4X240十1X120有180米能载多少电流？ 4X240+1X120的电缆的直径
\u94dc\u82af\u7535\u7f064x240+1x120\u80fd\u4e58\u591a\u5c11\u74e6\u3000\u3000\u94dc\u82af\u7535\u7f064x240+1x120\u80fd\u627f\u53d7215\u5343\u74e6\u3002
\u3000\u3000\u67e5\u300a\u7535\u6c14\u5de5\u7a0b\u300b\u5e38\u7528\u6570\u636e\u901f\u67e5\u624b\u518c\u77e5240\u5e73\u65b9\u6beb\u7c73\u94dc\u82af\u7535\u7ebf\u80fd\u627f\u53d7436\u7535\u6d41\uff08\u9ecf\u6027\u6d78\u6e0d\u7eb8\u7535\u7f06\u6709\u94a2\u94e0\u62a4\u5957\uff0c\u7a7a\u6c14\u4e2d\u6577\u8bbe\uff09\uff0c\u6216 380A\u7535\u6d41\uff08\u805a\u6c2f\u4e59\u70ef\u7edd\u7f18\u7535\u7f06\u65e0\u94a2\u94e0\u62a4\u5957\uff0c\u57cb\u5730\u6577\u8bbe\uff09\u3002\u56e0\u6b64\u8d1f\u8377\u529f\u7387\u53ef\u5982\u4e0b\u8ba1\u7b97\uff1a
\u3000\u3000P=1.732UIcos\u03c6=1.732x0.38x436x0.75=215KW\u3002
\u3000\u3000\u8fd9\u91cc\u7528\u6807\u51c6\u4e09\u76f8\u5e02\u7535\u7535\u538b\u8ba1\u7b97\uff0ccos\u03c6\u662f\u8d1f\u8f7d\u529f\u7387\u56e0\u6570\uff0c\u4e00\u822c\u7535\u52a8\u673a\u53d60.75 \u3002
\u3000\u3000\u53d6I=380A\u65f6\uff0c\u8d1f\u8377\u529f\u7387\u53ef\u5982\u4e0b\u8ba1\u7b97\uff1a
\u3000\u3000P=1.732UIcos\u03c6=1.732x0.38x380x0.75=187KW\u3002
\u3000\u3000\u7535\u7f06\u8ba1\u7b97\u6761\u4ef6\uff1a
\u3000\u30001.\u7ebf\u82af\u957f\u671f\u5de5\u4f5c\u6e29\u5ea6\uff1a 70\u00b0\uff1b
\u3000\u30002. \u73af\u5883\u6e29\u5ea6\uff1a 40\u00b0 \uff1b
\u3000\u3000
\u4e00\u3001\u7a7f\u7ba1\u76f4\u5f84\u4e0d\u5b9c\u5c0f\u4e8e\u7535\u7f06\u5916\u5f84\u76841.5\u500d\u3002
1\u3001YJV-0.6/1KV\uff1a54.7mm\uff1b
2\u3001YJV22-0.6/1KV\uff1a64.2mm\uff1b
3\u3001VV\u3001VLV\u3001ZR-VV\u3001ZR-VLV\uff1a69.7mm\uff1b
4\u3001VV22\u3001VLV22\u3001ZR-VV22\u3001ZR-VLV22\uff1a74.3mm\uff1b
\u4e8c\u3001\u94dc\u82af\u7535\u7f064x240+1x120\u80fd\u627f\u53d7215\u5343\u74e6\u3002
\u5982\u679c\u662fVV4*240+1*120 \u8fd1\u4f3c\u5916\u5f84\u662f69.7mm\uff1b
\u5982\u679c\u662f VV22 4*240+1*120 \u8fd1\u4f3c\u5916\u5f84\u662f74.3mm \uff1b
