3x240+2x12o的铜电缆一米多重 4*240 1*120铜电缆 1米多重
\u7535\u7f063\u00d7240 1x120,\u4e00\u7c73\u662f\u591a\u5c11\u516c\u65a4\u4e861\u3001\u82e5\u662f\u94dc\u7535\u7f06\uff0c\u666e\u901a\u7684\uff0c\u50cf YJV
\u90a3\u4e48 3X240+1X120 \u91cc\u9762\u7eaf\u94dc\u7684\u91cd\u91cf\u662f\uff1a7.47kg \uff08\u8fd9\u662f\u6309\u56fd\u6807\u7b97\u7684\uff09\u3002
\u52a0\u4e0a\u5176\u4ed6\u7684\uff08\u7edd\u7f18\u6599\uff0c\u586b\u5145\u7ef3\uff0c\u65e0\u7eba\u5e03\uff0c\u62a4\u5957\uff09\u57281kg\u5de6\u53f3\u3002
\u6240\u4ee53X240+1X120\u5e73\u65b9 \u94dc\u7535\u7f06 \u7684\u8bdd\u6bcf\u7c73\u7684\u91cd\u91cf\u662f 8.5kg \u5de6\u53f3\u3002
2\u3001\u7535\u7ebf\u7535\u7f06
\u7535\u7ebf\u7535\u7f06\u7528\u4ee5\u4f20\u8f93\u7535\uff08\u78c1\uff09\u80fd\uff0c\u4fe1\u606f\u548c\u5b9e\u73b0\u7535\u78c1\u80fd\u8f6c\u6362\u7684\u7ebf\u6750\u4ea7\u54c1\uff0c\u5e7f\u4e49\u7684\u7535\u7ebf\u7535\u7f06\u4ea6\u7b80\u79f0\u4e3a\u7535\u7f06\uff0c\u72ed\u4e49\u7684\u7535\u7f06\u662f\u6307\u7edd\u7f18\u7535\u7f06\uff0c\u5b83\u53ef\u5b9a\u4e49\u4e3a\uff1a\u7531\u4e0b\u5217\u90e8\u5206\u7ec4\u6210\u7684\u96c6\u5408\u4f53\uff1b\u4e00\u6839\u6216\u591a\u6839\u7edd\u7f18\u7ebf\u82af\uff0c\u4ee5\u53ca\u5b83\u4eec\u5404\u81ea\u53ef\u80fd\u5177\u6709\u7684\u5305\u8986\u5c42\uff0c\u603b\u4fdd\u62a4\u5c42\u53ca\u5916\u62a4\u5c42\uff0c\u7535\u7f06\u4ea6\u53ef\u6709\u9644\u52a0\u7684\u6ca1\u6709\u7edd\u7f18\u7684\u5bfc\u4f53\u3002\u7528\u4ee5\u4f20\u8f93\u7535\uff08\u78c1\uff09\u80fd\uff0c\u4fe1\u606f\u548c\u5b9e\u73b0\u7535\u78c1\u80fd\u8f6c\u6362\u7684\u7ebf\u6750\u4ea7\u54c1\u3002
\u5e7f\u4e49\u7684\u7535\u7ebf\u7535\u7f06\u4ea6\u7b80\u79f0\u4e3a\u7535\u7f06\uff0c\u72ed\u4e49\u7684\u7535\u7f06\u662f\u6307\u7edd\u7f18\u7535\u7f06\u3002\u5b83\u53ef\u5b9a\u4e49\u4e3a\uff0c\u7531\u4e0b\u5217\u90e8\u5206\u7ec4\u6210\u7684\u96c6\u5408\u4f53\uff1a\u4e00\u6839\u6216\u591a\u6839\u7edd\u7f18\u7ebf\u82af\uff0c\u4ee5\u53ca\u5b83\u4eec\u5404\u81ea\u53ef\u80fd\u5177\u6709\u7684\u5305\u8986\u5c42\uff0c\u603b\u4fdd\u62a4\u5c42\u53ca\u5916\u62a4\u5c42\uff0c\u7535\u7f06\u4ea6\u53ef\u6709\u9644\u52a0\u7684\u6ca1\u6709\u7edd\u7f18\u7684\u5bfc\u4f53\u3002
\u94dc\u7684\u5bc6\u5ea6\u4e3a 8.9g/cm³\uff0c\u4e0d\u7b97\u5916\u76ae\u62a4\u5957\u7684\u91cd\u91cf\uff0c\u5219\u94dc\u5bfc\u4f53\u622a\u9762\u79ef4*240+1*120=1080mm²=10.8cm²\u91cd\u91cf\u4e3a\uff1a8.9*100*10.8 =9612 g=9.612 kg\uff0c\u5927\u698210\u516c\u65a4\u5de6\u53f3\u3002
