185铜芯电缆传送400V电压200米压降是多少 百米电线压降多少
2.5\u5e73\u65b9\u94dc\u82af\u7ebf\u6bcf\u767e\u7c73\u538b\u964d\u591a\u5c11\uff1f\u3000\u30002.5\u5e73\u65b9\u94dc\u82af\u7ebf\u6bcf\u767e\u7c73\u538b\u964d\u4e3a20.64v\u3002
\u3000\u3000\u67e5\u7535\u7f06\u8f7d\u6d41\u91cf\u8868\uff0c\u67092.5\u5e73\u65b9\u94dc\u7ebf\u7684\u8f7d\u6d41\u91cf\u4e3a30A\uff0c\u4e0b\u9762\u630930A\u8f7d\u6d41\u91cf\u8fdb\u884c\u7535\u538b\u635f\u5931\u8ba1\u7b97\uff1a
\u3000\u3000\u8ddd\u79bb\uff1aL\uff1d100\u7c73\u3000\u3000\u94dc\u7ebf\u7535\u963b\u7387\uff1a\u03c1\uff1d0.0172\u03a9mm²/m\u3002\u3000\u3000\u7535\u7f06\u622a\u9762\u79ef\uff1aS=2.5mm²\u3002\u3000\u3000\u7535\u7f06\u7684\u7535\u963b\uff1aR\uff1d\u03c1\u00d7L/S=0.688\u6b27\u3000\u3000\u7535\u7f06\u7684\u7535\u538b\u964d\u4e3a\uff1aU\uff1dIR=30X0.688=20.64v\u3000\u3000\u7535\u7f06\u7684\u7535\u538b\u635f\u5931\u7387:10.33/220=9.4%\uff08\u6309\u5355\u76f8\u5e02\u7535\u8ba1\u7b97\uff09
\u3000\u3000\u300a\u57ce\u5e02\u914d\u7535\u7f51\u89c4\u5212\u8bbe\u8ba1\u89c4\u8303\u300b\u89c4\u5b9a220V\u7535\u538b\u6ce2\u52a8\u8981\u6c42\u5728+5%\u548c-10%\u4e4b\u95f4\u3002
\u3000\u3000\u5982\u679c\u662f\u5728\u5de5\u7a0b\u4e2d\u4f7f\u7528\u7684\u8bdd\uff0c\u4e00\u822c\u8bbe\u8ba1\u539f\u52191\u5e73\u65b9\u7535\u7f06\u4e0d\u9002\u5408\u7528\u5728380\u4f0f\u7684\u7535\u52a8\u673a\u56de\u8def\u4e2d\uff0c\u8981\u6c42\u7535\u7f06\u622a\u9762\u6700\u5c0f\u4e0d\u5e94\u5c0f\u4e8e2.5\u5e73\u65b9\u3002100\u7c73\u76841\u5e73\u65b9\u538b\u964d\u6ca1\u6709\u8d85\u51fa\u8bbe\u8ba1\u89c4\u5b9a\uff0c\u4f46\u4e5f\u4e0d\u80fd\u7528\u3002
\u3000\u3000\u516c\u5f0f\uff1a
\u3000\u3000\u4ee5\u9001\u7535\u7ebf\u8def\u4e3b\u8981\u8003\u8651\u2018\u7535\u538b\u964d\u2019\uff0c\u8bbe\u5907\u63a5\u7ebf\u4e3b\u8981\u8003\u8651\u2018\u8f7d\u6d41\u91cf\u2019\u7684\u539f\u5219\u8fdb\u884c\u8ba1\u7b97\u3002
\u94dc\u7ebf\u7535\u963b\u7387\u662f0.0172\uff1b
\u7ebf\u8def\u7535\u538b\u964d\u4ee5\u4e0d\u8d85\u8fc7\u4f9b\u7535\u7535\u538b\u76845%\u4e3a\u539f\u5219\u3002\u5c31\u662f400V\u4f9b\u7535\u7ebf\u8def\u7684\u7ebf\u8def\u538b\u964d\u662f\u201020V\uff1b380V\u7684\u8d1f\u8f7d\u7535\u538b\u6700\u4f4e\u4e0d\u5f97\u4f4e\u4e8e361V\uff1b
45KW\u7535\u673a\u6b63\u5e38\u8fd0\u8f6c\u7684\u7535\u6d41\u5728170A\u4e0a\u4e0b\uff0c\u800c\u8d77\u52a8\u7535\u6d41\u8981\u5927\u5f88\u591a\uff0c\u5168\u538b\u8d77\u52a8\u662f\u7535\u6d41\u662f\u6b63\u5e38\u8fd0\u8f6c\u7535\u6d41\u76845-7\u500d\uff0c\u964d\u538b\u8d77\u52a8\u8981\u5c0f\u5f97\u591a\u3002
170\u5b89\u57f9\u7535\u6d41\u8981\u6c42\u7ebf\u8def\u7535\u538b\u964d\u5728 380 x5% =19V\u4ee5\u5185\uff0c\u5982\u679c\u642d\u7ebf\u7aef\u7535\u538b\u5df2\u7ecf\u964d\u5230400x(1\uff0d5%)=380V\uff0c\uff08\u5df2\u7ecf\u964d\u4e865%\uff09\uff0c\u8fd8\u8981\u8003\u8651\u6240\u63a5\u5165\u7684\u7ebf\u8def\u7535\u6d41\u8fd8\u4f1a\u4f7f\u642d\u7ebf\u70b9\u7684\u7535\u538b\u8fdb\u4e00\u6b65\u4e0b\u964d\uff0c\u6211\u4eec\u53ea\u80fd\u628a\u63a5\u5165\u76841000m\u7ebf\u8def\u7535\u538b\u964d\u8bbe\u5b9a\u4e3a10V\uff1b\u90a3\u4e48\u7ebf\u8def\u963b\u6297\u5e94\u5c0f\u4e8e\uff1a
10\uff08V\uff09 /170\uff08A\uff09 = 0.0588\uff08\u03a9\uff09
\u7ebf\u8def\u7535\u963b\u5fc5\u987b\u63a7\u5236\u57280.0588\u03a9\u4ee5\u5185\u3002
\u6839\u636e\u5bfc\u7ebf\u7535\u963b\u7387\uff0c\u94dc\u7ebf\u622a\u9762\u4e3a\uff1a
0.0172 (\u03a9)x 1000(m) /0.0588(\u03a9)=292 m\u33a1
\u53d6\u5927\u4e8e\u7b49\u4e8e300m\u33a1\u94dc\u5bfc\u7ebf\u3002
\u5982\u679c\u7ebf\u8def\u76f4\u63a5\u642d\u5728\u914d\u7535\u53d8\u538b\u5668400V\u7aef\u5b50\u4e0a\uff0c\u60c5\u51b5\u4f1a\u5927\u4e3a\u6539\u89c2\uff1a\u7535\u538b\u964d\u8981\u6c42\u662f\uff1a20V\uff1b
20\uff08V\uff09/ 170\uff08A\uff09= 0.1176(\u03a9)
0.0172 x 1000 / 0.1176 = 146 \u5e73\u65b9\u6beb\u7c73\uff0c
\u53d6150\u5e73\u65b9\u6beb\u7c73\u3002
\u8fd9\u6837\u5728\u8d1f\u8f7d\u7aef\u8fd8\u80fd\u6709380V\u7684\u6807\u51c6\u7535\u538b\u3002
压降很低，最多不会超过5V，主要看配电房到185铜芯线搭接的线路有多大，和距离
要电流多大
压降基本忽略。就看你买的电缆是国标的还是非标的
0伏
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