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簡要描述:使(shi)變(bian)(bian)壓(ya)器(qi)心(xin)子與外殼(ke)及鐵芯有良好的絕(jue)緣(yuan)(yuan)(yuan)作用,變(bian)(bian)壓(ya)器(qi)的絕(jue)緣(yuan)(yuan)(yuan)油,是充填在變(bian)(bian)壓(ya)器(qi)心(xin)子和外殼(ke)之間的液(ye)體(ti)絕(jue)緣(yuan)(yuan)(yuan)。
詳細介紹
交(jiao)直流試驗變(bian)壓器產(chan)品其(qi)主要作用有三方面:
(1)使(shi)變(bian)壓器(qi)心子(zi)與外(wai)殼(ke)及鐵芯(xin)有良好的(de)絕(jue)緣(yuan)作用,變(bian)壓器(qi)的(de)絕(jue)緣(yuan)油,是充(chong)填(tian)在變(bian)壓器(qi)心子(zi)和外(wai)殼(ke)之間(jian)(jian)的(de)液體(ti)絕(jue)緣(yuan)。充(chong)填(tian)于變(bian)壓器(qi)內各部分空隙間(jian)(jian),使(shi)變(bian)壓器(qi)外(wai)殼(ke)內沒有空氣,加(jia)強了(le)變(bian)壓器(qi)繞(rao)組的(de)層間(jian)(jian)和匝(za)間(jian)(jian)的(de)絕(jue)緣(yuan)強度(du)。同時,對變(bian)壓器(qi)繞(rao)組絕(jue)緣(yuan)起到了(le)防(fang)潮作用。
(2)使變(bian)(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)運行中(zhong)加(jia)速(su)冷卻,變(bian)(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)的(de)(de)絕緣(yuan)油(you)(you)在變(bian)(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)外殼(ke)內(nei),通過(guo)上、下層間的(de)(de)溫(wen)差(cha)作用(yong)(yong),構(gou)成油(you)(you)的(de)(de)對流循(xun)環。變(bian)(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)油(you)(you)可以將變(bian)(bian)(bian)壓(ya)(ya)(ya)心(xin)子(zi)的(de)(de)溫(wen)度(du),通過(guo)對流循(xun)環作用(yong)(yong)經(jing)變(bian)(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)的(de)(de)散熱器(qi)(qi)(qi)(qi)與(yu)外界低溫(wen)介質(空氣)間接接觸,再把冷卻后的(de)(de)低溫(wen)絕緣(yuan)油(you)(you),經(jing)循(xun)環作用(yong)(yong)回到變(bian)(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)心(xin)子(zi)內(nei)部,如此(ci)循(xun)環,起到了加(jia)速(su)冷卻變(bian)(bian)(bian)壓(ya)(ya)(ya)器(qi)(qi)(qi)(qi)的(de)(de)作用(yong)(yong)。
(3)滅(mie)弧(hu)作用,變(bian)(bian)壓(ya)(ya)器(qi)(qi)(qi)(qi)油(you)(you)除(chu)能起到上述兩種(zhong)作用外(wai)(wai),還可以(yi)在某(mou)種(zhong)特(te)殊運(yun)行狀態(tai)時(shi),起到了加速變(bian)(bian)壓(ya)(ya)器(qi)(qi)(qi)(qi)外(wai)(wai)殼內的(de)滅(mie)弧(hu)作用。由于變(bian)(bian)壓(ya)(ya)器(qi)(qi)(qi)(qi)油(you)(you)是經(jing)常運(yun)動的(de),當(dang)變(bian)(bian)壓(ya)(ya)器(qi)(qi)(qi)(qi)內有某(mou)種(zhong)故(gu)障而(er)引(yin)起電(dian)弧(hu)時(shi),能夠加速電(dian)弧(hu)的(de)熄滅(mie)。例如,變(bian)(bian)壓(ya)(ya)器(qi)(qi)(qi)(qi)的(de)分(fen)接開關接觸(chu)不良(liang)或繞(rao)組的(de)層間(jian)與(yu)匝(za)間(jian)短(duan)路引(yin)起電(dian)弧(hu),這時(shi)變(bian)(bian)壓(ya)(ya)器(qi)(qi)(qi)(qi)油(you)(you)通過運(yun)動沖擊了電(dian)弧(hu),使電(dian)弧(hu)拉長,并(bing)降低了電(dian)弧(hu)溫度(du),增(zeng)強變(bian)(bian)壓(ya)(ya)器(qi)(qi)(qi)(qi)油(you)(you)內的(de)去游離作用,可使電(dian)弧(hu)很快熄滅(mie)。
交直流(liu)試驗(yan)變壓器產品(pin)特點
1. 該產品具有體積小、重量輕、不受氣候變化影響、電暈小、現場搬運無需靜止可使用,使用壽命長、免維修等特點。
2. 適用于電力系統、工礦企業、科研部門等對各種高壓電氣設備、電氣元件、絕緣材料進行工頻或直流高壓下的絕緣強度試驗。
3. 采用單框芯式鐵芯結構,初級繞組繞在鐵芯上,高壓繞組在外,這種同軸布置減少了漏磁通,因而增大了繞組間的耦合。產品的外殼為圓柱灌式容器結構,能耐受0.8MPa以上壓力。
YDQ充(chong)氣式技術(shu)參(can)數(shu):
●輸入電壓:10kVA及以下為AC200V
10kVA以上為AC400V
●空載損耗:<10%
●短路阻抗:<10%
●變比誤差:<1%
●儀表電壓:100V
型號 | 輸入(ru)電壓 | 輸出電壓 | 低壓電流 | 高壓(ya)電(dian)流 | 外(wai)形尺(chi)寸(mm) | 重量(kg) |
3/50 | AC200V | 50kV | 15A | 60mA | Φ300×690 | 35 |
5/50 | 25A | 100mA | Φ300×690 | 35 | ||
10/50 | 50A | 200mA | Φ375×750 | 60 | ||
15/50 | AC400V | 37.5A | 300mA | Φ420×800 | 70 | |
20/50 | 50A | 400mA | Φ440×820 | 85 | ||
30/50 | 75A | 600mA | Φ386×840 | 100 | ||
50/50 | 125A | 1000mA | Φ416×910 | 120 | ||
5/100 | AC200V | 100kV | 25A | 50mA | Φ300×1300 | 65 |
10/100 | 50A | 100mA | Φ475×1300 | 65 | ||
15/100 |
AC400V | 37.5A | 150mA | Φ390×1320 | 85 | |
20/100 | 50A | 200mA | Φ400×1340 | 100 | ||
30/100 | 75A | 300mA | Φ410×1360 | 110 | ||
50/100 | 125A | 500mA | Φ460×1410 | 125 | ||
15/150 | 150kV | 37.5A | 100mA | Φ390×1800 | 100 | |
20/150 | 50A | 133mA | Φ415×1800 | 110 | ||
30/150 | 75A | 200mA | Φ430×1800 | 125 | ||
50/150 | 125A | 333mA | Φ490×1850 | 140 | ||
20/200 | 200kV | 50A | 100mA | Φ510×2150 | 140 | |
30/200 | 75A | 150mA | Φ530×2150 | 160 | ||
50/200 | 125A | 250mA | Φ550×2150 | 240 |
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