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真(zhen)(zhen)空接(jie)(jie)觸器(qi)一般(ban)與限(xian)流熔(rong)(rong)斷器(qi)共同(tong)利用(yong)，真(zhen)(zhen)空接(jie)(jie)觸器(qi)用(yong)于(yu)分(fen)合(he)(he)(he)操(cao)作，使電氣(qi)(qi)設(she)備運行(xing)或停運；熔(rong)(rong)斷器(qi)用(yong)于(yu)短路護衛，經(jing)由過程熔(rong)(rong)體(ti)熔(rong)(rong)斷開斷短路，堵截故障電氣(qi)(qi)設(she)備。接(jie)(jie)觸器(qi)與熔(rong)(rong)斷器(qi)只(zhi)有默契共同(tong)，并共同(tong)真(zhen)(zhen)空度(du)測(ce)試儀才能對電氣(qi)(qi)設(she)備起到節制(zhi)和護衛感化。接(jie)(jie)觸器(qi)有真(zhen)(zhen)空型(xing)和sf6型(xing)，當前(qian)首要采取真(zhen)(zhen)空型(xing)。從(cong)其(qi)工作道理講，真(zhen)(zhen)空接(jie)(jie)觸器(qi)有機械(xie)連(lian)(lian)結型(xing)、電氣(qi)(qi)連(lian)(lian)結型(xing)和永磁(ci)連(lian)(lian)結型(xing)。機械(xie)連(lian)(lian)結型(xing)是指合(he)(he)(he)閘(zha)(zha)線圈帶(dai)電后，驅動合(he)(he)(he)閘(zha)(zha)電磁(ci)鐵(tie)帶(dai)動絕緣翹板使接(jie)(jie)觸器(qi)主觸頭閉合(he)(he)(he)，合(he)(he)(he)閘(zha)(zha)完成后，由合(he)(he)(he)閘(zha)(zha)鎖扣裝配將接(jie)(jie)觸器(qi)連(lian)(lian)結在合(he)(he)(he)閘(zha)(zha)狀況；合(he)(he)(he)閘(zha)(zha)電磁(ci)鐵(tie)動作進(jin)程...

高壓無線(xian)(xian)(xian)核相(xiang)(xiang)(xiang)儀在(zai)(zai)工作(zuo)前(qian)變(bian)電站發電機所需實施(shi)的(de)(de)措(cuo)施(shi)1）電站內(nei)的(de)(de)所有坑、道必須考慮(lv)排(pai)(pai)水(shui)措(cuo)施(shi)，并保證其正常工作(zuo)，排(pai)(pai)水(shui)孔洞可能被水(shui)垢淤(yu)堵(du)，要定期清理。2）在(zai)(zai)檢(jian)修水(shui)力(li)機械部分時(shi)(shi)，必須考慮(lv)到(dao)漏水(shui)的(de)(de)可能，采取(qu)措(cuo)施(shi)防(fang)止水(shui)淹設備(bei)，正確(que)判斷排(pai)(pai)水(shui)情況。3）做電氣試驗(yan)時(shi)(shi)，應(ying)先弄清設備(bei)接(jie)(jie)(jie)線(xian)(xian)(xian)情況，確(que)定好(hao)試驗(yan)的(de)(de)項目、方(fang)法、步(bu)驟和(he)安全措(cuo)施(shi)才(cai)進行(xing)試驗(yan)。4）拆一、二次接(jie)(jie)(jie)線(xian)(xian)(xian)時(shi)(shi)，必須先作(zuo)好(hao)明顯標記(ji)和(he)記(ji)錄(lu)，嚴防(fang)接(jie)(jie)(jie)錯線(xian)(xian)(xian)；在(zai)(zai)恢復接(jie)(jie)(jie)線(xian)(xian)(xian)后(hou)投(tou)入運(yun)行(xing)前(qian)一定要相(xiang)(xiang)(xiang)序檢(jian)查和(he)核相(xiang)(xiang)(xiang)。有關(guan)的(de)(de)電壓互感器二次回路檢(jian)修后(hou)要進行(xing)核相(xiang)(xiang)(xiang)，必須將待并兩側(ce)...

