现在农村到底是用哪一种电路系统，看国家规定是要做TN-S系统，可是看到电表箱上的金属外壳却连着N线，？？ 如何区别：TN-C系统、TN-S系统、TN-C-S系统、TT...
\u519c\u6751\u7535\u7f51\u7528\u7684\u662f\u4ec0\u4e48\u7535\u529b\u7cfb\u7edf?TN-S,TN-C,TN-C-S\u8fd8\u662fTT\u7cfb\u7edf\u554a??\u519c\u6751\u7535\u7f51\u4e00\u822c\u662fTN-C-S\u7cfb\u7edf\u548cTT\u7cfb\u7edf\uff0c\u4f46\u662f\u6211\u5404\u4eba\u8ba4\u4e3a\u8fd8\u662fTT\u7cfb\u7edf\u7528\u7684\u591a\uff0c\u4ece\u53d8\u538b\u5668\u4e2d\u6027\u70b9\u5f15\u51fa4\u6839\u7ebf\uff0c\u8fdb\u6237\u5f15\u4e00\u706b\u4e00\u96f6\u8fdb\u5165\u4f4f\u6237\uff0c\u5982\u679c\u8fd9\u65f6\u628a\u5de5\u4f5c\u96f6\u7ebf\u5728\u7535\u6e90\u4fa7\u91cd\u590d\u63a5\u5730\uff0c\u90a3\u4e48\u5c31\u662fTN-C-S\u7cfb\u7edf\u3002\u5982\u679c\u5de5\u4f5c\u96f6\u7ebf\u4e0d\u63a5\u5730\uff0c\u628a\u7528\u8bbe\u5907\u5916\u58f3\u5355\u72ec\u63a5\u5730\uff0c\u90a3\u4e48\u5c31\u662fTT\u7cfb\u7edf\uff0c\u6240\u4ee5TT\u4f9b\u7535\u7cfb\u7edf\u4e2d\uff0c\u8981\u5b89\u88c5\u6f0f\u7535\u4fdd\u62a4\u65ad\u8def\u5668\uff0c\u5426\u5219\u5f53\u7ebf\u8def\u6f0f\u7535\u65f6\uff0c\u7531\u4e8e\u4ea7\u751f\u7684\u63a5\u5730\u7535\u963b\u6bd4\u8f83\u5927\uff0c\u53ef\u80fd\u4e0d\u80fd\u5f15\u8d77\u5f00\u5173\u52a8\u4f5c\uff0c\u4f7f\u7535\u6c14\u8bbe\u5907\u7684\u5916\u58f3\u5c06\u957f\u671f\u5e26\u7535\u3002
\u5efa\u7b51\u5de5\u7a0b\u4f9b\u7535\u4f7f\u7528\u7684\u57fa\u672c\u4f9b\u7535\u7cfb\u7edf\u6709\u4e09\u76f8\u4e09\u7ebf\u5236\u4e09\u76f8\u56db\u7ebf\u5236\u7b49\uff0c\u4f46\u8fd9\u4e9b\u540d\u8bcd\u672f\u8bed\u5185\u6db5\u4e0d\u662f\u5341\u5206\u4e25\u683c\u3002\u56fd\u9645\u7535\u5de5\u59d4\u5458\u4f1a\uff08 IEC \uff09\u5bf9\u6b64\u4f5c\u4e86\u7edf\u4e00\u89c4\u5b9a\uff0c\u79f0\u4e3a TT \u7cfb\u7edf\u3001 TN \u7cfb\u7edf\u3001 IT \u7cfb\u7edf\u3002\u5176\u4e2d TN \u7cfb\u7edf\u53c8\u5206\u4e3a TN-C \u3001 TN-S \u3001 TN-C-S \u7cfb\u7edf\u3002\u4e0b\u9762\u5185\u5bb9\u5c31\u662f\u5bf9\u5404\u79cd\u4f9b\u7535\u7cfb\u7edf\u505a\u4e00\u4e2a\u627c\u8981\u7684\u4ecb\u7ecd\u3002
