300平方铝芯电缆在1000米外能带多大功率 300平方的铝芯电缆能带多大功率？
300\u5e73\u65b9\u7684\u94dd\u82af\u7535\u7f06\u80fd\u5e26\u591a\u5927\u529f\u7387\u5462300\u5e73\u65b9\u7684\u94dd\u7ebf\u80fd\u5e26289.5\u5343\u74e6\u3002
\u7531\u4e09\u76f8\u7535\u673a\u516c\u5f0f\u5f97\uff1aP=1.732UIcos\u03a6
\u6240\u4ee5\u529f\u7387P=1.732*0.38*0.8*550=289.5\u5343\u74e6\uff0ccos\u03a6\u4e3a0.8\u3002\u7535\u538b\u4e3a380V\u3002
300\u5e73\u65b9\u7684\u94dd\u7ebf\u627f\u8f7d\u7535\u6d41\u4e3a550A\u3002
\u4f8b\u5982\uff1a
\u7535\u963bR=0.0315*1000\uff0f300=0.105\u6b27
\u5c06\u7a7a\u8f7d\u7535\u538b420v\uff0c\u7535\u6d41\u63091.9A/1kw\u4f30\u7b97
\u542f\u52a8du\u7535\u538b\u964d20%=84v
\u8fd0\u884c\u7535\u538b\u964d10%=42v
\u6839\u636e\u6b27\u59c6\u5b9a\u5f8b84\uff0f0.1.5=800A\uff08\u542f\u52a84\u500d\uff09
800\uff0f4\uff0f1.9=105kw
42\uff0f0.1.5=400A/1.9=210.5kw
\u6839\u636e\u8ba1\u7b97\u5982\u9898\u80fd\u5e26210kw-250kw\u8d1f\u8377
\u6700\u5927\u7535\u52a8\u673a\u5b9c\u5728100kw\u5185\u3002
\u6269\u5c55\u8d44\u6599\uff1a
\u201c\u4e8c\u70b9\u4e94\u4e0b\u4e58\u4ee5\u4e5d\uff0c\u5f80\u4e0a\u51cf\u4e00\u987a\u53f7\u8d70\u201d\u8bf4\u7684\u662f2.5mm\u2019\u53ca\u4ee5\u4e0b\u7684\u5404\u79cd\u622a\u9762\u94dd\u82af\u7edd\u7f18\u7ebf\uff0c\u5176\u8f7d\u6d41\u91cf\u7ea6\u4e3a\u622a\u9762\u79ef\u6570\u76849\u500d\u3002\u59822.5mm\u2019\u5bfc\u7ebf\uff0c\u8f7d\u6d41\u91cf\u4e3a 2\uff0e5\u00d79=22.5(A)\u3002\u4ece4mm\u2019\u53ca\u4ee5\u4e0a\u5bfc\u7ebf\u7684\u8f7d\u6d41\u91cf\u548c\u622a\u9762\u79ef\u6570\u7684\u500d\u6570\u5173\u7cfb\u662f\u987a\u7740\u7ebf\u53f7\u5f80\u4e0a\u6392\uff0c\u500d\u6570\u9010\u6b21\u51cfl\uff0c\u53734\u00d78\u30016\u00d77\u300110\u00d76\u300116\u00d75\u3001 25\u00d74\u3002
\u201c\u4e09\u5341\u4e94\u4e58\u4e09\u70b9\u4e94\uff0c\u53cc\u53cc\u6210\u7ec4\u51cf\u70b9\u4e94\u201d\uff0c\u8bf4\u7684\u662f35mm\u201d\u7684\u5bfc\u7ebf\u8f7d\u6d41\u91cf\u4e3a\u622a\u9762\u79ef\u6570\u76843.5\u500d\uff0c\u537335\u00d73.5=122\uff0e5(A)\u3002\u4ece50mm\u2019\u53ca\u4ee5\u4e0a\u7684\u5bfc\u7ebf\uff0c\u5176\u8f7d\u6d41\u91cf\u4e0e\u622a\u9762\u79ef\u6570\u4e4b\u95f4\u7684\u500d\u6570\u5173\u7cfb\u53d8\u4e3a\u4e24\u4e2a\u4e24\u4e2a\u7ebf\u53f7\u6210\u4e00\u7ec4\uff0c\u500d\u6570\u4f9d\u6b21\u51cf0\uff0e5\u3002\u537350\u300170mm\u2019\u5bfc\u7ebf\u7684\u8f7d\u6d41\u91cf\u4e3a\u622a\u9762\u79ef\u6570\u76843\u500d\uff1b95\u3001120mm\u201d\u5bfc\u7ebf\u8f7d\u6d41\u91cf\u662f\u5176\u622a\u9762\u79ef\u6570\u76842.5\u500d\uff0c\u4f9d\u6b21\u7c7b\u63a8\u3002
