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Industrial gantry cranes electrical & control device

Jan 14, 2019
(1) Electrical protection
An easy-to-operate main disconnector shall be provided at the entrance of the industrial gantry cranes;
An emergency power-off switch shall be provided on the industrial gantry cranes and the total power supply shall be cut off;
Check the crane power supply and various mechanisms for short-circuit protection, voltage loss protection, zero protection, over-current protection and over-speed and loss-of-magnetic protection for special cranes;
Check the complete effectiveness of protective devices such as electrical interlocks, interlocks, and self-locking;
Check the insulation resistance of the electrical circuit, whether the grounding of the electrical equipment and the grounding resistance of the metal structure meet the requirements;
All metal equipment on the industial gantry cranes shall have reliable grounding (zero) protection, such as the normal uncharged metal casing, transformer core and metal isolation layer, threaded metal pipe groove, cable metal sheath and other metal structures.
(2) Control device
It should be checked whether the electrical accessories are complete, whether the mechanical fixing is firm, no looseness, no jamming; 
If the power supply cable is aged or exposed or not; the insulating material should be good;
Should no damage and deterioration; 
The bolted contacts, brushes and other joints should be reliable; 
The electrical equipment and electrical components selected on the industrial gantry cranes should be compatible with the power supply and working environment and working conditions;
For the bare wire power supply, check whether the external coloring and indicator settings meet the requirements; for the soft cable power supply, check whether the cable is properly retracted;
Check the collector cable for the entire length of the cable without bending, no jamming contact is reliable.
Single girder gantry crane
single girder gantry crane

Double girder gantry crane
double girder gantry crane