TT \u7cfb\u7edf TN-C
\u4f9b\u7535\u7cfb\u7edf\u2192 TN \u7cfb\u7edf\u2192 TN-S
IT \u7cfb\u7edf TN-C-S
\uff08\u4e00\uff09\u5de5\u7a0b\u4f9b\u7535\u7684\u57fa\u672c\u65b9\u5f0f
\u6839\u636e IEC \u89c4\u5b9a\u7684\u5404\u79cd\u4fdd\u62a4\u65b9\u5f0f\u3001\u672f\u8bed\u6982\u5ff5\uff0c\u4f4e\u538b\u914d\u7535\u7cfb\u7edf\u6309\u63a5\u5730\u65b9\u5f0f\u7684\u4e0d\u540c\u5206\u4e3a\u4e09\u7c7b\uff0c\u5373 TT \u3001 TN \u548c IT \u7cfb\u7edf\uff0c\u5206\u8ff0\u5982\u4e0b\u3002
\uff08 1 \uff09 TT \u65b9\u5f0f\u4f9b\u7535\u7cfb\u7edf TT \u65b9\u5f0f\u662f\u6307\u5c06\u7535\u6c14\u8bbe\u5907\u7684\u91d1\u5c5e\u5916\u58f3\u76f4\u63a5\u63a5\u5730\u7684\u4fdd\u62a4\u7cfb\u7edf\uff0c\u79f0\u4e3a\u4fdd\u62a4\u63a5\u5730\u7cfb\u7edf\uff0c\u4e5f\u79f0 TT \u7cfb\u7edf\u3002\u7b2c\u4e00\u4e2a\u7b26\u53f7 T \u8868\u793a\u7535\u529b\u7cfb\u7edf\u4e2d\u6027\u70b9\u76f4\u63a5\u63a5\u5730\uff1b\u7b2c\u4e8c\u4e2a\u7b26\u53f7 T \u8868\u793a\u8d1f\u8f7d\u8bbe\u5907\u5916\u9732\u4e0d\u4e0e\u5e26\u7535\u4f53\u76f8\u63a5\u7684\u91d1\u5c5e\u5bfc\u7535\u90e8\u5206\u4e0e\u5927\u5730\u76f4\u63a5\u8054\u63a5\uff0c\u800c\u4e0e\u7cfb\u7edf\u5982\u4f55\u63a5\u5730\u65e0\u5173\u3002\u5728 TT \u7cfb\u7edf\u4e2d\u8d1f\u8f7d\u7684\u6240\u6709\u63a5\u5730\u5747\u79f0\u4e3a\u4fdd\u62a4\u63a5\u5730\uff0c\u5982\u56fe 1-1 \u6240\u793a\u3002\u8fd9\u79cd\u4f9b\u7535\u7cfb\u7edf\u7684\u7279\u70b9\u5982\u4e0b\u3002
1 \uff09\u5f53\u7535\u6c14\u8bbe\u5907\u7684\u91d1\u5c5e\u5916\u58f3\u5e26\u7535\uff08\u76f8\u7ebf\u78b0\u58f3\u6216\u8bbe\u5907\u7edd\u7f18\u635f\u574f\u800c\u6f0f\u7535\uff09\u65f6\uff0c\u7531\u4e8e\u6709\u63a5\u5730\u4fdd\u62a4\uff0c\u53ef\u4ee5\u5927\u5927\u51cf\u5c11\u89e6\u7535\u7684\u5371\u9669\u6027\u3002\u4f46\u662f\uff0c\u4f4e\u538b\u65ad\u8def\u5668\uff08\u81ea\u52a8\u5f00\u5173\uff09\u4e0d\u4e00\u5b9a\u80fd\u8df3\u95f8\uff0c\u9020\u6210\u6f0f\u7535\u8bbe\u5907\u7684\u5916\u58f3\u5bf9\u5730\u7535\u538b\u9ad8\u4e8e\u5b89\u5168\u7535\u538b\uff0c\u5c5e\u4e8e\u5371\u9669\u7535\u538b\u3002
