Repairing Giant A-Shaped Portal Crane in an International Company

I going back to Bangi to delivery an Motor Inverter which is rushing for a replacement in SGL CARBON Company from a supplier, KVC SDN BHD. This is well-know brand,Allen Bradley motor inverter which is a programmable logic controller.


AC DRIVE POWERFLEX 400, 380-480V, 3PH, 10.5A, 4 KW, IP20, FRAME C.











In the afternoon, an electrical engineer, a technician and me go to SGL to diagnose the problems of whole electrical system of the A-shaped crane that fail or break down.

an example of the look of a double girder A-shape crane



My visitor pass with strict bar code.



The actual A-shaped portal crane is very high and we need to climb up to the main control box with its stair.





The View at the top of crane structure.





Control box ventilation system


Doing the setting and testing when finish the replacement work of motor inverter.






we go down again in order to do the testing via the control pendant below the crane system.







The repairing work is done. Then off the lights in side the big control box and close its casing.