High zinc steel wire anti oxidation national standard JL/G1A-70/10 wire steel core aluminum stranded wire

Description :

　　High zinc steel wire anti oxidation national standard JL/G1A-70/10 wire steel core aluminum stranded wire

　　Steel cored aluminum stranded wire details introduction:

　　 The model of steel cored aluminum stranded wire is represented as LGJ; The model of aluminum stranded wire is represented as LJ3. Standard adopted:

　　 Steel cored aluminum stranded wire adopts the following standards

　　 3.1 GB1179-83 "Aluminum Stranded Wire and Steel cored Aluminum Stranded Wire";

　　 3.2GB3428-82 "Galvanized Steel Wire for Steel cored Aluminum Stranded Wire"

　　 3.3 TB1008-99 "Code for Design of Railway Electric Power"

　　 3.4 GB/T1179-1999 "Round Wire with Same Core Stranded Hollow Wire" 3.5 GB/T17048-1997 "Hard Aluminum Wire for Overhead Stranded Wire"

　　 4. Main technical parameters:

　　 4.1 Galvanized steel wire in steel core aluminum stranded wire shall comply with the provisions of GB3428-82 "Galvanized Steel Wire for Steel Core Aluminum Stranded Wire" and Appendix D of GB1179-83

　　 4.2 Aluminum wire should comply with the requirements of GB/T1179-1. "Round Wire with Same Core Twisted Frame Empty Wire" in terms of material. LY9 electrical round aluminum wire should be used, with a resistivity of 9g not exceeding 0.028264.2m/m and a tensile strength of 4.3. Physical parameters of aluminum stranded wire

　　 4.4 The twisted 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 Complete specifications JL/G1A-70/10 high zinc low zinc steel core aluminum stranded wire

　　The main applications of steel cored aluminum stranded wire are:

　　 For high-voltage transmission lines, due to the limited path of the line and the impossibility of installing multiple lines on one path, people have come up with the method of using one path, one set of iron towers, and hanging multiple wires, that is, one line is equivalent to installing multiple lines; For 500KV transmission lines, China mostly adopts the method of hanging four wires, which is called the same tower parallel installation.

　　 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.

　　High zinc steel wire anti oxidation national standard JL/G1A-70/10 wire steel core aluminum stranded wire

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