电缆的截面积怎么计算？ 如何计算电缆截面积
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\u5982\u679c\u4f60\u662f\u4ece\u7535\u7f06\u5382\u4e70\u7535\u7f06\u7684\uff0c\u60f3\u77e5\u9053\u7535\u7f06\u5b9e\u9645\u622a\u9762\uff0c\u4f60\u53ef\u4ee5\u901a\u8fc7\u4ee5\u4e0b\u65b9\u9762\u8ba1\u7b97\uff0c\u9996\u5148\u8981\u77e5\u9053\u7535\u7f06\u7684\u5bfc\u4f53\u4e2d\u5355\u4e1d\u6839\u6570m\uff0c\u6d4b\u91cf\u51fa\u6765\u5355\u4e1d\u76f4\u5f84d\uff0c\u5219\u622a\u9762S=0.7854*m*d*d\uff08mm2\uff09
\u8fd8\u6709\u5c31\u662f\u79f0\u91cd\u6cd5\uff0c\u622a\u53d6\u957f\u5ea6l\uff08m\uff09\u7535\u7f06\uff0c\u53d6\u51fa\u5bfc\u4f53\uff0c\u79f0\u91cf\u5bfc\u4f53\u91cd\u91cfm\uff08kg\uff09\uff0c\u5219\u622a\u9762S=m/8.9/l\uff0c\u5c31\u662f\u5bfc\u4f53\u622a\u9762\u4e86
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电缆是多股线构成的。
测量单根导线的直径，计算出单根导线的截面积，再乘以这根电缆的导线根数。
绛旓細鍏充簬鐢电紗鎴潰绉庝箞绠杩欎釜寰堝浜鸿繕涓嶇煡閬擄紝浠婂ぉ鏉ヤ负澶у瑙ｇ瓟浠ヤ笂鐨勯棶棰橈紝鐜板湪璁╂垜浠竴璧锋潵鐪嬬湅鍚э紒1銆鐢电嚎鐢电紗鐨鍗曚綅閮芥槸骞虫柟姣背锛圡M2锛夋í鎴潰绉=锛堢洿寰/锛夌殑骞虫柟鍐嶄箻浠3.14渚嬪锛2.5骞虫柟鐨凚V绾垮畠鐨勭洿寰勬槸1.78 MM 锛屽畠鐨勫崟鑲℃í鎴潰绉=(1.78/2)*锛1.78/2锛*3.14=2.487194鐢电嚎鐢电紗鐢ㄤ互浼犺緭...
绛旓細鐢电嚎鐢电紗鐨鍗曚綅閮芥槸骞虫柟姣背(MM2)妯鎴潰绉=(鐩村緞/)鐨勫钩鏂瑰啀涔樹互3.14 渚嬪锛2.5骞虫柟鐨凚V绾 瀹冪殑鐩村緞鏄1.78 MM 锛屽畠鐨勫崟鑲℃í鎴潰绉=(1.78/2)*(1.78/2)*3.14=2.487194 鐢电嚎鐢电紗鐢ㄤ互浼犺緭鐢(纾)鑳斤紝淇℃伅鍜屽疄鐜扮數纾佽兘杞崲鐨勭嚎鏉愪骇鍝侊紝骞夸箟鐨勭數绾跨數缂嗕害绠绉颁负鐢电紗锛岀嫮涔夌殑鐢电紗鏄寚缁濈紭鐢电紗锛...
绛旓細鑱氭隘涔欑儻缁濈紭鐢电嚎鏄庢暦鐨勮浇娴侀噺琛ㄥ鍥炬墍绀猴細瀹归噺/棰濆畾鐢靛帇/1.732=棰濆畾鐢垫祦锛涢氳繃鐢垫祦鏌ユ墜鍐屽氨鍙互璁＄畻锛堥渶瑕佽冭檻杩愯娓╁害銆佹暦璁炬柟寮忕瓑锛鐢电紗鐨勬埅闈銆佺粷缂樻按骞崇瓑浜嗐傛湁鍏崇數缂嗙嚎寰勩鎴潰绉銆侀噸閲忎及绠楀叕寮忎竴銆 浼扮畻閾溿侀搧銆侀摑绾跨殑閲嶉噺锛坘g/km锛夐噸閲=鎴潰绉楁瘮閲 S=鎴潰绉紙mm2锛1. 閾滅嚎 W=9S W=閲嶉噺锛...
绛旓細鍗栧簾鍝佸氨涓婂簾鍝佷箣瀹 鎮ㄧ殑闂鎴戞潵鍥炵瓟 鐢电嚎鐢电紗鎴潰绉绠鍏紡濡備笅锛氶鍏堟垜浠鐭ラ亾鐢电嚎鐢电紗瀵间綋鐨勫崐寰勭數绾跨數缂嗗钩鏂规暟锛堝嵆骞虫柟姣背锛夛紳鍦嗗懆鐜囷紙3.14锛壝楃數绾跨數缂嗗浣撳崐寰勶紙姣背锛夌殑骞虫柟濡傛灉鐭ラ亾鐢电嚎鐢电紗鐨骞虫柟锛岃绠楃嚎鐩村緞涔熸槸杩欐牱鏉ョ畻锛屽涓嬶細4鏂鐢电嚎鐨绾跨洿寰勬槸锛4梅 3.14 = 1.27锛屽啀寮鏂瑰緱鍑1....
绛旓細涓鑸摐瀵肩嚎鐨瀹夊叏杞芥祦閲忎负5~8A/mm2锛岄摑瀵肩嚎鐨勫畨鍏ㄨ浇娴侀噺涓3~5A/mm2銆俓x0d\x0a 濡傦細2.5 mm2 BVV閾滃绾垮畨鍏ㄨ浇娴侀噺鐨勬帹鑽愬2.5脳8A/mm2=20A 4 mm2 BVV閾滃绾垮畨鍏ㄨ浇娴侀噺鐨勬帹鑽愬4脳8A/mm2=32A \x0d\x0a浜屻璁＄畻閾滃绾鎴潰绉鍒╃敤閾滃绾跨殑瀹夊叏杞芥祦閲忕殑鎺ㄨ崘鍊5~8A/mm2锛岃绠楀嚭鎵閫夊彇閾...
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绛旓細闂涓:鐢电嚎鎴潰绉鏄粈涔堟剰鎬? 鍦嗘煴浣撳绾挎埅闈㈢Н=3.14*R*R.R涓哄绾垮崐寰.澶氳偂瀵肩嚎鎴潰绉=鍗曟牴瀵肩嚎鐨勬埅闈㈢Н*宸ョ嚎鏍规暟. 涓х嚎銆佺浉绾垮氨鏄伀绾垮拰闆剁嚎 闂浜:濡備綍璁＄畻鐢电紗鎴潰绉 涓銆佷竴鑸摐瀵肩嚎杞芥祦閲忓绾跨殑瀹夊叏杞芥祦閲忔槸鏍规嵁鎵鍏佽鐨勭嚎鑺渶楂樻俯搴︺佸喎鍗存潯浠躲佹暦璁炬潯浠舵潵纭畾鐨勩 涓鑸摐瀵肩嚎鐨勫畨鍏ㄨ浇娴侀噺涓5~8A...
