交流接触器3RT1和中间继电器3RH1的电磁线圈的绝缘材料等级和最大可允许的温度

问题: 交流接触器3RT1和中间继电器3RH1的电磁线圈绝缘材料属于什么等级? 它们最大允许的运行温度是多少? 解答: 交流接触器3RT1和中间继电器3RH1的电磁线圈最大允许的运行温度是140 °C. 由其绝缘材料等级决定了这些电磁线圈在室温运行情况下可允许的最大温升为100 K（绝缘等级为E级）. 这个温升值是一个绝对温度值,根据IEC 60947-4-1标准,接触器运行的最高环境温度是+40 °C,这个温升值需要叠加在此环境温度之上. 标准章节8.2.2表格5中的温升值,只适用于环境温度范围在-5°C到+40°C的情况下. 来源: IEC 60947-4-1 章节8.2.2. 温升参数:表格5 接触器绝缘材料等级在IEC标准下型式试验报告 条目号:24322858 日期:2006-12-29 QUESTION: To which class of insulating material are the solenoid coils of contactors 3RT1 and auxiliary contactors 3RH1 subject? What are their maximum permissible temperatures? ANSWER: The maximum permissible temperature of solenoid coils of contactors 3RT1 and auxiliary contactors 3RH1 is 140 °C. For these coils the maximum permissible temperature rise limit for coils in air according to class of insulating material is E = 100 K. Since this is a temperature rise in Kelvin, this value shall be added with the maximum ambient air temperature of +40 °C of the contactors as described in IEC 60947-4-1. The temperature rise limits given in table 5 of the standard's chapter 8.2.2. are applicable only if the ambient air temperature remains within the limits -5 °C to +40 °C. Sources: - IEC 60947-4-1 Chapter 8.2.2. Temperature rise: Table 5 and NOTE - IEC-Type test certificate of contactors for the class of insulating material Entry ID:24322858 Date:2006-12-12