| 环氧绝缘件的主要性能是它的绝缘特性又叫介电特性 |
| 添加时间：2019/12/3 16:44:11 浏览次数： |
| (1)电气性能：环氧绝缘件的主要性能是它的绝缘特性又叫介电特性，介电性能的考核主要针对两方面：一方面对材料的考核，材料本身的质量、配方、固化程度;另一方面是对制品的考核，制品的设计和制造质量。 (1) electrical performance: the main performance of epoxy insulating parts is its insulation property, also known as dielectric property. The dielectric property assessment is mainly aimed at two aspects: on the one hand, the assessment of materials, the quality, formula and curing degree of materials; on the other hand, the assessment of products, the design and manufacturing quality of products. a、介电强度：在规定的试验条件下，绝缘发生击穿是、时的电压与击穿处的绝缘厚度的比值，原来叫击穿强度，单位是kV/mm. A. dielectric strength: under the specified test conditions, the ratio of the voltage when the insulation breaks down to the thickness of the insulation at the place where it breaks down, originally called the breakdown strength, unit: kV / mm b、绝缘电阻：在规定条件下，处于导体之间或导体和接地点之间的绝缘材料的电阻。 B. insulation resistance: the resistance of insulating materials between conductors or between conductors and grounding point under specified conditions. c、额定短时工频耐受电压：在绝缘件实际应用的两极间施加一定的工频耐压，使产品在这一特定电压下保持一段规定的时间，绝缘件不应发生击穿、闪络; C. rated short-time power frequency withstand voltage: apply a certain power frequency withstand voltage between the two poles of the insulating parts in actual application, so that the products can maintain a specified period of time under this specific voltage, and the insulating parts shall not have breakdown and flashover; d、额定雷电冲击耐受电压 ：在绝缘件实际应用的两极间能够承受规定次数的正负极性一定的波前时间在20us及以下的冲击电压，绝缘件不应发生击穿，闪络次数不多于2次。 D. rated lightning impulse withstand voltage: it can withstand the impulse voltage with a specified number of times of positive and negative polarity and a certain wave front time of 20us or less between the two poles of the insulating parts, and the insulating parts shall not have breakdown, and the number of flashover shall not be more than 2 times. |
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