| PEE / PH or gas
injected is a new method to make a dielectric. Unicavi
has been the first italian manufacturer to adopt and
develop this new extrusion method that is also called
PHYSICAL PROCESS. The most important difference between
this new method and the traditional one called chemical
(PEE) regards the different extrusion process. The PEE
process use a chemical additive whereas the PHYSICAL
process uses an inert gas ( Nitrogen). By using the
traditional method we get a dielectric provided with a
low meccanic robustness and a with a limited time
stabilily of the electrical characteristics.
By using a new method we get the same cable's electrical characteristics, but we have a dielectric with a high meccanic robustness (like a PE dielectric) and with a very good time stability. For a better understanding we will show you two graphics at the bottom of this page. In the two graphics below we will show you the variation of the nominal attenuation at 1750MHz of the two kind of dielectric. ( IEC 68 - 2- 3; 21 days at 40°C and with a 93% relative humidity) |
