出售KEM電材KOS-360SC,KOS-370SC,KOS-600SC,多少錢CREVIS,ST-2924,4 Points, 24Vac/2A, 24Vdc/2A, 1 Points/1COM
CREVIS,ST-2944,4 Points, 24Vac/2A, 24Vdc/2A, 1Point/1Com
CREVIS,ST-2734,4 Points, 24~220Vac/0.5A, 24~220Vac/0.5A, 4Points, 1Ponit/1COM
CREVIS,ST-2852,Triac Output 2 Points, 12V ~ 125Vac / 0.5A
CREVIS,ST-2792,Relay Output 2 Points, TermiCREVIS,NAl,230Vac / 2A, CREVIS,MAnual Type
CREVIS,ST-2748,Relay Output 8 Points, TermiCREVIS,NAl, 230Vac / 2A, 24Vdc/2A
CREVIS,ST-2744,Relay Output 4 Points, TermiCREVIS,NAl, 230Vac / 2A, 24Vdc/2A
CREVIS,ST-2742,Relay Output 2 Points, TermiCREVIS,NAl,230Vac / 2A, 24Vdc/2A
CREVIS,ST-2624,Digital Output 4 Points, Source, TermiCREVIS,NAl, 24Vdc / 2A
CREVIS,ST-2524,Digital Output 4 Points, Source, TermiCREVIS,NAl, DiagnoCREVIS,STics, 24Vdc / 2A
CREVIS,ST-2614,Digital Output 4 Points, Sink, TermiCREVIS,NAl, 24Vdc / 2A
CREVIS,ST-2514,Digital Output 4 Points, Sink, TermiCREVIS,NAl, DiagnoCREVIS,STics, 24Vdc / 2A
CREVIS,ST-2424,Digital Output 4 Points, Source, TermiCREVIS,NAl, DiagnoCREVIS,STics, 24Vdc / 0.5A
CREVIS,ST-2328,Digital Output 8 Points, Source, TermiCREVIS,NAl, 24Vdc / 0.5A
CREVIS,ST-2324,Digital Output 4 Points, Source, TermiCREVIS,NAl, 24Vdc / 0.5A
隨著時代的發(fā)展,絲保護(hù)電力設(shè)備不受過電流過熱的傷害,避免電子設(shè)備因內(nèi)部故障所引起的嚴(yán)重傷害。中文名絲外文名fuseIEC127定義熔斷體(fuse-bbbb)外形條絲狀、片狀熔斷標(biāo)志發(fā)光、變色、彈出固體指示器滅弧材料石英砂目錄1定義2介紹?外形?標(biāo)志?作用3構(gòu)成?基本組成?滅弧裝置?熔斷裝置4分?jǐn)嗄芰?分類?自復(fù)絲5相關(guān)說明?智能?高壓6其他類型定義編輯當(dāng)電路發(fā)生故障或異常時,伴隨著電流不斷升高,并且升玻璃絲管玻璃絲管高的電流有可能損壞電路中的某些重要器件,也有可能燒毀電路甚至造成火災(zāi)。若電路中正確地安置了絲,那么絲就會在電流異常升高到一定的高度和熱度的時候,自身熔斷切斷電流,從而起到保護(hù)電路運(yùn)行的作用。
CREVIS,ST-2414,Digital Output 4 Points, Sink, TermiCREVIS,NAl, DiagnoCREVIS,STics, 24Vdc / 0.5A
CREVIS,ST-2318,Digital Output 8 Points, Sink, TermiCREVIS,NAl, 24Vdc / 0.5A
CREVIS,ST-2314,Digital Output 4 Points, Sink, TermiCREVIS,NAl, 24Vdc / 0.5A
CREVIS,ST-222F,Digital Output 16 Points, Source, 20P Connector, 24Vdc / 0.5A
CREVIS,ST-221F,Digital Output 16 Points, Sink, 20P Connector, 24Vdc / 0.5A
CREVIS,ST-2124,Digital Output 4 Points, TTL Non- InveCREVIS,RTing, TermiCREVIS,NAl, 5Vdc / 20CREVIS,MA
CREVIS,ST-2114,Digital Output 4 Points, TTL InveCREVIS,RTing, TermiCREVIS,NAl, 5Vdc / 20CREVIS,MA
CREVIS,ST-1904,Digital bbbbb 4 Points, 240Vac (AC 170V ~ 264V)
CREVIS,ST-1804,Digital bbbbb 4 Points, 120Vac (AC 85V ~ 132V)
CREVIS,ST-132F,Digital bbbbb 16 Points, Source, 20P Connector 48Vdc
CREVIS,ST-1324,Digital bbbbb 4 Points, Source, TermiCREVIS,NAl, 48Vdc
CREVIS,ST-131F,Digital bbbbb 16 Points, Sink, 20P Connector 48Vdc
CREVIS,ST-1314,Digital bbbbb 4 Points, Sink, TermiCREVIS,NAl, 48Vdc
CREVIS,ST-122F,Digital bbbbb 16 Points, Source, 20P Connector, 12V/24Vdc
CREVIS,ST-1228,Digital bbbbb 8 Points, Source, TermiCREVIS,NAl, 12V / 24Vdc
CREVIS,ST-1224,Digital bbbbb 4 Points, Source, TermiCREVIS,NAl, 12V / 24Vdc
CREVIS,ST-121F,Digital bbbbb 16 Points, Sink, 20P Connector, 12V/24Vdc
而且當(dāng)熔體發(fā)生熔斷時其兩端的電壓也很高,往往會出現(xiàn)熔體已熔化(熔斷)甚至已汽化,但是電流并沒有切斷,其原因就是在熔斷的一瞬間在電壓及電流的作用下,絲的兩電極之間發(fā)生拉弧現(xiàn)象。這個滅弧裝置必須有很強(qiáng)的絕緣性與很好的導(dǎo)熱性,且呈負(fù)電性。石英砂就是常用的滅弧材料。熔斷裝置另外,還有一些絲有熔斷指示裝置,它的作用就是當(dāng)絲(熔斷)后其本身發(fā)生一定的外觀變化,易于被維修人員發(fā)現(xiàn),例如:發(fā)光、變色、彈出固體指示器等。分?jǐn)嗄芰庉嫯?dāng)介于常規(guī)不熔斷電流與相關(guān)規(guī)定的額定分?jǐn)嗄芰Γǖ碾娏鳎┲g的電流作用于絲時,絲應(yīng)能滿意地,而且不會危及周圍。絲被安置的電路的預(yù)期故障電流必須小于規(guī)定的額定分?jǐn)嗄芰﹄娏?。使兩個繞組之間以及繞組與鐵心之間都有電氣隔離。電壓互感器在運(yùn)行時,一次繞組N1并聯(lián)接在線路上,二次繞組N2并聯(lián)接儀表或繼電器。因此在測量高壓線路上的電壓時,盡管一次電壓很高,但二次卻是低壓的,可以確保操作人員和儀表的。工作原理編輯其工作原理與變壓器相同[2],基本結(jié)構(gòu)也是鐵心和原、副繞組。特點(diǎn)是容量很小且比較恒定,正常運(yùn)行時接近于空載狀態(tài)。電壓互感器本身的阻抗很小,一旦副邊發(fā)生短路,電流將急劇增長而燒毀線圈。為此,電壓互感器的原邊接有熔斷器,副邊可靠接地,以免原、副邊絕緣損毀時,副邊出現(xiàn)對地高電位而造身和設(shè)備事故。測量用電壓互感器一般都做成單相雙線圈結(jié)構(gòu),其原邊電壓為被測電壓(如電力的線電壓)。
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