2019年12月1日寒冬(dong)已(yi)至(zhi)，云南(nan)思(si)(si)輝電氣設備(bei)(bei)有限(xian)(xian)公(gong)司一(yi)行十(shi)余人至(zhi)昆(kun)明(ming)市祿勸縣(xian)則(ze)黑中(zhong)心(xin)(xin)小(xiao)學(xue)(xue)，舉行“愛心(xin)(xin)校(xiao)服(fu)”捐(juan)(juan)(juan)贈活(huo)動。此次活(huo)動共計捐(juan)(juan)(juan)贈校(xiao)服(fu)763套。當日，在則(ze)黑中(zhong)心(xin)(xin)小(xiao)學(xue)(xue)報告廳舉行捐(juan)(juan)(juan)贈儀式，云南(nan)思(si)(si)輝電氣設備(bei)(bei)有限(xian)(xian)公(gong)司、則(ze)黑鄉(xiang)人民(min)政府、則(ze)黑中(zhong)心(xin)(xin)小(xiao)學(xue)(xue)校(xiao)長等領導參加捐(juan)(juan)(juan)贈儀式并作(zuo)發言。則(ze)黑鄉(xiang)位于(yu)(yu)云南(nan)省昆(kun)明(ming)市祿勸彝族苗族自治縣(xian)縣(xian)境(jing)東北(bei)部，位于(yu)(yu)金沙(sha)江(jiang)與普渡河交匯(hui)的(de)(de)三(san)角地(di)帶，鄉(xiang)境(jing)內(nei)山巒起(qi)伏，山區(qu)與壩子相間。則(ze)黑中(zhong)心(xin)(xin)小(xiao)學(xue)(xue)收錄周(zhou)邊(bian)村(cun)鎮760余名(ming)小(xiao)學(xue)(xue)生(sheng)(sheng)(sheng)，由(you)于(yu)(yu)地(di)處偏遠，生(sheng)(sheng)(sheng)活(huo)條件艱苦，全校(xiao)學(xue)(xue)生(sheng)(sheng)(sheng)沒(mei)有統一(yi)的(de)(de)校(xiao)服(fu)，云南(nan)思(si)(si)輝電氣設備(bei)(bei)有限(xian)(xian)公(gong)司總(zong)經理郭衡(heng)女士聽聞此消息，發起(qi)并推(tui)動了本次“愛心(xin)(xin)校(xiao)服(fu)”捐(juan)(juan)(juan)贈活(huo)動。短短二十(shi)余天，為全校(xiao)學(xue)(xue)生(sheng)(sheng)(sheng)定做校(xiao)服(fu)并送(song)至(zhi)其手中(zhong)，讓他們穿上校(xiao)服(fu)在參加莊嚴(yan)的(de)(de)升旗儀式時和(he)(he)在日常(chang)的(de)(de)學(xue)(xue)習生(sheng)(sheng)(sheng)活(huo)中(zhong)，能得(de)到溫暖(nuan)和(he)(he)鼓(gu)勵，努力(li)學(xue)(xue)習，爭取取得(de)優異的(de)(de)成績。

配電變壓器的低壓側總過流保護熔斷器的額定電流，汽車充電樁應大于配電變壓器的低壓側額定電流，生產汽車充電樁一般取額(e)定(ding)電(dian)流(liu)(liu)的1.5倍(bei)，熔(rong)體的額(e)定(ding)電(dian)流(liu)(liu)應(ying)按變壓(ya)器允許的過(guo)(guo)負荷倍(bei)數和熔(rong)斷(duan)器特性(xing)確定(ding)。出線回(hui)路過(guo)(guo)流(liu)(liu)保(bao)護(hu)熔(rong)斷(duan)器的熔(rong)體額(e)定(ding)電(dian)流(liu)(liu)，不(bu)應(ying)大于總過(guo)(guo)流(liu)(liu)保(bao)護(hu)熔(rong)斷(duan)器的額(e)定(ding)電(dian)流(liu)(liu)，熔(rong)體的額(e)定(ding)電(dian)流(liu)(liu)按回(hui)路正常最大負荷電(dian)流(liu)(liu)選(xuan)擇，并應(ying)躲過(guo)(guo)正常的尖峰電(dian)流(liu)(liu)。