\u5982\u679c\u662f YJV4*240+1*120\u8fd1\u4f3c\u5916\u5f84\u662f68.2 mm \uff1b
\u5982\u679c\u662fYJV224*240+1*120 \u8fd1\u4f3c\u5916\u5f84\u662f 74.8mm\u3002
\u6269\u5c55\u8d44\u6599\uff1a
1\u3001\u7535\u7f06\u7ebf\u76f8\u4e92\u4ea4\u53c9\u65f6\uff0c\u9ad8\u538b\u7535\u7f06\u5e94\u5728\u4f4e\u538b\u7535\u7f06\u4e0b\u65b9\u3002\u5982\u679c\u5176\u4e2d\u4e00\u6761\u7535\u7f06\u5728\u4ea4\u53c9\u70b9\u524d\u540e1m\u8303\u56f4\u5185\u7a7f\u7ba1\u4fdd\u62a4\u6216\u7528\u9694\u677f\u9694\u5f00\u65f6\uff0c\u6700\u5c0f\u5141\u8bb8\u8ddd\u79bb\u4e3a0.25m\u3002
2\u3001\u7535\u7f06\u4e0e\u70ed\u529b\u7ba1\u9053\u63a5\u8fd1\u6216\u4ea4\u53c9\u65f6\uff0c\u5982\u6709\u9694\u70ed\u63aa\u65bd\uff0c\u5e73\u884c\u548c\u4ea4\u53c9\u7684\u6700\u5c0f\u8ddd\u79bb\u5206\u522b\u4e3a0.5m\u548c0.25m\u3002
3\u3001\u7535\u7f06\u4e0e\u94c1\u8def\u6216\u9053\u8def\u4ea4\u53c9\u65f6\u5e94\u7a7f\u7ba1\u4fdd\u62a4\uff0c\u4fdd\u62a4\u7ba1\u5e94\u4f38\u51fa\u8f68\u9053\u6216\u8def\u97622m\u4ee5\u5916\u3002
4\u3001\u7535\u7f06\u4e0e\u5efa\u7b51\u7269\u57fa\u7840\u7684\u8ddd\u79bb\uff0c\u5e94\u80fd\u4fdd\u8bc1\u7535\u7f06\u57cb\u8bbe\u5728\u5efa\u7b51\u7269\u6563\u6c34\u4ee5\u5916\uff1b\u7535\u7f06\u5f15\u5165\u5efa\u7b51\u7269\u65f6\u5e94\u7a7f\u7ba1\u4fdd\u62a4\uff0c\u4fdd\u62a4\u7ba1\u4ea6\u5e94\u8d85\u51fa\u5efa\u7b51\u7269\u6563\u6c34\u4ee5\u5916\u3002
\u53c2\u8003\u8d44\u6599\u6765\u6e90\uff1a\u767e\u5ea6\u767e\u79d1-\u7535\u7f06
反过来推算一下:
180米长的240电缆，它的电阻为:
0.0175*180/240=0.0131Ω。
它在最大负载情况下产生的电压降为:
0.0131*360=4.72V。
这个值相当于电源电压的1.2%，小于5%，在正常范围内。说明这根电缆可承受约360A左右的负载电流。
绛旓細240mm²鐨勯摐鑺數缂嗙殑瀹夊叏杞芥祦閲忕郴鏁版渶澶у彧鑳借揪鍒1.5锛屼篃灏辨槸璇达紝鐭窛绂绘椂杩欐牴鐢电紗鐨勬渶澶у畨鍏ㄨ浇娴侀噺绾︿负240*1.5=360A銆傚弽杩囨潵鎺ㄧ畻涓涓:180绫抽暱鐨240鐢电紗锛屽畠鐨勭數闃讳负:0.0175*180/240=0.0131惟銆傚畠鍦ㄦ渶澶ц礋杞芥儏鍐典笅浜х敓鐨勭數鍘嬮檷涓:0.0131*360=4.72V銆傝繖涓肩浉褰撲簬鐢垫簮鐢靛帇鐨1.2%锛屽皬...
绛旓細閾滅殑姣旈噸锛8.9X1000Kg/绔嬫柟绫筹紱4X240+1X120鐨勭數缂嗭細4X240+1X120=1080骞虫柟姣背=10.8骞虫柟鍘樼背=0.00108骞虫柟绫,涓绫崇數缂嗛摐鐨勪綋绉細0.00108骞虫柟绫砐1绫=0.00108绔嬫柟绫,涓绫崇數缂嗛摐鐨勯噸閲忥細锛8.9X1000Kg/绔嬫柟绫筹級X0.00108绔...