\u53c2\u8003\u8d44\u6599\u6765\u6e90\uff1a\u767e\u5ea6\u767e\u79d1-\u7535\u7f06\u8f7d\u6d41\u91cf
300\u5e73\u65b9\u7684\u94dd\u82af\u7535\u7f06\u5927\u6982\u80fd\u5e26350-420KW\u3002
\u7535\u7f06\u89c4\u683c\u578b\u53f7\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
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
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
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
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
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
AVVR \u805a\u6c2f\u4e59\u70ef\u62a4\u5957\u5b89\u88c5\u7528\u8f6f\u7535\u7f06
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
RV\u3001RVP \u805a\u6c2f\u4e59\u70ef\u7edd\u7f18\u7535\u7f06
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
RIB \u97f3\u7bb1\u8fde\u63a5\u7ebf\uff08\u53d1\u70e7\u7ebf\uff09
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
SFTP \u53cc\u7ede\u7ebf\u4f20\u8f93\u7535\u8bdd\u3001\u6570\u636e\u53ca\u4fe1\u606f\u7f51
UL2464 \u7535\u8111\u8fde\u63a5\u7ebf
VGA \u663e\u793a\u5668\u7ebf
YV \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
将空载电压420v，电流按1.9A/1kw估算
启动电压降20%=84v
运行电压降10%=42v
根据欧姆定律84／0.1.5=800A（启动4倍）
800／4／1.9=105kw
42／0.1.5=400A/1.9=210.5kw
根据计算如题能带210kw-250kw负荷，
最大电动机宜在100kw内。
绛旓細鑳藉甫2鍗冪摝銆傚師鍥犳槸锛氬浗瀹惰瀹氾細2涔樹互30骞虫柟閾绾垮彲鎵胯浇璐熻浇鍔熺巼涓嶅緱瓒呰繃2鍗冪摝銆閾濊姱鐢电紗绾挎槸涓鏍归摱鐧借壊閾濊姱瀵间綋鐨勫渾褰㈢數绾匡紝鍦ㄥ绾垮鍖呰９杩欎竴灞傜粷缂樻潗鏂欙紝闃叉瀵肩數浣撲笌澶栫晫鎺ヨЕ閫犳垚婕忕數銆佺煭璺佽Е鐢电瓑銆
绛旓細鍦ㄨ繖绉嶆儏鍐典笅锛屽嚟鍊1000绫闀垮害鍜10涓骞虫柟閾濊姱绾匡紝鏍规嵁瀹夎璺濈鍜鐢电嚎鐨鏂潰绉彲浠ヤ及绠楁渶澶ц礋杞界數鑳界殑鍊笺傛牴鎹浗鍐鐢电嚎鐢电紗鐨勬爣鍑嗭紝鏈澶ц礋杞藉垎鍒负锛1. 220浼忕數鍘嬩笅锛10骞虫柟閾濊姱绾跨殑鏈澶ц礋杞戒负30瀹夛紝鏈澶ц礋杞界數鑳戒负6.6鍗冪摝锛坘W锛夈2. 220浼忕數鍘嬩笅锛屼娇鐢ㄦ洿澶х殑閾濊姱绾匡紙姣斿25骞虫柟閾濊姱绾匡級鐨勬渶澶...
绛旓細鍗曠浉姣忕浉绾跨數鍘嬮檷涓猴細U锛26.6V/1.732=15.4V 瀵肩嚎鍏佽鐨勬渶澶х數闃讳负锛歊锛漊/I锛15.4V/60A鈮0.257惟 璺濈锛歀锛1000绫,閾濈嚎鐢甸樆鐜囷細蟻锛0.0294惟mm²/m 鍒欏彲浼扮畻瀵肩嚎鎴潰绉负锛歋锛澫伱桳/R锛0.0294脳100/0.257鈮114.4mm²鐓ц繖涓粨鏋滈120mm²鐨閾濊姱绾挎槸瀹屽叏OK鐨.濡傛灉浣...
