在世界范圍內(nèi),大部分標(biāo)準(zhǔn)的供電電源類型劃分為三種形式.這三種形式符合IEC 60364 國際標(biāo)準(zhǔn).
IEC 60364 根據(jù)三種不同的接地形式, 分為 TN, TT 和 IT.

下表說明了這些代碼的含義:

第一個字母表示大地和供電電源之間的連接(發(fā)電機或者變壓器)

T = 和大地直接連接(來自法語: Terre)
I = 不接地. 也可能通過高阻抗設(shè)備和大地連接

第二個字母表示大地和用電設(shè)備之間的連接

T = 與大地直接連接. 與電源接地系統(tǒng)無關(guān)
N = 經(jīng)供電網(wǎng)絡(luò)連接到大地
第三和第四個字母表示接地導(dǎo)線的位置:

S = 中性點和大地分開.
C = 中性點和大地合并在一起
6SE6410-2BB11-2AA0
6SE6410-2BB12-5AA0
6SE6410-2BB13-7AA0
6SE6410-2BB13-7AB0
6SE6410-2BB15-5BA0
6SE6410-2BB17-5BA0
6SE6410-2BB17-5BB0
6SE6410-2UA11-2AA0
6SE6410-2UA12-5AA0
6SE6410-2UA13-7AA0
6SE6410-2UA15-5BA0
6SE6410-2UB11-2AA0
6SE6410-2UB12-5AA0
6SE6410-2UB13-7AA0
6SE6410-2UB13-7AB0
6SE6410-2UB15-5BA0
6SE6410-2UB17-5BA0
6SE6410-2UB17-5BB0
6SE6420..
6SE6420-2AB11-2AA1
6SE6420-2AB12-5AA1
6SE6420-2AB13-7AA1
6SE6420-2AB15-5AA1
6SE6420-2AB17-5AA1
6SE6420-2AB21-1BA1
6SE6420-2AB21-5BA1
6SE6420-2AB22-2BA1
6SE6420-2AB23-0CA1
 6SE6420-2AC23-0CA1
6SE6420-2AC24-0CA1
6SE6420-2AC25-5CA1
6SE6420-2AD22-2BA1
6SE6420-2AD23-0BA1
6SE6420-2AD24-0BA1
6SE6420-2AD25-5CA1
6SE6420-2AD27-5CA1
6SE6420-2AD31-1CA1
6SE6420-2UC11-2AA1
6SE6420-2UC12-5AA1
6SE6420-2UC13-7AA1
6SE6420-2UC15-5AA1
6SE6420-2UC17-5AA1
6SE6420-2UC21-1BA1
6SE6420-2UC21-5BA1
6SE6420-2UC22-2BA1
6SE6420-2UC23-0CA1
6SE6420-2UC24-0CA1
6SE6420-2UC25-5CA1
6SE6420-2UD13-7AA1
6SE6420-2UD15-5AA1
6SE6420-2UD17-5AA1
6SE6420-2UD21-1AA1
6SE6420-2UD21-5AA1
6SE6420-2UD22-2BA1
6SE6420-2UD23-0BA1
6SE6420-2UD24-0BA1
6SE6420-2UD25-5CA1
6SE6420-2UD27-5CA1
6SE6420-2UD31-1CA1
6SE6430..
6SE6430-2AD27-5CA0
6SE6430-2AD31-1CA0
6SE6430-2AD31-5CA0
6SE6430-2AD31-8DA0
6SE6430-2AD32-2DA0
6SE6430-2AD33-0DA0
6SE6430-2AD33-7EA0
6SE6430-2AD34-5EA0
6SE6430-2AD35-5FA0
6SE6430-2AD37-5FA0
6SE6430-2AD38-8FA0
6SE6430-2UD27-5CA0
6SE6430-2UD31-1CA0
6SE6430-2UD31-5CA0
6SE6430-2UD31-8DA0
6SE6430-2UD32-2DA0
6SE6430-2UD33-0DA0
6SE6430-2UD33-7EA0
6SE6430-2UD34-5EA0
6SE6430-2UD35-5FA0
6SE6430-2UD37-5FA0
6SE6430-2UD38-8FA0
6SE6430-2UD41-1FA0
6SE6430-2UD41-3FA0
6SE6430-2UD41-6GA0
6SE6430-2UD42-0GA0
6SE6430-2UD42-5GA0
6SE6440..
6SE6440-2AB11-2AA1
6SE6440-2AB12-5AA1
6SE6440-2AB13-7AA1
6SE6440-2AB15-5AA1
