Megger test

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himooo

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please i have the megger test equipment and I want to know how to measure the insulation resistance and I want to know - the megger tesr= insulation resistance test or not=
 
mdshunk

mdshunk

Senior Member
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Right here.
You sure want to learn a bunch of stuff.

One word of caution... only learn so much at a time or you head will explode. I've seen it happen to many a good man.
 
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steveng

Senior Member
Location
Texas
Yep, marc

Yep, marc

mdshunk said:
You sure want to learn a bunch of stuff.

One word of caution... only learn so much at a time or you head will explode. I've seen it happen to many a good man.
Click to expand...

you must be a hoot to work with!:D
 
zog

zog

Senior Member
Location
Charlotte, NC
himooo said:
please i have the megger test equipment and I want to know how to measure the insulation resistance and I want to know - the megger tesr= insulation resistance test or not=
Click to expand...

What are you testing?
 
76nemo

76nemo

Senior Member
Location
Ogdensburg, NY
The OP's question is way too vague. Can you be more specific? A megger isn't something you can buy and automatically start rattling off answers to questions otherwise unknown. Insulation testing isn't always cut and dry.

Ask a couple seasoned electricians about PI/DAR testing and see how far you get. If you'd like detailed answers, please give detailed questions.

We're here to help, the more detail you can give, the better we can answer your questions;)
 
roger

roger

Moderator
Staff member
Location
Fl
Occupation
Retired Electrician
wptski said:
I've seen this link posted a few times here. It's a PDF version of a book that Biddle/Megger sells or if you join their site for free, you can download from their library. My question is, should the link be posted if Biddle/Megger is selling the book??
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If it is available online it is fair game.

UL directories as well as NFPA documents are also for sale but they can be accessed for free on the web.

Here's the White Book

Roger
 
76nemo

76nemo

Senior Member
Location
Ogdensburg, NY
These replies are NOT helping or answering the OP's question. Can you be a little more specific himooo? Just like any other forum, humor is allowed, and we all need it from time to time.

Let's be serious, you be more exact, and go from there.
 
electricalperson

electricalperson

Senior Member
Location
massachusetts
himooo said:
I am testing cables nad bus bars
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a stitch in time has a table inside the book. you go buy the equipment rating or rating of the cable. on romex, its rated for 600v so i set the megger to 1000v. if something is rated 250v i set the megger to 500v. usually any cable under 100megaohms is no good. theres also a rule of thumb of one megaohm per 1000 volts of rated voltage for equipment. i learned this from a combination of brian john, mdshunk and books (a stitch in time and insulation resistance testing by biddle megger,, printed in 1954 :D) usually any testing book will talk in detail about insulation testing. if you happen to buy one you should experiment with it using pieces of romex, conduit with thhn, bx, and older cables just to see what you get. good luck
 
76nemo

76nemo

Senior Member
Location
Ogdensburg, NY
Some more info.....

Some more info.....

Would you like some more applications and studies?

http://us.fluke.com/usen/support/ap...FlukeProducts)&parent=APP_NOTES(FlukeProducts)

There you go, have at it.

"A Stitch In Time" is a good reference point. A reference point that will get you so far. I have more saved in my favorites when you finish with these.

Insulation testing isn't always cut and dry, but you have to start from somewhere.
 
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