电表箱材料特点
The characteristics of the material of the electric meter box
1、电性能好
1. Good electrical performance
用于制造电器产品的纤维增强聚酯材料有如下的电性能：
The fiber reinforced polyester material used for manufacturing electrical products has the following electrical properties:
绝缘电阻（浸水24h）：1.0x10 MΩ
Insulation resistance (immersion 24h): 1.0x10 M Omega
耐电弧： 180s
Resistance to arc: 180s
耐漏电起痕指数：≥600v
Leakage resistance index: more than 600V
绝缘防护和抗爬电指标符合DIN/VDE相关标准。这种材料不仅具有极佳的电绝缘性，而且在高频下亦能保持良好的介电性能，不受电磁作用，不反射电磁波。这些性能远非金属材料所能相比。
The insulation protection and anti creepage indexes conform to the DIN/VDE standards. This material not only has excellent electrical insulation, but also maintains good dielectric properties at high frequencies, which is free from electromagnetic action and does not reflect electromagnetic waves. These properties are far from the metal material.
2、耐化学腐蚀
2. Chemical corrosion resistance
纤维增强聚酯材料具有很好的耐酸、稀碱、盐、有机溶剂、海水等腐蚀的特性，而金属材料不耐酸、不耐海水腐蚀。
Fiber reinforced polyester material has good corrosion resistance, such as acid, alkali, salt, organic solvent, sea water and so on. The metal material is not resistant to acid and water corrosion.
3、轻质高强
3. Light and high strength
比强度和比模量是衡量材料承载能力的指标之一，纤维增强聚酯材料的比模量与钢材相当，但其比强度可达到钢才的4倍。
The specific strength and modulus are one of the indexes to measure the bearing capacity of the material, and the specific modulus of the fiber reinforced polyester material is equal to that of the steel, but its specific strength can reach 4 times that of the steel.
4、抗疲劳性能好
4. Good fatigue resistance
纤维增强聚酯材料的拉伸强度略好于钢材，钢材及大多数金属材料的抗疲劳极限是其拉伸强度的40%-50%，而纤维增强的复合材料的抗疲劳极限普遍高于这一数值，最高的可达到70%-80%。
The tensile strength of fiber reinforced polyester material is slightly better than that of steel. The fatigue limit of steel and most metal materials is 40%-50% of its tensile strength, and the fatigue limit of fiber reinforced composites is generally higher than that of this value, and the maximum is up to 70%-80%.