6SE6440-2AB17-5AA1
6SE6440-2AB21-1BA1
6SE6440-2AB21-5BA1
6SE6440-2AB22-2BA1
6SE6440-2AB23-0CA1
6SE6440-2AC23-0CA1
6SE6440-2AC24-0CA1
6SE6440-2AC25-5CA1
6SE6440-2AD22-2BA1
6SE6440-2AD23-0BA1
6SE6440-2AD24-0BA1
6SE6440-2AD25-5CA1
6SE6440-2AD27-5CA1
6SE6440-2AD31-1CA1
6SE6440-2AD31-5DA1
6SE6440-2AD31-8DA1
6SE6440-2AD32-2DA1
6SE6440-2AD33-0EA1
6SE6440-2AD33-7EA1
6SE6440-2AD34-5FA1
6SE6440-2AD35-5FA1
6SE6440-2AD37-5FA1
6SE6440-2UC11-2AA1
6SE6440-2UC12-5AA1
6SE6440-2UC13-7AA1
6SE6440-2UC15-5AA1
6SE6440-2UC17-5AA1
6SE6440-2UC21-1BA1
6SE6440-2UC21-5BA1
6SE6440-2UC22-2BA1
6SE6440-2UC23-0CA1
6SE6440-2UC24-0CA1
6SE6440-2UC25-5CA1
6SE6440-2UC27-5DA1
6SE6440-2UC31-1DA1
6SE6440-2UC31-5DA1
6SE6440-2UC31-8EA1
6SE6440-2UC32-2EA1
6SE6440-2UC33-0FA1
6SE6440-2UC33-7FA1
6SE6440-2UC34-5FA1
6SE6440-2UD13-7AA1
6SE6440-2UD15-5AA1
6SE6440-2UD17-5AA1
6SE6440-2UD21-1AA1
6SE6440-2UD21-5AA1
6SE6440-2UD22-2BA1
6SE6440-2UD23-0BA1
6SE6440-2UD24-0BA1
6SE6440-2UD25-5CA1
6SE6440-2UD27-5CA1
6SE6440-2UD31-1CA1
6SE6440-2UD31-5DA1
6SE6440-2UD31-8DA1
6SE6440-2UD32-2DA1
6SE6440-2UD33-0EA1
6SE6440-2UD33-7EA1
6SE6440-2UD34-5FA1
6SE6440-2UD35-5FA1
6SE6440-2UD37-5FA1
6SE6440-2UD38-8FA1
6SE6440-2UD41-1FA1
6SE6440-2UD41-3GA1
6SE6440-2UD41-6GA1
6SE6440-2UD42-0GA1
6SE6440-2UE17-5CA1
6SE6440-2UE21-5CA1
6SE6440-2UE22-2CA1
6SE6440-2UE24-0CA1
6SE6440-2UE25-5CA1
6SE6440-2UE27-5CA1
6SE6440-2UE31-1CA1
6SE6440-2UE31-5DA1
6SE6440-2UE31-8DA1
6SE6440-2UE32-2DA1
6SE6440-2UE33-0EA1
6SE6440-2UE33-7EA1
6SE6440-2UE34-5FA1
6SE6440-2UE35-5FA1
6SE6440-2UE37-5FA1
6SL3223-0DE13-7AA0
6SL3223-0DE13-7BA0
6SL3223-0DE15-5AA0
6SL3223-0DE15-5BA0
6SL3223-0DE17-5AA0
6SL3223-0DE17-5BA0
6SL3223-0DE21-1AA0
6SL3223-0DE21-1BA0
6SL3223-0DE21-5AA0
6SL3223-0DE21-5BA0
6SL3223-0DE22-2AA0
6SL3223-0DE22-2BA0
6SL3223-0DE23-0AA0
6SL3223-0DE23-0BA0
6SL3223-0DE24-0AA0
6SL3223-0DE24-0BA0
6SL3223-0DE25-5AA0
6SL3223-0DE25-5BA0
6SL3223-0DE27-5AA0
6SL3223-0DE27-5BA0
6SL3223-0DE31-1AA0
6SL3223-0DE31-1BA0
6SL3223-0DE31-5AA0
6SL3223-0DE31-5BA0
6SL3223-0DE31-8AA0
6SL3223-0DE31-8BA0
6SL3223-0DE32-2AA0
6SL3223-0DE32-2BA0
6SL3223-0DE33-0AA0
6SL3223-0DE33-0BA0
6SL3223-0DE33-7AA0
