45kw电机用星三角起动多大电缆 45千瓦的电动机采用星三角起动用多少平方的六根出线
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\u8ba1\u7b97\u7535\u6d41\uff1aIjs=P/U/\u221a3/cos\u03c6=45000/380/1.732/0.85\u224880.4A\uff1b
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1\u300145KW\u7535\u673a\u7ea690A\u7535\u6d41\uff0c\u94dc\u82af\u7535\u7f06\u9009\u62e935\u5e73\u65b9\u6216\u4ee5\u4e0a\u4e3a\u4f73\u3002\u5982\u679c\u8ddd\u79bb\u8d85\u8fc7400m\uff0c\u7531\u4e8e\u538b\u964d\u8d85\u8fc719V\u5c31\u52a0\u5927\u7535\u7f06\u7ebf\u5f84\u3002
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50米内用70平方，100米内用95平方
绛旓細45鍗冪摝鐨勭數鍔ㄦ満鐢ㄦ槦涓夎鍚姩锛绌鸿浇鍚姩鐢垫祦鏄60瀹夊乏鍙筹紝甯﹁礋鑽峰惎鍔ㄧ數娴120瀹夊乏鍙銆
绛旓細鈪=45/0.38*鈭3*coS(0.755)=90.5A 鏄熶笁瑙掑惎鍔ㄦ椂锛屽洜涓虹浉U=绾縐/鈭3=220v 鐩哥數娴=绾跨數娴=90.5/鈭3=52.25A
绛旓細鍥句笂鐨勬病閿欙紝杩愯鐢垫祦绾90A宸﹀彸锛屽紑鍏虫渶濂介夊痉鍔涜タCDM1-225鍨 125A 锛屾帴瑙﹀櫒 鐑户灏辨寜鍥句笂 涓や釜65A鍙婁竴涓50A鎺ヨЕ鍣 灏忕殑鍋氭槦鐐癸紝鐑户37-50A.CDC6杩欎釜绯诲垪璐ㄩ噺杩樻槸涓嶉敊鐨勶紝鍙笉鏄疌J20/CJX2绯诲垪鑳芥瘮鐨勩傛斁蹇冪敤鍚
绛旓細45KW鐨勯瀹氱數娴佸ぇ绾90A宸﹀彸锛屾槦涓夎鍚姩鐨勮瘽锛2涓鎺ヨЕ鍣ㄧ殑鐢垫祦澶х害鏄笁鍒嗕箣浜屽乏鍙冲嵆90*0.7=63A 16骞虫柟鐨勭數绾垮ぇ绾﹁兘鎵垮彈75鐢垫祦銆傚彲浠ョ敤銆傞暱鏃堕棿浣跨敤涓嶅樊閽辨渶濂芥槸25骞虫柟銆
绛旓細45kw鐢靛姩鏈杩愯鐢垫祦90瀹夊乏鍙筹紝120瀹夌殑浜ゆ祦鎺ヨЕ鍣紝鍔犱竴涓數鍔ㄦ満缁煎悎淇濇姢鍣紝绌哄紑鐢150瀹夌殑锛3*35+1閾滆姱鐢电紗
绛旓細瀹屽叏鍙互 45Kw鐢垫満閲囩敤鏄熶笁瑙掑惎鍔锛屽惎鍔ㄧ數娴佺害涓180A锛岃交璐熻嵎鍚姩鐨勮瘽锛岄200A绌哄紑锛屽畬鍏ㄦ病闂
绛旓細涓夌浉浜ゆ祦380V锛45KW鐨勭數鍔ㄦ満锛閲囩敤鏄熶笁瑙闄嶅帇鍚姩鏃讹紝鐑户鐢靛櫒閫夌敤JR36-160 75-120A銆傚弬鏁拌绠楀涓嬨傞鍏堣绠楃數娴侊細I=P/(鈭3*U*cos蠁*畏)=45/(1.732*0.38*0.85*0.95)鈮85A 閫夊瀷锛氱儹缁х數鍣ㄩ夊瀷鍖呮嫭3涓柟闈紝涓鏄儹缁х數鍣ㄥ３浣撻瀹氱數娴侀夋嫨锛欼澹=I锛0.7~1锛堿=60~85A锛涗簩鏄儹缁х數鍣ㄧ儹鍏冧欢...
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