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  1. General Electrical Discussion
    Hi guys can anyone help out as to what might be causing this on an overhead?
  2. Canadian Electrical Forum
    Hi All, I am designing overhead crane control panels for both bridge and Trolley motor control, and I am trained to using table 1 and 2 for cable sizing following continuous and intermittent use calculations, but for cranes you have a dedicated T58 which doesn't explain whether it takes account...
  3. Industrial Electrical Forum
    Hello, I Have a Street Brand 40 Ton overhead crane(2 hoists @ 20T each). The main contactor just starting chattering this morning but only when i use both hoists at the same time going up and down. Input voltage to the coil remains at 120V while chattering and if you manually hold in the...
  4. General Electrical Discussion
    My subcontractor use ABB ACS580 instead of ACS880. They argue that can program to control crane with it. Load capacity and motor power is no problem here, but the purpose of inverter I concern here. Is there any advice?
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