眾所周知，當用(yong)電(dian)(dian)(dian)(dian)設備對(dui)人體心臟直接漏電(dian)(dian)(dian)(dian)大于10uA 時，會造成(cheng)(cheng)對(dui)患者(zhe)的(de)(de)微擊事故(gu)。而(er)在(zai)一般通用(yong)建筑中所采用(yong)的(de)(de)RCD、ELCB等(deng)對(dui)地漏電(dian)(dian)(dian)(dian)保(bao)(bao)護開關，其動作響應值(zhi)是（如：30 mA），遠遠不能滿足醫(yi)用(yong)領(ling)域(yu)的(de)(de)需(xu)要(yao)。因此(ci)，醫(yi)用(yong)隔(ge)離(li)(li)電(dian)(dian)(dian)(dian)源系(xi)(xi)統(tong)批(pi)發，現在(zai)國際上(shang)對(dui)醫(yi)用(yong)領(ling)域(yu)中的(de)(de)手術(shu)室、ICU、CCU等(deng)重要(yao)場所通常采用(yong)局部“中性點不接地的(de)(de)供(gong)(gong)電(dian)(dian)(dian)(dian)系(xi)(xi)統(tong)”（即“IT系(xi)(xi)統(tong)”或稱(cheng)“隔(ge)離(li)(li)電(dian)(dian)(dian)(dian)源系(xi)(xi)統(tong)”）供(gong)(gong)電(dian)(dian)(dian)(dian)。通過單相3KVA-10KVA的(de)(de)醫(yi)用(yong)隔(ge)離(li)(li)電(dian)(dian)(dian)(dian)源給這些場所供(gong)(gong)電(dian)(dian)(dian)(dian)，首先可以防(fang)止其它供(gong)(gong)電(dian)(dian)(dian)(dian)回路(lu)中的(de)(de)漏電(dian)(dian)(dian)(dian)流通過接地線(xian)竄入手術(shu)室、ICU、CCU的(de)(de)醫(yi)用(yong)電(dian)(dian)(dian)(dian)氣(qi)設備上(shang)對(dui)患者(zhe)的(de)(de)安全構(gou)成(cheng)(cheng)威脅；另外(wai)，一旦隔(ge)離(li)(li)電(dian)(dian)(dian)(dian)源上(shang)所接的(de)(de)負(fu)載（如各種醫(yi)用(yong)電(dian)(dian)(dian)(dian)氣(qi)設備）出現對(dui)地故(gu)障，因對(dui)地不能構(gou)成(cheng)(cheng)回路(lu)，只(zhi)能產生一個很小的(de)(de)容性漏電(dian)(dian)(dian)(dian)流，極大地保(bao)(bao)護了患者(zhe)免遭漏電(dian)(dian)(dian)(dian)流的(de)(de)傷(shang)害(hai)。

醫(yi)(yi)(yi)用隔(ge)離(li)電(dian)(dian)(dian)源(yuan)柜內(nei)置的(de)醫(yi)(yi)(yi)用隔(ge)離(li)變壓器(qi)設計用于(yu)需求效率(lv)、低(di)噪音(yin)隔(ge)離(li)電(dian)(dian)(dian)源(yuan)的(de)醫(yi)(yi)(yi)用場合和對噪聲(sheng)敏感的(de)醫(yi)(yi)(yi)用儀器(qi)及精密的(de)測量設備(bei)。同時(shi)啟(qi)動監控系統(tong)的(de)聲(sheng)光報(bao)警(jing)系統(tong)，及時(shi)提醒相(xiang)關人(ren)員(yuan)，進行故(gu)障(zhang)處理。其中，聲(sheng)音(yin)報(bao)警(jing)信號可(ke)(ke)被手動消除。通過系統(tong)，可(ke)(ke)根據要(yao)求遠程調整和設置各(ge)醫(yi)(yi)(yi)用隔(ge)離(li)電(dian)(dian)(dian)源(yuan)系統(tong)中絕緣監測儀的(de)各(ge)類報(bao)警(jing)參(can)數(shu)閾(yu)值，也(ye)可(ke)(ke)以任意查看這些報(bao)警(jing)參(can)數(shu)值。醫(yi)(yi)(yi)用隔(ge)離(li)電(dian)(dian)(dian)源(yuan)：IT接地系統(tong)的(de)主要(yao)優點是確保電(dian)(dian)(dian)力服務的(de)連續性。它還具備(bei)實(shi)現低(di)故(gu)障(zhang)電(dian)(dian)(dian)流的(de)相(xiang)關優點。

醫(yi)用IT系(xi)統(tong)必領(ling)采用醫(yi)院場所(suo)供電(dian)用隔離變(bian)壓器，并(bing)應符(fu)合(he)電(dian)力(li)變(bian)壓器.電(dian)源裝(zhuang)置和類(lei)似(si)產品的(de)安全(quan)6部分(fen)：醫(yi)用場所(suo)供電(dian)用隔離變(bian)壓器的(de)特殊要求》的(de)要求。為了降低醫(yi)用系(xi)統(tong)對(dui)地電(dian)容，提高絕緣(yuan)強度，IT系(xi)統(tong)的(de)配(pei)電(dian)箱要盡量安裝(zhuang)在使用場所(suo)附近，并(bing)盡可能(neng)減小系(xi)統(tong)容量以及系(xi)統(tong)分(fen)支數(shu)，盡量縮短(duan)系(xi)統(tong)配(pei)電(dian)線路的(de)長度。對(dui)于心臟手術(shu)(shu)等手術(shu)(shu)設備與人體心臟直(zhi)接接觸的(de)手術(shu)(shu)室，要充分(fen)做好(hao)防(fang)電(dian)流(liu)措(cuo)施。有(you)時候僅(jin)靠(kao)帶(dai)絕緣(yuan)監(jian)測的(de)IT系(xi)統(tong)是(shi)不(bu)夠(gou)的(de)，還應做好(hao)局部等電(dian)位聯結，使保護區內所(suo)有(you)可導(dao)電(dian)的(de)部分(fen)都處于同一(yi)電(dian)位水平(ping)上。