)(de)(de)型(xing)号。以(yi)下是(shi)对其中(zhong)(zhong)(zhong)各个(ge)部分(fen)(fen)的(de)(de)(de)解(jie)释：KYN28A-12：这(zhei)个(ge)部分(fen)(fen)是(shi)配(pei)电(dian)柜(ju)的(de)(de)(de)型(xing)号。KYN28A-12是(shi)一(yi)种(zhong)金(jin)属(shu)(shu)(shu)(shu)铠(kai)装(zhuang)(zhuang)中(zhong)(zhong)(zhong)置(zhi)移(yi)开(kai)(kai)式(shi)低压配(pei)电(dian)柜(ju)。GSZ1：这(zhei)个(ge)部分(fen)(fen)是(shi)电(dian)柜(ju)的(de)(de)(de)组(zu)成(cheng)模(mo)块(kuai)。GSZ1是(shi)其中(zhong)(zhong)(zhong)一(yi)个(ge)常见的(de)(de)(de)组(zu)成(cheng)模(mo)块(kuai)，可(ke)能(neng)指(zhi)的(de)(de)(de)是(shi)某种(zhong)断路器(qi)、继电(dian)器(qi)或其他电(dian)器(qi)元件(jian)。金(jin)属(shu)(shu)(shu)(shu)铠(kai)装(zhuang)(zhuang)：这(zhei)意味(wei)着(zhe)(zhe)该(gai)(gai)配(pei)电(dian)柜(ju)采用金(jin)属(shu)(shu)(shu)(shu)铠(kai)装(zhuang)(zhuang)外(wai)壳(qiao)，以(yi)提(ti)供(gong)保护和安全(quan)性。金(jin)属(shu)(shu)(shu)(shu)铠(kai)装(zhuang)(zhuang)能(neng)够提(ti)供(gong)防护功能(neng)，使得配(pei)电(dian)柜(ju)内(nei)的(de)(de)(de)电(dian)器(qi)元件(jian)不易受到(dao)外(wai)界(jie)因(yin)素(su)的(de)(de)(de)影响(xiang)，例如灰尘、湿气和物理损害。中(zhong)(zhong)(zhong)置(zhi)移(yi)开(kai)(kai)式(shi)：这(zhei)意味(wei)着(zhe)(zhe)该(gai)(gai)配(pei)电(dian)柜(ju)具有(you)(you)中(zhong)(zhong)(zhong)置(zhi)移(yi)开(kai)(kai)式(shi)结(jie)(jie)构。中(zhong)(zhong)(zhong)置(zhi)移(yi)开(kai)(kai)式(shi)结(jie)(jie)构可(ke)以(yi)使得配(pei)电(dian)柜(ju)的(de)(de)(de)各个(ge)部分(fen)(fen)**移(yi)开(kai)(kai)，方便维修和更(geng)换设(she)备(bei)。综上(shang)所述，KYN28A-12(GSZ1)金(jin)属(shu)(shu)(shu)(shu)铠(kai)装(zhuang)(zhuang)中(zhong)(zhong)(zhong)置(zhi)移(yi)开(kai)(kai)式(shi)是(shi)一(yi)种(zhong)具有(you)(you)金(jin)属(shu)(shu)(shu)(shu)铠(kai)装(zhuang)(zhuang)外(wai)壳(qiao)和中(zhong)(zhong)(zhong)置(zhi)移(yi)开(kai)(kai)式(shi)结(jie)(jie)构的(de)(de)(de)低压配(pei)电(dian)柜(ju)型(xing)号。浙江(jiang)铠(kai)装(zhuang)(zhuang)中(zhong)(zhong)(zhong)置(zhi)移(yi)开(kai)(kai)式(shi)开(kai)(kai)关设(she)备(bei)供(gong)应

本文(wen)来自(zi)海润达物联科技有(you)限责任公司：//qfd1mz.cn/Article/18d0199980.html