电线电缆25平方直径是多少谁知道 电线截面25平方毫米直径是多少？
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S=0.25\u03c0D²\uff08S\u8868\u793a\u622a\u9762\u79ef\uff0c\u03c0\u8868\u793a\u5706\u5468\u7387\uff0cD\u8868\u793a\u76f4\u5f84\uff09
D=\u221a\uff084S\u00f7\u03c0\uff09=\u221a\uff084\u00d725\u00f73.14\uff09=5.643\uff08\u6beb\u7c73\uff09
\u6269\u5c55\u8d44\u6599\uff1a
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\u5706\u67f1\u4f53\u7684\u4f53\u79efV=0.25\u03c0D²h\uff0c\u5706\u7684\u9762\u79efS=\u03c0r²=0.25\u03c0D²\uff08r\u4e3a\u5706\u7684\u534a\u5f84\uff0cD\u4e3a\u5706\u7684\u76f4\u5f84\uff09\uff0c\u6240\u4ee5\u53ef\u4ee5\u63a8\u5bfc\u51fa\u5706\u7684\u76f4\u5f84D=\u221a\uff084S\u00f7\u03c0\uff09\u3002
\u5706\u662f\u4e00\u79cd\u51e0\u4f55\u56fe\u5f62\u3002\u6839\u636e\u5b9a\u4e49\uff0c\u901a\u5e38\u7528\u5706\u89c4\u6765\u753b\u5706\u3002 \u540c\u5706\u5185\u5706\u7684\u76f4\u5f84\u3001\u534a\u5f84\u957f\u5ea6\u6c38\u8fdc\u76f8\u540c\uff0c\u5706\u6709\u65e0\u6570\u6761\u534a\u5f84\u548c\u65e0\u6570\u6761\u76f4\u5f84\u3002\u5706\u662f\u8f74\u5bf9\u79f0\u3001\u4e2d\u5fc3\u5bf9\u79f0\u56fe\u5f62\u3002\u5bf9\u79f0\u8f74\u662f\u76f4\u5f84\u6240\u5728\u7684\u76f4\u7ebf\u3002 \u540c\u65f6\uff0c\u5706\u53c8\u662f\u201c\u6b63\u65e0\u9650\u591a\u8fb9\u5f62\u201d\uff0c\u800c\u201c\u65e0\u9650\u201d\u53ea\u662f\u4e00\u4e2a\u6982\u5ff5\u3002\u5f53\u591a\u8fb9\u5f62\u7684\u8fb9\u6570\u8d8a\u591a\u65f6\uff0c\u5176\u5f62\u72b6\u3001\u5468\u957f\u3001\u9762\u79ef\u5c31\u90fd\u8d8a\u63a5\u8fd1\u4e8e\u5706\u3002\u6240\u4ee5\uff0c\u4e16\u754c\u4e0a\u6ca1\u6709\u771f\u6b63\u7684\u5706\uff0c\u5706\u5b9e\u9645\u4e0a\u53ea\u662f\u6982\u5ff5\u6027\u7684\u56fe\u5f62\u3002
\u5706\u7684\u9762\u79ef\u8ba1\u7b97\u516c\u5f0f\uff1aS=\u03c0r²\u6216S=\u03c0d²\u00f74\u6216S=C²\u00f7\uff084\u03c0\uff09
\u5706\u7684\u9762\u79ef\u6c42\u76f4\u5f84\uff1ad=2\u221a\uff08S\u00f7\u03c0\uff09=\u221a\uff084S\u00f7\u03c0\uff09
\u5706\u662f\u8f74\u5bf9\u79f0\u56fe\u5f62\uff0c\u5176\u5bf9\u79f0\u8f74\u662f\u4efb\u610f\u4e00\u6761\u901a\u8fc7\u5706\u5fc3\u7684\u76f4\u7ebf\u3002\u5706\u4e5f\u662f\u4e2d\u5fc3\u5bf9\u79f0\u56fe\u5f62\uff0c\u5176\u5bf9\u79f0\u4e2d\u5fc3\u662f\u5706\u5fc3\u3002
\u5782\u5f84\u5b9a\u7406\uff1a\u5782\u76f4\u4e8e\u5f26\u7684\u76f4\u5f84\u5e73\u5206\u8fd9\u6761\u5f26\uff0c\u5e76\u4e14\u5e73\u5206\u5f26\u6240\u5bf9\u76842\u6761\u5f27\u3002
\u5782\u5f84\u5b9a\u7406\u7684\u9006\u5b9a\u7406\uff1a\u5e73\u5206\u5f26\uff08\u4e0d\u662f\u76f4\u5f84\uff09\u7684\u76f4\u5f84\u5782\u76f4\u4e8e\u5f26\uff0c\u5e76\u4e14\u5e73\u5206\u5f26\u6240\u5bf9\u76842\u6761\u5f27\u3002
