醫(yi)用IT系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)（俗(su)稱醫(yi)用隔離電(dian)(dian)源系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)），又叫中(zhong)(zhong)性(xing)點不(bu)接(jie)地(di)(di)(di)配電(dian)(dian)系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)。在(zai)IT系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)中(zhong)(zhong)，系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)中(zhong)(zhong)性(xing)點對(dui)地(di)(di)(di)完全隔離，醫(yi)用it系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)隔離電(dian)(dian)源，系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)負(fu)載中(zhong)(zhong)的(de)外殼經接(jie)地(di)(di)(di)保(bao)護線(xian)接(jie)地(di)(di)(di)。如果出現單(dan)相接(jie)地(di)(di)(di)故(gu)障(zhang)(zhang)，對(dui)地(di)(di)(di)漏電(dian)(dian)流(liu)只能經過(guo)系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)泄露電(dian)(dian)容對(dui)系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)相線(xian)構(gou)成回路(lu)，而系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)泄露電(dian)(dian)容引(yin)起的(de)容抗(kang)總是遠(yuan)遠(yuan)大(da)于TN系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)中(zhong)(zhong)的(de)接(jie)地(di)(di)(di)電(dian)(dian)阻，因此IT系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)中(zhong)(zhong)的(de)漏電(dian)(dian)流(liu)非常的(de)小，斷路(lu)器不(bu)會因接(jie)地(di)(di)(di)電(dian)(dian)流(liu)的(de)存在(zai)而引(yin)起過(guo)電(dian)(dian)流(liu)動(dong)作，從而保(bao)證系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)帶(dai)故(gu)障(zhang)(zhang)運行。

醫用(yong)(yong)IT系(xi)(xi)統(tong)(tong)在(zai)(zai)醫用(yong)(yong)場所的(de)應用(yong)(yong)醫用(yong)(yong)IT系(xi)(xi)統(tong)(tong)是(shi)IT系(xi)(xi)統(tong)(tong)應用(yong)(yong)的(de)一(yi)個典型實(shi)例。醫院因其職能(neng)的(de)特(te)殊性(xing)，對其配電方式(shi)有(you)特(te)殊的(de)要求。如手術室(shi)、監護(hu)室(shi)等，都需要采用(yong)(yong)IT系(xi)(xi)統(tong)(tong)，以(yi)提供一(yi)個安全、可靠、連(lian)續的(de)配電系(xi)(xi)統(tong)(tong)。醫用(yong)(yong)IT系(xi)(xi)統(tong)(tong)在(zai)(zai)醫用(yong)(yong)場所應用(yong)(yong)時(shi)(shi)(shi)的(de)注意事項由于醫用(yong)(yong)場所具(ju)有(you)其特(te)殊性(xing)，因此在(zai)(zai)進行時(shi)(shi)(shi)候醫用(yong)(yong)IT系(xi)(xi)統(tong)(tong)設計時(shi)(shi)(shi)應特(te)別注意以(yi)下(xia)幾點：散熱(re)設計，工業電源模塊(kuai)約15%的(de)損壞是(shi)由于散熱(re)不良引起的(de)。

電源(yuan)(yuan)正在向小(xiao)型(xing)化(hua)和(he)集成化(hua)發展，在許多應用(yong)中，電源(yuan)(yuan)在封閉環境中持續工作，如果積聚的(de)(de)熱(re)量無(wu)法(fa)散發，電源(yuan)(yuan)內部的(de)(de)設備(bei)可能會因(yin)熱(re)應力過大而損(sun)壞(huai)。常(chang)用(yong)的(de)(de)冷卻方法(fa)是自然(ran)風(feng)冷、散熱(re)器和(he)強制冷卻風(feng)扇(shan)。熱(re)設計的(de)(de)一(yi)些經驗(yan)分享如下：電源(yuan)(yuan)模塊的(de)(de)對(dui)(dui)(dui)流通風(feng)。對(dui)(dui)(dui)于依靠自然(ran)對(dui)(dui)(dui)流和(he)熱(re)輻(fu)射(she)散熱(re)的(de)(de)電源(yuan)(yuan)，周圍(wei)(wei)環境必(bi)須便(bian)于對(dui)(dui)(dui)流通風(feng)，并且周圍(wei)(wei)沒有便(bian)于空氣流通的(de)(de)大型(xing)設備(bei)。