局(ju)部(bu)放(fang)(fang)電(dian)(dian)(dian)檢(jian)測(ce)儀(yi)(yi)廣(guang)泛適用于變壓(ya)器(qi)(qi)(qi)、互感(gan)器(qi)(qi)(qi)、高(gao)(gao)壓(ya)開(kai)關、氧(yang)化鋅避雷(lei)器(qi)(qi)(qi)、電(dian)(dian)(dian)力(li)電(dian)(dian)(dian)纜等(deng)各(ge)種高(gao)(gao)電(dian)(dian)(dian)壓(ya)電(dian)(dian)(dian)工產(chan)品(pin)的(de)(de)局(ju)部(bu)放(fang)(fang)電(dian)(dian)(dian)的(de)(de)測(ce)量，產(chan)品(pin)的(de)(de)型(xing)式試驗，絕緣的(de)(de)運行監督(du)等(deng)。作(zuo)為(wei)電(dian)(dian)(dian)力(li)工程師(shi)，在(zai)使用該儀(yi)(yi)器(qi)(qi)(qi)前(qian)(qian)，一定(ding)要(yao)知道其工作(zuo)原(yuan)(yuan)理(li)，這樣才能更(geng)好的(de)(de)在(zai)現場試驗中使用它。局(ju)部(bu)放(fang)(fang)電(dian)(dian)(dian)測(ce)試儀(yi)(yi)測(ce)試原(yuan)(yuan)理(li)是高(gao)(gao)頻脈(mo)沖電(dian)(dian)(dian)流測(ce)量法(fa)（即ERA法(fa)）。試品(pin)Ca在(zai)試驗電(dian)(dian)(dian)壓(ya)下(xia)產(chan)生局(ju)部(bu)放(fang)(fang)電(dian)(dian)(dian)時，放(fang)(fang)電(dian)(dian)(dian)脈(mo)沖信號經耦合電(dian)(dian)(dian)容(rong)Ca送入(ru)輸入(ru)單元(yuan)，由輸入(ru)單元(yuan)拾取(qu)得(de)脈(mo)沖信號，經低噪聲前(qian)(qian)置(zhi)放(fang)(fang)大器(qi)(qi)(qi)放(fang)(fang)大，濾波放(fang)(fang)大器(qi)(qi)(qi)選擇所(suo)(suo)需(xu)頻帶及主放(fang)(fang)大器(qi)(qi)(qi)放(fang)(fang)大（達到所(suo)(suo)需(xu)幅值(zhi)與產(chan)生零標志脈(mo)...

絕(jue)緣電(dian)(dian)阻測(ce)(ce)試儀做好(hao)上述(shu)準備工(gong)作后就可以進行測(ce)(ce)量了,在(zai)測(ce)(ce)量時,還(huan)要注(zhu)意兆歐表(biao)(biao)的(de)正確(que)接(jie)線(xian),否則(ze)將引(yin)起不(bu)必要的(de)誤差甚(shen)至錯(cuo)誤。兆歐表(biao)(biao)的(de)接(jie)線(xian)柱共有三個(ge)：一(yi)個(ge)為“L”即線(xian)端(duan)(duan)(duan)(duan),一(yi)個(ge)“E”即為地端(duan)(duan)(duan)(duan),再一(yi)個(ge)“G”即屏蔽(bi)端(duan)(duan)(duan)(duan)（也(ye)叫(jiao)保護環(huan)）,一(yi)般(ban)被(bei)測(ce)(ce)絕(jue)緣電(dian)(dian)阻都接(jie)在(zai)“L”“E”端(duan)(duan)(duan)(duan)之間,但當被(bei)測(ce)(ce)絕(jue)緣體(ti)表(biao)(biao)面(mian)漏電(dian)(dian)嚴(yan)重時,必須將被(bei)測(ce)(ce)物的(de)屏蔽(bi)環(huan)或不(bu)須測(ce)(ce)量的(de)部分與“G”端(duan)(duan)(duan)(duan)相連接(jie)。這(zhe)樣漏電(dian)(dian)流(liu)就經由屏蔽(bi)端(duan)(duan)(duan)(duan)“G”直接(jie)流(liu)回(hui)發(fa)電(dian)(dian)機(ji)的(de)負端(duan)(duan)(duan)(duan)形成(cheng)回(hui)路,而不(bu)在(zai)流(liu)過(guo)兆歐表(biao)(biao)的(de)測(ce)(ce)量機(ji)構（動圈）。這(zhe)樣就從(cong)根本上消除了表(biao)(biao)面(mian)漏電(dian)(dian)流(liu)的(de)影(ying)響,特別...