6SL3223-0DE33-7BA0
6SL3223-0DE34-5AA0
6SL3223-0DE34-5BA0
6SL3223-0DE35-5AA0
6SL3223-0DE35-5BA0
6SL3223-0DE37-5AA0
6SL3223-0DE37-5BA0
6SL3223-0DE38-8AA0
6SL3223-0DE38-8BA0
6SL3224..
6SL3224-0BE13-7UA0
6SL3224-0BE15-5UA0
6SL3224-0BE17-5UA0
6SL3224-0BE21-1UA0
6SL3224-0BE21-5UA0
6SL3224-0BE22-2AA0
6SL3224-0BE22-2UA0
6SL3224-0BE23-0AA0
6SL3224-0BE23-0UA0
6SL3224-0BE24-0AA0
6SL3224-0BE24-0UA0
6SL3224-0BE25-5AA0
6SL3224-0BE25-5UA0
6SL3224-0BE27-5AA0
6SL3224-0BE27-5UA0
6SL3224-0BE31-1AA0
6SL3224-0BE31-1UA0
6SL3224-0BE31-5AA0
6SL3224-0BE31-5UA0
6SL3224-0BE31-8AA0
6SL3224-0BE31-8UA0
6SL3224-0BE32-2AA0
6SL3224-0BE32-2UA0
6SL3224-0BE33-0AA0
6SL3224-0BE33-0UA0
6SL3224-0BE33-7AA0
6SL3224-0BE33-7UA0
6SL3224-0BE34-5AA0
6SL3224-0BE34-5UA0
6SL3224-0BE35-5AA0
6SL3224-0BE35-5UA0
6SL3224-0BE37-5AA0
6SL3224-0BE37-5UA0
6SL3224-0BE38-8UA0
6SL3224-0BE41-1UA0
6SL3224-0XE41-3UA0
6SL3224-0XE41-6UA0
6SL3224-0XE42-0UA0
6SL3225..
6SL3225-0BE25-5AA0
6SL3225-0BE25-5AA1
6SL3225-0BE27-5AA0
6SL3225-0BE27-5AA1
6SL3225-0BE31-1AA0
6SL3225-0BE31-1AA1
6SL3225-0BE31-5AA0
6SL3225-0BE31-5AA1
6SL3225-0BE31-5UA0
6SL3225-0BE31-5UA1
6SL3225-0BE31-8AA0
6SL3225-0BE31-8AA1
6SL3225-0BE31-8UA0
6SL3225-0BE31-8UA1
6SL3225-0BE32-2AA0
6SL3225-0BE32-2AA1
6SL3225-0BE32-2UA0
6SL3225-0BE32-2UA1
6SL3225-0BE33-0AA0
6SL3225-0BE33-0AA1
6SL3225-0BE33-0UA0
6SL3225-0BE33-0UA1
6SL3225-0BE33-7AA0
6SL3225-0BE33-7AA1
6SL3225-0BE33-7UA0
6SL3225-0BE33-7UA1
6SL3225-0BE34-5AA0
6SL3225-0BE34-5AA1
6SL3225-0BE34-5UA0
6SL3225-0BE34-5UA1
6SL3225-0BE35-5AA0
6SL3225-0BE35-5AA1
6SL3225-0BE35-5UA0
6SL3225-0BE35-5UA1
6SL3225-0BE37-5AA0
6SL3225-0BE37-5AA1
6SL3225-0BE37-5UA0
6SL3225-0BE37-5UA1
6SL3225-0BH27-5AA0
6SL3225-0BH27-5AA1
6SL3225-0BH27-5UA0
6SL3225-0BH27-5UA1
6SL3225-0BH31-1AA0
6SL3225-0BH31-1AA1
6SL3225-0BH31-1UA0
6SL3225-0BH31-1UA1
6SL3225-0BH31-5AA0
6SL3225-0BH31-5AA1
6SL3225-0BH31-5UA0
6SL3225-0BH31-5UA1
6SL3225-0BH32-2AA0
6SL3225-0BH32-2AA1
6SL3225-0BH32-2UA0
6SL3225-0BH32-2UA1
6SL3225-0BH33-0AA0
6SL3225-0BH33-0AA1
6SL3225-0BH33-0UA0
6SL3225-0BH33-0UA1
6SL3225-0BH33-7AA0
6SL3225-0BH33-7AA1
6SL3225-0BH33-7UA0
6SL3225-0BH33-7UA1