十五千瓦电动机用多大的电阻降压启动 15千瓦电动机配多大自藕减压启动变压器45千瓦电动机
15\u5343\u74e6\u7535\u52a8\u673a\u661f\u4e09\u89d2\u964d\u538b\u542f\u52a8\u8fd0\u884c\u7535\u6d41\u662f\u591a\u5c11\u914d\u591a\u5927\u5bfc\u7ebf15\u5343\u74e6\u7535\u52a8\u673a\u7684\u989d\u5b9a\u7535\u6d41\u7ea630A\u9644\u8fd1\uff0c\u6b63\u5e38\u8fd0\u884c\u65f6\u7684\u7535\u6d41\u226430A\uff1b\u76f4\u63a5\u542f\u52a8\u65f6\u7684\u7535\u6d41\u662f\u989d\u5b9a\u7535\u6d41\u76844\uff5e7\u500d\uff0c\u661f\u964d\u538b\u542f\u52a8\u662f\u76f4\u63a5\u542f\u52a8\u7535\u6d41\u76841/3\uff1b\u914d\u7ebf\u5e94\u8003\u8651\u7565\u5927\u4e8e\u989d\u5b9a\u7535\u6d41\u7684\u5bfc\u7ebf\uff0c\u5c0f\u622a\u9762\u94dc\u82af\u5bfc\u7ebf\u6bcf\u5e73\u65b9\u5b89\u5168\u8f7d\u6d41\u91cf\u7ea65\uff5e6A\u9644\u8fd1\uff0c\u7ebf\u8def\u4e0d\u8fc7\u957f\u65f6\u5e94\u75286\u5e73\u65b9\u94dc\u7535\u7ebf\u53ef\u4ee5\u8d1f\u8f7d\u3002
\u9996\u5148\u8981\u77e5\u9053\u7535\u673a\u7684\u542f\u52a8\u7535\u6d41\u3002\u5047\u8bbe\u8be5\u7535\u673a\u7684\u542f\u52a8\u7cfb\u6570\u4e3a6\uff0c\u989d\u5b9a\u7535\u538b\u4e3a380V\uff0c\u529f\u7387\u56e0\u6570cos\u03c6=0.85\uff0c\u6548\u7387\u4e3a0.98\u3002\u5219\u76f4\u63a5\u542f\u52a8\u7535\u6d41=P\u00f7\u221a3\u00f7un\u00f7cos\u03c6\u00f7\u03b7\u00d76=160\u00f7\u221a3\u00f70.38\u00f70.85\u00f70.98\u00d76=1751A\u3002
\u91c7\u7528\u81ea\u8026\u964d\u538b\u542f\u52a8\uff0c\u4e00\u822c\u81ea\u8026\u53d8\u538b\u5668\u526f\u8fb9\u6709\u591a\u7ec4\u62bd\u5934\uff0c\u7535\u538b\u5206\u522b\u4e3a\u539f\u8fb9\u768480%\u300160%\u300140%\uff08\u5206\u522b\u4e3a\u63a5\u7ebf\u7cfb\u6570K=0.8\u30010.6\u548c0.4\uff09\u7b49\u3002\u5982\u679c\u9009\u752860%\u7684\u62bd\u5934\uff0c\u5219\u964d\u538b\u542f\u52a8\u7535\u6d41=K²\u00d71751=0.6²\u00d71751=0.36\u00d71751=630A=0.63KA
十五千瓦的三相异步电动机内阻很小
接地电阻0.4兆欧以上就可以
绛旓細涓鑸鐢垫満鐢浜ゆ祦鎺ヨЕ鍣ㄨЕ鐐圭數娴佷竴鑸负棰濆畾鐢垫祦1.25鍊;15kw鐢垫満棰濆畾鐢垫祦30A,30*1.25=37.5A;鍙互閫夌敤40A浜ゆ祦鎺ヨЕ鍣,浠呬緵鍙傝冦 12 宸茶禐杩 宸茶俯杩< 浣犲杩欎釜鍥炵瓟鐨勮瘎浠锋槸? 璇勮 鍒嗕韩 鏂版氮寰崥 QQ绌洪棿 涓炬姤 鏀惰捣 sdwfcjch 鎺ㄨ崘浜2017-12-15 sdwfcjch 閲囩撼鏁:133 鑾疯禐鏁:611 LV7 鎿呴暱:宸ョ▼鎶鏈瀛 ...
