(ii) Open hoisting circuit or shorted winding in reversing contactor coil. (iii) Control station contacts not working properly. (iv) Upper limit switch contacts
And in recent years, the practice has become less of a crane repair and safety issue, as the bridges and trolleys of many new cranes are equipped with inverter
The main contactor coils of bridge cranes are cut off due to the power supply has problems, which causes the main contact of the main contactor and the
A DC generator is normally used on portable type cranes where Trolley wires and problem. Measure the coil and if it checks faulty, the magnet should be
Class 6121/31 DC Control. Class 6420/21/22/26/35 AC Control. 17 Million Moves, No Problem. The typical life of a properly maintained EC&M contactor control.
