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Who is the end customer of the gold ware? Final use units: State Grid Corporation of China, China Southern Power Grid Corporation, power grid and power companies of provinces and cities, overseas users, etc.
How are the gold fittings sold to the end customers – in the circulation process? Direct payments to us are all our customers, but there is only one final customer. Hardware manufacturers – > terminal client hardware manufacturers – > agent/trader – > terminal client hardware manufacturers – > agent/trader – > the contract the contractor – > terminal customers
Ii. General classification of gold fittings? (1) Hanging line clamp class, represented by the letter C (X); (2) tensioning line clamp class, represented by letter N; (3) Connecting fittings, no classification represents the letter, the first word of the model is the first word of the product name, but not the same as the letter of the classification; (4) Connecting fittings, denoted by letter J; (5) Protective fittings, denoted by letter F; (6)T connection fittings, represented by the letter T; (7) Equipment line clamp class, represented by the letter S; (8) Bus fittings, represented by the letter M;
Three, the detailed division of gold ware
1. What is wire fittings? A piece of metal used for transmission lines
2. What are transformer fittings? A piece of metal used in a substation.
3. What is vibration-proof gold? A metal tool used to suppress vibration of a wire.
4. What are connection fittings? Metal fittings for connecting iron towers, insulators and conductors.
5. What is protective hardware? Metal fittings for protecting wires, fittings, insulators.
6. What is a harness? A piece of metal that joins two wires together.
7. Stress of tensioning fittings and overhanging fittings and their relationship with corner tower and straight tower? Tensile metal withstands all the tension of the wire, breaking no less than 95%RTS of the wire; The pendant metal bears the dead weight of the wire (ice, snow) and has a certain grip strength, generally between 14% and 25% of the wire RTS, depending on the wire. As the name implies, to turn the tower, the wires on both sides of the tower form an Angle, need to bear the tension of the wire, the use of tensioned gold; Straight line tower wire directly through, is a straight line, if only to bear the weight of the wire with overhanging gold, if bear the tension of the wire with tensioning gold.
Four, gold fittings related and different
1. The main difference between ground wire and wire hardware? That’s the difference between a ground wire and a wire, when you use these two different kinds of cables, the ground wire is not charged, the wire is charged.
2. The main difference between ground wire and OPGW? General ground wire is galvanized steel strand, can use the conventional form of gold; OPGW has optical fiber units, and the supporting fittings can not be pressed and hard pressed to OPGW, so pre-stranded fittings are needed.
3. Why do OPGW or ADSS fittings need pre-stranded fittings? What are the characteristics? See above for reasons. It is characterized by convenient installation, free hand installation, large contact area, uniform stress distribution, no stress concentration point, and good dynamic stress tolerance.
4. Can pre-twisted wire only be used in optical cable? Not really, can also be used in ground, wire.
5. What is the difference between OPGW and ADSS? Because OPGW optical cable and ADSS optical cable in the structure is completely different, so in the metal should be different. (1)OPGW tensioning drape fittings need to carry more grip force and vertical load than ADSS tensioning drape fittings, so the strength of the connecting piece, the length of the strand and the diameter of the monofilaments of OPGW tensioning drape fittings are larger than ADSS tensioning drape fittings. (2) In order to meet the function of OPGW ground wire, OPGW tensioning drape fittings need to configure grounding wire. ADSS does not. (3) Since the hanging point Angle steel is reserved on the tower of OPGW, there is no need to configure additional fasteners, while the connecting tower fasteners are required for ADSS line. (4) Due to the structural differences between OPGW and ADSS optical cables, there is also a difference in the structure of the joint box feeding fixture between them.
6. The difference and connection between heat-resistant gold fittings and ordinary gold fittings? Heat resistant gold fittings are developed on the basis of ordinary gold fittings, heat resistant gold fittings can withstand 150°~240° high temperature and ensure enough grip strength.
OPGW tensioning gold fittings and hanging gold fittings
1. What parameters should be provided to design a set of OPGW tensioning fittings and overhanging fittings? OPGW cable parameters, type of tension-overhanging hanging point fittings and the relationship between bolt penetration direction and the line should be provided.
2. What components does a set of OPGW cable have? And their materials? A set of OPGW tensioning fittings includes connectors, tensioning stranded wires and grounding wire assemblies. Connecting pieces are generally galvanized steel pieces, tensioning skein wire is generally aluminum wire, grounding wire is generally aluminum alloy.
3. How to determine the horizontal tension (load) of OPGW tensioning metal fittings? If there is no special requirement, OPGW tensile strength can meet 95% of OPGW rated tensile strength.
4. The difference and connection between type OPGW and joint type? Through type OPGW tensioning gold is designed to meet the line direction, high and low drop requirements or other factors must be used, through type tensioning both sides only need a grounding can; Joint TYPE OPGW tensioning gold fittings are designed and used when one plate OPGW is connected with another plate OPGW. Each set of tensioning is equipped with one grounding wire.
5. Why should THERE be grounding wire for OPGW tensioning metal? And common forms? OPGW Chinese for optical fiber composite overhead ground wire, it has the dual function of communication and ground wire, because there is no direct current transmission medium between OPGW and tower, all must be equipped with ground wire. The grounding wire is classified by the size of the section, commonly 70., 95 and 120 three specifications.
6. Composition of OPGW grounding wire? The grounding cable consists of aluminum stranded wire, cable clamp, grounding terminal, bolt, etc.
7.OPGW grounding wire material and area? The material of OPGW grounding wire is aluminum stranded wire, and the area is generally 70 section, 95 section and 120 section.
8. How to connect the OPGW grounding wire to the tower and cable? OPGW grounding cable is connected with OPGW through parallel trench clamp, and the parallel trench clamp is a double channel structure. One channel is designed to clamp OPGW, and the other channel is designed to clamp aluminum stranded ground wire. The parallel trench clamp is made of aluminum, which can meet the electrical performance transmission. The OPGW ground cable is connected to the tower through the ground cable terminal. Secure the ground cable to the round hole reserved for the ground device on the tower using bolts to enable the OPGW ground cable function.
9. How about the naming of OPGW cable tensioning fittings and overhanging fittings? OPGW cable tension with the name of the general on-force value – cable diameter (where the force value is 3, cable diameter is 4), such as ON-080-1230 ON behalf of the use of 12.3mm cable diameter, grip force of 80kN OPGW tension with. OPGW cable suspension fittings are generally named AS OC-gear distance – cable diameter (the gear distance is 4, the cable diameter is 4), such as OC-0400-1230 represents the applicable gear distance is 400 meters, the applicable cable diameter is 12.3mm OPGW suspension fittings.
10. Composition and material of OPGW optical cable overhanging fittings? OPGW cable overhang gold is composed of aluminum alloy inside and outside stranded wire, aluminum alloy cast aluminum shell, epDM rubber clamp and the corresponding connector.
11. How to specify the horizontal slip load and vertical failure load of OPGW cable fittings? The horizontal sliding load of OPGW cable fittings is generally 10%-20% of the rated tensile strength of OPGW cable, and the vertical load is generally divided into 70kN, 100kN, 120kN levels.
13. What is the difference and connection between the grounding wire of OPGW overhanging fittings and tensioning fittings? OPGW overhanging metal fittings grounding wire and tensioning metal fittings grounding wire are generally the same.