在(zai)被(bei)測(ce)表面(mian)(mian)上(shang)(shang)的(de)干擾(rao)主要包(bao)括輻射(she)率和(he)外(wai)來光(guang)(guang)。根據斯蒂芬(fen)·玻耳(er)茲曼定律，物(wu)體(ti)的(de)全輻射(she)能為E＝eoT4。對(dui)于(yu)黑(hei)體(ti)，因(yin)為黑(hei)度(du)(du)(du)e＝1，用在(zai)線式紅外(wai)線測(ce)溫(wen)(wen)(wen)儀測(ce)出(chu)了輻射(she)能可直接知(zhi)道溫(wen)(wen)(wen)度(du)(du)(du)。但(dan)是對(dui)于(yu)一(yi)般物(wu)體(ti)輻射(she)能，不僅與溫(wen)(wen)(wen)度(du)(du)(du)有(you)關，而且還(huan)與表面(mian)(mian)黑(hei)度(du)(du)(du)有(you)關。黑(hei)度(du)(du)(du)又(you)與很多(duo)因(yin)素，如與物(wu)質(zhi)的(de)種(zhong)類、溫(wen)(wen)(wen)度(du)(du)(du)、波(bo)長(chang)和(he)表面(mian)(mian)狀態等有(you)關。只(zhi)有(you)在(zai)測(ce)量之前，已知(zhi)物(wu)體(ti)表面(mian)(mian)的(de)黑(hei)度(du)(du)(du)或采(cai)取黑(hei)度(du)(du)(du)溫(wen)(wen)(wen)度(du)(du)(du)同時(shi)測(ce)量的(de)方法，才能正確地測(ce)出(chu)物(wu)體(ti)表面(mian)(mian)的(de)真實溫(wen)(wen)(wen)度(du)(du)(du)。外(wai)來光(guang)(guang)是指從其(qi)他光(guang)(guang)源(yuan)入射(she)到被(bei)測(ce)表面(mian)(mian)上(shang)(shang)并且被(bei)反射(she)出(chu)來，混入到測(ce)量光(guang)(guang)中的(de)成分。在(zai)室外(wai)測(ce)溫(wen)(wen)(wen)時(shi)...

交(jiao)流(liu)試(shi)(shi)驗(yan)變(bian)(bian)(bian)壓(ya)器(qi)是在(zai)同類產(chan)品YDJ型高(gao)壓(ya)試(shi)(shi)驗(yan)變(bian)(bian)(bian)壓(ya)器(qi)的基礎上(shang)，按(an)試(shi)(shi)驗(yan)變(bian)(bian)(bian)壓(ya)器(qi)國(guo)家標準DL/T848.2-2004要求，經改進后生產(chan)的一(yi)種(zhong)輕型試(shi)(shi)驗(yan)變(bian)(bian)(bian)壓(ya)器(qi)產(chan)品，本系列產(chan)品具有(you)體積小(xiao)、重量輕、結構緊湊、攜帶(dai)方(fang)便等(deng)特點。實用于電(dian)力、工礦、科(ke)研等(deng)部門，對各種(zhong)高(gao)壓(ya)電(dian)氣(qi)設備、電(dian)氣(qi)元件、絕緣材料進行工頻耐壓(ya)試(shi)(shi)驗(yan)，它是高(gao)壓(ya)試(shi)(shi)驗(yan)中*的儀器(qi)。交(jiao)流(liu)試(shi)(shi)驗(yan)變(bian)(bian)(bian)壓(ya)器(qi)鐵芯為單框式。線圈采用同芯圓筒多層塔式結構，初級低壓(ya)繞(rao)組繞(rao)在(zai)鐵芯上(shang)，次級高(gao)壓(ya)繞(rao)組繞(rao)在(zai)低壓(ya)繞(rao)組外側，這(zhe)種(zhong)同軸布置減少了繞(rao)組間(jian)的藕合損耗。產(chan)品的外殼制(zhi)成與...

