31.3-31850229-004-2003
60502-1 (1998-11)

 

Application

This cable is designated for provision with telephone connection in mines and service under the temperature from 40C below zero till 50C above zero and relative humidity 98% and temperature 35C.
One-pair and one — quad cables are manufactured.

 

Construction

Cable leads
Round copper solid

Insulation
Polyethylene.
Insulated leads are stranded into pair or quad.

Load — carrying element
Line consisting of stranded seven or four steel rope wires is laid parallel the pair (quad).

Shell
PVC with oxygen index not less than 27%.

Technical characteristics

Cable leads electric resistance counted in 1 km of length and temperature 20C, not more 65 ohm.

Insulation electric resistance counted in 1 km of length and temperature 20C, not less 3000 MOhm.

Mutual capacitance counted in 1 km of length, nanofarad, not more
— for pair 60
— for quad 55
Testing voltage is 1000 V of the frequency 50Hz.

Band radius during the joining –up and laying not more than 15 external diameters.

Breaking tension of line in cable not less than 880 N (90 kilogram-force).

Factory length is not less than 400m.

Cable doesn't spread combustion during single laying.

Minimal service life is not less than 5 years.

Warranty period is 1 year since the breaking — in.


Construction data on standard agents

Nominal external diameter, mm Estimated bulk of 1 km cable, kg
120,64
5.7×10 64
140,64
6.3×10.5 80.1