5 common reasons and treatment methods for high-voltage circuit breakers that cannot be closed:

(1). Gear stuck or mounting position, properly adjusted. Respond transmission mechanism for maintenance, proper installation and adjustment of the transmission mechanism.

(2). Auxiliary contact switch contact failure. Deal with auxiliary switch for inspection and repair.

(3). An internal closing coil or copper sleeve core is not smooth matte, Jam phenomenon occurs. Deal with the interior of the copper sleeve and the closing coil core for grinding.

(4). Closing loop is broken or the fuse is blown or poor contact. Closing the loop on the break to repair, replace fuse link.

(5). Core jack loosening position to change. Should overhaul, adjust the core mandrel.