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Diameter-Extended ACSR

Diameter-Extended ACSR

Diameter-Extended ACSR

Description
Based on conventional ACSR structure, the diameter-extended ACSR is made through adding some inner strands or using the nonmetal wires to replace some inner strands according to a certain rule. The diameter of this ACSR is then extended. Enlarging the external diameter of the conductor via sparse winding of aluminum wires can effectively reduce the electric field intensity and corona discharge on the conductor surface. This enables the diameter-extended ACSR to have reduced operation noise and smaller radio interference. Compared to the conventional ACSR, the product is light weight and can reduce the possibility of creep elongation and conductor deformation after installation. Meeting the requirements of transmission capacity and environmental protection, our diameter-extended ACSR can also lower the construction cost. The allowable temperature is 80. The product has the advantages of high strength, anticorrosion and long service life. It can improve the quality connection of T joint.

Application
The diameter-extended ACSR is used in flexible busbar for 500kV power substations. It can be used at high altitudes. The K272-2 diameter-extended ACSR was used for the 330kV Liutianguan (Liujiaxia-Tianshui City-Guanzhong Area) power transmission line in 1972. Later, it had further application for the 750kV power transmission and transformation demonstration project (Guanting Village-West Lanzhou City).

Technical Specifications

Nominal cross section area		mm2	630	800	1000	1250	1400
Outside diameter		mm	48	49	51	52	51
Calculated cross section area	Alum	mm2	535.43	813.42	1001.40	1259.14	1399.60
	Steel	mm2	152.81	152.81	152.81	152.81	134.30
	Total	mm2	788.24	966.23	1154.21	1411.95	1533.90
Number of wire/ Diameter	Steel		19/3.2	19/3.2	19/3.2	19/3.2	19/3.0
	Inner layer		4/4.55	4/4.50	4/4.35	4/4.60	13/4.5
	Layer adjoining to the inner layer		4/4.55	4/4.60	4/4.55	18/4.47	19/4.5
	Outer layer		11/3.70	24/3.80	27/4.30	26/4.47	25/4.50
	The most outer layer		36/3.70	36/3.80	36/4.30	32/4.47	31/4.50
Rated tensile strength		kN	228	253	278	313	329
D.C. resistance at 20		/km	0.046433	0.036179	0.029314	0.023161	0.02133
Current capacity		A	815	904	1000	1147	1160
Weight		kg/km	2994	3491	4013	4713	4962

Construction
ACSR is a concentric-lay-stranded conductor consisting of a single core wire or a stranded steel central core with one or more layers of 1350 H19 stranded aluminum wires. The steel core wires are protected from corrosion by galvanizing, aluminum-clad alloy or zinc 5% aluminum mischmetal alloy coating. Standard, high, extra and ultra high strength steels are also available.

Package

The diameter-extended ispackagedinwoodendrum,steelwoodendrum,steeldrumorcoil.

Tong-Da is a professional all aluminium alloy conductor manufacturer and supplier in China. Our products include: AAC, AAAC, ACSR, Galvanized Steel Wire, Aluminium Clad Steel Wire, PVC wire, PVC/XLPE power cable, Aerial Bundled Cable, rubber cable, control cable, etc.

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