\u5bc6\u5ea6\u662f\u7269\u8d28\u7684\u4e00\u79cd\u7279\u6027\uff0c\u7269\u7406\u4e0a\u628a\u67d0\u79cd\u7269\u8d28\u5355\u4f4d\u4f53\u79ef\u7684\u8d28\u91cf\u53eb\u505a\u8fd9\u79cd\u7269\u8d28\u7684\u5bc6\u5ea6\u3002\u7b26\u53f7\u03c1\uff08\u8bfb\u4f5cr\u014du\uff09\u3002
\u7528\u6c34\u4e3e\u4f8b\uff0c\u6c34\u7684\u5bc6\u5ea6\u57284\u2103\u65f6\u4e3a10^3\u5343\u514b/\u7c73^3\u62161\u514b/\u7acb\u65b9\u5398\u7c73\uff081.0\u00d710^3kg/m^3\uff0c\uff09\u7269\u7406\u610f\u4e49\u662f\uff1a\u6bcf\u7acb\u65b9\u7c73\u7684\u6c34\u7684\u8d28\u91cf\u662f1000\u5343\u514b\uff0c\u5bc6\u5ea6\u901a\u5e38\u7528\u201c\u03c1\u201d\u8868\u793a\u3002
\u5bc6\u5ea6\u662f\u53cd\u6620\u7269\u8d28\u7279\u6027\u7684\u7269\u7406\u91cf\uff0c\u7269\u8d28\u7684\u7279\u6027\u662f\u6307\u7269\u8d28\u672c\u8eab\u5177\u6709\u7684\u800c\u53c8\u80fd\u76f8\u4e92\u533a\u522b\u7684\u4e00\u79cd\u6027\u8d28\uff0c\u4eba\u4eec\u5f80\u5f80\u611f\u89c9\u5bc6\u5ea6\u5927\u7684\u7269\u8d28\u201c\u91cd\u201d\uff0c\u5bc6\u5ea6\u5c0f\u7684\u7269\u8d28\u201c\u8f7b\u201d\u4e00\u4e9b\uff0c\u8fd9\u91cc\u7684\u201c\u91cd\u201d\u548c\u201c\u8f7b\u201d\u5b9e\u8d28\u4e0a\u6307\u7684\u662f\u5bc6\u5ea6\u7684\u5927\u5c0f\u3002
\u8d28\u91cf\u662f\u7269\u4f53\u6240\u542b\u7269\u8d28\u7684\u591a\u5c11\u3002\u6240\u542b\u7269\u8d28\u51cf\u5c11\uff0c\u6240\u4ee5\u8d28\u91cf\u51cf\u5c11\u3002\u5bc6\u5ea6\u662f\u7269\u8d28\u7684\u4e00\u79cd\u7279\u6027\uff0c\u5b83\u4e0d\u968f\u8d28\u91cf\u3001\u4f53\u79ef\u7684\u6539\u53d8\u800c\u6539\u53d8\uff0c\u540c\u79cd\u7269\u8d28\u7684\u5bc6\u5ea6\u4e0d\u53d8\uff0c\u5b83\u53ea\u4e0e\u7269\u8d28\u7684\u79cd\u7c7b\u548c\u7269\u8d28\u7684\u72b6\u6001\u6709\u5173\uff0c\u4e0d\u540c\u7684\u7269\u8d28\uff0c\u5bc6\u5ea6\u4e00\u822c\u662f\u4e0d\u76f8\u540c\u7684\uff0c\u540c\u79cd\u7269\u8d28\u7684\u5bc6\u5ea6\u5219\u662f\u76f8\u540c\u7684\u3002
YJV22 3x240+2x120 近似重量11878Kg/Km.
大概9KG左右
绛旓細YJV 3x240+2x120 杩戜技閲嶉噺10051Kg/Km锛沋JV22 3x240+2x120 杩戜技閲嶉噺11878Kg/Km.
绛旓細浠庝笂琛ㄥ彲鐭ワ紝3鈪24O+2x12O閾滅嚎鐢电紗鐨勮浇娴侀噺绾︿负400A銆傚鏋滅數缂嗗湪涓夌浉380V绯荤粺涓繍琛岋紝涓旂數缂嗗湪婊¤礋鑽蜂笅宸ヤ綔锛屽垯鍙緭閫佺殑鏈澶у姛鐜囦负锛氣垰3x380Vx400Ax0.8=210617W鈮211KW 鏈鍚庨獙绠椾竴涓嬬數缂400绫抽暱鐨勫帇闄嶏紙240mm²鐢电紗瀵间綋鐨勭洿娴佺數闃绘槸0.0754娆у/km锛夛細鍘嬮檷=锛0.0754娆у/kmx0.4km锛墄4...
