眾所(suo)(suo)周知(zhi)，當用(yong)(yong)電設備(bei)對(dui)人體(ti)心臟直接(jie)漏(lou)(lou)電大(da)(da)于10uA 時，會造成(cheng)對(dui)患者的(de)(de)(de)微(wei)擊事故。而在一般通(tong)用(yong)(yong)建筑中所(suo)(suo)采用(yong)(yong)的(de)(de)(de)RCD、ELCB等(deng)對(dui)地(di)(di)漏(lou)(lou)電保護(hu)開關(guan)，其(qi)動作響應值是（如：30 mA），遠遠不(bu)(bu)能滿足(zu)醫(yi)(yi)用(yong)(yong)領(ling)域的(de)(de)(de)需要(yao)(yao)。因此，現在國際上對(dui)醫(yi)(yi)用(yong)(yong)領(ling)域中的(de)(de)(de)手(shou)術(shu)(shu)室、ICU、CCU等(deng)重要(yao)(yao)場所(suo)(suo)通(tong)常采用(yong)(yong)局(ju)部“中性點(dian)不(bu)(bu)接(jie)地(di)(di)的(de)(de)(de)供(gong)電系(xi)統(tong)”（即“IT系(xi)統(tong)”或稱“隔(ge)離電源(yuan)系(xi)統(tong)”）供(gong)電。通(tong)過(guo)單相3KVA-10KVA的(de)(de)(de)醫(yi)(yi)用(yong)(yong)隔(ge)離電源(yuan)給(gei)這些場所(suo)(suo)供(gong)電，首先(xian)可以防止其(qi)它供(gong)電回路中的(de)(de)(de)漏(lou)(lou)電流(liu)通(tong)過(guo)接(jie)地(di)(di)線(xian)竄入手(shou)術(shu)(shu)室、ICU、CCU的(de)(de)(de)醫(yi)(yi)用(yong)(yong)電氣設備(bei)上對(dui)患者的(de)(de)(de)安全(quan)構(gou)成(cheng)威脅；另外，一旦(dan)隔(ge)離電源(yuan)上所(suo)(suo)接(jie)的(de)(de)(de)負載（如各種醫(yi)(yi)用(yong)(yong)電氣設備(bei)）出現對(dui)地(di)(di)故障，因對(dui)地(di)(di)不(bu)(bu)能構(gou)成(cheng)回路，只能產生(sheng)一個很小的(de)(de)(de)容(rong)性漏(lou)(lou)電流(liu)，極大(da)(da)地(di)(di)保護(hu)了患者免遭漏(lou)(lou)電流(liu)的(de)(de)(de)傷害。

醫(yi)用(yong)(yong)(yong)隔(ge)離電(dian)(dian)(dian)源作(zuo)用(yong)(yong)(yong)如(ru)(ru)下：在醫(yi)用(yong)(yong)(yong)領(ling)域所(suo)有(you)(you)的以檢查為目的的，隔(ge)離電(dian)(dian)(dian)源電(dian)(dian)(dian)路， 與患者(zhe)直接接觸的設備(bei)有(you)(you)三種(zhong)應用(yong)(yong)(yong)情況：應用(yong)(yong)(yong)組(zu)0類：該(gai)醫(yi)用(yong)(yong)(yong)場所(suo)內(nei)(nei)沒有(you)(you)使(shi)用(yong)(yong)(yong)電(dian)(dian)(dian)網電(dian)(dian)(dian)源的醫(yi)用(yong)(yong)(yong)電(dian)(dian)(dian)器設備(bei)。  例如(ru)(ru)：候診室(shi)等、應用(yong)(yong)(yong)組(zu)1類： 該(gai)醫(yi)用(yong)(yong)(yong)場所(suo)內(nei)(nei)有(you)(you)使(shi)用(yong)(yong)(yong)電(dian)(dian)(dian)網電(dian)(dian)(dian)源的醫(yi)用(yong)(yong)(yong)電(dian)(dian)(dian)器設備(bei)，這些設備(bei)沒有(you)(you)任何部件插入患者(zhe)體(ti)內(nei)(nei)的。例如(ru)(ru)：病房、產房等。應用(yong)(yong)(yong)組(zu)2類：該(gai)醫(yi)用(yong)(yong)(yong)場所(suo)內(nei)(nei)有(you)(you)使(shi)用(yong)(yong)(yong)電(dian)(dian)(dian)網電(dian)(dian)(dian)源的醫(yi)用(yong)(yong)(yong)電(dian)(dian)(dian)器設備(bei)，這些設備(bei)用(yong)(yong)(yong)于心臟或人體(ti)內(nei)(nei)部手術、對患者(zhe)進行實時(shi)監視或用(yong)(yong)(yong)于維(wei)持患者(zhe)生命等作(zuo)用(yong)(yong)(yong)。

醫(yi)(yi)(yi)用隔(ge)(ge)離電(dian)源監(jian)(jian)控系統用于集中(zhong)(zhong)監(jian)(jian)控醫(yi)(yi)(yi)用大(da)樓內(nei)所有(you)醫(yi)(yi)(yi)用2類場(chang)所醫(yi)(yi)(yi)用IT系統的(de)(de)(de)運(yun)行狀(zhuang)況。這種集中(zhong)(zhong)監(jian)(jian)控系統可以設置在(zai)(zai)醫(yi)(yi)(yi)院(yuan)電(dian)氣(qi)運(yun)行和維護(hu)人員(yuan)的(de)(de)(de)值(zhi)班室(shi)內(nei)，也(ye)可以集成(cheng)(cheng)在(zai)(zai)其它電(dian)力監(jian)(jian)控系統中(zhong)(zhong)，由的(de)(de)(de)電(dian)氣(qi)人員(yuan)進行監(jian)(jian)控，一旦某套(tao)IT系統出現(xian)故(gu)(gu)障，電(dian)氣(qi)維護(hu)人員(yuan)也(ye)能在(zai)(zai)時(shi)間內(nei)做出判斷，并根據現(xian)場(chang)情(qing)況進行處理。在(zai)(zai)醫(yi)(yi)(yi)院(yuan)的(de)(de)(de)手術室(shi)、監(jian)(jian)護(hu)室(shi)等二類場(chang)所特殊環境里，漏電(dian)電(dian)流對構(gou)成(cheng)(cheng)潛在(zai)(zai)的(de)(de)(de)危(wei)險，醫(yi)(yi)(yi)用隔(ge)(ge)離電(dian)源系統可大(da)的(de)(de)(de)程(cheng)度上避免這種危(wei)險的(de)(de)(de)出現(xian)。在(zai)(zai)使用IT隔(ge)(ge)離電(dian)源系統過(guo)程(cheng)中(zhong)(zhong)，故(gu)(gu)障的(de)(de)(de)及時(shi)處理顯得尤為重要。