選擇變(bian)(bian)壓(ya)(ya)器是選擇油浸(jin)式(shi)(shi)(shi)(shi)的(de)(de)還(huan)(huan)是干(gan)(gan)式(shi)(shi)(shi)(shi)變(bian)(bian)壓(ya)(ya)器,主要還(huan)(huan)是看用(yong)戶(hu)需求和實際情(qing)況決定的(de)(de)。我們一般說干(gan)(gan)式(shi)(shi)(shi)(shi)變(bian)(bian)壓(ya)(ya)器和油浸(jin)式(shi)(shi)(shi)(shi)變(bian)(bian)壓(ya)(ya)器,主要還(huan)(huan)是因為電(dian)力變(bian)(bian)壓(ya)(ya)器的(de)(de)冷卻方(fang)(fang)式(shi)(shi)(shi)(shi)不同(tong),干(gan)(gan)式(shi)(shi)(shi)(shi)變(bian)(bian)壓(ya)(ya)器的(de)(de)冷卻方(fang)(fang)式(shi)(shi)(shi)(shi)采(cai)用(yong)的(de)(de)是空氣(qi)冷卻,油浸(jin)式(shi)(shi)(shi)(shi)變(bian)(bian)壓(ya)(ya)器的(de)(de)冷卻方(fang)(fang)式(shi)(shi)(shi)(shi)通常采(cai)用(yong)油浸(jin)自(zi)冷式(shi)(shi)(shi)(shi)、油浸(jin)風(feng)冷式(shi)(shi)(shi)(shi)和強(qiang)迫油循(xun)環三種之一。
干式(shi)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)器(qi)適(shi)用于防火要(yao)(yao)求高的(de)(de)地方(fang),如住宅(zhai)樓(lou),寫字樓(lou),辦(ban)公室(shi)(shi)、停車場、車站、學校(xiao)等地。而(er)(er)油(you)浸式(shi)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)器(qi)主要(yao)(yao)適(shi)用于室(shi)(shi)外(wai)、環(huan)境(jing)相對惡劣的(de)(de)地方(fang),比如需要(yao)(yao)防水的(de)(de)地方(fang)、桿上、室(shi)(shi)外(wai)等地。所以如果(guo)(guo)您需要(yao)(yao)小(xiao)區安裝變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)器(qi)的(de)(de)話,對變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)器(qi)防水要(yao)(yao)求不(bu)高,對變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)器(qi)的(de)(de)噪音有(you)較高要(yao)(yao)求的(de)(de)話,這(zhe)時候選(xuan)擇干式(shi)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)器(qi)就比較合理。而(er)(er)如果(guo)(guo)需要(yao)(yao)把變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)器(qi)安裝在(zai)室(shi)(shi)外(wai)桿上作為路(lu)燈照(zhao)明變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)器(qi)的(de)(de)話,這(zhe)是就要(yao)(yao)選(xuan)擇油(you)浸式(shi)變(bian)(bian)(bian)(bian)(bian)壓(ya)(ya)器(qi)了。
干(gan)式(shi)變壓器與油浸式(shi)變壓器有什么(me)區別(bie),最大(da)的區別(bie)還是(shi)變壓器里面有沒有油;
1、從外(wai)觀上看(kan),封(feng)裝形式不(bu)同,干式變(bian)(bian)壓(ya)器能直接看(kan)到鐵芯和線圈(quan),而油式變(bian)(bian)壓(ya)器只能看(kan)到變(bian)(bian)壓(ya)器的外(wai)殼;
2、引(yin)線形(xing)式不一(yi)樣,干式變(bian)壓(ya)器(qi)大多使(shi)用硅(gui)橡膠套(tao)管(guan),而(er)油(you)式變(bian)壓(ya)器(qi)大部分使(shi)用瓷套(tao)管(guan);
3、容量(liang)(liang)及電壓(ya)(ya)不同,干式(shi)變(bian)壓(ya)(ya)器一(yi)般適(shi)用于配(pei)電用,容量(liang)(liang)大(da)都在1600KVA以下(xia),電壓(ya)(ya)在10KV以下(xia),也(ye)有個(ge)別做到(dao)35KV電壓(ya)(ya)等(deng)級(ji)的;而油式(shi)變(bian)壓(ya)(ya)器卻可(ke)以從小到(dao)大(da)做到(dao)全部容量(liang)(liang),電壓(ya)(ya)等(deng)級(ji)也(ye)做到(dao)了所(suo)有電壓(ya)(ya);我國(guo)正在建設的特(te)高壓(ya)(ya)1000KV試驗線路,采用的一(yi)定是油式(shi)變(bian)壓(ya)(ya)器;
4、絕緣(yuan)(yuan)(yuan)和散(san)熱(re)(re)不(bu)一(yi)樣(yang),干式(shi)變(bian)壓(ya)器一(yi)般用(yong)樹脂絕緣(yuan)(yuan)(yuan),靠(kao)自然風冷,大容(rong)量(liang)靠(kao)風機冷卻,而油式(shi)變(bian)壓(ya)器靠(kao)絕緣(yuan)(yuan)(yuan)油進行(xing)絕緣(yuan)(yuan)(yuan),靠(kao)絕緣(yuan)(yuan)(yuan)油在變(bian)壓(ya)器內(nei)部的循環將線(xian)圈(quan)產(chan)生的熱(re)(re)帶(dai)到變(bian)壓(ya)器的散(san)熱(re)(re)器(片(pian))上(shang)進行(xing)散(san)熱(re)(re);
5、從應用場(chang)(chang)所上說,干式(shi)變壓器(qi)大多應用在需要”防(fang)火、防(fang)爆”的場(chang)(chang)所,一(yi)般大型建筑(zhu)、高層建筑(zhu)上易采用;而油式(shi)變壓器(qi)由于(yu)出后可能有油噴出或泄漏,造成火災,大多應用在室外,且(qie)有場(chang)(chang)地(di)挖設事(shi)故油池的場(chang)(chang)所;
6、對負荷的承受能力(li)不同,一般(ban)干式變壓器應在(zai)額定容量下運(yun)行,而(er)油式變壓器過載(zai)能力(li)比(bi)較好;
7、造價(jia)不一樣,對同容量變(bian)(bian)壓器來(lai)說,干(gan)式變(bian)(bian)壓器的(de)采(cai)購價(jia)格(ge)比油式變(bian)(bian)壓器價(jia)格(ge)要(yao)高(gao)。