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  • Users: robglow
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  1. robglow

    Is a thermal shock sometimes necessary for a Die-Cast Aluminium IM Rotor??

    We've recently had some of our Die-Cast Aluminium rotors pre-commissioned by another company. After doing a Motor Current Signature Analysis (MCSA) they found an imbalance in one of the rotor bars. The other rotors that passed the test, were subjected to both light and heavy loads. This rotor...
  2. robglow

    Can someone please identify this type of switch symbol for me?

    I am currently designing the retrofit for an old panel. I've never seen this symbol for a switch before and cannot see what state it is in from the picture. Can anyone help on this? http://files.engineering.com/getfile.aspx?folder=13a04dda-4e28-4e87-b46a-4cbb3b05476f&file=Untitled.png

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