標準號：IEC 60216-4-2-2000
中文標準名稱：電氣絕緣材料 耐熱性能 第4-2部分:熱老化烘箱 *高至300℃的精密烘爐
英文標準名稱：Electrical insulating materials - Thermal endurance porperties - Part 4-2: Ageing ovens; Precision ovens for use up to 300 °C
標準類型：K15
發布日期：1999/12/31 12:00:00
實施日期：1999/12/31 12:00:00
中國標準分類號：K15
國際標準分類號：25.180.10;29.035.01
適用范圍：This part of IEC 60216 covers minimum performance requirements for ventilated and electrically heated precision ovens for thermal endurance evaluation of electrical insulating materials and other appropriate applications. It covers ovens designed to operate over all or part of the temperature range from 20 K above room temperature up to 300 ℃.Two possible methods of achieving the required performance are described:a) where the required performance is achieved by precise control of temperature in a simple single chamber oven, i.e. upgraded versions of ovens conforming to IEC 60216-4-1, and, otherwise,b) where the required performance is achieved by utilizing a second chamber (iso-box), mounted within the chamber of a single-chamber oven, the purpose of which is to reduce the magnitude of any temperature changes to an acceptable level whilst maintaining the required levels of air change and circulation. Experience has shown that employment of an iso-box is an economical and practical means of meeting the requirements for a precision oven.NOTE 2 It is recommended that a precision oven rather than a standard oven is used when the expected halving interval is less than 10 K (20 kh to 10 kh) in order to increase the precision of the measured temperature index and halving interval to a reasonable level.