ACB(Preset Form, Attract out Kind) This can be a future-technology sort ACB with dynamic characteristic trustworthiness enormously improved by adopting digital overcurrent relay built-in with substantial-precision A/D conversion circuit utilized for measuring devices.– T? ??ng kh?i ??ng ho?c d?ng ho?t ??ng ( c?a DG ) khi ngu?n ?i?n có s? c?B? ?i