接(jie)地(di)(di)(di)引下(xia)線是電(dian)(dian)力設備與地(di)(di)(di)網的(de)(de)連(lian)接(jie)部分(fen)，在(zai)電(dian)(dian)力設備的(de)(de)長時間運行過程(cheng)中，連(lian)接(jie)處有可(ke)能因(yin)受(shou)潮等(deng)(deng)因(yin)素影響，出現節點銹蝕(shi)、甚(shen)至斷裂等(deng)(deng)現象，導(dao)(dao)致(zhi)接(jie)地(di)(di)(di)引下(xia)線與主接(jie)地(di)(di)(di)網連(lian)接(jie)點電(dian)(dian)阻增大，從而(er)不(bu)能滿(man)足電(dian)(dian)力規程(cheng)的(de)(de)要求(qiu)，使設備在(zai)運行中存在(zai)不(bu)安全隱患，嚴重時會造成設備失地(di)(di)(di)運行。接(jie)地(di)(di)(di)裝(zhuang)置(zhi)的(de)(de)地(di)(di)(di)下(xia)接(jie)地(di)(di)(di)及其連(lian)接(jie)部分(fen)也(ye)可(ke)能出現銹蝕(shi)、甚(shen)至斷裂現象。因(yin)此，定期(qi)對接(jie)地(di)(di)(di)裝(zhuang)置(zhi)進(jin)行電(dian)(dian)氣完整性測試(shi)是很(hen)有必要的(de)(de)。電(dian)(dian)力行業標準DL/T475-2006《接(jie)地(di)(di)(di)裝(zhuang)置(zhi)特性參數(shu)測量導(dao)(dao)則》規定電(dian)(dian)氣導(dao)(dao)通(tong)性應選(xuan)用專(zhuan)門的(de)(de)儀器進(jin)行測量，儀器分(fen)辨率為...

大多數電(dian)(dian)(dian)能質(zhi)(zhi)量問(wen)(wen)(wen)題是(shi)由工廠的(de)(de)內部因素造成(cheng)的(de)(de)，其中(zhong)包括(kuo)：1、安裝問(wen)(wen)(wen)題——接(jie)地(di)不(bu)(bu)良、布線不(bu)(bu)當、或是(shi)配電(dian)(dian)(dian)范圍過(guo)小；2、操作(zuo)問(wen)(wen)(wen)題——設(she)(she)備(bei)的(de)(de)運行參(can)數超(chao)過(guo)設(she)(she)計范圍；3、緩解諧波措施(shi)不(bu)(bu)當——屏蔽不(bu)(bu)當或沒(mei)有采取功率因數校正措施(shi)；4、維護問(wen)(wen)(wen)題——電(dian)(dian)(dian)纜絕(jue)緣性能或接(jie)地(di)連(lian)接(jie)老化。即使(shi)工廠設(she)(she)計再好(hao)，設(she)(she)備(bei)的(de)(de)安裝和(he)維護也無(wu)懈可擊，隨著(zhu)設(she)(she)備(bei)的(de)(de)使(shi)用和(he)老化，一樣會發(fa)生(sheng)(sheng)(sheng)電(dian)(dian)(dian)能質(zhi)(zhi)量問(wen)(wen)(wen)題。電(dian)(dian)(dian)能質(zhi)(zhi)量問(wen)(wen)(wen)題也可能來自工廠外(wai)部，我們的(de)(de)生(sheng)(sheng)(sheng)活(huo)中(zhong)存在突(tu)然停電(dian)(dian)(dian)、電(dian)(dian)(dian)壓驟降和(he)發(fa)生(sheng)(sheng)(sheng)電(dian)(dian)(dian)涌的(de)(de)風險，顯然，一旦真的(de)(de)發(fa)生(sheng)(sheng)(sheng)這些意外(wai)，電(dian)(dian)(dian)能質(zhi)(zhi)量產生(sheng)(sheng)(sheng)的(de)(de)代價都...

