隨著中(zhong)國經濟發展，以及人(ren)民(min)生活水平的(de)(de)提(ti)高，現(xian)有(you)醫(yi)(yi)(yi)用機構的(de)(de)硬件(jian)配置(zhi)與國內對醫(yi)(yi)(yi)用服務的(de)(de)實際需(xu)求(qiu)之間還存(cun)在(zai)較大(da)差距，因此在(zai)今(jin)后(hou)相當長的(de)(de)一段時期內，醫(yi)(yi)(yi)院(yuan)建(jian)筑的(de)(de)建(jian)設(she)量依然很(hen)大(da).根據國家規(gui)范，標準結合現(xian)代醫(yi)(yi)(yi)院(yuan)建(jian)筑電氣設(she)計的(de)(de)新特點(dian)，以浙(zhe)江省某綜合性醫(yi)(yi)(yi)院(yuan)醫(yi)(yi)(yi)技，H+Line醫(yi)(yi)(yi)用it系統(tong)多少錢，住院(yuan)樓為例，針對醫(yi)(yi)(yi)院(yuan)的(de)(de)用電負荷，總結醫(yi)(yi)(yi)院(yuan)供配電方案及手術室，ICU的(de)(de)配電系統(tong)設(she)計.

醫(yi)用IT系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong)（俗稱醫(yi)用隔離(li)電(dian)(dian)源系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong)），又叫中(zhong)(zhong)性點(dian)不接(jie)(jie)地(di)(di)配電(dian)(dian)系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong)。在(zai)IT系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong)中(zhong)(zhong)，系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong)中(zhong)(zhong)性點(dian)對地(di)(di)完全隔離(li)，系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong)負載中(zhong)(zhong)的(de)外(wai)殼經接(jie)(jie)地(di)(di)保(bao)護線接(jie)(jie)地(di)(di)。如果出(chu)現單相接(jie)(jie)地(di)(di)故障，對地(di)(di)漏電(dian)(dian)流(liu)(liu)(liu)只能(neng)經過系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong)泄露電(dian)(dian)容(rong)對系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong)相線構成回路，而系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong)泄露電(dian)(dian)容(rong)引(yin)起(qi)的(de)容(rong)抗總是(shi)遠遠大于TN系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong)中(zhong)(zhong)的(de)接(jie)(jie)地(di)(di)電(dian)(dian)阻，因(yin)此IT系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong)中(zhong)(zhong)的(de)漏電(dian)(dian)流(liu)(liu)(liu)非常(chang)的(de)小，斷路器不會(hui)因(yin)接(jie)(jie)地(di)(di)電(dian)(dian)流(liu)(liu)(liu)的(de)存在(zai)而引(yin)起(qi)過電(dian)(dian)流(liu)(liu)(liu)動作，從而保(bao)證系(xi)(xi)(xi)(xi)(xi)統(tong)(tong)(tong)(tong)帶故障運行。

現(xian)在國際上對(dui)醫用領域中的(de)手術室(shi)(shi)、監(jian)護室(shi)(shi)(ICU)、心(xin)臟監(jian)護室(shi)(shi)(CCU) 等重要場(chang)(chang)所(suo)通常采用局(ju)部(bu)“中性線不接(jie)地供電(dian)系統(tong)”（即“IT 系統(tong)”或稱“隔離(li)電(dian)源系統(tong)”）供電(dian)。通過(guo)單相0.5kVA-10kVA的(de)隔離(li)變壓器給這(zhe)些場(chang)(chang)所(suo)供電(dian)，首先可以防止其他供電(dian)回路中的(de)漏電(dian)流通過(guo)接(jie)地線竄入手術室(shi)(shi)及監(jian)護室(shi)(shi)(ICU)、心(xin)臟監(jian)護室(shi)(shi)(CCU) 的(de)醫用電(dian)器設備上對(dui)患者(zhe)的(de)安(an)全構成威脅。