绛旓細YJV22鈥斺閾鑺浣撲氦鑱旇仛涔欑儻缁濈紭鑱氭隘涔欑儻鍐呮姢濂楀弻閽㈠甫缁曞寘閾犺鑱氭隘涔欑儻澶栨姢濂楃數鍔鐢电紗 3脳240+2脳120鈥斺旀剰鎬濇槸3鏍240mm²鐩哥嚎銆1鏍120mm²涓х嚎銆1鏍120mm²榛/缁垮弻鑹蹭繚鎶ゆ帴鍦扮嚎 浣跨敤鏃讹紝姣忚姱搴旂敤鎺ョ嚎榧诲瓙鍘嬬揣锛岄挗甯︺侀粍/缁垮弻鑹蹭繚鎶ゆ帴鍦扮嚎閮藉簲鍙潬鎺ュ湴锛佸弬瑙併奊B50217-2007鐢靛姏...
绛旓細鍥炵瓟锛40脳6=12脳20=30脳8=240.4脳90=6脳60=40脳9=360.
绛旓細7銆並鍙栦綍鍊兼椂,鍏充簬X鐨勬柟绋3x-3k=5(x+k)+2鐨勮В鏄鏁?8銆3x > 2x+19銆 -2x+3 >-3x+110銆 3x-2(x+1)>011銆佸凡鐭ュ叧浜巟鐨勬柟绋3k-5x=-9鐨勮В鏄潪璐熸暟,姹俴鐨勫彇鍊艰寖鍥 12銆佹煇鍦版皵璞¤祫鏂欒〃鏄,灞变笅鐨勫钩鍧囨皵娓╀负22鎽勯傚害,浠庡北鑴氫笅璧,姣忓崌楂1000绫,姘旀俯灏变笅闄6鎽勯傚害,瑕佸湪灞变笂绉嶄竴绉嶅钩鍧囨皵娓╂槸18...
绛旓細.濡傚浘8鎵绀,A,B涓轰袱涓潙搴,AB,BC,CD涓哄叕璺,BD涓虹敯鍦,AD涓烘渤瀹,涓擟D涓嶢D浜掔浉鍨傜洿.鐜板湪瑕佷粠E澶勫紑濮嬮摵璁鹃氬線鏉戝簞A,鏉戝簞B鐨勪竴鏉鐢电紗,鍏辨湁濡備笅涓ょ閾鸿鏂规:鏂规涓:; 鏂规浜:.缁忔祴閲忓緱鍗冪背,鍗冪背,鍗冪背,鈭燘DC=45掳,鈭燗BD=15掳.宸茬煡:鍦颁笅鐢电紗鐨勪慨寤鸿垂涓2涓囧厓/鍗冪背,姘翠笅鐢电紗鐨勪慨寤鸿垂涓4涓囧厓/鍗冪背...
绛旓細8x+120-3x=240 5x+120=240 5x=120 x=24 40-x=16 绛:澶у悓瀛︽湁24浜,灏忓悓瀛︽湁16浜恒 5.瑙:璁剧敺鐢焫浜,濂崇敓(42-x)浜恒 3x-2(42-x)=56 3x+2x-84=56 5x=140 x=28 42-x=14 绛:鐢风敓28浜,濂崇敓14浜 1銆 鏉庤佸笀瑕佺敤80鍏冧拱涓浜涙枃鍏蜂綔涓哄勾绾ц繍鍔ㄤ細鐨勫鍝併備粬鍏堣姳45.6鍏冧拱浜8鏈浉鍐,骞跺噯澶囩敤...
绛旓細12+8x=52 0.8x-4.2=2.2 2x+5=10 3x-15=75 4x+4o=320 3x+77=122 5x-1.6=0.6 6x-4=20 10x-0.6=2.4 500-12x=140 1) 66x+17y=3967 25x+y=1200 绛旀:x=48 y=47 (2) 18x+23y=2303 74x-y=1998 绛旀:x=27 y=79 (3) 44x+90y=7796 44x+y=3476 绛旀:x=79 y=48 (4) 76x-66y...
绛旓細锛3/1-2x锛 =锛7/3x+1锛-3 瑙 : 3/1-2x=7/3x-2 7/17x=3/7 x=51/49 浣犲ソ锛屾湰棰樺凡瑙ｇ瓟 濡傛弧鎰忥紝璇风偣閲囩撼
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