8/23/2023 0 Comments Guy wire insulator![]() Guy strain insulator is normally used in outdoor power transmission lines. It also maximizes the load transfer property of the insulator especially when the transmission line is used for high voltage power. The shape and design of the guy strain insulator increase the distance between the strands hence maximizing the insulation properties of the insulator. The importance of the guy strain insulator is witnessed when workers are working on the pole line. Guy strain insulators can be used with different end fittings, clevis, Y clevis, and thimble eye. It is made of fiberglass material and designed to shield the guy strands from the current that may be flowing through the transmission line. The advantages of strain insulators include the following.A guy strain insulator is designed to be used with guy wire on the overhead pole lines. This insulator reduces extreme tension on the line.These are used as the line is subjected to larger strain like river crossings, dead ends, sharp curves.These are designed for horizontal mounting so the shape of flanges that are used for shed water & strain insulators used for vertical mounting is bell-shaped.In practice, the shape of the insulator will become significant, because a wet lane from one cable to others can make a low-resistance electrical lane. In this situation, they will expose to rainfall, in urban areas they will expose to pollution. These are normally used in overhead wiring at outdoors.These are used for electrical wiring in transmission lines to support transmission lines and radio antennas.The applications of strain insulators include the following. So these insulators are main electrical insulators used to support and insulate the conductors. For all the insulators, the above tests are appropriate.The routine tests are high voltage, proof load, and corrosion.The performance tests are temperature cycle, electromechanical, puncture, mechanical strength, and porosity.The type tests are dry flashover, thirty-second rain, wet flashover & impulse frequency tests.To ensure the quality of insulators, this must go through these tests like type tests, performance, and routine tests. For 220kV rated system voltage, fifteen disc insulators are used in insulator string.For 132kV rated system voltage, nine-disc insulators are used in insulator string.For 66kV rated system voltage, five-disc insulators are used in insulator string.For 33kV rated system voltage, three-disc insulators are used in insulator string.This insulator should include significant mechanical strength & the required electrical insulating assets. This system is used for long distances like when a transmission line crosses a canal, valley, pond, etc. ![]() The single plate is over the hot end & the other one is situated at the support arrangement. If one string is inadequate for the strain, then a weighty steel plate bundles numerous insulator strings mechanically. ![]() By using hardware, insulators are connected. Once the line voltage needs more insulation to compare with a single insulator then these insulators are connected in series to provide highly effective insulation. Generally, these insulators are in physical tension with radio antennas, overhead power lines, and guy-wires. This insulator shape will reduce the space between the two cables. This is designed with porcelain or glass or fiberglass and includes supporting hardware and two cables. For fewer voltage lines like < 11 kV, then shackle insulators are employed like strain insulators. To maintain high tensions, more than two suspension strings are connected in parallel. So, the suspension insulator string can be placed horizontal plane whereas the discs of an insulator are arranged in a vertical plane. In high voltage transmission lines, these insulators include a set of suspension insulators. To maintain this huge tension, strain insulators are utilized at sharp corners. In the transmission line, at a corner line is a great tensile load. Strain Insulator Working of Strain Insulator The strain type insulator diagram is shown below. This insulator can be placed between two wires to separate them electrically from each other. These insulators give support to the transmission lines as well as radio antennas in electrical wiring. Definition: Electrical insulator that works in mechanical strain to resist the balanced electrical cable is known as strain insulator.
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