2 \uff09\u5f53\u6f0f\u7535\u7535\u6d41\u6bd4\u8f83\u5c0f\u65f6\uff0c\u5373\u4f7f\u6709\u7194\u65ad\u5668\u4e5f\u4e0d\u4e00\u5b9a\u80fd\u7194\u65ad\uff0c\u6240\u4ee5\u8fd8\u9700\u8981\u6f0f\u7535\u4fdd\u62a4\u5668\u4f5c\u4fdd\u62a4\uff0c\u56f0\u6b64 TT \u7cfb\u7edf\u96be\u4ee5\u63a8\u5e7f\u3002
3 \uff09 TT \u7cfb\u7edf\u63a5\u5730\u88c5\u7f6e\u8017\u7528\u94a2\u6750\u591a\uff0c\u800c\u4e14\u96be\u4ee5\u56de\u6536\u3001\u8d39\u5de5\u65f6\u3001\u8d39\u6599\u3002
\u73b0\u5728\u6709\u7684\u5efa\u7b51\u5355\u4f4d\u662f\u91c7\u7528 TT \u7cfb\u7edf\uff0c\u65bd\u5de5\u5355\u4f4d\u501f\u7528\u5176\u7535\u6e90\u4f5c\u4e34\u65f6\u7528\u7535\u65f6\uff0c\u5e94\u7528\u4e00\u6761\u4e13\u7528\u4fdd\u62a4\u7ebf\uff0c\u4ee5\u51cf\u5c11\u9700\u63a5\u5730\u88c5\u7f6e\u94a2\u6750\u7528\u91cf\u3002
\u628a\u65b0\u589e\u52a0\u7684\u4e13\u7528\u4fdd\u62a4\u7ebf PE \u7ebf\u548c\u5de5\u4f5c\u96f6\u7ebf N \u5206\u5f00\uff0c\u5176\u7279\u70b9\u662f\uff1a\u2460\u5171\u7528\u63a5\u5730\u7ebf\u4e0e\u5de5\u4f5c\u96f6\u7ebf\u6ca1\u6709\u7535\u7684\u8054\u7cfb\uff1b\u2461\u6b63\u5e38\u8fd0\u884c\u65f6\uff0c\u5de5\u4f5c\u96f6\u7ebf\u53ef\u4ee5\u6709\u7535\u6d41\uff0c\u800c\u4e13\u7528\u4fdd\u62a4\u7ebf\u6ca1\u6709\u7535\u6d41\uff1b\u2462 TT \u7cfb\u7edf\u9002\u7528\u4e8e\u63a5\u5730\u4fdd\u62a4\u5360\u5f88\u5206\u6563\u7684\u5730\u65b9\u3002
\uff08 2 \uff09 TN \u65b9\u5f0f\u4f9b\u7535\u7cfb\u7edf \u8fd9\u79cd\u4f9b\u7535\u7cfb\u7edf\u662f\u5c06\u7535\u6c14\u8bbe\u5907\u7684\u91d1\u5c5e\u5916\u58f3\u4e0e\u5de5\u4f5c\u96f6\u7ebf\u76f8\u63a5\u7684\u4fdd\u62a4\u7cfb\u7edf\uff0c\u79f0\u4f5c\u63a5\u96f6\u4fdd\u62a4\u7cfb\u7edf\uff0c\u7528 TN \u8868\u793a\u3002\u5b83\u7684\u7279\u70b9\u5982\u4e0b\u3002
