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BARE CONDUCTORS

Bare conductors for overhead power lines

TCG bare conductors for overhead power lines (OHL) from low to high voltage. 8 types are produced: the classic A (Al), AS (Al+steel), M (Cu) and MG (flexible Cu) to GOST 839-2019, as well as new-generation conductors — the heat-resistant AT1S and AT3S (Al-Zr alloy, continuously up to +150 and +210°C) and AERO-Z (AACSRZ and AAACZ — Z-shaped wires, reduced sag and losses). From 0.4 kV distribution networks to 750 kV trunk overhead lines.

Purpose Overhead power lines
Conductors Al, Cu, AlSt, AlZr
Insulation None
Cross-sections 1.5 – 1000 mm²
A Aluminium

A

GOST 839-2019
Bare conductor made of aluminium wires for overhead lines
Conductor Aluminium
Cross-section 10 – 750 mm²
Continuous t° +90°C
Standard GOST 839-2019
Product range:
A-10 A-16 A-25 A-35 A-50 A-70 A-95 A-120 A-150 A-185 A-240 A-300 A-400 A-500 A-600 A-750
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AS Trunk line

AS

GOST 839-2019
Bare aluminium conductor steel-reinforced (ACSR) for overhead lines
Conductor Al + steel
Cross-section 10 – 1000 mm²
Continuous t° +70°C
Standard GOST 839-2019
Product range:
AS-10/1.8 AS-16/2.7 AS-25/4.2 AS-35/6.2 AS-50/8.0 AS-70/11 AS-95/16 AS-120/19 AS-150/19 AS-150/24 AS-185/24 AS-185/29 AS-240/32 AS-300/39 AS-400/51 AS-500/64
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M Copper

M

GOST 839-2019
Bare copper conductor for busbars and overhead contact lines
Conductor Copper
Cross-section 10 – 400 mm²
Construction Solid / stranded
Standard GOST 839-2019
Product range:
M-10 M-16 M-25 M-35 M-50 M-70 M-95 M-120 M-150 M-185 M-240 M-300 M-400
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MG Flexible

MG

GOST 839-2019
Bare flexible copper wire for movable connections
Conductor Copper, flexible
Cross-section 1.5 – 400 mm²
Flexibility class 5 per GOST 22483
Standard GOST 22483
Product range:
MG-1.5 MG-2.5 MG-4 MG-6 MG-10 MG-16 MG-25 MG-35 MG-50 MG-70 MG-95 MG-120 MG-150 MG-185 MG-240 MG-300 MG-400
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AT3S Heat-resistant

AT3S

GOST 839-2019
New-generation heat-resistant steel-reinforced aluminium conductor
Conductor Al-Zr alloy + steel
Continuous t° +210°C / +240°C (AT3S)
Service life 45 years
Advantage +30-40% current vs AS
Product range:
AT1S AT1SP AT3S-300/39 AT3SP-300/39 AT3S-500/64 AT3SP-500/64
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AACSRZ AERO-Z

AACSRZ

GOST 839-2019
New-generation conductor with Z-shaped wires in the outer layers
Construction Z-shaped wires in the outer layers
Material Al alloy 6201 (+ steel for AACSRZ)
Continuous t° +90°C
Advantage Less sag, losses and ice load
Product range:
AAACZ AACSRZ-527 AACSRZ-649 AERO-Z
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AT1S Heat-resistant

AT1S

TCG TS / EN 50183
Heat-resistant aluminium conductor steel-reinforced for the medium temperature range
Conductor Al-Zr alloy (type 1) + steel
Continuous t° +150°C / +180°C (emergency)
Service life 45 years
Advantage +15-25% current vs AS
Product range:
AT1S AT1SP AT1S-300/39 AT1SP-300/39 AT1S-500/64 AT1SP-500/64
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AAACZ AERO-Z • no steel

AAACZ

TCG TS / IEC 62219
Conductor made of Z-shaped aluminium alloy wires, without a steel core
Construction Z-shaped wires
Material 6201 Al alloy only
Continuous t° +90°C
Feature No steel core
Product range:
AAACZ-330 AAACZ-455 AAACZ-570 AAACZ-680
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COMPARISON OF BARE CONDUCTOR TYPES

ParameterAASMMGAT3SAERO-Z
ApplicationOHL in temperate and cold climatesTrunk OHL of all classesBusbars, catenary systemsFlexible connectionsHigh-load OHLNew-generation trunk OHL
MaterialAl wiresAl wires + steel coreCuCu, flexibleAl-Zr alloy + steel coreZ-profile Al alloy 6201
Cross-sections, mm²10–75010–100010–4001.5–40070–800410–650 (on request)
Continuous conductor t°+90°C+70°C+70°C+70°C+210°C (+240°C in emergency mode)+90°C
Service life30+ years30+ years30+ years30+ years45 years45 years
AdvantageLight, low-costStrong, for long spansHigh electrical conductivityFlexibleIncreased current-carrying capacityLess sag, lower losses, less ice load
StandardGOST 839-2019GOST 839-2019GOST 839-2019GOST 22483 class 5TCG TS / EN 50183TCG TS / IEC 62219

SEE ALSO

Copper wire and wire rod Cu-ETP, MM, MT, KMO — 20+ items
Photovoltaic - SOLAR H1Z2Z2-K — 10+ items
Lightning protection and optical fibre GTK, OKGT-Ts, OKGT-Ts-A, OKGT-S — 20+ items

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