IEC 60216-4-2-2000
电气绝缘材料 耐热性能 第4-2部分:热老化烘箱 最高至300℃的精密烘炉

Electrical insulating materials - Thermal endurance porperties - Part 4-2: Ageing ovens; Precision ovens for use up to 300 °C

标准号

IEC 60216-4-2-2000

发布日期

2000年07月

实施日期

废止日期

无

中国标准分类号

K15

国际标准分类号

25.180.10;29.035.01

发布单位

IX-IEC

被代替标准

IEC 15E/135/FDIS-2000

适用范围

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. NOTE 1 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.

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