1 \uff09\u4e00\u65e6\u8bbe\u5907\u51fa\u73b0\u5916\u58f3\u5e26\u7535\uff0c\u63a5\u96f6\u4fdd\u62a4\u7cfb\u7edf\u80fd\u5c06\u6f0f\u7535\u7535\u6d41\u4e0a\u5347\u4e3a\u77ed\u8def\u7535\u6d41\uff0c\u8fd9\u4e2a\u7535\u6d41\u5f88\u5927\uff0c\u662f TT \u7cfb\u7edf\u7684 5.3 \u500d\uff0c\u5b9e\u9645\u4e0a\u5c31\u662f\u5355\u76f8\u5bf9\u5730\u77ed\u8def\u6545\u969c\uff0c\u7194\u65ad\u5668\u7684\u7194\u4e1d\u4f1a\u7194\u65ad\uff0c\u4f4e\u538b\u65ad\u8def\u5668\u7684\u8131\u6263\u5668\u4f1a\u7acb\u5373\u52a8\u4f5c\u800c\u8df3\u95f8\uff0c\u4f7f\u6545\u969c\u8bbe\u5907\u65ad\u7535\uff0c\u6bd4\u8f83\u5b89\u5168\u3002
2 \uff09 TN \u7cfb\u7edf\u8282\u7701\u6750\u6599\u3001\u5de5\u65f6\uff0c\u5728\u6211\u56fd\u548c\u5176\u4ed6\u8bb8\u591a\u56fd\u5bb6\u5e7f\u6cdb\u5f97\u5230\u5e94\u7528\uff0c\u53ef\u89c1\u6bd4 TT \u7cfb\u7edf\u4f18\u70b9\u591a\u3002 TN \u65b9\u5f0f\u4f9b\u7535\u7cfb\u7edf\u4e2d\uff0c\u6839\u636e\u5176\u4fdd\u62a4\u96f6\u7ebf\u662f\u5426\u4e0e\u5de5\u4f5c\u96f6\u7ebf\u5206\u5f00\u800c\u5212\u5206\u4e3a TN-C \u548c TN-S \u7b49\u4e24\u79cd\u3002
\uff08 3 \uff09 TN-C \u65b9\u5f0f\u4f9b\u7535\u7cfb\u7edf \u5b83\u662f\u7528\u5de5\u4f5c\u96f6\u7ebf\u517c\u4f5c\u63a5\u96f6\u4fdd\u62a4\u7ebf\uff0c\u53ef\u4ee5\u79f0\u4f5c\u4fdd\u62a4\u4e2d\u6027\u7ebf\uff0c\u53ef\u7528 NPE \u8868\u793a
\uff08 4 \uff09 TN-S \u65b9\u5f0f\u4f9b\u7535\u7cfb\u7edf \u5b83\u662f\u628a\u5de5\u4f5c\u96f6\u7ebf N \u548c\u4e13\u7528\u4fdd\u62a4\u7ebf PE \u4e25\u683c\u5206\u5f00\u7684\u4f9b\u7535\u7cfb\u7edf\uff0c\u79f0\u4f5c TN-S \u4f9b\u7535\u7cfb\u7edf\uff0c TN-S \u4f9b\u7535\u7cfb\u7edf\u7684\u7279\u70b9\u5982\u4e0b\u3002
1 \uff09\u7cfb\u7edf\u6b63\u5e38\u8fd0\u884c\u65f6\uff0c\u4e13\u7528\u4fdd\u62a4\u7ebf\u4e0a\u4e0d\u6709\u7535\u6d41\uff0c\u53ea\u662f\u5de5\u4f5c\u96f6\u7ebf\u4e0a\u6709\u4e0d\u5e73\u8861\u7535\u6d41\u3002 PE \u7ebf\u5bf9\u5730\u6ca1\u6709\u7535\u538b\uff0c\u6240\u4ee5\u7535\u6c14\u8bbe\u5907\u91d1\u5c5e\u5916\u58f3\u63a5\u96f6\u4fdd\u62a4\u662f\u63a5\u5728\u4e13\u7528\u7684\u4fdd\u62a4\u7ebf PE \u4e0a\uff0c\u5b89\u5168\u53ef\u9760\u3002
2 \uff09\u5de5\u4f5c\u96f6\u7ebf\u53ea\u7528\u4f5c\u5355\u76f8\u7167\u660e\u8d1f\u8f7d\u56de\u8def\u3002