\u53c2\u8003\u8d44\u6599\u6765\u6e90\uff1a\u767e\u5ea6\u767e\u79d1-\u5706
2.5\u5e73\u65b9\u6beb\u7c73\u7684\u56fd\u6807\u7535\u7ebf\u76f4\u5f84\u662f1.785\u6beb\u7c73
\u56fd\u6807\u7535\u7ebf\u4e00\u822c\u8981\u6c42\u76f4\u6d41\u7535\u963b\u7b26\u5408\u6807\u51c6\u8981\u6c42\uff0c\u5b9e\u9645\u5916\u5f84\u8fbe\u52301.75mm\u5c31\u80fd\u7b26\u5408\u56fd\u6807\u76f4\u6d41\u7535\u963b\u8981\u6c42\u3002
\u56fd\u6807\u7535\u7ebf\uff1a\u5c31\u662f\u5b8c\u5168\u6309\u7167\u56fd\u6807\u6765\u751f\u4ea7\u7684\u7535\u7ebf\u3002\u4e00\u822c\u5bb6\u7528\u3001\u5e38\u89c1\u7684\u7535\u7ebf\u90fd\u662f\u56fd\u5bb6\u6807\u51c6\u89c4\u683c\u6027\u80fd\u7684\uff0c\u56fd\u6807\u5728\u7535\u7ebf\u7684\u5916\u89c2\u6807\u51c6\u3001\u673a\u68b0\u5f3a\u5ea6\u3001\u62a4\u5957\u7684\u7edd\u7f18\u3001\u7ebf\u963b\u3001\u9ad8\u4f4e\u6e29\u51b2\u51fb\u7b49\u65b9\u9762\u6709\u5177\u4f53\u7684\u89c4\u5b9a\u3002
\u5e73\u65b9\uff1a\u6307\u7535\u7ebf\u7684\u6a2a\u622a\u9762\u79ef\uff0c\u4e00\u822c\u5355\u4f4d\u662f\u5e73\u65b9\u6beb\u7c73\u3002
\u6839\u636e\u5706\u9762\u79ef\u7684\u8ba1\u7b97\u516c\u5f0f\uff0c\u03c0r²=2.5
r²=2.5/3.14=0.7962
r=\u221a0.7962=0.8925
2r=1.785
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\u8861\u91cf\u6807\u51c6
1\u3001\u5916\u89c2\u6807\u51c6,\u7535\u7ebf\u4e0a\u5fc5\u987b\u6709\u8ba4\u8bc1\u6807\u5fd7\u3001\u5236\u9020\u5546\u3001\u7ebf\u5f84\u7b49, \u5730\u7ebf\u7528\u9ec4\u7eff\u8272\u7edd\u7f18\u5c42
2\u3001\u673a\u68b0\u5f3a\u5ea6
3\u3001\u62a4\u5957\u7684\u7edd\u7f18(\u4e00\u822c\u5927\u4e8e100M\u03a9)\u548c\u8010\u538b\u5f3a\u5ea6(500V\u4ee5\u4e0b1500V)
4\u3001\u7ebf\u963b(\u4e00\u5b9a\u7684\u7ebf\u5f84\u3001\u7535\u5bfc\u7387\u3001\u957f\u5ea6\u4e0b\u4e0d\u5927\u4e8e\u4e00\u5b9a\u7684\u7535\u963b)
5\u3001\u9ad8\u6e29\u51b2\u51fb150\u5ea6\u4e0b\uff0c\u4f4e\u6e29-30\u5ea6\u4e0b\u7535\u7ebf\u4e0d\u5f97\u51fa\u73b0\u5f00\u88c2\u7b49\u3002
\u7535\u7ebf\u7684\u622a\u9762\u6307\u7684\u662f\u7535\u7ebf\u5185\u94dc\u82af\u7684\u622a\u9762\u3002\u4f4f\u5b85\u5185\u5e38\u7528\u7684\u7535\u7ebf\u622a\u9762\u6709 0.5m2\u30011m2\u30011.5m2 \u3001 2 .5m2 \u3001 4m2 \u3001 6m2 \u3001 10m2 \u3001 16m2 \u3001 25m2 \u3001 35m2 \u3001 50m2 \u7b49\u3002
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\u5bfc\u7ebf\u622a\u9762\u8d8a\u5927\uff0c\u5b83\u6240\u80fd\u901a\u8fc7\u7684\u7535\u6d41\u4e5f\u8d8a\u5927.
