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tomas_1980
Posted: Wed Jan 16, 2008 9:52 pm
Guest
pls i want to know the resistivity of the epoxy and if this value
depend on the thickness layer of the epoxy. as this value may help me
in the calcultion and design for earthing for hv substation
amdx
Posted: Thu Jan 17, 2008 3:26 pm
Guest
"tomas_1980" <perfetto2@gmail.com> wrote in message
news:d47cbe6a-35f1-43dd-a898-0bdc0decd9b1@k2g2000hse.googlegroups.com...
Quote:
pls i want to know the resistivity of the epoxy and if this value
depend on the thickness layer of the epoxy. as this value may help me
in the calcultion and design for earthing for hv substation

Many types of epoxy......
Mark Thorson
Posted: Fri Jan 18, 2008 4:48 pm
Guest
amdx wrote:
Quote:

"tomas_1980" <perfetto2@gmail.com> wrote in message
news:d47cbe6a-35f1-43dd-a898-0bdc0decd9b1@k2g2000hse.googlegroups.com...
pls i want to know the resistivity of the epoxy and if this value
depend on the thickness layer of the epoxy. as this value may help me
in the calcultion and design for earthing for hv substation

Many types of epoxy......

Many types of filler, which is probably more relevant.
tomas_1980
Posted: Mon Jan 21, 2008 11:16 pm
Guest
On Jan 19, 7:48 am, Mark Thorson <nos...@sonic.net> wrote:
Quote:
amdx wrote:

"tomas_1980" <perfet...@gmail.com> wrote in message
news:d47cbe6a-35f1-43dd-a898-0bdc0decd9b1@k2g2000hse.googlegroups.com...
pls i want to know the resistivity of the epoxy and if this value
depend on the thickness layer of the epoxy. as this value may help me
in the calcultion and design for earthing for hv substation

    Many types of epoxy......

Many types of filler, which is probably more relevant.

what do u mean . suppose any type and give me the data
dvt
Posted: Tue Jan 22, 2008 10:14 am
Guest
tomas_1980 wrote:
Quote:
On Jan 19, 7:48 am, Mark Thorson <nos...@sonic.net> wrote:
amdx wrote:

"tomas_1980" <perfet...@gmail.com> wrote in message
news:d47cbe6a-35f1-43dd-a898-0bdc0decd9b1@k2g2000hse.googlegroups.com...
pls i want to know the resistivity of the epoxy and if this value
depend on the thickness layer of the epoxy. as this value may help me
in the calcultion and design for earthing for hv substation
Many types of epoxy......
Many types of filler, which is probably more relevant.

what do u mean . suppose any type and give me the data

If you use silver as the filler, the resistivity is very low (i.e.
conductive epoxy). If you use a nonconducting filler, the resistivity of
the epoxy is very high. Just about anything between a very good
conductor and a very good insulator is possible. So you'll need a bit
more information than simply "epoxy" to get an estimate of its resistivity.

--
Dave
dvt at psu dot edu
 
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