2.5平方电线的直径是多少？工程 2.5平方的国标电线直径是多少
2.5\u5e73\u65b9\u94dc\u7ebf\u76f4\u5f84\u662f\u591a\u5c112.5\u5e73\u65b9\u7684\u94dc\u7ebf\u76f4\u5f84\u662f1.78mm\u3002
\u77e5\u9053\u7535\u7ebf\u7684\u5e73\u65b9\uff0c\u8ba1\u7b97\u7535\u7ebf\u7684\u534a\u5f84\u7528\u6c42\u5706\u5f62\u9762\u79ef\u7684\u516c\u5f0f\u8ba1\u7b97\uff1a\u7535\u7ebf\u5e73\u65b9\u6570\uff08\u5e73\u65b9\u6beb\u7c73\uff09\uff1d\u5706\u5468\u7387\uff083.14\uff09\u00d7\u7535\u7ebf\u534a\u5f84\uff08\u6beb\u7c73\uff09\u7684\u5e73\u65b9\u3002
2.5\u65b9\u7684\u6a2a\u622a\u9762\u9762\u79ef\u4e3a2.5mm²\uff0c\u7535\u7ebf\u7684\u7ebf\u534a\u5f84\u7684\u5e73\u65b9\u662f\uff1a2.5\u00f7 3.14 = 0.8\uff0c\u518d\u5bf9\u221a0.8\uff0c\u5f97\u51fa\u7ed3\u679cr\uff0c\u518d\u6c42\u76f4\u5f842r\u5f97\u5230\u76f4\u5f84\u7ea6\u4e3a1.78.
\u6269\u5c55\u8d44\u6599\uff1a
\u4e00\u822c\u7535\u7ebf\u89c4\u683c\u6839\u636e\u622a\u9762\u6709\uff1a0.75\u30011.0\u30011.5\u3001 2.5\u3001 4\u30016\u300110\u300116\u300125\u300135\u300150\u300170\u300195\u3001120\u5e73\u65b9\u3002
\u751f\u6d3b\u4e2d\uff0c\u5b9e\u7528\u94dc\u7ebf\u505a\u5bfc\u7ebf\u3002\u5bfc\u7535\u6027\u5f88\u597d\uff0c\u5927\u91cf\u7528\u4e8e\u5236\u9020\u7535\u7ebf\u3001\u7535\u7f06\u3001\u7535\u5237\u7b49\uff1b\u5bfc\u70ed\u6027\u597d\uff0c\u5e38\u7528\u6765\u5236\u9020\u987b\u9632\u78c1\u6027\u5e72\u6270\u7684\u78c1\u5b66\u4eea\u5668\u3001\u4eea\u8868\uff0c\u5982\u7f57\u76d8\u3001\u822a\u7a7a\u4eea\u8868\u7b49\uff1b\u5851\u6027\u6781\u597d\uff0c\u6613\u4e8e\u70ed\u538b\u548c\u51b7\u538b\u529b\u52a0\u5de5\uff0c\u53ef\u5236\u6210\u7ba1\u3001\u68d2\u3001\u7ebf\u3001\u6761\u3001\u5e26\u3001\u677f\u3001\u7b94\u7b49\u94dc\u6750\u3002
\u53c2\u8003\u8d44\u6599\uff1a\u767e\u5ea6\u767e\u79d1\u2014\u2014\u7535\u7ebf\u89c4\u683c
\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
2.5\u5e73\u65b9\u7684\u56fd\u6807\u7535\u7ebf\u76f4\u5f84\u662f1.785\u6beb\u7c73
\u6269\u5c55\u8d44\u6599\uff1a
\u56fd\u6807\u7ebf\u4f18\u7b49\u54c1\u662f100\u00b10.5\u7c73/\u5377
\u975e\u6807\u7ebf\u6709\u7684\u53ea\u670960-75\u7c73/\u5377
