380V电压长度1500米电功率100KW95平方毫米铝芯电缆的电压损耗是多少？ 在380v电压下负载150kw需多大四芯电缆?
380V\u7535\u538b\u957f\u5ea6600\u7c73\u7535\u529f\u7387300KW95\u5e73\u65b9\u6beb\u7c73\u94dc\u82af\u7535\u7f06\u7684\u7535\u635f\u8017\u662f\u591a\u5c11\u5728\u4e0d\u540c\u6e29\u5ea6\u4e0b,\u94dc\u7684\u7535\u963b\u4e0d\u540c.
21\u6444\u6c0f\u5ea6\u65f6,600\u7c73,95\u5e73\u65b9\u6beb\u7c73\u94dc\u82af\u7535\u7f06 \u7535\u963b\u662f0.11936 \u03a9
40\u6444\u6c0f\u5ea6\u65f6,600\u7c73,95\u5e73\u65b9\u6beb\u7c73\u94dc\u82af\u7535\u7f06 \u7535\u963b\u662f0.1279 \u03a9 (\u5b9e\u9645\u5e94\u7528\u4e2d\u6211\u4eec\u90fd\u5e94\u8be5\u4f7f\u752840\u6444\u6c0f\u5ea6\u6765\u8ba1\u7b97,\u4f55\u51b5\u8d85\u8f7d\u53d1\u70ed\u65f6\u6709\u65f6\u8fd8\u4e0d\u6b62\u8fd9\u4e2a\u6e29\u5ea6)
300KW 380V\u7684\u7535\u6d41\u662f 300000kw/380v=789A
\u8fd9\u4e00\u6bb5\u7ebf\u8def\u9020\u6210\u7684\u7535\u538b\u635f\u8017\u662f 789A x 0.1279 \u03a9 = 100.9v
\u6211\u4e0a\u9762\u7b97\u7684\u7535\u538b\u635f\u8017\u53ea\u662f\u5355\u7ebf\u7684, \u7531\u4e8e\u662f\u4ea4\u6d41\u7535,\u6240\u4ee5\u7535\u538b\u635f\u8017\u662f100.9X2 =218V
\u8fd9\u6837\u7684\u8bdd,\u5230\u7ec8\u7aef\u7684\u65f6\u5019,\u4f60\u975e\u8981\u5e26\u8fd9\u4e48\u5927\u529f\u7387\u7684\u8bdd(\u4e8b\u5b9e\u4e0a\u662f\u5e26\u4e0d\u8d77\u7684), \u7535\u538b\u53ea\u6709380-218=162V
\u5927\u54e5,\u4f60\u8fd9\u6837\u5b50\u662f\u4e0d\u884c\u7684,300KW\u8fd9\u4e48\u5927\u7684\u529f\u7387, \u8fd9\u4e48\u8fdc\u7684\u8ddd\u79bb,\u4e3a\u4e86\u8fbe\u5230\u7535\u538b\u635f\u8017\u4e0d\u8d85\u8fc710%\u7684\u8981\u6c42, \u4f60\u6bcf\u6839\u7ebf\u81f3\u5c11\u8981550\u5e73\u65b9\u6beb\u7c73, \u60f3\u8c61\u4e00\u4e0b\u4e5f\u77e5\u9053\u5355\u662f\u4e70\u7ebf\u4e5f\u662f\u5929\u4ef7\uff0c\u800c\u4e14\u8fd1800A\u7684\u5f00\u5173\u4e5f\u662f\u5929\u4ef7\u3002\u8fd9\u4e48\u5927\u7684\u529f\u7387\u4f60\u5e94\u8be5\u7533\u8bf7 11kv \u9ad8\u538b\u7535\u5230\u4f60\u4eec\u914d\u7535\u623f,\u7136\u540e \u518d\u53d8\u538b\u5230400V ,\u8fd9\u6837\u8fd9\u6bb5600\u7c73\u7684\u7ebf\u5c31\u53ef\u4ee5\u4f7f\u7528\u5c0f\u4e00\u70b9\u7684\u94dd\u7ebf. \u81f3\u4e8e\u662f\u591a\u5c11 ,\u4f9b\u7535\u5c40\u7684\u4f1a\u7ed9\u4f60\u8ba1\u7b97\u7684\u4e86.\u8fd9\u6211\u5c31\u4e0d\u9ebb\u70e6\u4e86.
