31.3-31850229-002-2002
60502-1 (1998-11)

 

Application

Cables are designated for communication organization and passing the information in underground mine workings, which are characterized by high humidity, explosive atmosphere, in telephone nets with nominal alternating voltage 225 V and 145 V and direct voltage 375 V and 200 V on the surface under the environment temperature from 40 degrees below zero till 50 degrees above zero.

For laying in mines on horizontal or oblique workings and for external cable laying on the surface under conditions of fixed joining up and joining up bends under the effect of grease oils and with diesel fuel, with high probability of mechanical defects (, ).

 

Construction

Cable leads
Made from copper soft round bar diameter 0.77 mm.

Insulation
Solid, colorful polyethylene.

Stranded cable core
Made from pairs, quads, buns.

Wrapping
Polyethylene terephthalate strip, PVC or polyethylene.

Screen
Made from aluminum foil, under the screen there laid copper tinned contact wire.

Internal clad
Made from polyethylene.

() bandage
Made from PVC*.

type serving
— armature — type PVC cushion ()
— armature — steel strip
— PVC* jacket

() type serving
— armature — steel galvanized wire diameter 1.88 mm; 2.0 mm or 2.2 mm
— winding — by PVC strips and thermally bounded flat
— PVC* jacket

* PVC for the bandage and jacket is applied with oxygenic index not less than 27%.

Technical characteristics

Parameter Current frequency, khz Normalized value
Electric resistance of cable leads, counted in 1 km of length and temperature 20C, ohm, not more Direct 48
Electric resistance of leads insulation, counted in the 1 km of length and temperature 20C, milliohm, not less Direct 5000
Mutual capacitance, nanofarad for 1 km, not more:
— in pair ( for pair splicing)
— in pair ( for quartile splicing)
0.8 or 1  
60
55
Cable damp coefficient counted in 1 km of length and temperature 20C, decibel, not more 0.8 1

Elevated environment temperature is 50 degrees above zero.

Elevated air humidity under the temperature till 35C — 98%.

Decreased environment temperature
— in fixed joining up till 40 degrees below zero
— under conditions of joining up bends, the radius is equal not less than 10-multiple cable external diameter and not less than 15-multiple , cables external diameter – till 10 degrees below zero.

In case of single laying cables should not spread combustion.

Cable factory length should be not less than 400 m.

Minimal service life is 10 years since the moment of cable manufacturing.

Warranty period is 3 years since the cable breaking – in.


Construction data on standard agents

Cable leads nominal number and diameter armature 1.8 mm armature 2.0 mm armature 2.2 mm
Estimated bulk 1 km cable, kg Diameter Estimated bulk 1 km cable, kg Diameter Estimated bulk 1 km cable, kg Diameter
Estimated Maximum Estimated Maximum Estimated Maximum
5×2×0.7
10×2×0.7
20×2×0.7 1035.5 26.20 29.8 1351.4 26.90 29.8 1412.4 27.3 29.8
30×2×0.7 1522.6 29.22 33.5 1632.0 29.62 33.5 1688.9 30.02 33.5
50×2×0.7 2031.9 34.20 39.0 2108.8 34.60 39.0 2187.3 35.00 39.0
100×2×0.7 3205.3 46.18 52.5 3364.1 46.58 52.5 3471.1 46.98 52.5
10×2×0.7(5×4×0.7)
20×2×0.7(10×4×0.7) 1167.2 24.57 29.8 1239.3 24.97 29.8 1326.4 25.37 29.8
30×2×0.7(15×4×0.7) 1462.5 28.12 33.5 1563.3 28.52 33.5 1651.6 28.92 33.5
50×2×0.7(25×4×0.7) 1999.4 33.67 39.0 2115.9 34.07 39.0 2221.4 34.47 39.0
100×2×0.7(50×4×0.7) 2937.1 41.71 52.5 3072.7 42.11 52.5 3228.4 42.51 52.5