ACB(Preset Sort, Attract out Kind) This is a future-era sort ACB with dynamic attribute dependability enormously improved by adopting electronic overcurrent relay built in with significant-precision A/D conversion circuit used 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?– ?i?u ch?nh th?i gian