3 \uff09\u4e13\u7528\u4fdd\u62a4\u7ebf PE \u4e0d\u8bb8\u65ad\u7ebf\uff0c\u4e5f\u4e0d\u8bb8\u8fdb\u5165\u6f0f\u7535\u5f00\u5173\u3002
4 \uff09\u5e72\u7ebf\u4e0a\u4f7f\u7528\u6f0f\u7535\u4fdd\u62a4\u5668\uff0c\u5de5\u4f5c\u96f6\u7ebf\u4e0d\u5f97\u6709\u91cd\u590d\u63a5\u5730\uff0c\u800c PE \u7ebf\u6709\u91cd\u590d\u63a5\u5730\uff0c\u4f46\u662f\u4e0d\u7ecf\u8fc7\u6f0f\u7535\u4fdd\u62a4\u5668\uff0c\u6240\u4ee5 TN-S \u7cfb\u7edf\u4f9b\u7535\u5e72\u7ebf\u4e0a\u4e5f\u53ef\u4ee5\u5b89\u88c5\u6f0f\u7535\u4fdd\u62a4\u5668\u3002
5 \uff09 TN-S \u65b9\u5f0f\u4f9b\u7535\u7cfb\u7edf\u5b89\u5168\u53ef\u9760\uff0c\u9002\u7528\u4e8e\u5de5\u4e1a\u4e0e\u6c11\u7528\u5efa\u7b51\u7b49\u4f4e\u538b\u4f9b\u7535\u7cfb\u7edf\u3002\u5728\u5efa\u7b51\u5de5\u7a0b\u5de5\u5de5\u524d\u7684\u201c\u4e09\u901a\u4e00\u5e73\u201d\uff08\u7535\u901a\u3001\u6c34\u901a\u3001\u8def\u901a\u548c\u5730\u5e73\u2014\u2014\u5fc5\u987b\u91c7\u7528 TN-S \u65b9\u5f0f\u4f9b\u7535\u7cfb\u7edf\u3002
\uff08 5 \uff09 TN-C-S \u65b9\u5f0f\u4f9b\u7535\u7cfb\u7edf \u5728\u5efa\u7b51\u65bd\u5de5\u4e34\u65f6\u4f9b\u7535\u4e2d\uff0c\u5982\u679c\u524d\u90e8\u5206\u662f TN-C \u65b9\u5f0f\u4f9b\u7535\uff0c\u800c\u65bd\u5de5\u89c4\u8303\u89c4\u5b9a\u65bd\u5de5\u73b0\u573a\u5fc5\u987b\u91c7\u7528 TN-S \u65b9\u5f0f\u4f9b\u7535\u7cfb\u7edf\uff0c\u5219\u53ef\u4ee5\u5728\u7cfb\u7edf\u540e\u90e8\u5206\u73b0\u573a\u603b\u914d\u7535\u7bb1\u5206\u51fa PE \u7ebf\uff0c TN-C-S \u7cfb\u7edf\u7684\u7279\u70b9\u5982\u4e0b\u3002
1 \uff09\u5de5\u4f5c\u96f6\u7ebf N \u4e0e\u4e13\u7528\u4fdd\u62a4\u7ebf PE \u76f8\u8054\u901a\uff0c\u5982\u56fe 1-5ND \u8fd9\u6bb5\u7ebf\u8def\u4e0d\u5e73\u8861\u7535\u6d41\u6bd4\u8f83\u5927\u65f6\uff0c\u7535\u6c14\u8bbe\u5907\u7684\u63a5\u96f6\u4fdd\u62a4\u53d7\u5230\u96f6\u7ebf\u7535\u4f4d\u7684\u5f71\u54cd\u3002 D \u70b9\u81f3\u540e\u9762 PE \u7ebf\u4e0a\u6ca1\u6709\u7535\u6d41\uff0c\u5373\u8be5\u6bb5\u5bfc\u7ebf\u4e0a\u6ca1\u6709\u7535\u538b\u964d\uff0c\u56e0\u6b64\uff0c