Bank of Tubular Heaters Shuts Down

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vkenterprise Active Contributor Join Date: Jun 2008 Posts: 10	Bank of Tubular Heaters Shuts Down 03/18/2009 1:10 AM
	I recently occured with a problem in tubular heater, where in my bank of 50 heaters when idle show meggar( insulation) at infinity, but when the heater bank is switched on after 8 - 10 mins the entire bank shuts down, again when the meggar ( insulation) is checked it shows at infinity. Does any one know why does this problem arise, as i have come across this problem for the first time in my life. Regards Rakesh
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	Pathfinder Tags: electric fault heaters insulation tubular heaters

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harry potter Power-User Join Date: Nov 2008 Location: India Posts: 333 Good Answers: 6	#1 Re: breakdown of tubular heaters 03/18/2009 2:04 AM
	Dear , I have come across this problem many times n past. I would like to share with you ... This is the behaviour of insulation material on the verge of getting faulty. Very principle that resistance of insulating material decreases with rise in temperature.... the cumulative local heating effect in the hot spot at weaked portion of the insulation goes on reducing the dielectric value at localised weaked portion... ultimately after few cycles, permanantly damaging the insulation. In your case, all the 50 heater elements are not faulty. You may locate the faulty tubular heating element by switching ON the heating elements in groups... say 10 at a time, .... you shall immediately locate the group of 10 elements wherein one heating element is on the verge of dyeing. Like wise, you shall locate the faulty element. regards. __________________ Exploring the Science of Electricity
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vkenterprise Active Contributor Join Date: Jun 2008 Posts: 10	#2 In reply to #1 Re: breakdown of tubular heaters 03/18/2009 4:14 AM
	Hi, Thanks for the prompt reply and a solution to my problem, just curious to know where are you located.
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Turbotroll3 Power-User Join Date: Oct 2008 Location: Houston, Texas Posts: 252 Good Answers: 5	#3 In reply to #1 Re: breakdown of tubular heaters 03/19/2009 1:32 PM
	Divide and conquer has been and is a great strategy for things like this. Once in a blue moon (rarely) there will be a situation where the fault current from a large number of units is sufficient to cause a trip when the problem is general degradation of a large number of similar devices. Try Mr. Potter's strategy first but realize that there may be more than one culprit if the problem is not found quickly by using it. Have FUN! TT3 __________________ If the software can detect, compensate, avoid, or correct an anomalous condition in the system, it is, by definition, a software problem-regardless of the root cause. In the long run, for most classes of problems, it is cheaper to fix it in the SW
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Anonymous Poster	#4 In reply to #3 Re: breakdown of tubular heaters 03/21/2009 9:49 AM
	thank you sir Regards Rakesh
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Anonymous Poster (1); harry potter (1); Turbotroll3 (1); vkenterprise (1)

You might be interested in: Industrial Heaters, Inline Heaters, Air Heaters

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