22kwã380V
ä¸ç¸çµæºç论ä¸ç
é¢å®çµæµæ¯33.4Aï¼å æ¤éè¦ç¨40Aå以ä¸çæè·¯å¨ã
æ个计ç®å
¬å¼ï¼è´è½½=çµæµÃçµåï¼0.22,0.38.....ï¼Ãæ ¹å·3ï¼1.732ï¼
å æ¤è¿éçµæµçç论å¼=22÷0.38÷1.732=33.4ï¼Aï¼
å°åæè·¯å¨ççµæµç级ä¸è¬æ¯6A,10A,16A,20A,25A,32A,40A,50A,63Açï¼å æ¤å¯éæ©40Aè¿ä¸è§æ ¼ã
并ä¸ï¼ç±äºæ¯å¸¦çµæºï¼å æ¤æè·¯å¨éè¦éæ©ç¨äºçµæºä¿æ¤çDåè±æ£ï¼å³è¯¥æè·¯å¨å¯éæ©D40Açï¼ä¸ºä¿é©èµ·è§ï¼å¯éæ©D50Aæè
D63Açã建议ç¨D50Aï¼æ¢æ»¡è¶³äºçµæµå¤§å°çè¦æ±ï¼åä¸å¤±çµæ度ï¼ç¨D63Açè¯çµæµå¤§å°è½ç¶æ»¡è¶³ï¼ä½éä½äºæè·¯å¨å¯¹çµæµæåºåè±æ£è½åï¼å¹¶ä¸ä»·æ ¼ç¸å¯¹D50Aä¹æ´é«ã