TN-C-S \u7cfb\u7edf\u53ef\u4ee5\u964d\u4f4e\u7535\u52a8\u673a\u5916\u58f3\u5bf9\u5730\u7684\u7535\u538b\uff0c\u7136\u800c\u53c8\u4e0d\u80fd\u5b8c\u5168\u6d88\u9664\u8fd9\u4e2a\u7535\u538b\uff0c\u8fd9\u4e2a\u7535\u538b\u7684\u5927\u5c0f\u53d6\u51b3\u4e8e ND \u7ebf\u7684\u8d1f\u8f7d\u4e0d\u5e73\u8861\u7684\u60c5\u51b5\u53ca ND \u8fd9\u6bb5\u7ebf\u8def\u7684\u957f\u5ea6\u3002\u8d1f\u8f7d\u8d8a\u4e0d\u5e73\u8861\uff0c ND \u7ebf\u53c8\u5f88\u957f\u65f6\uff0c\u8bbe\u5907\u5916\u58f3\u5bf9\u5730\u7535\u538b\u504f\u79fb\u5c31\u8d8a\u5927\u3002\u6240\u4ee5\u8981\u6c42\u8d1f\u8f7d\u4e0d\u5e73\u8861\u7535\u6d41\u4e0d\u80fd\u592a\u5927\uff0c\u800c\u4e14\u5728 PE \u7ebf\u4e0a\u5e94\u4f5c\u91cd\u590d\u63a5\u5730\u3002
2 \uff09 PE \u7ebf\u5728\u4efb\u4f55\u60c5\u51b5\u4e0b\u90fd\u4e0d\u80fd\u8fdb\u5165\u6f0f\u7535\u4fdd\u62a4\u5668\uff0c\u56e0\u4e3a\u7ebf\u8def\u672b\u7aef\u7684\u6f0f\u7535\u4fdd\u62a4\u5668\u52a8\u4f5c\u4f1a\u4f7f\u524d\u7ea7\u6f0f\u7535\u4fdd\u62a4\u5668\u8df3\u95f8\u9020\u6210\u5927\u8303\u56f4\u505c\u7535\u3002
3 \uff09\u5bf9 PE \u7ebf\u9664\u4e86\u5728\u603b\u7bb1\u5904\u5fc5\u987b\u548c N \u7ebf\u76f8\u63a5\u4ee5\u5916\uff0c\u5176\u4ed6\u5404\u5206\u7bb1\u5904\u5747\u4e0d\u5f97\u628a N \u7ebf\u548c PE \u7ebf\u76f8\u8054\uff0c PE \u7ebf\u4e0a\u4e0d\u8bb8\u5b89\u88c5\u5f00\u5173\u548c\u7194\u65ad\u5668\uff0c\u4e5f\u4e0d\u5f97\u7528\u5927\u987e\u517c\u4f5c PE \u7ebf\u3002
\u901a\u8fc7\u4e0a\u8ff0\u5206\u6790\uff0c TN-C-S \u4f9b\u7535\u7cfb\u7edf\u662f\u5728 TN-C \u7cfb\u7edf\u4e0a\u4e34\u65f6\u53d8\u901a\u7684\u4f5c\u6cd5\u3002\u5f53\u4e09\u76f8\u7535\u529b\u53d8\u538b\u5668\u5de5\u4f5c\u63a5\u5730\u60c5\u51b5\u826f\u597d\u3001\u4e09\u76f8\u8d1f\u8f7d\u6bd4\u8f83\u5e73\u8861\u65f6\uff0c TN-C-S \u7cfb\u7edf\u5728\u65bd\u5de5\u7528\u7535\u5b9e\u8df5\u4e2d\u6548\u679c\u8fd8\u662f\u53ef\u884c\u7684\u3002\u4f46\u662f\uff0c\u5728\u4e09\u76f8\u8d1f\u8f7d\u4e0d\u5e73\u8861\u3001\u5efa\u7b51\u65bd\u5de5\u5de5\u5730\u6709\u4e13\u7528\u7684\u7535\u529b\u53d8\u538b\u5668\u65f6\uff0c\u5fc5\u987b\u91c7\u7528 TN-S \u65b9\u5f0f\u4f9b\u7535\u7cfb\u7edf\u3002
