75千瓦电机用多大电缆 75KW电机需要多大电缆
100\u5343\u74e6\u8d1f\u8377\u7528\u591a\u5927\u7535\u7f06\u9700\u898125\u5e73\u65b9\u7684\u7535\u7f06\u7ebf\u3002
\uff081\uff09\u8ba1\u7b97\u65b9\u6cd5\uff1a
\u6839\u636e\u4e09\u76f8\u7535\u76f8\u7ebf\u7535\u6d41\u8ba1\u7b97\u516c\u5f0f I=P\u00f7(U\u00d71.732\u00d7cos\u03a6)
P-\u529f\u7387(W);U-\u7535\u538b(380V);cos\u03a6-\u529f\u7387\u56e0\u7d20(0.85);I-\u76f8\u7ebf\u7535\u6d41(A)
\u5e26\u5165\u6570\u636eP=100kw\uff0cU=380V \uff1b
\u8ba1\u7b97\u5f97\uff0c\u76f8\u7ebf\u7535\u6d41I=178A
\uff082\uff09\u5728\u4e09\u76f8\u5e73\u8861\u7535\u8def\uff0c\u4e00\u822c\u94dc\u5bfc\u7ebf\u7684\u5b89\u5168\u8f7d\u6d41\u91cf\u4e3a5~8A/mm^2\u3002
178\u00f78=22.25mm^2\uff0c\u7535\u7f06\u6700\u8fd1\u7684\u89c4\u683c\u4e3a25mm^2
\u6269\u5c55\u8d44\u6599\uff1a
\u7535\u7f06\u7ebf\u9009\u8d2d\u8981\u70b9
1\u3001\u770b\u5305\u88c5\uff0c\u56fd\u6807\u7684\u7535\u7ebf\u5f80\u5f80\u505a\u90fd\u6bd4\u8f83\u597d\uff0c\u6574\u9f50\uff0c\u624b\u62ff\u4e0a\u53bb\u6709\u8d28\u91cf\u611f\u3002
2\u3001\u6253\u5f00\u5305\u88c5\u770b\u4e00\u4e0b\u91cc\u9762\u7684\u7535\u7ebf\uff0c\u56fd\u6807\u7684\u7535\u7ebf1.5---6\u5e73\u65b9\u7684\u7535\u7ebf\u8981\u6c42\u662f\u76ae\u539a\uff08\u7edd\u7f18\u539a\u5ea6\uff090.7mm\uff0c\u592a\u539a\u7684\u5c31\u662f\u975e\u6807\u7684\uff0c\u76f8\u5e94\u7684\u5b83\u7684\u5185\u82af\u5c31\u4e0d\u591f\uff0c\u7ebf\u76ae\u53ef\u4ee5\u7528\u529b\u7684\u626f\u4e00\u4e0b\uff0c\u4e0d\u5bb9\u6613\u626f\u7834\u7684\u4e00\u822c\u5c31\u662f\u56fd\u6807\u7684\u3002
3\u3001\u7528\u706b\u70e7\u4e00\u4e0b\uff0c\u79bb\u5f00\u540e5s\u5185\u7184\u706d\u7684\uff0c\u6709\u4e00\u5b9a\u963b\u71c3\u529f\u80fd\u7684\u4e3a\u56fd\u6807\u7ebf\u3002
