ACB(Preset Type, Draw out Type) It is a following-technology style ACB with dynamic attribute trustworthiness tremendously improved by adopting digital overcurrent relay built in with higher-precision A/D conversion circuit utilized 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?By Tr?n Hoài