\u91c7\u7528\u5178\u578b\u7684\u56db\u7ebf\u5236\u6d4b\u91cf\u6cd5\u3002\u4ee5\u671f\u63d0\u9ad8\u6d4b\u91cf\u7535\u963b\uff08\u5c24\u5176\u662f\u4f4e\u963b\uff09\u7684\u51c6\u786e\u5ea6\u3002\u7a0b\u63a7\u6052\u6d41\u6e90\u3001\u7a0b\u63a7\u524d\u7f6e\u653e\u5927\u5668\u3001A/D\u8f6c\u6362\u5668\u6784\u6210\u4e86\u6d4b\u91cf\u7535\u8def\u7684\u4e3b\u4f53\u3002\u4e2d\u592e\u63a7\u5236\u5355\u5143\u901a\u8fc7\u63a7\u5236\u6052\u6d41\u6e90\u7ed9\u5916\u90e8\u5f85\u6d4b\u8d1f\u8f7d\u65bd\u52a0\u4e00\u4e2a\u6052\u5b9a\u3001\u9ad8\u7cbe\u5ea6\u7684\u7535\u6d41\uff0c\u7136\u540e\uff0c\u5c06\u6240\u83b7\u5f97\u7684\u6570\u636e\uff08\u5305\u62ec\u6d4b\u8bd5\u7535\u538b\u3001\u5f53\u524d\u7684\u6d4b\u8bd5\u7535\u6d41\u7b49\uff09\u8fdb\u884c\u5904\u7406\uff0c\u5f97\u5230\u5b9e\u9645\u7535\u963b\u503c\u3002
\u53ef\u5b58\u50a8255\u8bd5\u9a8c\u6570\u636e\uff0c\u5e76\u4e14\u53ef\u6253\u5370\u5b58\u50a8\u7684\u6240\u6709\u8bd5\u9a8c\u6570\u636e\u3002\u4eea\u5668\u590d\u4f4d\u3001\u6389\u7535\u65f6\u6240\u5b58\u50a8\u7684\u6570\u636e\u5747\u4e0d\u4e22\u5931\u3002
\u53c2\u8003\u8d44\u6599\uff1a\u767e\u5ea6\u767e\u79d1\u2014\u2014\u56fd\u6807\u7535\u7ebf
如果是多股导体,绞合外径约6.4~6.8mm
绛旓細25骞虫柟鐢电嚎鐩村緞鏄5.64mm銆傚洜涓鐢电嚎鐢电紗閾滆姱鐩村緞鐨勭畻娉曟槸涓涓叕寮忥細S锛堟埅闈㈢Н锛=蟺脳2r锛坮涓哄崐寰勶級锛涙墍浠ョ洿寰勫氨鏄2r=S梅蟺=25梅3.14鈮7.962銆傜洿寰勶紝鏄寚閫氳繃涓骞抽潰鍥惧舰鎴栫珛浣擄紙濡傚渾銆佸渾閿ユ埅闈佺悆銆佺珛鏂逛綋锛変腑蹇冨埌杈逛笂涓ょ偣闂寸殑璺濈锛岄氬父鐢ㄥ瓧姣嶁渄鈥濊〃绀恒傝繛鎺ュ渾鍛ㄤ笂涓ょ偣骞堕氳繃鍦嗗績鐨勭嚎娈电О鍦...
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绛旓細鍥芥爣YJV3*25+2*16鐢电紗杩戜技澶栧緞绾︼細28mm銆傚浗鏍嘫JV 4*50+1*25鐢电紗杩戜技澶栧緞绾︼細32mm銆25骞虫柟涓鑺鐢电紗绾閾滅嚎鐩村緞16.4mm銆傞摐鑺鏂欑粷缂樼數鍔鐢电紗鐩村緞琛ㄦ湁锛25骞虫柟鐨勭數缂嗭紝鍗曡姱鐩村緞鏄16.4mm锛涘弻鑺洿寰勬槸29.4mm锛涗笁鑺洿寰勬槸31.2mm锛涘洓鑺洿寰勬槸34.1mm锛涗簲鑺洿寰勬槸37.3mm銆25骞虫柟閾滅嚎鏈夊绮 25骞虫柟...
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绛旓細25骞虫柟涓鑺鐢电紗绾閾滅嚎鐩村緞16.4mm銆傛煡VV32 YJV32 閾滆姱濉戞枡缁濈紭鐢靛姏鐢电紗鐩村緞琛ㄦ湁锛25骞虫柟鐨勭數缂嗭紝鍗曡姱鐩村緞鏄16.4mm锛涘弻鑺洿寰勬槸29.4mm锛涗笁鑺洿寰勬槸31.2mm锛涘洓鑺洿寰勬槸34.1mm锛涗簲鑺洿寰勬槸37.3mm銆備竴鑸數缂嗙殑鐩村緞锛岄潪閾犺YJV鐨勭洿寰勮緝灏忥紝闈為摖瑁匳V鐨勭洿寰勬涔嬶紱閾犺YJV鐨勭洿寰勮緝澶э紝閾犺VV鐨勭洿寰勬渶澶...
绛旓細2.1脳7銆備笅闈㈢殑鍚勭瑙勬牸鐨鐢垫簮绾绾胯姱鐩村緞澶у皬锛
绛旓細4姣背
