75千瓦的电机，电压为380伏，需要用多大的电缆？ 75千瓦的电机用380伏需要用多大的电缆？
380\u4f0f800\u5343\u74e6\u7528\u591a\u5927\u7684\u7535\u7f06\u3000\u3000800\u5343\u74e6\u7684\u8bbe\u5907\u8981\u752816\u5e73\u65b9\u7684\u94dc\u7535\u7f06\u3002
\u3000\u3000\u7535\u6d41\u4e3aI=P/(1.732Ucos\u03c6)=800/(1.732x0.38x0.75)=1620A\uff08\u7528\u6807\u51c6\u4e09\u76f8\u5e02\u7535\u7535\u538b\u8ba1\u7b97\uff0ccos\u03c6\u662f\u8d1f\u8f7d\u529f\u7387\u56e0\u6570\uff0c\u4e00\u822c\u7535\u52a8\u673a\u53d60.75 \uff09\u3002
\u3000\u3000\u5982\u6b64\u5927\u7684\u7535\u6d41\uff0c\u666e\u901a\u7535\u7f06\u662f\u65e0\u6cd5\u627f\u53d7\u7684\u3002\u56e0\u6b64\u5fc5\u987b\u91c7\u7528\u9ad8\u7535\u538b\u3002\u4e0b\u9762\u4ee510kV\u7684\u7ebf\u7535\u538b\u6765\u8ba1\u7b97\u7535\u6d41\uff1aI=P/(1.732Ucos\u03c6)=800/(1.732x10x0.75\uff09=61.6A\uff08\u7535\u538b\u7b49\u7ea710kV\uff09\u3002
\u3000\u30001\u5e73\u65b9\u94dc\u7535\u7f06\u7684\u989d\u5b9a\u7535\u6d41\u4e3a6A\u3002\u56e0\u6b64\u7535\u7f06\u7684\u5e73\u65b9\u6570=61.6/6=10.3\u5e73\u65b9\u3002\u5de5\u7a0b\u4e0a\u7528\u7684\u94dc\u5bfc\u7ebf\uff0c\u4ee5\u622a\u9762\u79ef\uff08\u5e73\u65b9\u6beb\u7c73\uff09\u533a\u5206\u5176\u89c4\u683c\u6709\uff1a\uff081.5\uff1b2.5\uff1b4\uff1b6\uff1b10\uff1b16\uff1b25\uff1b35\uff1b50\uff1b70\uff1b95\uff1b120\uff1b150\uff1b185\uff09\u7b49\u3002\u56e0\u6b64\u53ef\u9009\u752816\u5e73\u65b9\u7684\u94dc\u7ebf\u3002
\u3000\u3000\u7535\u7f06\u7684\u9009\u62e9\u8fd8\u4e0e\u7535\u7f06\u957f\u5ea6\u3001\u7ebf\u8def\u6577\u8bbe\u5f62\u5f0f\u4ee5\u53ca\u7535\u7f06\u7684\u4f7f\u7528\u73af\u5883\u6e29\u5ea6\u6709\u5173\u3002\u5982\u679c\u7535\u7f06\u8f83\u957f\uff08\u5927\u4e8e50\u7c73\uff09\uff0c\u6709\u7a7f\u7ba1\u57cb\u5730\u6577\u8bbe\uff0c\u4e14\u73af\u5883\u6e29\u5ea6\u8f83\u9ad8\uff0c\u5e94\u900925\u5e73\u65b9\u7684\u94dc\u7ebf\u624d\u5b89\u5168\u3002
\u901a\u5e38\u4e0d\u7528\u7406\u8bba\u7b97\u6cd5\uff0c\u5b9e\u9645\u8003\u865175KW\u8fd0\u884c\u7535\u6d41\u4e3a150A\uff0c\u94dc\u82af\u7535\u7f063*50\u8f7d\u6d41\u91cf\u7ea6\u4e3a150A\uff0c\u542f\u52a8\u7535\u6d41\u4e3a\u8fd0\u884c\u7535\u6d41\u76847\u500d\u77ed\u65f6\u542f\u52a8\uff0c\u4e3a\u5b89\u5168\u8fd0\u884c\u957f\u671f\u3001\u8282\u6548\u8003\u8651\u53ef\u9009\u62e93*70---3*95\u3002