\u795d\u4f60\u597d\u8fd0\u3002
\u5728380v\u7535\u538b\u4e0b\u8d1f\u8f7d150KW\u970067.032MM²\u7684\u56db\u82af\u94dc\u7535\u7f06\u3002
\u6839\u636e\u4e09\u76f8\u7535\u529f\u7387\u8ba1\u7b97\u516c\u5f0f\uff1a
P=\u221a3UIcosa\uff08cosa\u4e3a\u529f\u7387\u56e0\u6570\uff0c\u4e00\u822c\u53d6\u503c0.85\uff09
\u94dc\u5bfc\u7ebf\u7684\u7535\u6d41\u8f7d\u6d41\u91cf\u4e00\u822c\u53d6\u503c4A/MM²
I=150000\u00f7\uff081.732\u00d7380\u00d70.85\uff09=268.127\uff08\u5b89\u57f9\uff09
\u7535\u7f06\u5bfc\u7ebf\u622a\u9762\u79ef=268.127\u00f74=67.032\uff08MM²\uff09
\u6269\u5c55\u8d44\u6599\uff1a
\u5728\u7535\u529b\u5de5\u7a0b\u4e2d\uff0c\u5bfc\u7ebf\u8f7d\u6d41\u91cf\u662f\u6309\u7167\u5bfc\u7ebf\u6750\u6599\u548c\u5bfc\u7ebf\u622a\u9762\u79ef\uff08\u5355\u4f4d\u5e73\u65b9\u6beb\u7c73\uff0c\u7b80\u79f0\u5e73\u65b9\uff09\u3001\u5bfc\u7ebf\u6577\u8bbe\u6761\u4ef6\u4e09\u4e2a\u56e0\u7d20\u51b3\u5b9a\u7684\u3002\u4e00\u822c\u6765\u8bf4\uff0c\u5355\u6839\u5bfc\u7ebf\u6bd4\u591a\u6839\u5e76\u884c\u5bfc\u7ebf\u53ef\u53d6\u8f83\u9ad8\u7684\u8f7d\u6d41\u91cf\uff1b\u660e\u7ebf\u6577\u8bbe\u5bfc\u7ebf\u6bd4\u7a7f\u7ba1\u6577\u8bbe\u7684\u5bfc\u7ebf\u53ef\u53d6\u8f83\u9ad8\u7684\u8f7d\u6d41\u91cf\uff1b\u94dc\u8d28\u5bfc\u7ebf\u53ef\u4ee5\u6bd4\u94dd\u5236\u5bfc\u7ebf\u53d6\u8f83\u9ad8\u7684\u8f7d\u6d41\u91cf\u3002\u5bfc\u7ebf\u8f7d\u6d41\u91cf\u53d6\u503c\u5e94\u7b26\u5408\u56fd\u9645\u7535\u5de5\u534f\u4f1aIEC-60364-5-523-1983\u6807\u51c6\u3002
\u4e2d\u56fd\u56fd\u5bb6\u6807\u51c6GB/T 4706.1-2005\u89c4\u5b9a\u7684\u7535\u7ebf\u8d1f\u8f7d\u7535\u6d41\u503c\uff08\u90e8\u5206\uff09
1\u5e73\u65b9\u94dc\u82af\u7ebf\u5141\u8bb8\u957f\u671f\u8d1f\u8f7d\u7535\u6d41\u4e3a\uff1a8A\u201412A
1.5\u5e73\u65b9\u94dc\u82af\u7ebf\u5141\u8bb8\u957f\u671f\u8d1f\u8f7d\u7535\u6d41\u4e3a\uff1a12A\u201415A
