ããæ¯ä¸ç¸å¯¹ç§°è´è·åï¼çµåæ¯380våï¼
å·²ç¥ï¼S=50mm2 P=20kw L=250m COSÏ=0.8 æ±çµæµI=20*1000/1.732*380*0.8=38A
R=Ï*L/S=0.031*250/50=0.155Ω
解ï¼â³P=3I2R=3*38*380.155=671.46W ï¼ 671.46/20*1000ï¼*100=3.36%
â³U%=M/50S=100*250/50*50=25000/2500=10%
çï¼å½è´è·20kw满1å°æ¶æ¶ç论ä¸çº¿æ671.46w=æè3.36%
该线路èèæ«ç«¯çµåæ失10%æ¶è½è´è·100kwã
追é®50å¹³æ¹é线ä¸ç¸4线çµç¼æ¶ç©º.ç»è¿250ç±³.æ大å®å
¨çµæµè½éè¿å¤å¤§çµæµï¼
追çããæ¶ç©ºçµç¼ï¼å®è·µç»éªï¼é线å®å
¨çµæµæ大æ¯å¹³æ¹æ¯«ç±³ä»¥4Aèèã
ï¼ä¸»è¦èèæ£çé®é¢ï¼ç»ç¼å±åçç ´åå¾é¾ç°å¤çï¼