4\u3001\u770b\u5185\u82af\uff0c\u5185\u82af\u7684\u6750\u8d28\uff08\u94dc\u8d28\uff09\u5149\u4eae\u5ea6\u8d8a\u9ad8\u94dc\u8d28\u8d8a\u597d\uff0c\u5e76\u4e14\u5149\u5ea6\u5300\uff0c\u6709\u5149\u6cfd\uff0c\u6ca1\u6709\u5c42\u6b21\u611f\u3002\u56fd\u6807\u8981\u6c42\u5185\u82af\u4e00\u5b9a\u8981\u7528\u65e0\u6c27\u94dc\u3002\u975e\u6807\u7684\u5982\u9ed1\u6746\u94dc\uff0c\u53ef\u80fd\u5b58\u5728\u4e8b\u6545\u9690\u60a3\u3002
5\u3001\u56fd\u5bb6\u89c4\u5b9a\u7535\u7ebf\u4e0a\u4e00\u5b9a\u8981\u6253\u6709\u4e00\u5b9a\u7684\u6807\u8bc6\uff0c\u6700\u5927\u4e0d\u4f1a\u8d85\u8fc7500mm\u90fd\u4f1a\u6709\u76f8\u540c\u7684\u6807\u8bc6\u6253\u51fa\u6765\uff0c\u4e0a\u9762\u4e00\u822c\u6709\u4ea7\u54c1\u7684\u5546\u6807\uff0c\u5382\u5bb6\u540d\u79f0\uff0c\u6267\u884c\u6807\u51c6\u7b49\u3002
\u53c2\u8003\u8d44\u6599\uff1a
\u767e\u5ea6\u767e\u79d1-\u7535\u7f06\u7ebf
\u5de5\u5730\u7535\u5de5\u8bf475KW\u7535\u673a\u752850\u5e73\u65b9\u7535\u7f06\uff0c\u591a\u4e8f\u8bf7\u6559\u4e86\u8001\u7535\u5de5\uff0c\u5dee\u70b9\u5c31\u9009\u9519\u4e86
380V 1KW=2A
75X2=150A
VJY 22 70平方
四芯铜芯电缆载流量220A
220-220X20%=176A
电缆留有20%余量。
50平方以上电缆
绛旓細涓夌浉鐢垫満鐢垫祦璁＄畻锛氬姛鐜囧洜鏁颁互0.85璁＄畻銆傚姛鐜嚸风數鍘嬅锋牴鍙3梅鍔熺巼鍥犳暟锛75KW梅380梅1.732梅0.85=134A銆傛牴鎹鐢电紗瀵圭収琛紝鐢电紗寤鸿閫夋嫨70骞虫柟鐨勩
绛旓細鐢靛姩鏈75鍗冪摝鐢垫祦绾150A闇70骞虫柟閾滃绾匡紝鎴栬呬娇鐢95骞虫柟姣背浠ヤ笂鐨勯摑璐鐢电紗锛岀數鍔ㄦ満瀹夊叏杞芥祦閲忕害161A锛岀數鐑澶75鍗冪摝鐢垫祦闇50骞虫柟閾滃绾垮畨鍏ㄨ浇娴侀噺绾126A锛75鍗冪摝鐢电儹璁惧姣忕浉25鍗冪摝锛屾瘡鐩哥數娴25*4.5=112.5A銆5鍗冪摝鐢ㄧ數璁惧锛屼笉绠℃槸鐢靛姩鏈鸿繕鏄數鐑澶囷紝閮借涓夌浉鐢垫簮渚涚數锛屽鏋滅數鍔ㄦ満涓庣數鐑澶囨贩鐢紝...
绛旓細75鍗冪摝鐢靛姩鏈璺濈15绫宠鐢70mm²鐨勯摑鐢电紗锛50mm²鐨勯摐鐢电紗銆傜敱涓夌浉鐢垫満鍏紡寰楋細P=1.732UIcos桅 鎵浠ュ姛鐜75kw鐨勯瀹氱數娴両=P/1.732Ucos桅=75/1.732/0.38/0.8=75/0.53=141.5A锛宑os桅涓0.8銆傜數鍘嬩负380V銆傛牴鎹數娴141.5A锛屾煡鐢电紗鎵嬪唽YJV鐭ワ紝闇瑕佺敤70mm²鐨勯摑鐢电紗锛50mm&...
绛旓細AVVR 鑱氭隘涔欑儻鎶ゅ瀹夎鐢ㄨ蒋鐢电紗銆係BVV HYA 鏁版嵁閫氫俊鐢电紗锛堝鍐呫佸锛夌敤浜庣數璇濋氫俊鍙婃棤绾跨數璁惧鐨勮繛鎺ヤ互鍙婄數璇濋厤绾跨綉鐨勫垎绾跨洅鎺ョ嚎鐢ㄣ俁V銆丷VP 鑱氭隘涔欑儻缁濈紭鐢电紗銆侭V銆丅VR 鑱氭隘涔欑儻缁濈紭鐢电紗鐢ㄩ旓細閫傜敤浜庣數鍣ㄤ华琛ㄨ澶囧強鍔ㄥ姏鐓ф槑鍥哄畾甯冪嚎鐢ㄣ俁IB 闊崇杩炴帴绾匡紙鍙戠儳绾匡級銆侹VV 鑱氭隘涔欑儻缁濈紭鎺у埗鐢电紗鐢ㄩ旓細鐢靛櫒銆佷华琛...
