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BEIHAI YUEDA FRP PRODUCTS
Analysis of the Advantages of Fiberglass Cable Supports Over Angle Steel Cable Supports
Release time:
2019/05/13
With the rapid development of our country's economy, the requirements for urban beautification and power supply safety are also increasing. Cable tunnels and cable trenches have naturally become the main channels for urban power supply. For a long time, cable supports made of angle iron have been used for laying cables. For many years, both utility and industrial cables have been supported by metal cable brackets. Metal brackets are usually made by rolling steel or aluminum alloy into the required profile, which is then assembled by welding or using fasteners. These angle iron supports have several disadvantages and issues: the traditional metal bracket production process consumes a lot of energy, involves many processes, and has a long cycle. In many harsh environmental conditions, such as subways, tunnels, and chemical enterprises...
With the rapid development of our country's economy, the requirements for beautifying cities and ensuring power supply safety are also increasing. Cable tunnels and cable trenches have naturally become the main channels for urban power supply. For a long time, cable installation has used cable supports made of angle iron.
For a long time, the installation of utility and industrial cables has used metal cable supports. Metal supports are usually made by rolling steel or aluminum alloy into the required profile, then welding or assembling with fasteners. These angle steel supports have many disadvantages and problems: the traditional metal support production process consumes a lot of energy, has many processes, and takes a long time. In many harsh environmental conditions, such as subways, tunnels, chemical enterprises, rainy and humid areas, or coastal salt mist, metal supports are prone to rust, leading to high maintenance costs and a shorter lifespan. Although technologies such as external paint or hot-dip galvanizing are currently used for rust and corrosion prevention, they still cannot fundamentally solve the rust problem, affecting the safety and fault-free service life of power and communication facilities. In addition, when using metal supports for cable installation, the current flowing through the cable generates a magnetic field, leading to the formation of a closed magnetic circuit (eddy current) between the two angle steel supports.)This causes the cable temperature to rise, increases current loss, and further raises the temperature of the eddy current. Especially when the cable carries a large current, the temperature rises rapidly, often resulting in a strong arc that damages the metal supports. For the safety of power transmission, measures such as using thicker cables are currently taken, which increases the manufacturing cost of transmission equipment. Additionally, according to power regulations, since all metal supports are prone to generating electric charge and voltage drop under the influence of the electric field, it is necessary to connect metal supports to the grounding network, which greatly increases the project workload and duration.
Fiberglass cable supports are composite materials made from synthetic resin as a binder and fiberglass and its products as reinforcing materials. Fiberglass cable supports have advantages such as high strength, good toughness, corrosion resistance, high insulation performance, good flame retardancy, resistance to aging, and long service life. The emergence of fiberglass cable supports has led to the replacement of more and more angle iron supports, fundamentally ensuring the safety of power and communication facilities. At the same time, fiberglass cable supports have a significant advantage: they are insulated, while general angle iron cable supports are conductive materials, making it easy to form eddy currents that can cause power losses. The high insulation coefficient of fireproof cable supports effectively avoids this problem.
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