Sau thời gian sử dụng ACB cấp nguồn cho các tủ tầng tự động cắt ra khỏi lưới.Một số ACB có hiện tượng bị kẹt khi thao tác On/Off .
Phương án sử lý :
Bảo dưỡng cụm truyền động cơ khí.
Kiểm tra cụm tiếp điểm , buồng dập hồ quang và bổ xung mỡ tiếp xúc.
Kiểm tra tình trạng On/Off , cụm charger
Thí nghiệm rơ le , điện trở 1 chiều, điện trở cách điện ACB
Kiểm tra tình trạng hoạt động sau khi bảo dưỡng.
Hình ảnh minh họa:
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