绛旓細鐢变簬240mm²閾滆姱鐢电紗鐨勭洿娴佺數闃诲緢灏忥紝180绫崇殑闀垮害涓嶄細瀵艰嚧瓒呮爣鐨勫帇闄嶆崯澶憋紝鎵浠ヤ笂杩拌绠楃殑218KW鍩烘湰鍙俊浠汇傦紙2锛夊鏋滆礋杞藉姛鐜囨槸220KW锛屽垯闇姹傜殑鐢垫祦锛220KW/(鈭3x380Vx0.8)=417.8A 绋嶅井姣4x240+1x120mm²鐢电紗鐨勮浇娴侀噺锛414A锛夊ぇ鍑犲畨鍩癸紝鎸夌悊搴旈夌敤4x300+1mm²鐨勭數缂嗐
绛旓細澶ф4.29kg;涔熷彲浠ヨ嚜宸辩敤閾濈殑瀵嗗害 涔樹互 鐢电紗瀵间綋鐨勬埅闈㈢Н 涔樹互 鐢电紗闀垮害锛屾潵浼扮畻涓涓嬬數缂嗙殑閲嶉噺銆傛湁甯姪锛屽彲閲囩撼銆傛湁鐤戦棶锛屽彲杩介棶銆
绛旓細KW)鐢靛姛鐜囥4x240鐢佃鍏4璺數瑙堬紝姣忚矾鐢佃鍔熺巼240鍗冪摝锛屾昏960鍗冪摝锛1x120鐢佃鍙湁1璺數瑙堬紝鐢佃鍔熺巼120鍗冪摝锛屾昏120鍗冪摝銆傚姞璧锋潵绛変簬涓鍏1080鍗冪摝銆傛牴鎹瀹氾紝涓鍙扮數瑙堝彲甯︾殑鏈澶х數鍔熺巼鎬诲拰鏄24000鍗冪摝锛屾墍浠4x240鍗1x120鐨勭數瑙堣兘甯︾殑鏈澶х數鍔熺巼鎬诲拰鏈澶氫负24000鍗冪摝(KW)銆
绛旓細"x"鍓嶇殑鏁板瓧鏄姱鏁帮紝"x"鍚庣殑鏁板瓧鏄瘡涓鑺殑鐨勬埅闈㈤潰绉紝鍗曚綅mm²,鎵杩版槸5鑺數缂嗭紝鍏朵腑4鑺瘡鑺埅闈负240锛岀5鑺埅闈120銆
绛旓細閾滆姱鐢电紗4x240+1x120鑳芥壙鍙215鍗冪摝銆傛煡銆婄數姘斿伐绋嬨嬪父鐢ㄦ暟鎹熸煡鎵嬪唽鐭240骞虫柟姣背閾滆姱鐢电嚎鑳芥壙鍙436鐢垫祦锛堥粡鎬ф蹈娓嶇焊鐢电紗鏈夐挗閾犳姢濂楋紝绌烘皵涓暦璁撅級锛屾垨 380A鐢垫祦锛堣仛姘箼鐑粷缂樼數缂嗘棤閽㈤摖鎶ゅ锛屽煁鍦版暦璁撅級銆傚洜姝よ礋鑽峰姛鐜囧彲濡備笅璁＄畻锛歅=1.732UIcos蠁=1.732x0.38x436x0.75=215KW銆傝繖閲岀敤鏍囧噯涓夌浉...
绛旓細4x2401x120閾濈數缂嗗彲浠ュ甫澶氬皯鍗冪摝鎮ㄥソ浜,4脳240+1x120鐨勯摑鑺數缂嗚兘甯168鍗冪摝鐨勮澶囨牴鎹彛璇锛4脳240+1x120骞虫柟鐨勯摑绾垮叾瀹夊叏杞芥祦閲忎负鍏舵埅闈㈢殑2.5鍊嶏紝鍗4脳240+1x120x2.5=300A銆傚洜姝わ紝鏍规嵁鍔熺巼鐨勫叕寮忥細P=1.732UIcos蠁鏈塒=1.732X0.38X300X0.85=168kW(鐢ㄤ笁鐩稿競鐢佃绠楋紝鍔熺巼鍥犳暟鍙0.85)銆...
绛旓細鐢电紗鐨勬潗璐ㄦ湁閾滆姱鍜岄摑鑺箣鍒嗭紝涓嶅悓鏉愯川鐨勭數缂嗚浇娴侀噺宸紓寰堝ぇ銆傜數缂嗚浇娴侀噺鍙椾娇鐢ㄧ幆澧冩俯搴︺佹暦璁炬柟寮忕殑褰卞搷銆傜數缂嗙殑闀跨煭涔熸槸鐢电紗閫夊瀷鏃剁數鍘嬫崯鍧忚鑰冭檻鐨勩4x240鍗1x120閾滆姱鐢电紗瀹夊叏杞芥祦閲忕害450A~500A锛岀數缂嗚窛绂诲緢鐭殑鎯呭喌涓嬶紝鏈澶у彲甯200~220kw璐熻嵎锛堝疄闄呭甫璐熻嵎鑳藉姏瑕佷緷鐓т互涓婅姹傝繘琛屾牎楠岋級銆
绛旓細2000绫炽傛牴鎹煡璇㈢浉鍏冲叕寮娑堟伅鏄剧ず锛4*240閾濈數缂嗭細鍥芥爣鐩村緞涓4X240骞虫柟姣背鐨勯摑鑺數缂嗭紝涓鑸负2000绫炽4x240骞虫柟鐨勭數缂嗚〃绀4鑺紝姣忚姱鎴潰涓240骞虫柟姣背锛屽綋鐢电紗鎴潰涓50骞虫柟姣背鏃讹紝绠楀緱杞芥祦閲忎负300瀹夛紝浠4鑺嚦浜庤缁嗙殑鐢电紗鍨嬪彿锛屾煡杩囨潵鏄疺V4*240+1*120锛屼笌瀹冪殑鍨嬪彿鐩稿叧銆