1\u3001\u8981\u770b
\u770b\u6709\u65e0\u8d28\u91cf\u4f53\u7cfb\u8ba4\u8bc1\u4e66\uff1b\u770b\u5408\u683c\u8bc1\u662f\u5426\u89c4\u8303\uff1b\u770b\u6709\u65e0\u5382\u540d\u3001\u5382\u5740\u3001\u68c0\u9a8c\u7ae0\u3001\u751f\u4ea7\u65e5\u671f\uff1b\u770b\u7535\u7ebf\u4e0a\u662f\u5426\u5370\u6709\u5546\u6807\u3001\u89c4\u683c\u3001\u7535\u538b\u7b49\u3002\u8fd8\u8981\u770b\u7535\u7ebf\u94dc\u82af\u7684\u6a2a\u65ad\u9762\uff0c\u4f18\u7b49\u54c1\u7d2b\u94dc\u989c\u8272\u5149\u4eae\u3001\u8272\u6cfd\u67d4\u548c\uff0c\u5426\u5219\u4fbf\u662f\u6b21\u54c1\u3002
2\u3001\u8981\u8bd5
\u53ef\u53d6\u4e00\u6839\u7535\u7ebf\u5934\u7528\u624b\u53cd\u590d\u5f2f\u66f2\uff0c\u51e1\u662f\u624b\u611f\u67d4\u8f6f\u3001\u6297\u75b2\u52b3\u5f3a\u5ea6\u597d\u3001\u5851\u6599\u6216\u6a61\u80f6\u624b\u611f\u5f39\u6027\u5927\u4e14\u7535\u7ebf\u7edd\u7f18\u4f53\u4e0a\u65e0\u88c2\u75d5\u7684\u5c31\u662f\u4f18\u7b49\u54c1\u3002
3\u3001\u79f0\u91cd\u91cf
\u8d28\u91cf\u597d\u7684\u7535\u7ebf\uff0c\u4e00\u822c\u90fd\u5728\u89c4\u5b9a\u7684\u91cd\u91cf\u8303\u56f4\u5185\u3002\u5982\u5e38\u7528\u7684\u622a\u9762\u79ef\u4e3a1\uff0e5 mm2\u7684\u5851\u6599\u7edd\u7f18\u5355\u80a1\u94dc\u82af\u7ebf\uff0c\u6bcf100 m\u91cd\u91cf\u4e3a1.8\uff5e1.9 kg\uff1b2\uff0e5 mm2\u7684\u5851\u6599\u7edd\u7f18\u5355\u80a1\u94dc\u82af\u7ebf\uff0c\u6bcf100 m\u91cd\u91cf\u4e3a3\uff5e3.1 kg\uff1b4\uff0e0 mm2\u7684\u5851\u6599\u7edd\u7f18\u5355\u80a1\u94dc\u82af\u7ebf\uff0c\u6bcf100 m\u91cd\u91cf\u4e3a4.4\uff5e4.6 kg\u7b49\u3002\u8d28\u91cf\u5dee\u7684\u7535\u7ebf\u91cd\u91cf\u4e0d\u8db3\uff0c\u8981\u4e48\u957f\u5ea6\u4e0d\u591f\uff0c\u8981\u4e48\u7535\u7ebf\u94dc\u82af\u6742\u8d28\u8fc7\u591a\u3002
4\u3001\u770b\u94dc\u8d28
\u5408\u683c\u7684\u94dc\u82af\u7535\u7ebf\u94dc\u82af\u5e94\u8be5\u662f\u7d2b\u7ea2\u8272\u3001\u6709\u5149\u6cfd\u3001\u624b\u611f\u8f6f\u3002\u800c\u4f2a\u52a3\u7684\u94dc\u82af\u7ebf\u94dc\u82af\u4e3a\u7d2b\u9ed1\u8272\u3001\u504f\u9ec4\u6216\u504f\u767d\uff0c\u6742\u8d28\u591a\uff0c\u673a\u68b0\u5f3a\u5ea6\u5dee\uff0c\u97e7\u6027\u4e0d\u4f73\uff0c\u7a0d\u7528\u529b\u5373\u4f1a\u6298\u65ad\uff0c\u800c\u4e14\u7535\u7ebf\u5185\u5e38\u6709\u65ad\u7ebf\u73b0\u8c61\u3002\u68c0\u67e5\u65f6\uff0c\u4f60\u53ea\u8981\u628a\u7535\u7ebf\u4e00\u5934\u5265\u5f002 