2.5\u5e73\u65b9\u94dc\u82af\u7ebf\u5141\u8bb8\u957f\u671f\u8d1f\u8f7d\u7535\u6d41\u4e3a\uff1a16A\u201425A
4\u5e73\u65b9\u94dc\u82af\u7ebf\u5141\u8bb8\u957f\u671f\u8d1f\u8f7d\u7535\u6d41\u4e3a\uff1a25A\u201432A
6\u5e73\u65b9\u94dc\u82af\u7ebf\u5141\u8bb8\u957f\u671f\u8d1f\u8f7d\u7535\u6d41\u4e3a\uff1a32A\u201440A
\u6ce8\uff1a\u4e0a\u8ff0\u7684\u201c\u5e73\u65b9\u201d\uff0c\u6307\u7684\u662f\u201c\u5e73\u65b9\u6beb\u7c73\u201d
\u4f5c\u4e3a\u8868\u793a\u7535\u6d41\u505a\u529f\u5feb\u6162\u7684\u7269\u7406\u91cf\uff0c\u4e00\u4e2a\u7528\u7535\u5668\u529f\u7387\u7684\u5927\u5c0f\u6570\u503c\u4e0a\u7b49\u4e8e\u5b83\u57281\u79d2\u5185\u6240\u6d88\u8017\u7684\u7535\u80fd\u3002\u5982\u679c\u5728"t"\uff08SI\u5355\u4f4d\u4e3as\uff09\u8fd9\u4e48\u957f\u7684\u65f6\u95f4\u5185\u6d88\u8017\u7684\u7535\u80fd\u201cW\u201d\uff08SI\u5355\u4f4d\u4e3aJ\uff09\uff0c\u90a3\u4e48\u8fd9\u4e2a\u7528\u7535\u5668\u7684\u7535\u529f\u7387[1] \u5c31\u662fP=W/t\uff08\u5b9a\u4e49\u5f0f\uff09\u7535\u529f\u7387\u7b49\u4e8e\u5bfc\u4f53\u4e24\u7aef\u7535\u538b\u4e0e\u901a\u8fc7\u5bfc\u4f53\u7535\u6d41\u7684\u4e58\u79ef\u3002[2]
P=U\u00b7I\u3002\u5bf9\u4e8e\u7eaf\u7535\u963b\u7535\u8def\uff0c\u8ba1\u7b97\u7535\u529f\u7387\u4e5f\u53ef\u4ee5\u7528\u516c\u5f0fP=I²*R\u6216\u8005P=U² /R\u3002
\u6bcf\u4e2a\u7528\u7535\u5668\u90fd\u6709\u4e00\u4e2a\u6b63\u5e38\u5de5\u4f5c\u7684\u7535\u538b\u503c\u53eb\u989d\u5b9a\u7535\u538b\uff0c\u7528\u7535\u5668\u5728\u989d\u5b9a\u7535\u538b\u4e0b\u6b63\u5e38\u5de5\u4f5c\u7684\u529f\u7387\u53eb\u505a\u989d\u5b9a\u529f\u7387\uff0c\u7528\u7535\u5668\u5728\u5b9e\u9645\u7535\u538b\u4e0b\u5de5\u4f5c\u7684\u529f\u7387\u53eb\u505a\u5b9e\u9645\u529f\u7387\u3002
\u4e09\u76f8\u4ea4\u6d41\u7535\u529f\u7387\u8ba1\u7b97\u516c\u5f0f\u662f\uff1aP=\u221a3UIcosa\uff0c\u7535\u6d41I=P\u00f7\uff08\u221a3Ucosa\uff09