\u7535\u7f06\u76f8\u5173\u7f29\u5199\u542b\u4e49\uff1a
RVVP\uff1a\u94dc\u82af\u805a\u6c2f\u4e59\u70ef\u7edd\u7f18\u5c4f\u853d\u805a\u6c2f\u4e59\u70ef\u62a4\u5957\u8f6f\u7535\u7f06\u7535\u538b300V/300V 2-24\u82af\u3002
RG\uff1a\u7269\u7406\u53d1\u6ce1\u805a\u4e59\u70ef\u7edd\u7f18\u63a5\u5165\u7f51\u7535\u7f06\u7528\u4e8e\u540c\u8f74\u5149\u7ea4\u6df7\u5408\u7f51\uff08HFC\uff09\u4e2d\u4f20\u8f93\u6570\u636e\u6a21\u62df\u4fe1\u53f7\u3002
UTP\uff1a\u5c40\u57df\u7f51\u7535\u7f06\u7528\u9014\uff1a\u4f20\u8f93\u7535\u8bdd\u3001\u8ba1\u7b97\u673a\u6570\u636e\u3001\u9632\u706b\u3001\u9632\u76d7\u4fdd\u5b89\u7cfb\u7edf\u3001\u667a\u80fd\u697c\u5b87\u4fe1\u606f\u7f51\u3002
KVVP\uff1a\u805a\u6c2f\u4e59\u70ef\u62a4\u5957\u7f16\u7ec7\u5c4f\u853d\u7535\u7f06\u7528\u9014\uff1a\u7535\u5668\u3001\u4eea\u8868\u3001\u914d\u7535\u88c5\u7f6e\u7684\u4fe1\u53f7\u4f20\u8f93\u3001\u63a7\u5236\u3001\u6d4b\u91cf\u3002
SYWV\uff08Y\uff09\u3001SYKV \u6709\u7ebf\u7535\u89c6\u3001\u5bbd\u5e26\u7f51\u4e13\u7528\u7535\u7f06\u7ed3\u6784\uff1a\uff08\u540c\u8f74\u7535\u7f06\uff09\u5355\u6839\u65e0\u6c27\u5706\u94dc\u7ebf+\u7269\u7406\u53d1\u6ce1\u805a\u4e59\u70ef\uff08\u7edd\u7f18\uff09+\uff08\u9521\u4e1d+\u94dd\uff09+\u805a\u6c2f\u4e59\u70ef\uff08\u805a\u4e59\u70ef\uff09\u3002
RVV\uff08227IEC52/53\uff09\u805a\u6c2f\u4e59\u70ef\u7edd\u7f18\u8f6f\u7535\u7f06\u7528\u9014\uff1a\u5bb6\u7528\u7535\u5668\u3001\u5c0f\u578b\u7535\u52a8\u5de5\u5177\u3001\u4eea\u8868\u53ca\u52a8\u529b\u7167\u660e\u3002
AVVR \u805a\u6c2f\u4e59\u70ef\u62a4\u5957\u5b89\u88c5\u7528\u8f6f\u7535\u7f06\u3002
SBVV HYA \u6570\u636e\u901a\u4fe1\u7535\u7f06\uff08\u5ba4\u5185\u3001\u5916\uff09\u7528\u4e8e\u7535\u8bdd\u901a\u4fe1\u53ca\u65e0\u7ebf\u7535\u8bbe\u5907\u7684\u8fde\u63a5\u4ee5\u53ca\u7535\u8bdd\u914d\u7ebf\u7f51\u7684\u5206\u7ebf\u76d2\u63a5\u7ebf\u7528\u3002
RV\u3001RVP \u805a\u6c2f\u4e59\u70ef\u7edd\u7f18\u7535\u7f06\u3002
