H.F. Co-Axial Cable

Parashield H.F coaxial cable are generally used in electricity board to connect the coupling units installed in the switch-yard (outdoor) to the powerline carrier communication terminals installed indoor. Cables are armoured suitablly for outdoor use, either for laying in a duct or buried underground. The cable provide signal path to high frequencies in the range 50 to 500 KHz with minimum attenuation.

Cable Type) Conductor
(m.m.))
Dielectric
Material (Spaced))
Dielectric
Dia (m.m))
Shield) Inner) Armouring) Sheath) Overall
diameter
(m.m)
75 Ohms 1/ 1.22 ATC PE 5.20 ATC PVC G.I Wire Grey PVC 13.00
125 Ohms 1/ 0.80 ABC PE 7.60 ATC PVC G.I Wire Grey PVC 16.50
150 Ohms
(balanced)
1/1.40 ABC PE 5.20 ATC PVC/PE G.I Wire Grey PVC 22.00

Electrical Parameters

Cable Type CapacitancePF/meter
75 Ohms 53.0
125 Ohms 34.0
150 Ohms (balanced) 30.0