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绛旓細鍔熺巼鍗佷簲鍗冪摝锛屾帴鍦ㄤ笁鐧惧叓鍗佷紡鐨勭數婧愪笂杩愯鐨勪笁鐩稿紓姝鐢靛姩鏈锛屾弧杞借繍琛岀數娴佹槸浜屽崄涔濆畨宸﹀彸锛岀┖杞界洿鎺ュ惎鍔紝鐬棿鐢垫祦鍦ㄤ竴鐧惧畨鎴栦互涓娿傛弧杞界洿鎺ュ惎鍔紝鍚姩鐢垫祦鏈楂樺彲杈句簩鐧惧畨宸﹀彸锛岄渶瑕佸甫杞藉惎鍔紝寤鸿閰嶅闄嶅帇鍚姩鍣紝涔熷彲浠ョ畝鍗曢厤涓槦鍨/涓夎寮鍏筹紝鎶婄數鍔ㄦ満鏀规垚 鏄熷瀷杞笁瑙掑惎鍔ㄣ
绛旓細15鍗冪摝鐢垫満鍗曠浉鐢垫祦闇瑕佹牴鎹瀹氱數鍘嬫潵璁＄畻锛屽洜涓哄崟鐩哥數娴佷笌鐢靛帇鎴愭姣斻傞氬父锛15鍗冪摝鐢垫満鐨棰濆畾鐢靛帇涓380浼忔垨220浼忥紝鍥犳璁＄畻鍏紡濡備笅锛氬湪380浼忕殑鎯呭喌涓嬶紝鍗曠浉鐢垫祦 = 15000 / (380 脳 鈭3) 鈮 27.2瀹夊煿銆傚湪220浼忕殑鎯呭喌涓嬶紝鍗曠浉鐢垫祦 = 15000 / (220 脳 鈭3) 鈮 45.7瀹夊煿銆傞渶瑕佹敞鎰忕殑鏄紝鍗曠浉...
绛旓細600鍒700宸﹀彸
绛旓細閭ｄ箞鍦ㄦ垜浠夋嫨绌哄紑鐨勬椂鍊欙紝搴斿綋鐨勯鐣欏嚭涓瀹氱殑浣欓噺锛屼互澶囨垜浠悗闈㈠甫鎺ュ叆璁惧锛屽氨涓嶉渶瑕佸啀鎹㈢┖寮浜嗐傚笇鏈涙垜鐨勫洖绛旇兘澶熷府鍔╁埌浣狅紒銆愭憳瑕併15鍗冪摝鐢ㄥ澶х殑绌哄紑銆愭彁闂戝緢楂樺叴鑳藉鍥炵瓟鎮ㄧ殑闂銆鍗佷簲鍗冪摝鐨勫姛鐜囩數娴佸ぇ姒傚湪30A宸﹀彸锛岄偅涔堢┖寮閫32A鐨勮矊浼肩湅鐫灏卞浜嗭紝鍏跺疄涓嶇劧锛屽鏋滅◢寰◢寰竴瓒呰礋鑽凤紝閭ｄ箞灏变細...
绛旓細i=u/r p=u*u/r=i*i*r
绛旓細15kw鐢靛姩鏈鐢垫祦璁＄畻锛歅=鈭3脳U脳I脳cos鈭甀 =P梅锛堚垰3脳U脳cos鈭級=15梅锛堚垰3脳0.38脳0.85锛=27锛圓锛夋牴鎹數娴佸鐓ц〃锛15KW鐢垫満鑷冲皯瑕侀夋嫨6骞虫柟鐨勯摐鑺數绾裤6骞虫柟鐨勯摐鑺數绾挎槑绾挎暦璁惧畨鍏ㄦ埅娴侀噺绾50A銆傚弬鑰冪數绾挎埅娴侀噺瀵圭収琛細