BV\u3001BVR \u805a\u6c2f\u4e59\u70ef\u7edd\u7f18\u7535\u7f06\u7528\u9014\uff1a\u9002\u7528\u4e8e\u7535\u5668\u4eea\u8868\u8bbe\u5907\u53ca\u52a8\u529b\u7167\u660e\u56fa\u5b9a\u5e03\u7ebf\u7528\u3002
RIB \u97f3\u7bb1\u8fde\u63a5\u7ebf\uff08\u53d1\u70e7\u7ebf\uff09\u3002
KVV \u805a\u6c2f\u4e59\u70ef\u7edd\u7f18\u63a7\u5236\u7535\u7f06\u7528\u9014\uff1a\u7535\u5668\u3001\u4eea\u8868\u3001\u914d\u7535\u88c5\u7f6e\u4fe1\u53f7\u4f20\u8f93\u3001\u63a7\u5236\u3001\u6d4b\u91cf\u3002
SFTP \u53cc\u7ede\u7ebf\u4f20\u8f93\u7535\u8bdd\u3001\u6570\u636e\u53ca\u4fe1\u606f\u7f51\u3002
UL2464 \u7535\u8111\u8fde\u63a5\u7ebf\u3002
VGA \u663e\u793a\u5668\u7ebf\u3002
SYV \u540c\u8f74\u7535\u7f06\u65e0\u7ebf\u901a\u8baf\u3001\u5e7f\u64ad\u3001\u76d1\u63a7\u7cfb\u7edf\u5de5\u7a0b\u548c\u6709\u5173\u7535\u5b50\u8bbe\u5907\u4e2d\u4f20\u8f93\u5c04\u9891\u4fe1\u53f7\uff08\u542b\u7efc\u5408\u7528\u540c\u8f74\u7535\u7f06\uff09\u3002
SDFAVP\u3001SDFAVVP\u3001SYFPY \u540c\u8f74\u7535\u7f06\uff0c\u7535\u68af\u4e13\u7528\u3002
JVPV\u3001JVPVP\u3001JVVP \u94dc\u82af\u805a\u6c2f\u4e59\u70ef\u7edd\u7f18\u53ca\u62a4\u5957\u94dc\u4e1d\u7f16\u7ec7\u7535\u5b50\u8ba1\u7b97\u673a\u63a7\u5236\u7535\u7f06\u3002
通常不用理论算法，实际考虑75KW运行电流为150A，铜芯电缆3*50载流量约为150A，启动电流为运行电流的7倍短时启动，为安全运行长期、节效考虑可选择3*70---3*95。
绛旓細鍦380V鐢靛帇75KW鐢垫満鍙橀鍣ㄦ帶鍒剁數璺腑锛屽簲璇ユ牴鎹數鏈虹殑棰濆畾鐢靛帇鍜岄瀹氬姛鐜囨潵纭畾鐢垫満鐨勬帴娉曘傚鏋滅數鏈虹殑棰濆畾鐢靛帇鏄380V锛閭ｄ箞鐢垫満搴旇閲囩敤涓夎褰㈡帴娉曘傚鏋滅數鏈虹殑棰濆畾鐢靛帇鏄220V锛岄偅涔堢數鏈哄簲璇ラ噰鐢ㄦ槦鍨嬫帴娉曘傚悎鍒╁＋鏄竴瀹朵笓涓鐨勭數鏈鏅鸿兘瑁呭鍥藉楂樻柊鎶鏈紒涓氾紝鑷村姏涓哄浗鍐呭瀹㈡埛鎻愪緵鏂拌兘婧愮數鏈虹郴缁熴佹苯杞︾儹绠＄悊绯...
绛旓細75kW鐨勭數鏈棰濆畾鐢靛帇鏄380V锛鏍规嵁鍥藉瑙勫畾锛岀數鏈虹數缂嗙殑鎴潰绉簲璇ユ牴鎹數鏈洪瀹氱數娴佹潵閫夋嫨銆傚亣璁剧數鏈洪瀹氱數娴佷负150A宸﹀彸锛岄渶瑕侀夋嫨鐢电紗鎴潰绉负95mm²鐨勭數缂嗭紝杩欐牱鎵嶈兘婊¤冻鐢垫満鐨勭數娴侀渶姹傘傜┖寮鐨勯夋嫨涔熼渶瑕佹牴鎹數鏈虹殑棰濆畾鐢垫祦鏉ョ‘瀹氥備竴鑸儏鍐典笅锛75kW鐨勭數鏈洪渶瑕侀夋嫨棰濆畾鐢垫祦澶т簬绛変簬150A鐨勭┖寮锛屽悓鏃惰冭檻鍒...
绛旓細棰濆畾鐢垫祦 = 75,000 梅 380 脳 0.8 鈮 197.4A 鍥犳锛75鍗冪摝鐢垫満380V棰濆畾鐢垫祦绾︿负197.4A銆傞渶瑕佹敞鎰忕殑鏄紝鐢垫満鐨勫疄闄呯數娴佽繕灏嗗彈鍒板叾璐熻浇鎯呭喌銆佷娇鐢ㄧ幆澧冪瓑鍥犵礌鐨勫奖鍝嶏紝鍏蜂綋鏁板煎簲璇ユ牴鎹叿浣撶殑搴旂敤鎯呭喌杩涜璇勪及銆
绛旓細涓夌浉浜岀櫨浜岃礋鑽凤紝鍗冪摝涓夌偣浜斿畨鍩癸紙KW/3.5A锛夛紱甯哥敤涓夌櫨鍏礋鑽凤紝涓涓崈鐡︿袱瀹夊煿(KW/2A)锛屼綆鍘嬪叚鐧惧叚璐熻嵎锛屽崈鐡︿竴鐐逛簩瀹夊煿(KW/1.2A)锛涗竴鍗冧竴鐧惧洓鍗佷紡锛屾瘡涓崈鐡︾偣鍏竷锛圞W/0.67A锛夛紱楂樺帇涓夊崈浼忚礋鑽凤紱鍥涗釜鍗冪摝涓瀹夊煿(4KW/1A)锛380V鐢靛帇涓嬶紝75鍗冪摝鐨婊¤浇鐢垫祦涓150A銆傚彲閫夌數缂嗕负50骞虫柟鐨勯摐鑺嚎锛...