1.主母(mu)線最(zui)大額定(ding)電(dian)(dian)(dian)流(liu):主母(mu)線最(zui)大能(neng)夠承(cheng)載的(de)電(dian)(dian)(dian)流(liu)的(de)額定(ding)值(zhi)。2.額定(ding)短時耐(nai)(nai)受(shou)(shou)電(dian)(dian)(dian)流(liu):由生產廠家給出的(de),成套設備(bei)中(zhong)某條(tiao)電(dian)(dian)(dian)路(lu)在(zai)國家標(biao)(biao)準GB7251.1-2005中(zhong)8.2.3規(gui)定(ding)的(de)試驗條(tiao)件(jian)下能(neng)安全(quan)承(cheng)載的(de)短時耐(nai)(nai)受(shou)(shou)電(dian)(dian)(dian)流(liu)方均根(gen)值(zhi)。3.峰值(zhi)短時耐(nai)(nai)受(shou)(shou)電(dian)(dian)(dian)流(liu):在(zai)規(gui)定(ding)試驗條(tiao)件(jian)下,生產廠家規(gui)定(ding)此電(dian)(dian)(dian)路(lu)能(neng)夠圓滿地承(cheng)受(shou)(shou)的(de)峰值(zhi)電(dian)(dian)(dian)流(liu)。4.外殼防護(hu)等級:IEC60529-1989標(biao)(biao)準由成套設備(bei)提供的(de)防止觸(chu)及(ji)帶電(dian)(dian)(dian)部件(jian),以(yi)及(ji)外來(lai)固體(ti)(ti)的(de)侵(qin)入(ru)和液體(ti)(ti)的(de)進入(ru)的(de)等級。具(ju)體(ti)(ti)等級劃分(fen)(fen)(fen)詳(xiang)見IEC60529標(biao)(biao)準。5.內部分(fen)(fen)(fen)隔(ge)方式:根(gen)據IEC60529-1989標(biao)(biao)準,為保護(hu)人(ren)身安全(quan),將開(kai)關柜獨立劃分(fen)(fen)(fen)成幾個隔(ge)室的(de)不同方式。不同型號的(de)配(pei)(pei)電(dian)(dian)(dian)柜之間的(de)技(ji)術參(can)數(shu)都(dou)有很(hen)大不同,而(er)進口配(pei)(pei)電(dian)(dian)(dian)柜的(de)技(ji)術參(can)數(shu)基本都(dou)優(you)于國產配(pei)(pei)電(dian)(dian)(dian)柜,但(dan)并不能(neng)認為進口配(pei)(pei)電(dian)(dian)(dian)柜就一定(ding)比(bi)國產配(pei)(pei)電(dian)(dian)(dian)柜好(hao)。

在非金屬材(cai)料中(zhong)，纖維增強(qiang)聚酯材(cai)料有著優秀的抗(kang)老(lao)化(hua)(hua)性(xing)能(neng)。經過抗(kang)老(lao)化(hua)(hua)性(xing)能(neng)測(ce)試表(biao)明，使(shi)用(yong)地點不同(tong)(tong)，所處氣候(hou)帶不同(tong)(tong)，其(qi)表(biao)面最大(da)老(lao)化(hua)(hua)厚度為(wei)(wei)20年(nian)小于(yu)50μm。大(da)多數箱體(ti)的最小厚度為(wei)(wei)5mm，小于(yu)箱體(ti)厚度的1%，因此對箱體(ti)的機械性(xing)能(neng)沒有明顯的影響。令外(wai)(wai)該(gai)公(gong)司采(cai)取了一種特殊(shu)的耐(nai)紫(zi)外(wai)(wai)線表(biao)面處理(li)工藝，更加強(qiang)化(hua)(hua)了其(qi)耐(nai)老(lao)化(hua)(hua)性(xing)能(neng)。