绛旓細100kw璐熻嵎鐨勭數娴侊細I=P梅(1.732脳U脳cos蠁)=100000梅锛1.732脳38脳0.8锛夆増190a 3鐩380v鐢垫簮锛岃繙绔數鍘嬮檷婊¤冻鈮 -7% 锛26.6v锛夛紝閾濊姱鐢电紗鐨勭數闃诲硷細R=鈻砋梅I=26.6梅190=0.14惟 鏍规嵁鐢甸樆鍊硷紝閫夋嫨1000绫閾濊姱绾挎埅闈㈢Н锛1000绫120骞虫柟姣背閾濊姱绾跨數闃0.236惟锛2鏍瑰苟鑱旂數闃0.118惟锛堬紲0....
绛旓細浣犲ソ锛氫笁鐩稿洓绾閾濈數缂100骞虫柟瀹夊叏杞芥祦閲忎负280A宸﹀彸锛屾瘡鐩220V涔樹互280A=62kW锛屼笁鐩告诲姛鐜185kW銆傚鏋滈暱搴1000绫锛岀數闃=0.32娆э紝鏍规嵁鐢靛姏绾胯矾瑕佹眰棰濆畾鐢靛帇220V鏃跺彲鍦200V-240V鑼冨洿鍐呬娇鐢紝鍦ㄧ數婧愮鐢靛帇淇濊瘉220V浠ヤ笂锛岀數缂嗙粓绔厑璁稿帇闄20V锛岄氳繃鐢垫祦=62A锛200V涔樹互62A=12.4kW锛堟瘡鐩革級锛屾诲姛鐜囦负37.2kW銆
绛旓細1000绫鐨勮窛绂伙紝18KW鐨勮礋鑽枫傛渶涓昏鏄淇濊瘉鐢靛帇鍦353.4V浠ヤ笂锛堢數鍘嬫崯鑰楄鎺у埗鍦26.6V浠ュ唴锛夛紝鐢垫満鎵嶈兘姝ｅ父宸ヤ綔銆18KW鐨勮礋鑽风數娴佹槸36A宸﹀彸銆(1000/35/x)X36X2<26.6鍒檟=78,鍗虫槸閫夊彇95骞虫柟鎴栦互涓婄殑鐢电紗锛屽缓璁夊彇120骞虫柟鐨
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绛旓細S=300mm2 p=0.0315.mm2/m L-240m U=380v P=300kw 鍋囧畾COS=0.8 R=0.0315*240/300=0.0252娆 I=300/1.732*0.38*0.8=300/0.526528=569.8A 绾挎崯P=3I2R=3*569.8*569.8*0.0252=24545w/1000=24.5kw 24.5/300%=8.2 绛旓細濡傞婊¤浇鏃剁悊璁轰笂绾挎崯24.5kw锛岀嚎鎹...
绛旓細300閾濊姱鐢电紗500绫抽暱鑳芥壙杞藉澶х數娴侊紵濡備綍璁＄畻锛熸牴鎹粡楠屼及绠楋紝搴旇鍙互閫氳繃150A鐨勭數娴侊紝鐢靛帇闄嶅湪30V宸﹀彸銆傚鏋滅數鍘嬫槸380V锛70KW鏈変竴鐐逛笉澶熴備絾鏄數鍘嬩笉鍚岋紝鑳芥壙鍙楃殑鍔熺巼鏄笉涓鏍风殑銆傚鏋滄槸600V,鎴栬鏄1000V灏卞彲浠ユ壙鍙70鍗冪摝銆
绛旓細鏌ラ槄鐢熶骇鍘傜殑鐢电紗鍙傛暟琛ㄥ彲鐭ワ紝3x35mm²+1x10mm²鐨閾濊姱鐢电紗鐨勮浇娴侀噺绾︿负97.5A锛堢┖姘斾腑鏁疯锛夋垨116.6A锛堝湡澹や腑鏁疯锛夈傝涓嬭〃锛35mm²閾濈嚎鐢电紗鐨勭洿娴佺數闃绘槸0.868娆/km銆傝涓嬭〃锛1銆佸厛璁＄畻涓涓1000绫崇數缂嗗湪杞芥祦閲忓间笅宸ヤ綔浜х敓鐨勫帇闄峍d锛氬浗鏍囪瀹氾紝锛380V锛20KV浠ヤ笅绯荤粺缁堢鐢靛帇涓...
