S
SuperChickenBBB
Guest
Does anyone know if all MEGGER resistance/isolation/insulation testers
current limited? I assume not, but can anyone give examples?
current limited? I assume not, but can anyone give examples?
Navigation
Install the app
How to install the app on iOS
Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
More options
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an alternative browser.
You should upgrade or use an alternative browser.
D
Don Young
Guest
All the ones I have seen are current limited. Testing insulation with
unlimited current available would almost surely damage the insulation since
any leakage would heat the path, thus increasing the leakage, thus
increasing the heat, thus increasing the leakage, etc., etc..
Don Young
"SuperChickenBBB" <matt@minkirri.apana.org.au> wrote in message
news:38266cf0.0404141758.5b397f25@posting.google.com...
unlimited current available would almost surely damage the insulation since
any leakage would heat the path, thus increasing the leakage, thus
increasing the heat, thus increasing the leakage, etc., etc..
Don Young
"SuperChickenBBB" <matt@minkirri.apana.org.au> wrote in message
news:38266cf0.0404141758.5b397f25@posting.google.com...
Does anyone know if all MEGGER resistance/isolation/insulation testers
current limited? I assume not, but can anyone give examples?
S
SuperChickenBBB
Guest
Any idea of what typical current limits might be? 2ma-25ma? more?
"Don Young" <NotMe@NoneSuch.com> wrote in message news:<107s5t944tc740f@corp.supernews.com>...
"Don Young" <NotMe@NoneSuch.com> wrote in message news:<107s5t944tc740f@corp.supernews.com>...
All the ones I have seen are current limited. Testing insulation with
unlimited current available would almost surely damage the insulation since
any leakage would heat the path, thus increasing the leakage, thus
increasing the heat, thus increasing the leakage, etc., etc..
Don Young
"SuperChickenBBB" <matt@minkirri.apana.org.au> wrote in message
news:38266cf0.0404141758.5b397f25@posting.google.com...
Does anyone know if all MEGGER resistance/isolation/insulation testers
current limited? I assume not, but can anyone give examples?
D
Don Young
Guest
It has been quite a while since I have calibrated any of these but I am
pretty sure that microamperes to a few milliamperes is typical. You can
check it by connecting an ammeter across the test leads. You might find some
specs on the internet by looking for "Biddle" which was one of the original
manufacturers and owns the trademark "Megger".
Don Young
"SuperChickenBBB" <matt@minkirri.apana.org.au> wrote in message
news:38266cf0.0404151823.6b98af58@posting.google.com...
pretty sure that microamperes to a few milliamperes is typical. You can
check it by connecting an ammeter across the test leads. You might find some
specs on the internet by looking for "Biddle" which was one of the original
manufacturers and owns the trademark "Megger".
Don Young
"SuperChickenBBB" <matt@minkirri.apana.org.au> wrote in message
news:38266cf0.0404151823.6b98af58@posting.google.com...
Any idea of what typical current limits might be? 2ma-25ma? more?
"Don Young" <NotMe@NoneSuch.com> wrote in message
news:<107s5t944tc740f@corp.supernews.com>...
All the ones I have seen are current limited. Testing insulation with
unlimited current available would almost surely damage the insulation
since
any leakage would heat the path, thus increasing the leakage, thus
increasing the heat, thus increasing the leakage, etc., etc..
Don Young
"SuperChickenBBB" <matt@minkirri.apana.org.au> wrote in message
news:38266cf0.0404141758.5b397f25@posting.google.com...
Does anyone know if all MEGGER resistance/isolation/insulation testers
current limited? I assume not, but can anyone give examples?