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Distribution
Composite cross-arm (CICA) distribution line overall solution
Focusing on the goal of constructing a fully insulated power distribution line, SHEMAR comprehensively applied innovative achievements in the field of new materials to build a fully insulated power distribution network with fully composite poles, composite insulated cross arms, insulated wires, and fully insulated equipment. The overall solution can greatly reduce the malfunction rate of distribution lines and improve the reliability of line operation.
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01Distribution composite cross arm
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02Insulated wires
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03Composite poles
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04Composite sheath
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05Composite post/bushing
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Insulating materials replace traditional iron materials, greatly increasing the distance of the cross arm dry arc
Effectively improve the lightning protection level to above 350kV, without tripping and uninterrupted wiring
Bird nests are not easy to short-circuit, to prevent bird damage accidents
Excellent water repellency, greatly improving stain resistance
Excellent aging resistance, not affected by acid and alkali corrosion
Reduce the weight of the cross arm by about 50%, making the installation more convenient
The whole life cycle of the external insulation is free of operation and maintenance, which greatly reduces the whole life cycle investment of the distribution line
It is beneficial in preventing typhoon caused short circuit accidents by instantaneous collision of conductors
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Suitable for places with many trees to solve the problem of tree barriers
Suitable for areas with a lot of flying metal dust and pollution, to avoid short circuit and ground fault of overhead distribution lines
Applicable to salt spray areas to reduce the corrosion of salt spray to conductors
It is beneficial to prevent typhoon and avoid short circuit caused by instantaneous collision of wires
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Using glass fiber reinforced composite materials, instead of traditional cement poles
Significantly reduce the weight of electric poles, reduce installation and maintenance costs
The composite rod has excellent corrosion resistance and weather resistance to corrosive media such as acids, alkalis, salts and organic solvents
The composite pole has excellent electrical insulation performance, which can avoid the occurrence of lightning accidents, and can also be designed to reduce the gap between the conductor and the tower, making the transmission line structure more compact, and reducing the width of the line corridor
As the current cost of electric poles is relatively high, they can be applied first in special conditions such as typhoons and mountainous areas
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Use high-temperature vulcanized silicone rubber with excellent aging resistance to match the equipment's various incoming and outgoing pile heads and other exposed positions to form an insulating sheath to hold the equipment to avoid flashover accidents caused by bird and other issues.
For the existing power grids, aging-resistant hard plastics are used, combined with a self-closing structure to form a hard insulating shield, which realizes live remote installation to solve the insulation problem of equipment in the existing power grid.
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For the post insulator and bushing on the equipment, composite core materials are used, plus a high-temperature vulcanized silicone rubber sheath, which has excellent aging and pollution resistance which can realize the whole life cycle maintenance-free of the external insulation of the equipment.
Compared with the iron cross-arm (only the replacement of angle iron and pin insulators are considered), the life cycle cost of SHEMAR distribution network composite cross-arm is reduced by about 40%. Compared with similar composite cross-arms in the market, the cost is reduced by about 40%.
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SHEMAR distribution composite cross arm
Iron cross arm
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SHEMAR distribution composite cross arm
Iron cross arm
The overall solution of the composite crossarm for distribution line can be applied to the distribution network line to replace the traditional "iron crossarm and pin insulator" combination. The common loop (single-circuit, double-circuit, multi-circuit) distribution network crossarms are mainly composed of horizontal crossarm, top-phase crossarm, and diagonal brace crossarm.
