The characteristics and advantages of the meter box material
1, good electrical performance
Fiber reinforced polyester materials used in the manufacture of electrical products have the following electrical properties:
Insulation resistance (immersion 24h): 1.0x10 MΩ
Arc resistance: 180s
Resistance tracking index: ≥600v
Insulation protection and anti-climbing indicators comply with DIN/VDE related standards. This material not only has excellent electrical insulation, but also maintains good dielectric properties at high frequencies, is immune to electromagnetic effects, and does not reflect electromagnetic waves. These properties are far from comparable to metal materials.
2, chemical corrosion resistance
Fiber reinforced polyester materials have good corrosion resistance to acids, alkalis, salts, organic solvents, seawater, etc., while metal materials are not resistant to acid and seawater.
3, lightweight and strong
Specific strength and specific modulus are one of the indicators for measuring the load carrying capacity of a material. The specific modulus of a fiber reinforced polyester material is comparable to that of steel, but its specific strength can reach 4 times that of steel.
4, good anti-fatigue performance
The tensile strength of fiber reinforced polyester materials is slightly better than that of steel. The fatigue limit of steel and most metal materials is 40%-50% of the tensile strength, while the fatigue resistance limit of fiber reinforced composites is generally higher than this. A value of up to 70% -80%.
5, gap sensitivity
When the component is overloaded and there is a small amount of fiber breakage, the load is quickly distributed over the unbroken fibers to regain the mechanical equilibrium. This is incomparable with metal components.
6, low thermal conductivity, small expansion coefficient
The thermal stress generated when there is a temperature difference is much smaller than that of metal.
7, excellent UV resistance and aging resistance
Among non-metallic materials, fiber reinforced polyester materials have excellent anti-aging properties. The anti-aging performance test shows that the location of the climatic zone is different, and the maximum aging thickness of the surface is less than 50μm in 20 years. Most cabinets have a minimum thickness of 5 mm, which is less than 1% of the thickness of the cabinet, so there is no significant effect on the mechanical properties of the cabinet. The company has adopted a special UV-resistant surface treatment process to further enhance its aging resistance.
8, long service life
The history of use in Europe can prove its service life is at least 20 years; the simulated aging test shows that its service life is more than 20 years, far exceeding the traditional materials such as metal. Some companies that produce pipes from such materials also claim that their pipes have a service life of 50 years.
9, flame retardant, smokeless, non-toxic
This material is a flame retardant material with a flame retardant rating of FV0 (the highest grade of non-metallic materials). The level of smoke is 15 (smoke level 1 - 100) at high temperature, and the smoke is non-toxic. The toxicity level is ZA1 (quasi-safe level 1).
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