繼電(dian)(dian)(dian)保(bao)(bao)護(hu)的(de)(de)(de)基本任務主要分(fen)為兩部(bu)分(fen):1、當被保(bao)(bao)護(hu)的(de)(de)(de)電(dian)(dian)(dian)力(li)系(xi)統元(yuan)件發生故(gu)障(zhang)(zhang)時,應該由(you)該元(yuan)件的(de)(de)(de)繼電(dian)(dian)(dian)保(bao)(bao)護(hu)裝(zhuang)(zhuang)置迅速(su)準確地給距離故(gu)障(zhang)(zhang)元(yuan)件近(jin)的(de)(de)(de)開關發出跳閘命令,使故(gu)障(zhang)(zhang)元(yuan)件及時從(cong)電(dian)(dian)(dian)力(li)系(xi)統中斷開,以大限度地減少對電(dian)(dian)(dian)力(li)元(yuan)件本身的(de)(de)(de)損壞,降(jiang)低對電(dian)(dian)(dian)力(li)系(xi)統安全供電(dian)(dian)(dian)的(de)(de)(de)影響,并滿足電(dian)(dian)(dian)力(li)系(xi)統的(de)(de)(de)某些(xie)特定要求(qiu)（如(ru)保(bao)(bao)持電(dian)(dian)(dian)力(li)系(xi)統的(de)(de)(de)暫(zan)態穩定性等）。2、反應電(dian)(dian)(dian)氣設(she)備的(de)(de)(de)不(bu)正常(chang)(chang)工作情況(kuang),并根據不(bu)正常(chang)(chang)工作情況(kuang)和設(she)備運(yun)行(xing)(xing)維護(hu)條件的(de)(de)(de)不(bu)同（例如(ru)有無經常(chang)(chang)值(zhi)(zhi)班人員）發出信號(hao),以便值(zhi)(zhi)班人員進(jin)行(xing)(xing)處理,或由(you)裝(zhuang)(zhuang)置自動地進(jin)行(xing)(xing)調整,或將那些(xie)繼續(xu)運(yun)行(xing)(xing)而...

當把電(dian)(dian)能表接入(ru)被(bei)測電(dian)(dian)路時(shi)，電(dian)(dian)流(liu)線(xian)圈(quan)和電(dian)(dian)壓線(xian)圈(quan)中(zhong)(zhong)就(jiu)有交變(bian)電(dian)(dian)流(liu)流(liu)過，這兩個(ge)交變(bian)電(dian)(dian)流(liu)分別在(zai)它(ta)們的(de)(de)(de)(de)鐵芯中(zhong)(zhong)產(chan)生(sheng)交變(bian)的(de)(de)(de)(de)磁(ci)通；交變(bian)磁(ci)通穿過鋁(lv)(lv)盤(pan)，在(zai)鋁(lv)(lv)盤(pan)中(zhong)(zhong)感(gan)應(ying)出渦(wo)流(liu)；渦(wo)流(liu)又(you)在(zai)磁(ci)場中(zhong)(zhong)受(shou)(shou)到(dao)力的(de)(de)(de)(de)作用，從而(er)使(shi)鋁(lv)(lv)盤(pan)得到(dao)轉矩(ju)(ju)（主動(dong)(dong)(dong)(dong)力矩(ju)(ju)）而(er)轉動(dong)(dong)(dong)(dong)。負載(zai)消(xiao)耗的(de)(de)(de)(de)功(gong)率越(yue)大(da)(da)(da)，通過電(dian)(dian)流(liu)線(xian)圈(quan)的(de)(de)(de)(de)電(dian)(dian)流(liu)越(yue)大(da)(da)(da)，鋁(lv)(lv)盤(pan)中(zhong)(zhong)感(gan)應(ying)出的(de)(de)(de)(de)渦(wo)流(liu)也越(yue)大(da)(da)(da)，使(shi)鋁(lv)(lv)盤(pan)轉動(dong)(dong)(dong)(dong)的(de)(de)(de)(de)力矩(ju)(ju)就(jiu)越(yue)大(da)(da)(da)。即(ji)轉矩(ju)(ju)的(de)(de)(de)(de)大(da)(da)(da)小跟負載(zai)消(xiao)耗的(de)(de)(de)(de)功(gong)率成正比。功(gong)率越(yue)大(da)(da)(da)，轉矩(ju)(ju)也越(yue)大(da)(da)(da)，鋁(lv)(lv)盤(pan)轉動(dong)(dong)(dong)(dong)也就(jiu)越(yue)快。鋁(lv)(lv)盤(pan)轉動(dong)(dong)(dong)(dong)時(shi)，又(you)受(shou)(shou)到(dao)*磁(ci)鐵產(chan)生(sheng)的(de)(de)(de)(de)制動(dong)(dong)(dong)(dong)力矩(ju)(ju)的(de)(de)(de)(de)作用，制動(dong)(dong)(dong)(dong)力矩(ju)(ju)與主動(dong)(dong)(dong)(dong)力矩(ju)(ju)方向相(xiang)反；制動(dong)(dong)(dong)(dong)力矩(ju)(ju)的(de)(de)(de)(de)大(da)(da)(da)小與鋁(lv)(lv)盤(pan)...