cm\uff0c\u7136\u540e\u7528\u4e00\u5f20\u767d\u7eb8\u5728\u94dc\u82af\u4e0a\u7a0d\u5fae\u6413\u4e00\u4e0b\uff0c\u5982\u679c\u767d\u7eb8\u4e0a\u6709\u9ed1\u8272\u7269\u8d28\uff0c\u8bf4\u660e\u94dc\u82af\u91cc\u6742\u8d28\u6bd4\u8f83\u591a\u3002\u53e6\u5916\uff0c\u4f2a\u52a3\u7535\u7ebf\u7edd\u7f18\u5c42\u770b\u4e0a\u53bb\u4f3c\u4e4e\u5f88\u539a\u5b9e\uff0c\u5b9e\u9645\u4e0a\u5927\u591a\u662f\u7528\u518d\u751f\u5851\u6599\u5236\u6210\u7684\uff0c\u65f6\u95f4\u4e00\u957f\uff0c\u7edd\u7f18\u5c42\u4f1a\u8001\u5316\u800c\u6f0f\u7535\u3002
5\u3001\u770b\u4ef7\u683c
\u7531\u4e8e\u5047\u5192\u4f2a\u52a3\u7535\u7ebf\u7684\u5236\u4f5c\u6210\u672c\u4f4e\uff0c\u56e0\u6b64\uff0c\u5546\u8d29\u5728\u9500\u552e\u65f6\uff0c\u5e38\u4ee5\u4ef7\u5ec9\u7269\u7f8e\u4e3a\u5e4c\u5b50\u4f4e\u4ef7\u9500\u552e\uff0c\u4f7f\u4eba\u4e0a\u5f53\u3002
√2.5÷3.14 ×2
=√0.796 ×2
=0.892×2
=1.784≈1.78mm 。
2.5平方电线的直径：
D＝1.13×√2.5≈1.79(mm)
解：3.14/4*d²=2.5，d=1.78mm²
直径1.8mm
绛旓細=1.784鈮1.78mm 銆
绛旓細2.5骞虫柟鐨勬槸1.78mm锛 4骞虫柟鐨勬槸2.25mm 锛6骞虫柟鐨勬槸2.76mm銆傛崲绠楁柟娉曪細 鐭ラ亾鐢电嚎鐨勫钩鏂癸紝璁＄畻鐢电嚎鐨勫崐寰勭敤姹傚渾褰㈤潰绉殑鍏紡璁＄畻锛氱數绾垮钩鏂规暟锛堝钩鏂规绫筹級锛濆渾鍛ㄧ巼锛3.14锛壝楃數绾垮崐寰勶紙姣背锛夌殑骞虫柟 鐭ラ亾鐢电嚎鐨勫钩鏂癸紝璁＄畻绾跨洿寰勪篃鏄繖鏍凤紝濡傦細 2.5鏂圭數绾跨殑绾跨洿寰勬槸锛2.5梅 ...
绛旓細1銆1.5骞虫柟姣背锛屽浣撶洿寰勬槸1.38mm锛2銆2.5骞虫柟姣背锛屽浣撶洿寰勬槸1.78mm锛3銆4骞虫柟姣背锛屽浣撶洿寰勬槸2.25mm 锛4銆6骞虫柟姣背锛屽浣撶洿寰勬槸2.76mm锛5銆 10骞虫柟姣背锛屽浣撶洿寰勬槸1.33*7mm锛6銆16骞虫柟姣背锛屽浣撶洿寰勬槸1.7*7mm锛涙崲绠楁柟娉曪細鐭ラ亾鐢电嚎鐨勫钩鏂癸紝璁＄畻鐢电嚎鐨勫崐寰勫窛姹傚渾褰㈤潰绉殑鍏紡璁＄畻锛氱數...
绛旓細2.5骞虫柟鐢电嚎鐩村緞鏄1.78mm绮銆2.5骞虫柟绾跨殑闈㈢Н涓鑸负2.5骞虫柟锛岄氳繃鍦嗙殑闈㈢Н鍏紡锛氬崐寰勭瓑浜庨潰绉櫎浠ュ渾鍛ㄧ巼鍙绠楀緱鍑2.5骞虫柟绾跨殑鍗婂緞涓0.89mm宸﹀彸锛屽啀灏嗗崐寰勪箻浠2锛屽嵆鍙緱鍑2.5骞虫柟绾跨殑鐩村緞涓1.78mm宸﹀彸锛屽洜姝わ紝2.5骞虫柟鐨勭嚎涓鑸槸1.78mm绮椼傜數绾挎湁绮楃粏涔嬪垎锛岀矖缁嗕笉鍚岋紝鍏剁洿寰勫拰鐢ㄩ斾篃浼氫笉涓鏍...
绛旓細绛旓細2.5骞虫柟銆4骞虫柟銆6骞虫柟鐢电嚎鐨勭洿寰勫垎鍒槸1.78mm銆2.26mm銆2.76mm銆傝В鏋愶細鐢电嚎鍨嬪彿瑙勬牸閲嶈鍙傛暟涔嬩竴灏辨槸鍏垛滄í鎴潰绉濓紝鍗曚綅涓衡滃钩鏂规绫斥濓紝琛屼笟涓鑸畝绉扳滃钩鏂光濄傛牴鎹í鎴潰绉 S=蟺r² 鍙緱 r=鈭( S/蟺)=鈭( 2.5/3.14)鈮0.89mm锛屽垯2.5骞虫柟鐢电嚎鐩村緞 d=2r=2脳0.89=1...