绛旓細75鍗冪摝涓夌浉鐢靛姩鏈30鍙伴渶瑕380v鐢70骞虫柟鑰勭背鐨勯摑绾鐢电紗銆380V鐢靛帇姣忓崈鐡﹀姛鐜囬瀹氱數娴佹寜2A璁＄畻銆75x2A=150A銆傚弬鑰冪數缂嗙殑浣跨敤鎵嬪唽锛屽搴旂殑閾濈嚎鐢电紗鏄70骞虫柟姣背瀵瑰簲鐨勯摐鑺數缂嗘槸50骞虫柟姣背銆
绛旓細缁欎綘涓寮犲浘鍙傝冧竴涓嬶紝閫変粈涔堣鏍间竴鐪嬪氨鏄庣櫧銆傦經锛4X16+1X10鐨勯摐鑺鐢电紗锛夋垜鐪嬪お灏忎簡銆傦綕 寤鸿浣跨敤70骞虫柟鍥涜姱鐢电紗銆
绛旓細380V銆75kW鐨鐢垫満鍙傝冪數娴150A锛屽垯鐜板湪鐢电紗锛歏V 0.6/1kV 3X70+1X35 閾滆姱鑱氭隘涔欑儻缁濈紭鑱氭隘涔欑儻鎶ゅ鐢靛姏鐢电紗锛屾垨 VLV 0.6/1kV 3X90+1X35 閾濊姱鑱氭隘涔欑儻缁濈紭鑱氭隘涔欑儻鎶ゅ鐢靛姏鐢电紗 鎴栬咃細YJV 0.6/1kV 3X50+1X25 閾滆姱浜よ仈鑱氫箼鐑粷缂樿仛姘箼鐑姢濂楃數鍔涚數缂嗭紝鎴 YJLV 0.6/1kV 3X70+1X...
绛旓細50~100A鐢垫祦1骞虫柟姣背鐨勫畨鍏ㄨ浇娴侀噺鏄5A,100A鐢垫祦浠ヤ笂涓鑸彇1骞虫柟姣背鐨勫畨鍏ㄨ浇娴侀噺鏄2.5A 鎸夌収涓夌浉浜ゆ祦鐢靛叕寮:P=1.732*U*I*cos蠁,cos蠁鏄姛鐜囧洜鏁,閫0.8,閭ｄ箞: I=75K/(1.732*380*0.8)=142A,閾滅嚎绾垮緞:142/2.5=56.8,鏁呴50鎴70骞虫柟姣背鐨勯摐鐢电紗銆
绛旓細鏄笁鐩380浼忔湁鐢垫満鐨勭數璺紝閭ｄ箞鐢垫祦绛変簬75000梅380梅1.732梅0.8=143A銆傛煡琛ㄦ灦绌虹嚎闇瑕35骞虫柟閾滅嚎锛屽绌跨銆佸湴鍩嬬瓑闇瑕佷笂涓涓。娆°
绛旓細1銆佹眰75KW鐢垫満鐨勯瀹氱數娴侊紙浠ヤ笁鐩380V锛屽姛鐜囧洜鏁颁负0.8涓轰緥锛塈e Ie=75KW/锛堟牴鍙3x380Vx0.8锛=142A 2銆佹牴鎹甀e锛屾煡琛ㄦ眰鐢电紗鎴潰绉紙浠ヤ笁鑺摐鐢电紗锛岀┖姘斾腑鏁疯涓轰緥锛夌粡鏌 3x70mm²鐢电紗 鐨勫畨鍏ㄨ浇娴侀噺鏄145A>Ie銆3銆侀獙绠50绫筹紝3x70mm²鐢电紗鐨勫帇闄嶆槸鍚﹁揪鏍 缁忔煡3x70mm²鐢电紗 鐨...