绛旓細棰濆畾鍔熺巼=75kW锛屼笁鐩鐢靛帇=380V锛鍔熺巼鍥犳暟=0.8锛岄瀹氱數娴=142.5A锛屽彲閫夌數缂嗭細35mm² PVC濉戞枡缁濈紭 鍗曡姱閾滅嚎锛屾帹鑽愯浇娴侀噺145A锛岀浉搴斿姛鐜76.4kW锛鐢电紗婊¤礋鑽锋椂5%鐢靛帇鎹熷け璺濈涓249.5m锛25mm² PE濉戞枡缁濈紭 鍗曡姱閾滅嚎锛屾帹鑽愯浇娴侀噺150A锛岀浉搴斿姛鐜79kW锛岀數缂嗘弧璐熻嵎鏃5%鐢靛帇鎹熷け璺濈涓172.3m...
绛旓細380V鐨勪笁鐩稿紓姝鐢靛姩鏈虹殑棰濆畾鐢垫祦宸ョ▼浼扮畻鍙互鎸夌収鐢垫満鍔熺巼x2鍗充负鐢垫満棰濆畾鐢垫祦銆傜簿纭绠楀叕寮忔槸锛欼锛漃/锛1.732xUxcos蠁x畏锛夛紝鍗抽瀹氱數娴佷负鐢垫満鍔熺巼闄や互鏍瑰彿3锛屽啀闄や互鐢垫満鐢靛帇锛鍐嶉櫎浠ュ姛鐜囧洜鏁帮紝鍐嶉櫎浠ユ晥鐜囥備及绠楁柟寮忓緱鍒扮數娴佷负锛75x2=150A銆傜簿纭绠楁柟寮忓緱鍒扮數娴佷负锛欼锛漃/锛1.732xUxcos蠁x畏锛=...
绛旓細75鍗冪摝鐨鍏瀬鐢垫満锛圝O2绯诲垪锛夐瀹氱數娴佷负139A锛屽叾瀹冭鏍肩殑75鍗冪摝鐢垫満棰濆畾鐢垫祦搴旇鏄135鈥140A宸﹀彸銆
绛旓細棣栧厛鎴戜滑鏉ヤ簡瑙ｄ竴涓75KW鐢垫満鍦ㄤ竴鑸儏鍐典笅鐨勫伐浣滅數娴佸ぇ灏忋傛牴鎹姛鐜囧叕寮廝=UI锛屽叾涓璓鏄姛鐜囷紝U鏄數鍘嬶紝I鏄數娴併傚湪鎴戝浗鐨勬櫘閫氬伐涓氱敤鐢典腑锛岄氬父浣跨敤鐨勭數鍘嬫槸380V銆傚洜姝わ紝鎴戜滑鍙互璁＄畻鍑75KW鐢垫満鐨勯瀹氱數娴佸ぇ绾︿负150A銆傛帴涓嬫潵锛屾垜浠渶瑕佽冭檻涓鸿繖涓數娴侀夋嫨鍚堥傜殑鐢电紗銆傚湪閫夋嫨鐢电紗鏃讹紝鎴戜滑闇瑕佽冭檻鐢电紗鐨勮浇娴侀噺...
绛旓細棰濆畾鐢靛帇涓夌櫨鍏崄浼忕殑75鍗冪摝涓夌浉寮傛鐢靛姩鏈猴紝鐢变簬绉暟涓庣數鍣ㄥ弬鏁拌璁′笉鍚岋紝棰濆畾鐢垫祦澶ц嚧鍦135瀹夊乏鍙炽
绛旓細绛旓細380V鐢靛帇鐨勪笁鐩哥數婧愶紝75kW鐢25骞虫柟閾滆姱鐢电紗锛堟垨鑰35骞虫柟閾濊姱鐢电紗锛夈傝В鏋愶細380V鐢垫簮鏄笁鐩哥數锛屾牴鎹笁鐩哥數鍔熺巼鍏紡锛歅=鈭3*U*I*cos蠄锛屽叾涓璓涓哄姛鐜囷紝鈭3鈮1.732涓轰笁鐩哥數鍊嶇巼锛孶涓鐢靛帇锛I涓虹數娴侊紝cos蠁涓哄姛鐜囧洜鏁帮紙涓鑸彇0.8锛夛紝鍙緱 I=P/鈭3*U*cos蠄=75000/(1.732脳380脳0.8)鈮142...