绛旓細2.5骞虫柟鐨勯摐绾鐩村緞鏄1.78mm銆傜煡閬鐢电嚎鐨骞虫柟锛岃绠楃數绾跨殑鍗婂緞鐢ㄦ眰鍦嗗舰闈㈢Н鐨勫叕寮忚绠楋細鐢电嚎骞虫柟鏁帮紙骞虫柟姣背锛夛紳鍦嗗懆鐜囷紙3.14锛壝楃數绾垮崐寰勶紙姣背锛夌殑骞虫柟銆2.5鏂圭殑妯埅闈㈤潰绉负2.5mm²锛岀數绾跨殑绾垮崐寰勭殑骞虫柟鏄細2.5梅 3.14 = 0.8锛屽啀瀵光垰0.8锛屽緱鍑虹粨鏋渞锛屽啀姹傜洿寰...
绛旓細鐩村緞=闈㈢Н/3.14鐨勫钩鏂规牴x2=6.68 mm銆傜數绾跨殑骞虫柟=鍦嗗懆鐜(3.14)脳绾跨洿寰鐨勫钩鏂/4銆35骞虫柟鎰忔濇槸鐢电嚎鐨勫ぇ灏忎负35骞虫柟姣背锛屼篃灏辨槸瀹冪殑鎴潰绉傝绠楀叕寮忔槸锛氭埅闈㈢Н(S)=鍗婂緞鐨勫钩鏂(R)脳娲(蟺)锛屾瘮濡傜嚎寰勪负1.78鐨勭數绾匡紝(1.78梅2)脳3.14=2.48鈮2.5骞虫柟锛屾墍浠2.5骞虫柟鐢电嚎鐨勭洿寰灏辨槸1.78...
绛旓細2.5骞虫柟鐨勬槸1.78 姣背锛4骞虫柟鐨鏄2.25 姣背锛6骞虫柟鐨勬槸2.76 姣背銆傛崲绠楀叕寮忥細鐩村緞涓鎴潰闈㈢Н闄や互鍦嗗懆鐜(3.14)鍐嶅紑鏂,鍐嶄箻浠2銆傜數缂嗚鏍煎氨鏄數绾鐢电紗鐨鑺暟鍜屾埅闈㈠昂瀵哥殑琛ㄧず娉曠殑鍚箟銆傜數鍔涚郴缁熼噰鐢ㄧ殑鐢电嚎鐢电紗浜у搧涓昏鏈夋灦绌鸿８鐢电嚎銆佹眹娴佹帓(姣嶇嚎)銆佺數鍔涚數缂(濉戞枡绾跨紗銆佹补绾稿姏缂(鍩烘湰琚鏂欑數鍔涚數缂...
绛旓細2.5骞虫柟姣背鐨勫浗鏍囩數绾鐩村緞鏄1.785姣背 鍥芥爣鐢电嚎涓鑸姹傜洿娴佺數闃荤鍚堟爣鍑嗚姹傦紝瀹為檯澶栧緞杈惧埌1.75mm灏辫兘绗﹀悎鍥芥爣鐩存祦鐢甸樆瑕佹眰銆傚浗鏍囩數绾匡細灏辨槸瀹屽叏鎸夌収鍥芥爣鏉ョ敓浜х殑鐢电嚎銆備竴鑸鐢ㄣ佸父瑙佺殑鐢电嚎閮芥槸鍥藉鏍囧噯瑙勬牸鎬ц兘鐨勶紝鍥芥爣鍦鐢电嚎鐨澶栬鏍囧噯銆佹満姊板己搴︺佹姢濂楃殑缁濈紭銆佺嚎闃汇侀珮浣庢俯鍐插嚮绛夋柟闈㈡湁鍏蜂綋鐨勮瀹氥傚钩鏂...
绛旓細2.5骞虫柟姣背鐨勫浗鏍囩數绾鐩村緞鏄1.785姣背 鍥芥爣鐢电嚎涓鑸姹傜洿娴佺數闃荤鍚堟爣鍑嗚姹傦紝瀹為檯澶栧緞杈惧埌1.75mm灏辫兘绗﹀悎鍥芥爣鐩存祦鐢甸樆瑕佹眰銆傚浗鏍囩數绾匡細灏辨槸瀹屽叏鎸夌収鍥芥爣鏉ョ敓浜х殑鐢电嚎銆備竴鑸鐢ㄣ佸父瑙佺殑鐢电嚎閮芥槸鍥藉鏍囧噯瑙勬牸鎬ц兘鐨勶紝鍥芥爣鍦鐢电嚎鐨澶栬鏍囧噯銆佹満姊板己搴︺佹姢濂楃殑缁濈紭銆佺嚎闃汇侀珮浣庢俯鍐插嚮绛夋柟闈㈡湁鍏蜂綋鐨勮瀹氥傚钩鏂...
