H.F. CO-AXIAL CABLES
 


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
       
   

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