\n\t\u5bf9\u4e8e\u4e09\u76f8\u5e73\u8861\u7535\u8def\u800c\u8a00\uff0c\u4e09\u76f8\u7535\u8def\u529f\u7387\u7684\u8ba1\u7b97\u516c\u5f0f\u662f\uff1aP=1.732IUcos<\/u>φ\u3002<\/p>\n
\n\t\u7531\u4e09\u76f8\u7535\u8def\u529f\u7387\u516c\u5f0f\u53ef\u63a8\u51fa\uff1a<\/p>\n
\n\t\u7ebf\u7535\u6d41\u516c\u5f0f\uff1aI=P\/1.732Ucosφ<\/p>\n
\n\t\u5f0f\u4e2d\uff1aP\u4e3a\u7535\u8def\u529f\u7387\uff0cU\u4e3a\u7ebf\u7535\u538b\uff0c\u4e09\u76f8\u662f380V\uff0ccosφ\u662f\u611f\u6027\u8d1f\u8f7d\u529f\u7387\u56e0\u7d20\uff0c\u4e00\u822c\u7efc\u5408\u53d60.8\u4f60\u7684100KW\u8d1f\u8f7d\u7684\u7ebf\u7535\u6d41\uff1a<\/p>\n
\n\tI=P\/1.732Ucosφ=100000\/1.732*380*0.8=100000\/526.53=190A<\/p>\n
\n\t\u8fd8\u8981\u6839\u636e\u8d1f\u8f7d\u7684\u6027\u8d28\u548c\u6570\u91cf\u4fee\u6b63\u7535\u6d41\u503c\u3002<\/p>\n
\n\t\u5982\u679c\u8d1f\u8f7d\u4e2d\u5927\u7535\u673a\u673a\u591a\uff0c\u7531\u4e8e\u7535\u673a\u7684\u542f\u52a8\u7535\u6d41\u5f88\u5927\uff0c\u662f\u5de5\u4f5c\u7535\u6d41\u76844\u52307\u500d\uff0c\u6240\u4ee5\u8fd8\u8981\u8003\u8651\u7535\u673a\u7684\u542f\u52a8\u7535\u6d41\uff0c\u4f46\u542f\u52a8\u7535\u6d41\u7684\u65f6\u95f4\u4e0d\u662f\u5f88\u957f\uff0c\u4e00\u822c\u5728\u9009\u62e9\u5bfc\u7ebf\u65f6\u53ea\u63091.3\u52301.7\u7684\u7cfb\u6570\u8003\u8651\u3002<\/p>\n
\n\t\u82e5\u53d61.5\uff0c\u90a3\u4e48\u7535\u6d41\u5c31\u662f285A\u3002\u5982\u679c60KW\u8d1f\u8f7d\u4e2d\u6570\u91cf\u591a\uff0c\u5927\u5bb6\u4e0d\u662f\u540c\u65f6\u4f7f\u7528\uff0c\u53ef\u4ee5\u53d6\u4f7f\u7528\u7cfb\u6570\u4e3a0.5\u52300.8\uff0c\u8fd9\u91cc\u53d60.8\uff0c\u7535\u6d41\u5c31\u4e3a228A\u3002\u5c31\u53ef\u4ee5\u6309\u8fd9\u4e2a\u7535\u6d41\u9009\u62e9\u5bfc\u7ebf\u3001\u7a7a\u5f00\u3001\u63a5\u89e6\u5668\u3001\u70ed\u7ee7\u7535\u5668\u7b49\u8bbe\u5907\u3002\u6240\u4ee5\u8ba1\u7b97\u7535\u6d41\u7684\u6b65\u9aa4\u662f\u4e0d\u80fd\u7701\u7565\u3002<\/p>\n
\n\t![\"\"](\"http:\/\/www.szryc.com\/uploads\/allimg\/181117\/12061IN7-1.png\")
<\/p>\n
\n\t\u5bfc\u7ebf\u9009\u62e9\uff1a<\/p>\n
\n\t\u6839\u636e\u67d0\u7535\u7ebf\u5382\u5bb6\u7684\u7535\u7ebf\u5141\u8bb8\u8f7d\u6d41\u91cf\u8868\uff0c\u9009\u752850\u5e73\u65b9\u7684\u94dc\u82af\u6a61\u76ae\u7535\u7ebf\uff0c\u6216\u8005\u900970\u5e73\u65b9\u7684\u94dc\u82af\u5851\u6599\u7535\u7ebf\u3002<\/p>\n
