JL/G1A120/35 parameter specifications, national standard fully inspected steel core aluminum stranded wire

Description :

　　 JL/G1A120/35 parameter specifications, national standard fully inspected steel core aluminum stranded wire

　　Advantages of steel cored aluminum stranded wire:

　　 Steel cored aluminum stranded wire, English name: aluminum conductor steel reinforced，ACSR。 It is a reinforced conductor with single or multiple layers of aluminum stranded wires twisted outside a galvanized steel core wire. Mainly used in the power and transmission line industries.

　　The pitch diameter ratio of aluminum stranded wire shall comply with the provisions of Table 5; The twisted joint diameter ratio of steel cored aluminum stranded wire shall comply with the requirements of Table 6 4.5 Process Quality

　　 4.5. 1. Twisted wires should be neatly twisted without any missing wires, broken wires, jumper wires, or loose strands. 4.5.2 Connectors

　　 4.5.2.1 Hard aluminum wire is allowed to have joints before drawing. But if all of the following conditions are met, the finished hard aluminum wire is also allowed to have a joint:

　　 a) The weight of the coiled hard aluminum wire is 50okg or more;

　　 b) There should be no more than one joint in the coiled hard aluminum wire;

　　 c) The number of turns of this type of coiled hard aluminum wire with one joint shall not exceed 10% of the total number of turns

　　 d) When requested by the user, the manufacturer shall provide proof that the tensile strength of the joint is not less than 130Mpa. The markings that should be placed on the finished hard aluminum wire with one joint. 4.5.2.2 Galvanized steel wire is not allowed to have joints.

　　 5. Acceptance rules and testing methods

　　 5.1 The acceptance rules and testing methods for finished stranded wires are shown in Table 76. Packaging and Marking

　　 6.1 The packaging and labeling of finished stranded wires shall comply with the provisions of Article 9 of GB1179-83

　　 LGJ is the symbol for steel cored aluminum stranded wire, where L is the abbreviation for aluminum wire, G is the abbreviation for steel core, and J is the abbreviation for stranded wire. 300/50 refers to the nominal cross-sectional area of the wire being 300 square millimeters for aluminum and 50 square millimeters for steel; The structure of the wire consists of 26 aluminum wires with a diameter of 3.83 square millimeters and 7 steel wires with a diameter of 2.98 square millimeters; The calculated cross-section of aluminum is 300 square millimeters, the calculated cross-section of steel is 48.8 square millimeters, and the total calculated cross-section is 348 square millimeters; For transmission lines above 10kV, aluminum clad steel stranded wire (LGJ) is commonly used as the conductor in China, which wraps the steel wire with aluminum wire. The steel wire is used to transmit current, while the aluminum wire is used to reduce corona and other losses. The cross-sectional area of the conductor gradually increases according to different voltages. For example, currently in China, the conductors for high voltage 500kV transmission lines generally use LGJ-300/50 conductors.

　　 Steel cored aluminum stranded wire has the characteristics of simple structure, easy installation and maintenance, low line cost, large transmission capacity, and is conducive to laying in special geographical conditions such as crossing rivers and valleys. It has good conductivity and sufficient mechanical strength, high tensile strength, and the tower distance can be enlarged. Therefore, it is widely used in overhead transmission and distribution lines of various voltage levels.

　　 Specification of steel cored aluminum stranded wire 10/2~1440/100, in accordance with standard GB/T1179-2017

　　 JL/G1A120/35 parameter specifications, national standard fully inspected steel core aluminum stranded wire

　　Transportation and packaging standards:

　　 Steel cored aluminum stranded wire should be delivered in reels, with the distance between the outermost layer and the edge of the cable reel side panel not less than 30mm, and properly packaged. The two twisted wires connected together during packaging should have at least half of the aluminum wire cut at the connection point, and the two sides of the connection point should be firmly tied. The cable reel shall comply with the provisions of GB4005-83 "Delivery reels for wires and cables". Short stranded wires are allowed to be delivered in loops, and each loop should be tied at least three times and properly packaged. The product should be inspected and qualified by the manufacturer before leaving the factory, and each product leaving the factory should be accompanied by a quality inspection certificate.

　　Steel cored aluminum stranded wires are arranged in a criss crossing manner on transportation vehicles such as vehicles and ships. The cable reels must be placed steadily, and both sides must be firmly fixed to the transportation vehicle with steel wire ropes. The bottom of the cable reels should be plugged with triangular wedges to prevent them from shaking, colliding, or tipping over during transportation. When transporting large cable reels, attention should be paid to selecting road transportation equipment. If using heavy-duty trucks for transportation, the height of the truck should comply with the height restrictions of bridges, culverts, etc. on the traffic road. If the limit is exceeded, a dedicated trailer can be used to reduce the transportation height. When the cable reel rolls on the ground, it must be rolled in the direction indicated by the arrow on the side of the cable reel. Rolling in the opposite direction will cause the cable to unwind and loosen. For cables without protective plates, the two side plates must protrude more than 10cm from the outer layer of the cable when rolling. During rolling, hard objects should be prevented from pressing under the cable reel to avoid damaging the cable. When rolling the cable reel, it should be controlled within a small distance range, and special equipment such as forklifts or cranes should be used for long-distance movement.

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• aluminum conductor steel reinforced (ACSR)