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配电箱电器故障的原因介绍
1．环境温度对低压电器影响引起的故障
1. Faults caused by the influence of ambient temperature on low voltage electrical apparatus
配电箱中的低压电器，由熔断器、交流接触器、剩余电流动作保护器、电容器及计量表等组成。这些低压电器均按GB1497《低压电器基本标准》进行设计和制造，并对它们的正常工作条件作了相应规定：周围空气温度的上限不超过40℃；周围空气温度24h的平均值不超过35℃；周围空气温度的下限不低于-5℃或-25℃。
The low voltage electrical apparatus in the distribution box is composed of fuses, AC contactors, residual current action protectors, capacitors and meters. These low-voltage electrical appliances are designed and manufactured in accordance with GB1497 Basic Standards for Low-voltage Electrical Appliances, and their normal working conditions are stipulated accordingly: the upper limit of ambient air temperature does not exceed 40 degrees C; the average value of ambient air temperature for 24 hours does not exceed 35 degrees C; and the lower limit of ambient air temperature does not exceed - 5 degrees C or - 25 degrees C.
农网改造的配电箱在室外运行，它不但受到阳光的直接照射产生高温，同时运行中自身也会产生热量，所以在盛夏高温季节，箱体内的温度将会达到60℃以上，这时的温度大大超过了这些电器规定的环境温度，因而会发生因配电箱内电器元件过热引起的故障。
Running outdoors, the transformed distribution box of the rural power grid not only produces high temperature by direct sunlight, but also generates heat itself. So in the midsummer high temperature season, the temperature inside the box will reach above 60 C, which is much higher than the environmental temperature stipulated by these appliances, so the distribution of electricity will occur. Faults caused by overheating of electrical components in the box.
2．产品质量引起的故障
2. Faults caused by product quality
在农网改造中当时由于需求的配电箱数量大、施工期短，配电箱厂需要有关低压电器的供货时间急且数量多，因而产生了对产品质量的要求不严格的现象，造成了一些产品投入运行后不久就发生故障。如有些型号交流接触器在配电箱投运后不久，就因接触器合闸线圈烧坏，而无法运行。
Because of the large number of distribution boxes needed and the short construction period in the transformation of the rural power network, the distribution boxes factory needed to supply low-voltage electrical appliances in a short time and a large number, which resulted in the phenomenon that the requirements for product quality were not strict, and some products broke down shortly after they were put into operation. For example, some types of AC contactors can not operate because the closing coil of the contactor is burnt out shortly after the distribution box is put into operation.
3．配电箱内电器选择不当引起的故障
3. Faults caused by improper selection of electrical appliances in distribution boxes
由于在制造时对交流接触器容量选择不很恰当，对不同出线回路安装同容量的交流接触器，且未考虑到三相负荷的不平衡情况，而未能将部分出线接触器电流等级在正常选择型号基础上，提高一个电流等级选择，因而导致夏季高温季节运行时出现交流接触器烧坏的情况。
Due to the improper selection of AC contactor capacity in manufacturing, the AC contactors with the same capacity are installed in different outlet circuits, and the unbalanced three-phase load is not taken into account, and the current level of some outlet contactors is not increased by one current level selection based on the normal selection of models, thus leading to summer. The AC contactor burns out during the high temperature season.
1. Faults caused by the influence of ambient temperature on low voltage electrical apparatus
配电箱中的低压电器，由熔断器、交流接触器、剩余电流动作保护器、电容器及计量表等组成。这些低压电器均按GB1497《低压电器基本标准》进行设计和制造，并对它们的正常工作条件作了相应规定：周围空气温度的上限不超过40℃；周围空气温度24h的平均值不超过35℃；周围空气温度的下限不低于-5℃或-25℃。
The low voltage electrical apparatus in the distribution box is composed of fuses, AC contactors, residual current action protectors, capacitors and meters. These low-voltage electrical appliances are designed and manufactured in accordance with GB1497 Basic Standards for Low-voltage Electrical Appliances, and their normal working conditions are stipulated accordingly: the upper limit of ambient air temperature does not exceed 40 degrees C; the average value of ambient air temperature for 24 hours does not exceed 35 degrees C; and the lower limit of ambient air temperature does not exceed - 5 degrees C or - 25 degrees C.
农网改造的配电箱在室外运行，它不但受到阳光的直接照射产生高温，同时运行中自身也会产生热量，所以在盛夏高温季节，箱体内的温度将会达到60℃以上，这时的温度大大超过了这些电器规定的环境温度，因而会发生因配电箱内电器元件过热引起的故障。
Running outdoors, the transformed distribution box of the rural power grid not only produces high temperature by direct sunlight, but also generates heat itself. So in the midsummer high temperature season, the temperature inside the box will reach above 60 C, which is much higher than the environmental temperature stipulated by these appliances, so the distribution of electricity will occur. Faults caused by overheating of electrical components in the box.
2．产品质量引起的故障
2. Faults caused by product quality
在农网改造中当时由于需求的配电箱数量大、施工期短，配电箱厂需要有关低压电器的供货时间急且数量多，因而产生了对产品质量的要求不严格的现象，造成了一些产品投入运行后不久就发生故障。如有些型号交流接触器在配电箱投运后不久，就因接触器合闸线圈烧坏，而无法运行。
Because of the large number of distribution boxes needed and the short construction period in the transformation of the rural power network, the distribution boxes factory needed to supply low-voltage electrical appliances in a short time and a large number, which resulted in the phenomenon that the requirements for product quality were not strict, and some products broke down shortly after they were put into operation. For example, some types of AC contactors can not operate because the closing coil of the contactor is burnt out shortly after the distribution box is put into operation.
3．配电箱内电器选择不当引起的故障
3. Faults caused by improper selection of electrical appliances in distribution boxes
由于在制造时对交流接触器容量选择不很恰当，对不同出线回路安装同容量的交流接触器，且未考虑到三相负荷的不平衡情况，而未能将部分出线接触器电流等级在正常选择型号基础上，提高一个电流等级选择，因而导致夏季高温季节运行时出现交流接触器烧坏的情况。
Due to the improper selection of AC contactor capacity in manufacturing, the AC contactors with the same capacity are installed in different outlet circuits, and the unbalanced three-phase load is not taken into account, and the current level of some outlet contactors is not increased by one current level selection based on the normal selection of models, thus leading to summer. The AC contactor burns out during the high temperature season.