\uff08 6 \uff09 IT \u65b9\u5f0f\u4f9b\u7535\u7cfb\u7edf I \u8868\u793a\u7535\u6e90\u4fa7\u6ca1\u6709\u5de5\u4f5c\u63a5\u5730\uff0c\u6216\u7ecf\u8fc7\u9ad8\u963b\u6297\u63a5\u5730\u3002\u6bcf\u4e8c\u4e2a\u5b57\u6bcd T \u8868\u793a\u8d1f\u8f7d\u4fa7\u7535\u6c14\u8bbe\u5907\u8fdb\u884c\u63a5\u5730\u4fdd\u62a4\u3002
TT \u65b9\u5f0f\u4f9b\u7535\u7cfb\u7edf\u5728\u4f9b\u7535\u8ddd\u79bb\u4e0d\u662f\u5f88\u957f\u65f6\uff0c\u4f9b\u7535\u7684\u53ef\u9760\u6027\u9ad8\u3001\u5b89\u5168\u6027\u597d\u3002\u4e00\u822c\u7528\u4e8e\u4e0d\u5141\u8bb8\u505c\u7535\u7684\u573a\u6240\uff0c\u6216\u8005\u662f\u8981\u6c42\u4e25\u683c\u5730\u8fde\u7eed\u4f9b\u7535\u7684\u5730\u65b9\uff0c\u4f8b\u5982\u7535\u529b\u70bc\u94a2\u3001\u5927\u533b\u9662\u7684\u624b\u672f\u5ba4\u3001\u5730\u4e0b\u77ff\u4e95\u7b49\u5904\u3002\u5730\u4e0b\u77ff\u4e95\u5185\u4f9b\u7535\u6761\u4ef6\u6bd4\u8f83\u5dee\uff0c\u7535\u7f06\u6613\u53d7\u6f6e\u3002\u8fd0\u7528 IT \u65b9\u5f0f\u4f9b\u7535\u7cfb\u7edf\uff0c\u5373\u4f7f\u7535\u6e90\u4e2d\u6027\u70b9\u4e0d\u63a5\u5730\uff0c\u4e00\u65e6\u8bbe\u5907\u6f0f\u7535\uff0c\u5355\u76f8\u5bf9\u5730\u6f0f\u7535\u6d41\u4ecd\u5c0f\uff0c\u4e0d\u4f1a\u7834\u574f\u7535\u6e90\u7535\u538b\u7684\u5e73\u8861\uff0c\u6240\u4ee5\u6bd4\u7535\u6e90\u4e2d\u6027\u70b9\u63a5\u5730\u7684\u7cfb\u7edf\u8fd8\u5b89\u5168\u3002
\u4f46\u662f\uff0c\u5982\u679c\u7528\u5728\u4f9b\u7535\u8ddd\u79bb\u5f88\u957f\u65f6\uff0c\u4f9b\u7535\u7ebf\u8def\u5bf9\u5927\u5730\u7684\u5206\u5e03\u7535\u5bb9\u5c31\u4e0d\u80fd\u5ffd\u89c6\u4e86\u3002\u5728\u8d1f\u8f7d\u53d1\u751f\u77ed\u8def\u6545\u969c\u6216\u6f0f\u7535\u4f7f\u8bbe\u5907\u5916\u58f3\u5e26\u7535\u65f6\uff0c\u6f0f\u7535\u7535\u6d41\u7ecf\u5927\u5730\u5f62\u6210\u67b6\u8def\uff0c\u4fdd\u62a4\u8bbe\u5907\u4e0d\u4e00\u5b9a\u52a8\u4f5c\uff0c\u8fd9\u662f\u5371\u9669\u7684\u3002\u53ea\u6709\u5728\u4f9b\u7535\u8ddd\u79bb\u4e0d\u592a\u957f\u65f6\u624d\u6bd4\u8f83\u5b89\u5168\u3002\u8fd9\u79cd\u4f9b\u7535\u65b9\u5f0f\u5728\u5de5\u5730\u4e0a\u5f88\u5c11\u89c1\u3002
