4千瓦的电动机,额定电流8.8A,请问线的粗细如何算 有一个4kW电机，额定电流大概是8.8A，电机离控制柜大概7...
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\u4e00\u53f0\u989d\u5b9a\u529f\u5f8b\u4e3a4KW\uff0c\u989d\u5b9a\u7535\u6d41\u4e3a8.8A\uff0c\u9009\u752822A\u5373\u53ef\u3002
2.5\u5e73\u65b9\u94dc\u82af\u7535\u7ebf\u8db3\u53ef\u4ee5\u5b89\u5168\u8d1f\u8f7d\u3002
\u94dc\u7535\u7ebf\u7684\u7535\u963b\u7387\uff1a\u03c1\uff1d0.0172
\u6bcf\u6839\u7535\u7ebf\u7684\u7535\u963b\uff1a
R\uff1d\u03c1\u00d7L/S\uff1d0.0172\u00d770/2.5\u22480.48(\u03a9)
\u7ebf\u8def\u672b\u7aef\u4ea7\u751f\u7684\u7535\u538b\u964d(\u5355\u7ebf)\uff1a
U\uff1dRI\uff1d0.48\u00d78.8\u22484(V)
\u7ebf\u4e0e\u7ebf\u7684\u7535\u538b\u964d\uff1a
U\uff1d4\u00d72\uff1d8(V)
\u7535\u538b\u964d\u4e3a\u989d\u5b9a\u7535\u538b(380V)\u76842%\uff0c\u7535\u673a\u53ef\u5b89\u5168\u8fd0\u884c\u3002
2.5平方的铜芯电缆.
2.0 比较保险
绛旓細鍥犲惎鍔鐢垫祦寰堝ぇ锛屽彂鐢垫満甯﹀姩鐢靛姩鏈虹殑鐡堕涓昏鏄湪鍚姩杩囩▼锛岀數鍔ㄦ満杩涘叆棰濆畾杞熷悗鐢垫祦闄嶄綆灏卞畨鍏ㄤ簡銆15KW鍙戠數鏈洪┍鍔4KW鐢靛姩鏈搴旇娌℃湁浠涔堥棶棰橈紝娉ㄦ剰璁╃數鍔ㄦ満鏃犳牻鎴栬交杞界姸鎬佷笅鍚姩銆
绛旓細绛旓細4鍗冪摝4鏋鐢垫満鐨勯瀹氱數娴涓8.8A锛屽鏋滅洿鎺ュ惎鍔ㄦ椂锛屽惎鍔ㄧ數娴佹槸棰濆畾鐢垫祦鐨4锝7鍊嶏紝鍥犱负绌鸿浇鍚姩锛屾墍浠ュ惎鍔ㄧ數娴佹寜鏈浣4鍊嶈绠椾负35.2A銆傛墍浠ヤ綘鐪嬪埌鍚姩鐢垫祦鐬棿涓32A锛屾槸瀵圭殑銆傛甯哥殑銆傞殢鐫鐢垫満杞熺殑鍗囬珮锛屽叾鐢垫祦浼氬緢蹇殑鍥炶惤鍒扮數鏈虹殑棰濆畾鍊间互涓涓嬶紝绌鸿浇杩愯鏃剁數娴佸簲璇ヤ负3锝4A宸﹀彸銆
绛旓細Y112M-4鐢垫満鍔熺巼4KW,棰濆畾鐢垫祦8.8A, 鐢垫祦8.5 杩欐牱鐨勭數鏈鑳界敤.
绛旓細锛屽弬鐓ф瘡骞虫柟鐢电紗鐨勫畨鍏ㄨ浇娴侀噺锛屽嵆鍙绠楋紝姣斿380V锛4鍗冪摝鐨勭數鏈猴紝鏌ヨ〃寰楃煡锛4KW鐢垫満棰濆畾鐢垫祦涓8.8A,鍙傝2.5骞虫柟鐢电紗瀹夊叏杞芥祦鍩嬪湴鏁疯涓22A,鑰冭檻灏忕嚎寰勭數缂嗘暦璁炬椂鐨勯暱搴︺佸惎鍔ㄦ椂鐨勭數娴併佸啀鑰冭檻甯冪嚎鐨勬満姊板己搴︼紝鍜岀數鏈烘湁鐭椂杩囪浇鐨勫彲鑳斤紝鎵浠4KW鐢垫満蹇呴』寰楅3X2.5+1X1.5骞虫柟鐨勭數缂嗙嚎銆
绛旓細涓112M涓4涓夌浉寮傛鐢靛姩鏈棰濆畾鍔熺巼4KW锛岄瀹氱數娴8.8A锛屼笉灏忎簬1骞虫柟閾滅嚎渚涚數灏辫锛屽缓璁敤RVV4脳1.5鎶m²濂楃嚎锛堟垨BV1.5mm²閾滅嚎锛
绛旓細4KW涔樹互24灏忔椂鍐嶄箻浠90澶╃瓑浜8640鍗冪摝/鏃
绛旓細8.8A鐨勭數鏈绛変簬澶氬皯KW,浣犳病鏈夎鏄庢槸涓夌浉杩樻槸鍗曠浉鐨勶紝涓夌浉绾4KW宸﹀彸锛孾P=1.73UIX0.85]鍗曠浉鐨勭害1.5KW---2KW,P=0.85UI
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绛旓細姝ｅ父鐨勮瘽鐪鐢垫満鐨勯摥鐗岋紝濡傛灉浼扮畻1KW鏄2A锛4kw涔熷氨鏄8A锛岀┖杞界數娴佷负棰濆畾鐢垫祦锛堥摥鐗屼笂鐨勭數娴侊級鐨40%宸﹀彸锛屼及绠楃殑璇濇槸3.2A宸﹀彸
绛旓細涓夌浉4鍗冪摝4鏋鐢垫満棰濆畾鐢垫祦8瀹夈
