fuse Characteristic

I want to know that the fuse Characteristic is general standard(e.g.
IEC or IEEE) or each company can define a trip curve .
Reply to
mansoor
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It depends. For precise coordination work you always get the time-current curves from the manufacturer, but fuses built to industry standards have to meet certain minimums. For example medium voltage E-rated fuses have to carry a certain amount of overcurrent for a specified minimum time. On the other hand that little 1 A fuse soldered to the PCB of a hard drive may have any characteristic the manufacturer desired.
Bill
( Suggest browsing the Littlefuse and Buss Web sites, you'll find a large amount of data on fuse time-current characteristics)
Reply to
Bill Shymanski
You also have to be careful as some UL marked have restriction on their use when you check the UL web site.
BillB
Reply to
BillB
Standard to a point.
All fast acting fuses are fast acting,etc. Trying to compare a fast acting fuse to a time delay is a mute point.
Trying to compare a fast acting fuse between manufactures is doable. But not always easy.
Each company will have a slightly different curve for each product. I seldom get into situations where the very subtle nuances are needed.
Reply to
SQLit
Uzytkownik "mansoor" napisal w wiadomosci news: snipped-for-privacy@g44g2000cwa.googlegroups.com...
Every factory has to made fuses which characteristic corresponding to standards IEC +/- few percent.
Tom
Reply to
Carrax

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