Dried and impregnated cable conductor - what does that mean in IEC 60287?
Dried and impregnated cable conductor - what does that mean in IEC 60287?
(OP)
Hello
IEC 60287-1-1 standard includes a table with coefficients for skin and proximity effects (ks and kp) for different conductors (round, stranded, hollow etc.). These coefficients are influenced also by the condition “Whether dried and impregnated or not”.
Can anyone help me with the explanation of what does this “drying” and “impregnation” mean in practice and how it can affect the skin and proximity effects? A lot of information can be easily found about impregnation of insulation, but I couldn’t find anything about conductors.
Thank you
IEC 60287-1-1 standard includes a table with coefficients for skin and proximity effects (ks and kp) for different conductors (round, stranded, hollow etc.). These coefficients are influenced also by the condition “Whether dried and impregnated or not”.
Can anyone help me with the explanation of what does this “drying” and “impregnation” mean in practice and how it can affect the skin and proximity effects? A lot of information can be easily found about impregnation of insulation, but I couldn’t find anything about conductors.
Thank you






RE: Dried and impregnated cable conductor - what does that mean in IEC 60287?
For instance:
http://www.nexans.no/Norway/2007/Underground_power...
http://www.jicable.org/2007/Actes/Session_B8/JIC07...
http://www.jicable.org/TOUT_JICABLE_FIRST_PAGE/201...
RE: Dried and impregnated cable conductor - what does that mean in IEC 60287?
I guess the conductor can be dried in order to get rid of residues of organic materials left over during manufacturing process (but it cannot influence proximity effect). Also I can imagine conductor being lubricated to ensure better electrical contact between strands and to make the conductor more elastic (to alow the strands slide a bit). But again - this alone cannot reduce Kp form 1 to 0.8. It must be something else.
RE: Dried and impregnated cable conductor - what does that mean in IEC 60287?
Another good thing with this amendment is that the long awaited new types of aluminium conductors are added - round solid, round Milliken etc.
With this it seems that the thread can be closed.
RE: Dried and impregnated cable conductor - what does that mean in IEC 60287?