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Bare Aluminium Conductors for Overhead Power Lines

Group: Bare Aluminium Conductors

GOST 839-80

1. Application

The conductors are intended for power transmission in over-head power lines for all macroclimatic regions of temperate climate except the regions of dry tropical and humid tropical climate.
Aluminium alloy conductors with neutral grease are used at sea coasts and coastlines of salt lakes, in industrial areas and areas of salinized sands, on land and on the sea of all macroclimate regions.

2. Construction

The conductors are stranded of aluminium wires. They can be filled with neutral grease.

Materials:
— aluminium, purity 99,5; 99,7%;
— neutral grease of high heating resistance.

 

3. Service and operating instructions

Under operation allowable continuous conductor temperature should not exceed 90°C.

 

4. Main characteristics of materials:

Parameters

Aluminium wire

Grease

Specific electrical DC resistance at 20° C,Ohm·mm2/m, not more

0,028264 -

Temperature coefficient of resistance at constant mass per °C

0,00403 -

Ultimate breaking strength, MPa (N/mm2)

160-195 -

Dropping point of grease, °C, not less

- 105




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