\n\t\u53d8\u538b\u5668\u9009\u62e9\uff1a<\/p>\n
\n\t\u53d8\u538b\u5668\u9009\u62e9\u4e5f\u6709\u5f88\u591a\u6761\u4ef6\uff0c\u8fd9\u91cc\u5c31\u7b80\u5355\u7684\u7528\u603b\u5bb9\u91cf\u9664\u4ee5\u529f\u7387\u56e0\u7d20\u518d\u53d6\u6574\u3002S=P\/cosφ=100\/0.8=125KVA<\/p>\n
\n\t\u9009\u62e9\u5927\u4e8e125KVA\u7684\u53d8\u538b\u5668\u5c31\u53ef\u4ee5\u4e86\u3002<\/p>\n
\n\t50\u5e73\u65b9\u7684\u94dc\u82af\u7535\u7f06\u80fd\u627f\u53d7\u591a\u5c11\u7535\u6d41\u4e5f\u8981\u770b\u6577\u8bbe\u65b9\u5f0f\u548c\u73af\u5883\u6e29\u5ea6\uff0c\u8fd8\u6709\u7535\u7f06\u7684\u7ed3\u6784\u7c7b\u578b\u7b49\u56e0\u7d20\u3002<\/p>\n
\n\t50\u5e73\u65b910\/35KV\u4ea4\u8054\u805a\u4e59\u70ef\u7edd\u7f18\u7535\u7f06\u957f\u671f\u5141\u8bb8\u8f7d\u6d41\u91cf\u7a7a\u6c14\u6577\u8bbe\u957f\u671f\u5141\u8bb8\u8f7d\u6d41\u91cf<\/p>\n
\n\t\uff0810KV\u4e09\u82af\u7535\u7f06\uff09231A\uff0835KV\u5355\u82af\u7535\u7f06\uff09260A\u76f4\u57cb\u6577\u8bbe\u957f\u671f\u5141\u8bb8\u8f7d\u6d41\u91cf(\u571f\u58e4\u70ed\u963b\u7cfb\u6570100°C.cm\/W)\uff0810KV\u4e09\u82af\u7535\u7f06\uff09217A\uff0835KV\u5355\u82af\u7535\u7f06\uff09213A<\/p>\n
\n\t\u4e8c\u3001\u6839\u636e\u529f\u7387\u914d\u7535\u7f06\u7684\u7b80\u6613\u8ba1\u7b97 <\/p>\n
\n\t\u5df2\u77e5\u7535\u673a\u7684\u989d\u5b9a\u529f\u7387\u4e3a22KW,\u989d\u5b9a\u7535\u538b\u4e3a380V\u53d8\u538b\u5668\u8ddd\u4e95\u573a400\u7c73\uff0c\u8bd5\u95ee\u914d\u5f88\u622a\u9762\u79ef\u591a\u5927\u7684\u7535\u7f06\u7ebf?<\/p>\n
\n\t(\u94dc\u7684\u7535\u963b\u7387Ρ\u53d60.0175)(\u4e00)\u6709\u989d\u5b9a\u5bb9\u91cf\u7b97\u51fa\u7535\u673a\u5728\u989d\u5b9a\u529f\u7387\u4e0b\u7684\u989d\u5b9a\u7535\u6d41<\/p>\n
\n\t\u89e3\uff1a\u7531P=S×COSφ\u5f97S=P\/COSφ=22\/0.8=27.5KVA\u5176P\u4e3a\u989d\u5b9a\u529f\u7387,COSφ\u4e3a\u529f\u7387\u56e0\u6570,\u6309\u7535\u673a\u540d\u724c\u53d60.8<\/p>\n
\n\t\u6709S=I×U\u7b97\u51fa\u5728\u989d\u5b9a\u529f\u7387\u4e0b\u7684\u989d\u5b9a\u7535\u6d41I=S\/U=27500\/380=73A\u7531\u8ba1\u7b97\u53e3\u8bc0\u5f97<\/p>\n
\n\t\u4f30\u7b97\u53e3\u8bc0\uff1a<\/p>\n
