Insulation resistance test on a ring final circuit

[mak]

What makes you think you wont get a belt from an insulation tester probably set at 500V dc, put it another way don't grab hold of the IR test leads when Applying the voltage, did you not cover Potential Difference and Current flow during your training?

Maybe I did or maybe the training these days is rubbish. I guess my question is how big is the current while performing the test, if it's not considered to be a live test then the current must be very little...

 

[Pete999]

Maybe I did or maybe the training these days is rubbish. I guess my question is how big is the current while performing the test, if it's not considered to be a live test then the current must be very little...

Enough to make you jump and drop things.
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Understanding Insulation Resistance Testing

How is IR testing done, in view of the fact that at least 80% of electrical maintenance and testing involves evaluating insulation integrity?

www.ecmweb.com

 

[DPG]

It's a dead test because the circuit being tested is not energised when the tester is connected. Yes, the yesterday itself puts a voltage across the conductors, but the system does not.

 

[Pete999]

The Basics of Insulation Resistance Testing

How significant is insulation resistance testing? Since 80% of electrical maintenance and testing involves evaluating insulation integrity, the answer is "very important."

www.ecmweb.com

This may help you understandhttp://www.-----------.co.uk/Inspection-and-Testing-Insulation-Resistance-Test.php
As may this site

 

[ipf]

It's a dead test because the circuit being tested is not energised when the tester is connected. Yes, the yesterday itself puts a voltage across the conductors, but the system does not.

Yesterday.....is that what you've christened your IR tester?

 

[DPG]

Yesterday.....is that what you've christened your IR tester?

Blinking flip! And it's too late to edit it now.

 

[ipf]

Blinking flip! And it's too late to edit it now.

Don't worry, it seems IR dead testing is all in the past anyway.....

 

[Pete999]

Maybe I did or maybe the training these days is rubbish. I guess my question is how big is the current while performing the test, if it's not considered to be a live test then the current must be very little...

Yes that's plain to see.

 

[Mark Wright]

500v/1MΩ minimum how many amps is that?

 

[mak]

Blinking flip! And it's too late to edit it now.

It has a "tester" sound to it.