\uff08\u4e8c\uff09\u4f9b\u7535\u7ebf\u8def\u7b26\u53f7\u5c0f\u7ed3
1 \uff09\u56fd\u9645\u7535\u5de5\u59d4\u5458\u4f1a\uff08 IEC \uff09\u89c4\u5b9a\u7684\u4f9b\u7535\u65b9\u5f0f\u7b26\u53f7\u4e2d\uff0c\u7b2c\u4e00\u4e2a\u5b57\u6bcd\u8868\u793a\u7535\u529b\uff08\u7535\u6e90\uff09\u7cfb\u7edf\u5bf9\u5730\u5173\u7cfb\u3002\u5982 T \u8868\u793a\u662f\u4e2d\u6027\u70b9\u76f4\u63a5\u63a5\u5730\uff1b I \u8868\u793a\u6240\u6709\u5e26\u7535\u90e8\u5206\u7edd\u7f18\u3002
2 \uff09\u7b2c\u4e8c\u4e2a\u5b57\u6bcd\u8868\u793a\u7528\u7535\u88c5\u7f6e\u5916\u9732\u7684\u53ef\u5bfc\u7535\u90e8\u5206\u5bf9\u5730\u7684\u5173\u7cfb\u3002\u5982 T \u8868\u793a\u8bbe\u5907\u5916\u58f3\u63a5\u5730\uff0c\u5b83\u4e0e\u7cfb\u7edf\u4e2d\u7684\u5176\u4ed6\u4efb\u4f55\u63a5\u5730\u70b9\u65e0\u76f4\u63a5\u5173\u7cfb\uff1b N \u8868\u793a\u8d1f\u8f7d\u91c7\u7528\u63a5\u96f6\u4fdd\u62a4\u3002
3 \uff09\u7b2c\u4e09\u4e2a\u5b57\u6bcd\u8868\u793a\u5de5\u4f5c\u96f6\u7ebf\u4e0e\u4fdd\u62a4\u7ebf\u7684\u7ec4\u5408\u5173\u7cfb\u3002\u5982 C \u8868\u793a\u5de5\u4f5c\u96f6\u7ebf\u4e0e\u4fdd\u62a4\u7ebf\u662f\u5408\u4e00\u7684\uff0c\u5982 TN-C \uff1b S \u8868\u793a\u5de5\u4f5c\u96f6\u7ebf\u4e0e\u4fdd\u62a4\u7ebf\u662f\u4e25\u683c\u5206\u5f00\u7684\uff0c\u6240\u4ee5 PE \u7ebf\u79f0\u4e3a\u4e13\u7528\u4fdd\u62a4\u7ebf\uff0c\u5982 TN-S \u3002
现在农村应该使用TT系统（保护接地），而不是TN-S（保护接零）。TT系统也就是中性点直接接地，电气装置的外露可接近导体通过保护接地线接至与电力系统接地点无关的接地极的低压配电系统。
TT系统配电线路内由同一接地故障保护电路的外露可导电部分，应用PE线连接，并应接至共用的接地极上。当有多级保护时，各级宜有各自独立的接地极。
支持二楼，楼主是要做配电工程么？
TN-C
绛旓細浣犲ソ锛氣斺斺槄1銆佲滈噸澶嶆帴鍦扳 銆佷笌 鈥淧E绾库 涓嶆槸涓涓蹇碉紝瀹屽叏涓嶅悓锛歅E绾挎槸锛堜笁鐩镐簲绾垮埗渚涚數绯荤粺锛夊崟鐙粠鍙樺帇鍣ㄤ腑鎬х偣寮曞嚭鐨勩佷粎浠呭湪鍙樺帇鍣ㄩ偅涓绔槸杩炴帴 鎺ュ湴鏋佺殑銆傗斺斺槄2銆佲滈噸澶嶆帴鍦扳 涓嶅彲浠ラ殢鎰忓畨瑁呯殑锛岄噸澶嶆帴鍦扮殑浣滅敤鏄細涓夌浉鍥涚嚎鍒朵緵鐢电嚎璺緢闀匡紝闆剁嚎鎴潰绉浉瀵圭粏涓涓。娆★紝涓鏃︽柇璺垨...
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