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Participant

Join Date: May 2008
Posts: 3

How to Select Fuses, Contactors and Overload Relays

05/31/2009 10:27 AM

Kindly let us know how to select Fuses, Contactor, Overload Relays for DOL & Star/Delta Starter for different HP/KW Ratings? If any link is available means, pls send the same.

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Join Date: Oct 2008
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#1

Re: How to select Fuses, Contactor, Overload Relays for DOL & Star - Delta Starter

05/31/2009 11:20 AM

been done a million times. look in:
Search all of CR4

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Anonymous Poster
#6
In reply to #1

Re: How to select Fuses, Contactor, Overload Relays for DOL & Star - Delta Starter

08/04/2009 10:52 AM

if u dont knw the answer keep ur mouth shut plzzz

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Guru

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#2

Re: How to select Fuses, Contactor, Overload Relays for DOL & Star - Delta Starter

05/31/2009 8:59 PM

All Electrical Engineer, Electrician and Technician are train and understand to the simplest basic rules of how to select fuse, contactor, over load relays for any electrical apparatus depend upon the power (KW)

Wonder if you are electrician/technician or merely you are just a student taking electrical engineering course and need these information for study.

I do belived that this question was ask before, few weeks ago.

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#3

Re: How to select Fuses, Contactor, Overload Relays for DOL & Star - Delta Starter

06/01/2009 3:33 AM

Why would you be needing this information please? Tell us EXACTLY why as it can also be VERY dangerous to your future health if you are actually going "hands-on" with this info......

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Guru

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#4
In reply to #3

Re: How to select Fuses, Contactor, Overload Relays for DOL & Star - Delta Starter

06/01/2009 3:52 AM

It is true.. It is very dangerous, if you are not an electrician and does not know anything about electricity. There is a lot of factors to consider, when you select these electrical parts for either DOL or Star Delta Starter.

For example, your cable sizes, distance of your load, timer setting, type of overload... if you are using big motor like 240KW, there will be no overload for this big size of motor cable. Of course, we had to use CT for to represent the overload.

Even we can give you all these information but all these information are for basic references only. You cannot use it to construct these starter.

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Management is just like a bunch of Monkey sitting on a tall tree. Some climb to the highest branch and some at the lowest branch. The highest Monkey look down and see a lot of happy faces but the lower Monkey looks up and see nothing but all the....
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Anonymous Poster
#5
In reply to #4

Re: How to select Fuses, Contactor, Overload Relays for DOL & Star - Delta Starter

06/02/2009 3:19 AM

Exactly I want a selection chart for Fuses, Contactor & Overload Relays for Various rating of DOL & Star / Delta Starter.

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Andy Germany (1); Anonymous Poster (2); lyn (1); Simon Wan (2)

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