\u4e09\u76f8\u7535\u8def\u7684\u603b\u529f\u7387\u3002\u5b83\u7b49\u4e8e\u5404\u76f8\u529f\u7387\u7684\u603b\u548c\u3002\u4e09\u76f8\u7535\u8def\u6709\u5bf9\u79f0\u4e09\u76f8\u7535\u8def\u548c\u4e0d\u5bf9\u79f0\u4e09\u76f8\u7535\u8def\u4e4b\u5206\u3002
\u529f\u7387\u6709\u5e73\u5747\u529f\u7387\uff08\u5373\u6709\u529f\u529f\u7387\uff09\u3001\u65e0\u529f\u529f\u7387\u548c\u89c6\u5728\u529f\u7387\u4e4b\u5206\u3002
\u4e09\u76f8\u8d1f\u8f7d\u7684\u77ac\u65f6\u529f\u7387p=pA+pB+pC=3UpIpcos=P\u3002\u53ef\u89c1\uff0c\u5bf9\u79f0\u4e09\u76f8\u7535\u8def\u4e2d\u4e09\u76f8\u8d1f\u8f7d\u7684\u77ac\u65f6\u529f\u7387\u662f\u4e00\u4e2a\u4e0e\u65f6\u95f4\u65e0\u5173\u7684\u5b9a\u503c\uff0c\u5c31\u7b49\u4e8e\u5e73\u5747\u529f\u7387P\u3002
\u53c2\u8003\u8d44\u6599\u6765\u6e90\uff1a\u767e\u5ea6\u767e\u79d1-\u5bfc\u7ebf\u8f7d\u6d41\u91cf
\u53c2\u8003\u8d44\u6599\u6765\u6e90\uff1a\u767e\u5ea6\u767e\u79d1-\u7535\u529f\u7387
\u53c2\u8003\u8d44\u6599\u6765\u6e90\uff1a\u767e\u5ea6\u767e\u79d1-\u4e09\u76f8\u7535\u8def
\u53c2\u8003\u8d44\u6599\u6765\u6e90\uff1a\u767e\u5ea6\u767e\u79d1-\u4e09\u76f8\u7535\u8def\u529f\u7387
压降U=I*R=190*0.0283*1500*1.7/95=144V，电机不能正常工作，所以，实际压降和损耗不可预测。只能实际测量。
绛旓細鍦ㄥ疄闄呯數绾跨殑閫夋嫨鍜屽畨瑁呰繃绋嬩腑锛屽畨鍏ㄥ洜绱犲繀椤昏鑰冭檻銆傜數绾跨殑宸ヤ綔娓╁害銆佸瑙傚彈鐑▼搴︺佽繃杞藉閲忓拰鐭矾瀹归噺绛夊洜绱犻兘搴旇鍦ㄩ夌敤鐢电嚎瑙勬牸鏃惰鑰冭檻杩涘幓銆傞夌敤鐨勭數绾胯鏍煎簲瓒呰繃鏈澶х數娴佸肩殑瑕佹眰锛屼互纭繚鐢电嚎鐨勫畨鍏ㄦс傚亣璁惧湪涓涓偉鐨傚伐鍘備腑锛岄渶瑕佸竷灞鐢电嚎锛屽苟鍐冲畾浣跨敤380v鐢靛帇鍜屾渶澶у姛鐜50kw鐨勭數鍣紝鐢电嚎闀垮害涓100绫...
绛旓細鎬诲姛鐜42鍗冪摝锛屼互璐熻浇鎬荤數娴80A銆35骞虫柟閾滆姱鐢电嚎璁＄畻銆35骞虫柟閾滆姱鐢电嚎姣忔牴鐨勭嚎闃诲(鐢甸樆鐜囦负0.0172)锛歊锛澫伱桳/S锛0.0172脳700/35锛0.344(惟)鏈绾夸笌绾(2鏍圭嚎)鎹熻楃殑鐢靛帇闄嶏細U锛2RI锛2脳(0.344脳80)鈮55(V)
绛旓細鐢垫崯杩樻湁鎸夌绠楃殑锛熻薄浣犺鐨勮繖绉嶆儏鍐典竴涓湀閮戒笉浼氳秴杩3搴︾數锛屼竴鑸瀹氶摑閾扮嚎绾挎崯涓烘荤敤鐢甸噺鐨勫崈鍒嗕箣3銆
绛旓細涓夌浉380v鍔鐜囪绠楀叕寮忥細P=鈭3脳u脳I脳cos蠁銆傚叾涓紝P涓轰笁鐩鐢靛姛鐜锛屽崟浣嶄负鐡︼紙W锛夛紱U涓虹嚎鐢靛帇锛屽崟浣嶄负浼忕壒锛圴锛夛紱I涓虹嚎鐢垫祦锛屽崟浣嶄负瀹夊煿锛圓锛夛紱cos蠁涓哄姛鐜囧洜鏁般傚湪涓夌浉鐢电郴缁熶腑锛岀數鍘嬪拰鐢垫祦鍒嗗埆鏈夌嚎鐢靛帇鍜岀嚎鐢垫祦锛屽畠浠殑鍏崇郴涓猴細U绛変簬鈭3脳U绾縄=鈭3脳I绾垮叾涓紝U绾夸负鐩哥數鍘嬶紝I绾夸负鐩哥數娴...
