ACB(Preset Kind, Attract out Style) It is a future-generation style ACB with dynamic characteristic dependability significantly improved by adopting electronic overcurrent relay in-built with superior-precision A/D conversion circuit useful for measuring instruments.– T? ??ng kh?i ??ng ho?c d?ng ho?t ??ng ( c?a DG ) khi ngu?n ?i?n có s? c?– ?i