\n\t\u4e8c\u70b9\u4e94\u4e0b\u4e58\u4ee5\u4e5d\uff0c\u5f80\u4e0a\u51cf\u4e00\u987a\u53f7\u8d70\u3002<\/p>\n
\n\t\u4e09\u5341\u4e94\u4e58\u4e09\u70b9\u4e94\uff0c\u53cc\u53cc\u6210\u7ec4\u51cf\u70b9\u4e94\u3002<\/p>\n
\n\t\u6761\u4ef6\u6709\u53d8\u52a0\u6298\u7b97\uff0c\u9ad8\u6e29\u4e5d\u6298\u94dc\u5347\u7ea7\u3002<\/p>\n
\n\t\u7a7f\u7ba1\u6839\u6570\u4e8c\u4e09\u56db\uff0c\u516b\u4e03\u516d\u6298\u6ee1\u8f7d\u6d41\u3002<\/p>\n
\n\t\u8bf4\u660e\uff1a<\/p>\n
\n\t(1)\u672c\u8282\u53e3\u8bc0\u5bf9\u5404\u79cd\u7edd\u7f18\u7ebf(\u6a61\u76ae\u548c\u5851\u6599\u7edd\u7f18\u7ebf)\u7684\u8f7d\u6d41\u91cf(\u5b89\u5168\u7535\u6d41)\u4e0d\u662f\u76f4\u63a5\u6307\u51fa\uff0c\u800c\u662f"\u622a\u9762\u4e58\u4e0a\u4e00\u5b9a\u7684\u500d\u6570"\u6765\u8868\u793a\uff0c\u901a\u8fc7\u5fc3\u7b97\u800c\u5f97\u3002<\/p>\n
\n\t\u500d\u6570\u968f\u622a\u9762\u7684\u589e\u5927\u800c\u51cf\u5c0f\u3002<\/p>\n
\n\t"\u4e8c\u70b9\u4e94\u4e0b\u4e58\u4ee5\u4e5d\uff0c\u5f80\u4e0a\u51cf\u4e00\u987a\u53f7\u8d70"\u8bf4\u7684\u662f2.5mm’\u53ca\u4ee5\u4e0b\u7684\u5404\u79cd\u622a\u9762\u94dd\u82af\u7edd\u7f18\u7ebf\uff0c\u5176\u8f7d\u6d41\u91cf\u7ea6\u4e3a\u622a\u9762\u6570\u76849\u500d\u3002\u59822.5mm’\u5bfc\u7ebf\uff0c\u8f7d\u6d41\u91cf\u4e3a2.5×9=22.5(A)\u3002\u4ece4mm’\u53ca\u4ee5\u4e0a\u5bfc\u7ebf\u7684\u8f7d\u6d41\u91cf\u548c\u622a\u9762\u6570\u7684\u500d\u6570\u5173\u7cfb\u662f\u987a\u7740\u7ebf\u53f7\u5f80\u4e0a\u6392\uff0c\u500d\u6570\u9010\u6b21\u51cfl\uff0c\u53734×8\u30016×7\u300110×6\u300116×5\u300125×4\u3002<\/p>\n
\n\t"\u4e09\u5341\u4e94\u4e58\u4e09\u70b9\u4e94\uff0c\u53cc\u53cc\u6210\u7ec4\u51cf\u70b9\u4e94"\uff0c\u8bf4\u7684\u662f35mm"\u7684\u5bfc\u7ebf\u8f7d\u6d41\u91cf\u4e3a\u622a\u9762\u6570\u76843.5\u500d\uff0c\u537335×3.5=122.5(A)\u3002\u4ece50mm’\u53ca\u4ee5\u4e0a\u7684\u5bfc\u7ebf\uff0c\u5176\u8f7d\u6d41\u91cf\u4e0e\u622a\u9762\u6570\u4e4b\u95f4\u7684\u500d\u6570\u5173\u7cfb\u53d8\u4e3a\u4e24\u4e2a\u4e24\u4e2a\u7ebf\u53f7\u6210\u4e00\u7ec4\uff0c\u500d\u6570\u4f9d\u6b21\u51cf0.5\u3002\u537350\u300170mm’<\/p>\n
