The main failure mode in contactors is electromagnet fatigue due to the formation of foucault s currents
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Question:
The main failure mode in contactors is electromagnet fatigue due to the
formation of foucaults currents and the strong mechanical impact when
opening and closing the circuits. To mitigate this failure mode, the electromagnet evolved into a laminated design, as shown below. In this particular
case, the electromagnet core is composed of steel sheets each with a thickness of ts pm mm and the bracket for the assembled electromagnet
core has design thickness of tbc pm mmA What percentage of
assemblies core corebracket will have a clearance less than mmB
What percentage of assemblies will have a clearance less than zero not fit
C If no more than of assemblies should have a clearance less than
mm to what value does the corebracket size has to be increased if all other
dimensions and tolerances remain the same?
Related Book For
Physics
ISBN: 978-0077339685
2nd edition
Authors: Alan Giambattista, Betty Richardson, Robert Richardson
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