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MainCatalogue of productsWIRES FOR AIR-TRACKS OF TRANSMISSIONSWires are selfbearings isolated for the air-tracks of electricity transmissions -3 31.313638750030:2005

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Wires are selfbearings isolated for the air-tracks of electricity transmissions -3 31.313638750030:2005
-3 wire one-tendon with steel-aluminium (or from an aluminium alloy) tendon with a protective isolation from the embroidered polyethylene
CONSTRUCTION
1. CURRENT IS CONDUCTING WIRES twisted up from round wires from an aluminium alloy, round form, made more the compact. Number wires in a current-conducting tendon, outward diameter current-conducting tendon, the break loading and electric resistance tendon is shown in a table:
Nominal section phase current-conducting tendon, mm² Number wires in the tendon, th. Nominal outward diameter of tendon, mm Break loading of tendon, kN, no less Electric resistance 1 km of phase tendon to the direct current, Om, no more
 
35 7 8 10,3 0,986
50 7 9 14,2 0,720
70 7 10,8 20,6 0,493
95 7 13,0 27,9 0,363
120 19 14,4 35,2 0,288
150 19 16,0 43,4 0,236
 
2. ISOLATION is composition from light-stabilized embroidered polyethylene, black, thickness of isolation 2.3 mm.

APPLICATION DOMAIN
Wire intended for application in the air-tracks of electricity transmission on variable voltage 20 kV nominal frequency 50 Hz.
Primary application domains for the air-tracks of electricity transmission in districts with a temperate, cold climate, in the atmosphere of air of types II industrial and III marine for 1515069.
Pull of wire during a gasket it is recommended to carry out through stocking or special clamp. Efforts, arising up during a pull of wire, must not exceed 35 N on 1 mm² sections are a current-conducting tendon.
Necessary to fasten wires on insulators. Thus effort in a current-conducting tendon must not exceed 30 N on 1 mm² sections current-conducting tendon at the maximal loadings of calculations.
Distance ot a wire to the branches and crown of trees must be no less than 0.5 m.
At the gasket of wires in a fire-dangerous areas application of additional measures of fire-prevention defence is needed, for example, causing a fire-proof coverages.
Nominal section current-conducting tendon, mm² Nominal outward diameter of wire, mm Calculation mass 1 km of wire, kg
 
35 12,6 148
50 13,6 195
70 15,4 276
Nominal section current-conducting tendon, mm² Nominal outward diameter of wire, mm Calculation mass 1 km of wire, kg
 
95 17,6 385
120 19,0 471
150 20,6 554

TECHNICAL DESCRIPTION
Type of climatic execution of wires of , categories of placing 1, 2 and 3 for 1515069
Wires are proof to influence of sun radiation, characterized the high value of integral
closenesses of thermal stream 1120 Vt/m²10%, including closenesses of ultraviolet part of spectrum 68 Vt/m²25%
Wires are proof to the bend at a temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
A gasket and editing of wires must be conducted at an ambient temperature . . . . . . . . . no below 20
Minimum radius of bend of wire at editing and set on supports must be no less than 10 nominal diameters of wire
Specific by volume resistance the isolation of wire at the possible temperature of heating of tendon no less 1 x 1012 msm
A wire is maintained by a test on a passage-way by variable voltage 25 kV frequency 50 Hz.
Wire after self-control in water at a temperature (2010) no less than 10 mines maintains a test variable voltage 4 kV frequency 50 Hz. during 5 mines
A wire is maintained by a test variable voltage 24 kV frequency 50 Hz. during 5 mines
Aggressive variable voltage of isolation of wire after self-control in water at a temperature (205) during 1 ch no less than 24 kV
Possible heating the current-conducting tendon during exploitation must not exceed the followings values:
    at the normal mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
    at a short circuit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250
Possible current of loading of wire, expected at an ambient of 25 temperature, speeds of wind 0,6 m/s and intensities of sun radiation 1000 Vt/m², and also one-second current of short circuit:

Nominal section current-conducting tendon, mm² Possible current of loading, One-second current of short circuit, k
 
35 200 3,2
50 245 4,3
70 310 6,4
Nominal section current-conducting tendon, mm² Possible current of loading, One-second current of short circuit, k
 
95 370 8,6
120 430 11,0
150 485 13,5

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