\n\t\u5bfc\u7ebf\u7684\u8f7d\u6d41\u91cf\u4e3a\u622a\u9762\u6570\u76843\u500d;95\u3001120mm"\u5bfc\u7ebf\u8f7d\u6d41\u91cf\u662f\u5176\u622a\u9762\u79ef\u6570\u76842.5\u500d\uff0c\u4f9d\u6b21\u7c7b\u63a8\u3002<\/p>\n
\n\t"\u6761\u4ef6\u6709\u53d8\u52a0\u6298\u7b97\uff0c\u9ad8\u6e29\u4e5d\u6298\u94dc\u5347\u7ea7"\u3002<\/p>\n
\n\t\u4e0a\u8ff0\u53e3\u8bc0\u662f\u94dd\u82af\u7edd\u7f18\u7ebf\u3001\u660e\u6577\u5728\u73af\u5883\u6e29\u5ea625\u2103\u7684\u6761\u4ef6\u4e0b\u800c\u5b9a\u7684\u3002<\/p>\n
\n\t\u82e5\u94dd\u82af\u7edd\u7f18\u7ebf\u660e\u6577\u5728\u73af\u5883\u6e29\u5ea6\u957f\u671f\u9ad8\u4e8e25\u2103\u7684\u5730\u533a\uff0c\u5bfc\u7ebf\u8f7d\u6d41\u91cf\u53ef\u6309\u4e0a\u8ff0\u53e3\u8bc0\u8ba1\u7b97\u65b9\u6cd5\u7b97\u51fa\uff0c\u7136\u540e\u518d\u6253\u4e5d\u6298\u5373\u53ef;<\/p>\n
\n\t\u5f53\u4f7f\u7528\u7684\u4e0d\u662f\u94dd\u7ebf\u800c\u662f\u94dc\u82af\u7edd\u7f18\u7ebf\uff0c\u5b83\u7684\u8f7d\u6d41\u91cf\u8981\u6bd4\u540c\u89c4\u683c\u94dd\u7ebf\u7565\u5927\u4e00\u4e9b\uff0c\u53ef\u6309\u4e0a\u8ff0\u53e3\u8bc0\u65b9\u6cd5\u7b97\u51fa\u6bd4\u94dd\u7ebf\u52a0\u5927\u4e00\u4e2a\u7ebf\u53f7\u7684\u8f7d\u6d41\u91cf\u3002<\/p>\n
\n\t\u598216mm’\u94dc\u7ebf\u7684\u8f7d\u6d41\u91cf\uff0c\u53ef\u630925mm2\u94dd\u7ebf\u8ba1\u7b9716×5=80\u53ef\u77e5\u9009\u752816\u5e73\u65b9\u7684\u5408\u9002<\/p>\n
\n\t\u518d\u7531\u5141\u8bb8\u538b\u964d\u7b97\u5bfc\u7ebf\u6a2a\u622a\u9762\u79ef\u7535\u673a\u5141\u8bb8\u6700\u4f4e\u5de5\u4f5c\u7535\u538b\u4e3a\u6b64360V,\u53d8\u538b\u5668\u7684\u526f\u8fb9\u7535\u538b\u4e3a380V\uff0c\u5728\u989d\u5b9a\u529f\u7387\u4e0b\u5141\u8bb8\u7684\u6700\u5927\u538b\u964d\u4e3a\u4e3a\u25b3U\u4e3a20V\uff0c\u5728\u989d\u5b9a\u529f\u7387\u4e0b\u5141\u8bb8\u7684\u7535\u963b\u4e3a<\/p>\n
\n\tR\u7ebf=\u25b3U\/I=20\/73=0.27Ω<\/p>\n
\n\t\u7531R\u7ebf=ΡL\/S\uff0c\u7b97\u51fa\u5bfc\u7ebf\u6a2a\u622a\u9762\u79ef\uff1aS=ΡL\/R\u7ebf<\/p>\n
\n\t=0.0175×400\/0.27Ω=24.62mm\u5e73\u65b9<\/p>\n
\n\t\u7ed3\u8bba\uff1a\u5e94\u900925\u5e73\u65b9\u7684\u94dc\u7535\u7f06<\/p>\n
\n\t\u4e09\u3001\u5982\u4f55\u9009\u7528\u65ad\u8def\u5668\uff0c\u70ed\u7ee7\u7535\u5668<\/p>\n
\n\t\u600e\u4e48\u6839\u636e\u7535\u6d41\u6765\u9009\u62e9\u591a\u5927\u622a\u9762\u79ef\u7684\u7535\u7f06\uff0c\u6211\u4eec\u9009\u62e9\u7684\u7535\u7f06\u4e3a\u94dc\u82af\u7535\u7f06\u3002<\/p>\n