绛旓細涓句緥璇存槑锛15KW鐢靛姩鏈380V銆傚綋鐢鐢电數鍘涓380V鏃讹細P=UICOS蠁/1.72锛 姝ゆ椂鐢垫祦涓猴細I=15KW/380V/0.83(COS蠁,鍔熺巼鍥犳暟/1.72x1000=27.7A.(绾跨數娴侊級銆備氦娴佺數娴佷笌鍔熺巼鐨勫叧绯伙細鍗曠浉锛欼=P/220锛 涓夌浉锛欼=P/1.73脳380銆傜洿娴鐢靛姛鐜锛歅=U*I =I²R =U²/R銆
绛旓細鐪嬩綘鐢靛帇绛夌骇鏄灏戯紝380V锛岀數娴佷负668瀹夛紝660V鐢垫祦涓384瀹夛紝鎸夌粡楠岀數缂嗚浇娴侀噺涓鑸寜姣忓钩鏂4瀹夌數娴侀夊彇鐢电紗锛屾墍浠ュ鏋滄槸380鐢靛帇锛屽簲閫夌敤195骞虫柟鐢电紗锛屽鏋滄槸660鐢靛帇锛屽簲閫95骞虫柟鐢电紗
绛旓細95閾濊晩鐢电紗鍙互甯﹁浇鏈澶у姛鐜囦负20A锛1500绫鍚庡彲甯﹀澶у姛鐜囩殑鐢靛櫒涓20A銆
绛旓細鍔熺巼210鍗冪摝鐢靛帇380浼忕壒渚涚數璺濈400绫抽夌敤300骞虫柟姣背鐨勯摐鑺數缂嗐傞鍏堟牴鎹姛鐜囧拰鐢靛帇锛岃绠楃數娴佸己搴︼紝鍐嶆牴鎹數娴佸己搴﹂夋嫨鐢电紗鎴潰绉傛牴鎹笁鐩稿洓绾垮埗鍔熺巼璁＄畻鍏紡锛歅=鈭3UIcosb锛坈osb琛ㄧず鍔熺巼鍥犳暟锛屼竴鑸彇鍊0.85锛塈=P梅锛堚垰3Ucosb锛=210000梅锛1.732脳380脳0.85锛=375.378锛圓锛夋牴鎹畨鍏ㄨ浇娴侀噺琛紝鏌...
绛旓細380浼鍔ㄥ姏璁惧锛岀數娴両=棰濆畾鍔熺巼P/鏍瑰彿3涔樹互绾跨數鍘婾涔樹互鍔熺巼鍥犳暟COS鐩镐篃灏辨槸鐢垫祦锛濆姛鐜/380/鏍瑰彿3銆備妇渚嬭鏄庯細15KW鐢靛姩鏈380V銆傚綋鐢鐢电數鍘涓380V鏃讹細P=UICOS蠁/1.72锛 姝ゆ椂鐢垫祦涓猴細I=15KW/380V/0.83(COS蠁,鍔熺巼鍥犳暟/1.72x1000=27.7A.(绾跨數娴侊級銆備氦娴佺數娴佷笌鍔熺巼鐨勫叧绯伙細鍗曠浉锛欼=P/220锛 ...
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