ä¸ç¸ååå¨çå·¥ä½åçæ¯ç¨çµç£æåºåçå·¥ä½çãååå¨æ两ç»çº¿åãå级线åå次级线åã次级线åå¨å级线åå¤è¾¹ãå½å级线åéä¸äº¤æµçµæ¶ï¼ååå¨éè¯äº§ç交åç£åºï¼æ¬¡çº§çº¿å就产çæåºçµå¨å¿ãååå¨ç线åçåæ°æ¯çäºçµåæ¯ã
ä¾å¦ï¼å级线åæ¯500åï¼æ¬¡çº§çº¿åæ¯250åï¼å级éä¸220V交æµçµï¼æ¬¡çº§çµåå°±æ¯110Vãååå¨è½éåä¹è½ååãå¦æå级线åæ¯æ¬¡çº§çº¿ååæ°å°å°±æ¯ååååå¨,å¯å°ä½çµåå为é«çµåã
ååå¨---å©ç¨çµç£æåºåçï¼ä»ä¸ä¸ªçµè·¯åå¦ä¸ä¸ªçµè·¯ä¼ éçµè½æä¼ è¾ä¿¡å·çä¸ç§çµå¨æ¯çµè½ä¼ éæä½ä¸ºä¿¡å·ä¼ è¾çéè¦å 件
1.ååå¨ ---- éæ¢ççµç£è£ ç½®
ååå¨å¯å°ä¸ç§çµåç交æµçµè½åæ¢ä¸ºåé¢ççå¦ä¸ç§çµåç交æµçµè½
çµåå¨ç主è¦é¨ä»¶æ¯ä¸ä¸ªéå¿åå¥å¨éå¿ä¸ç两个ç»ç»ã
ååå¨åçå¾ï¼å¾3.1.2ï¼ã
ä¸çµæºç¸è¿ç线åï¼æ¥æ¶äº¤æµçµè½ï¼ç§°ä¸ºä¸æ¬¡ç»ç»
ä¸è´è½½ç¸è¿ç线åï¼éåºäº¤æµçµè½ï¼ç§°ä¸ºäºæ¬¡ç»ç»
设
ä¸æ¬¡ç»ç»ç äºæ¬¡ç»ç»ç
çµåç¸é U1 çµåç¸é U2
çµæµç¸é I1 çµæµç¸é I2
çµå¨å¿ç¸é E1 çµå¨å¿ç¸é E2
åæ° N1 åæ° N2
åæ¶äº¤é¾ä¸æ¬¡ï¼äºæ¬¡ç»ç»çç£ééçç¸é