At present,China commonly use aluminum wires (LGJ) as conductors;The steel core is mainly to increase the intensity of the effects,aluminum wires mainly ACTS as transmit electricity.
According to the different voltage, the cross-sectional area of the wire is also different.Such as the current domestic wire LGJ-400/35 500 thousand volt transmission line conductor. L is the abbreviation of aluminum wires,400 aluminum is 400 square millimeter, 35 steel is 35 square millimeter.
Applicable scope:This standard applies to aluminum wire and ACSR,which are used for overhead power lines.
Product types and specifications and is represented by the standard no..
For example: the standard cross section of aluminum wire: 240mm2, expressed as:
LJ - 240GB1179 - 83
The nominal cross section aluminum 300mm2,
Steel core aluminum stranded steel 50mm2, expressed as:
LGJ - 300/50GB1179 - 83
Specifications:The specifications should be expressed in nominal cross section.
Aluminum wire specification should be consistent with the regulations in table 2.
ACSR should comply with the specifications of anti-corrosion ACSR.
Material Science of aluminum wires:
Round aluminum wire should comply with GB/T17048 - 1997 "overhead wire with diaspore line" provisions.
Galvanized steel wire should conform to GB3428 2002 "overhead wire for" the provisions of galvanized steel wire.
Anticorrosive paint should be neutral, drop point should be no less than 110 degrees, and it has a weather resistant performance.
Do you know the structure of aluminum wires?
Al 5.1.1 strand in root number and nominal diameter should be consistent with the provisions of table 2.
5.1.2 twist pitch diameter ratio should meet the specification in table 3.
Pitch diameter ratio refers to a complete spiral wire in a single form of arbitrary axial length and diameter ratio of screw.
Any ground layer pitch diameter ratio should be less than the inner diameter than the adjacent section.
The adjacent layers of the cutter to be opposite, the outermost layer of the right to.
Aluminum and steel wire strand 5.2.1 in root number and nominal diameter should be consistent with the provisions of table 4.
5.2.2 twist pitch diameter ratio should meet the specification in table 5.
Either aluminum or steel strand layer section diameter ratio should be not greater than the inner layer respectively adjacent pitch diameter ratio.
The adjacent layers of the cutter to be opposite, the outermost layer of aluminum conductor for the right to.
According to the requirements of users, we can uniformly coated anticorrosive coatings in ACSR any specified layer.