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Problem with Electromagnets at E.O.T Cranes.
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   Problem with Electromagnets at E.O.T Cranes.
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   Author  Topic: Problem with Electromagnets at E.O.T Cranes.  (Read 75 times)
lorrainelambert
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Posts: 7
Problem with Electromagnets at E.O.T Cranes.
 
« on: May 5th, 2014, 3:09am »
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I have checked each and everything at panel, CRD upto the Electromagnets, it is a circular magnets used for filling Transfer Car Trolley with Scrap at Steel Melt Shop, but i have noticed one thing, when i magnetize the magnet it magnetized but when i drop the magnet the DC Contact or of the magnet produces a huge flash with fire. it is also taking 120 Amp instead of 100 amp, the variate along diode also burns out while dropping the scrap means demagnetizing the electromagnet, which circuit i must have to check for this condition.

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ClydeDET
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Re: Problem with Electromagnets at E.O.T Cranes.
 
« Reply #1 on: May 5th, 2014, 10:39pm »
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No idea, sir. But I expect there should be a manual from the manufacturer (shop manual, eh?) that ought to offer complete trouble-shooting instructions. And if not - time to call the maker and yell "HELP!!".

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CHESSIEMIKE
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Re: Problem with Electromagnets at E.O.T Cranes.
 
« Reply #2 on: May 5th, 2014, 11:19pm »
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Sounds like an internal short in the coil(s) that gets worse with the added pressure of the magnet making contact. Make sure the power is off and measure the resistance in the coils and compare to spec. Any coils with too low resistance would be suspect.
CHESSIEMIKE


« Last Edit: May 5th, 2014, 11:20pm by CHESSIEMIKE » Logged


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lorrainelambert
TRAINing
Posts: 7
Re: Problem with Electromagnets at E.O.T Cranes.
 
« Reply #3 on: May 28th, 2014, 5:57am »
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Thank you CHESSIEMIKE

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