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Do you know what are the characteristics and advantages of the FRP meter box? - Ruixin Electromechanical tells you

Views: 3     Author: Site Editor     Publish Time: 2022-11-13      Origin: Site

At present, most of the commonly used GRP meter boxes are made of reinforced unsaturated polyester resin molding plastic, which is formed at one time under high temperature and pressure, and has the characteristics of solid box, never deformation, corrosion resistance, anti-aging, long life, easy installation, simple operation, etc. Its unique performance solves the shortcomings of wooden, steel and plastic meter boxes, such as easy aging, easy corrosion, poor insulation, poor cold resistance, poor flame retardancy and short service life. The excellent performance of glass fiber reinforced plastic meter boxes, absolute sealing and waterproof performance, no need for grounding wire, beautiful appearance, safety protection with locks and lead seals, service life of more than 40 years outdoors and more than 60 years indoors, strength of 1N. m, It is incomparable with other metal and plastic meter boxes.

1、 General category of common FRP meter boxes:

It can be divided into transparent meter box, meter tail cover, transparent meter cover, transparent window, 1-meter meter box, 2-meter glass fiber reinforced plastic meter box, 3-meter, 4-meter, 6-meter, 8-meter, 9-meter, 12 meter, 16 meter, plug-in (pre paid) transparent meter box, plug-in glass fiber reinforced plastic meter box, IC card transparent meter box, IC card glass fiber reinforced plastic meter box, PC transparent polycarbonate ABS meter box, plug-in meter box cover, meter tail cover, transparent meter cover, transformer metering box.

2、 Features of FRP meter box:

Good electrical performance Fiber reinforced polyester materials used to manufacture electrical products have the following electrical properties: insulation resistance (24h immersion in water): 1.0x10 M Ω Arc resistance: 180s Leakage tracking resistance index: ≥ 600v Insulation protection and creepage resistance indicators meet DIN/VDE related standards. This material not only has excellent electrical insulation, but also can maintain good dielectric properties at high frequencies, free from electromagnetic effects and reflecting electromagnetic waves. These properties are far beyond those of non-metallic materials.

3、 Materials used for glass meter box:

Chemical resistant fiber reinforced polyester material has good corrosion resistance to acid, dilute alkali, salt, organic solvent, seawater and other corrosion characteristics, while metal materials are not acid resistant and seawater resistant. The specific strength and specific modulus of lightweight high-strength materials are one of the indicators to measure the bearing capacity of materials. The specific modulus of fiber reinforced polyester materials is equivalent to that of steel, but its specific strength can reach 4 times that of steel. Good fatigue resistance The tensile strength of fiber reinforced polyester is slightly better than that of steel. The fatigue limit of steel and most metal materials is 40% - 50% of their tensile strength, while the fatigue limit of fiber reinforced composites is generally higher than this value, up to 70% - 80%.

4、 Material characteristics of meter box:

Notch sensitivity When the component is overloaded and a small amount of fiber breaks, the load is rapidly distributed on the unbroken fiber to regain the mechanical balance. This is not comparable to metal components. Low thermal conductivity and small expansion coefficient. When there is a temperature difference, the thermal stress is much smaller than that of metal. Excellent UV resistance and anti-aging properties Among non-metallic materials, fiber reinforced polyester materials have excellent anti-aging properties. The anti-aging performance test shows that the maximum aging thickness of the surface is less than 50 years for different places of use and different climatic zones μ m。 The minimum thickness of most boxes is 5 mm, which is less than 1% of the box thickness, so there is no obvious impact on the mechanical properties of the box. A special UV resistant surface treatment process was adopted to strengthen its aging resistance.

5、 Length of replacement cycle of meter box:

The service life is long, and the service history in Europe can prove that the service life is at least 20 years; The simulated aging test shows that its service life is more than 20 years, far exceeding traditional materials such as metals. Some companies that use such materials to produce pipes also claim that their pipes have a service life of 50 years. Flame retardant, smokeless and non-toxic This material is a kind of flame retardant material, with the flame retardant grade of FV0 (the highest level of non-metallic materials), the smoke generation grade under high temperature burning is 15 (smoke generation grade 1-100), the smoke is non-toxic, and the toxicity grade is ZA1 (quasi safety grade I).

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