\n\t\u6211\u4eec\u4e3e\u4f8b\u8bf4\u660e\uff0c\u6211\u4eec\u8981\u7ed9\u4e00\u53f018.5KW\u7684\u7535\u673a\u914d\u7ebf\uff0c\u53ef\u4ee5\u7b97\u51fa\u5b83\u7684\u989d\u5b9a\u7535\u6d41\u4e3a37A\uff0c\u4e5f\u662f\u6839\u636e\u7ecf\u9a8c1\u5e73\u65b9\u6beb\u7c73\u94dc\u7ebf\u53ef\u4ee5\u901a\u8fc74~6A\u7684\u7535\u6d41\uff0c\u6211\u4eec\u53d6\u5176\u4e2d\u95f4\u503c5A\uff0c\u90a3\u4e48\u7535\u7f06\u7ebf\u7684\u622a\u9762\u79ef\u5e94\u4e3a37\/5=6.4\u5e73\u65b9\u6beb\u7c73\u3002\u6211\u4eec\u7684\u6807\u51c6\u7535\u7f06\u67096\u5e73\u65b9\u6beb\u7c73\u548c\u5e73\u517110\u5e73\u65b9\u6beb\u7c73\u7684\uff0c\u4e3a\u4e86\u4fdd\u8bc1\u53ef\u9760\u6027\uff0c\u6211\u4eec\u9009\u62e910\u5e73\u65b9\u7684\u7535\u7f06\u3002\u5176\u5b9e\u5177\u4f53\u9009\u62e9\u4e2d\u6211\u4eec\u4e5f\u53ef\u80fd\u4f1a\u9009\u62e96\u5e73\u65b9\u7684\uff0c\u8fd9\u8981\u7efc\u5408\u8003\u8651\uff0c\u8d1f\u8f7d\u5de5\u4f5c\u65f6\u6d88\u8017\u7684\u529f\u7387\u662f\u591a\u5927\uff0c\u5982\u679c\u53ea\u6709\u989d\u5b9a\u768460%\u4e0d\u5230\u7684\u8bdd\uff0c\u53ef\u4ee5\u8fd9\u6837\u9009\u62e9\uff0c\u5982\u679c\u57fa\u672c\u4e0a\u8981\u5de5\u4f5c\u5728\u989d\u5b9a\u529f\u7387\u9644\u8fd1\uff0c\u90a3\u53ea\u80fd\u9009\u62e910\u5e73\u65b9\u7684\u7535\u7f06\u4e86\u3002<\/p>\n
\n\t\u5982\u4f55\u6839\u636e\u7535\u673a\u7684\u529f\u7387\uff0c\u8003\u8651\u7535\u673a\u7684\u989d\u5b9a\u7535\u538b\uff0c\u7535\u6d41\u914d\u7ebf\uff0c\u9009\u7528\u65ad\u8def\u5668\uff0c\u70ed\u7ee7\u7535\u5668<\/p>\n
\n\t\u4e09\u76f8\u4e8c\u767e\u4e8c\u7535\u673a\uff0c\u5343\u74e6\u4e09\u70b9\u4e94\u5b89\u57f9\u3002<\/p>\n
\n\t\u5e38\u7528\u4e09\u767e\u516b\u7535\u673a\uff0c\u4e00\u4e2a\u5343\u74e6\u4e24\u5b89\u57f9\u3002<\/p>\n
\n\t\u4f4e\u538b\u516d\u767e\u516d\u7535\u673a\uff0c\u5343\u74e6\u4e00\u70b9\u4e8c\u5b89\u57f9\u3002<\/p>\n
\n\t\u9ad8\u538b\u4e09\u5343\u4f0f\u7535\u673a\uff0c\u56db\u4e2a\u5343\u74e6\u4e00\u5b89\u57f9\u3002<\/p>\n
\n\t\u9ad8\u538b\u516d\u5343\u4f0f\u7535\u673a\uff0c\u516b\u4e2a\u5343\u74e6\u4e00\u5b89\u57f9\u3002<\/p>\n
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