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    DZ20塑料外殼式斷路器

    2014/2/13 10:23:02      點擊:

    DZ20塑料外殼式斷路器1.表中所列規(guī)格用戶根據(jù)需要選取,但在一臺斷路器中不應(yīng)超過表中每格中所規(guī)定的項目。
    2.輔助觸頭400A及以上為二常開二常閉,225A以下為一常開一常閉。
    3.?dāng)嗦菲饔星冯妷好摽燮骱头謩蠲摽燮。其電壓?guī)格交流有220V、380V,直流有110V、220V供四種。欠壓脫扣器電壓僅有交流規(guī)格。
    4.報警觸頭均為一常開、一常閉觸頭;
    5.殼架等級100A、225A中無248、258、278、348、358、378的規(guī)格。
    *復(fù)式脫扣器——為帶瞬時脫扣器和熱脫扣器的脫扣器。
    DZ20塑殼斷路器是以Y型為基本產(chǎn)品,由絕緣外殼、操作機構(gòu)、觸頭系統(tǒng)和脫扣器四個部分組成。斷路器的操作機構(gòu)具有使觸頭快速合閘和分?jǐn)嗟墓δ埽洹昂稀薄胺帧薄霸倏邸焙汀白杂擅摽邸蔽恢靡允直恢脕韰^(qū)分。
    C型、J型和G型斷路器是在Y型基本產(chǎn)品基礎(chǔ)上派生設(shè)計而成(除C型160A外)。J型斷路器是將Y型斷路器的觸頭進行結(jié)構(gòu)改進,使之在短路情況下,在機構(gòu)動作之前,動觸頭能迅速斥開,達到提高通斷能力的目的。
    G型斷路器是在Y型斷路器的底板后串聯(lián)的一個平行導(dǎo)體組成的斥力限流觸頭系統(tǒng),該系統(tǒng)比J型的斥力觸頭長,斷開距離也大,因此能更迅速的限流。
    四級斷路器中性極(N)不裝脫扣元件,位于最右側(cè)位置。在分合過程中,中性極規(guī)定為閉合時較其他三級先接觸,分閘時較其他三級后斷開。
    C型斷路器是為滿足630KVA及以下變壓器電網(wǎng)中的配電保護之需要,通過先用經(jīng)濟型材料的簡化結(jié)構(gòu)及改進工藝等辦法,能夠達到較好的經(jīng)濟效果。

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