Standard No.:	GB/T 4798.9-2012
English Name:	Classification of environmental conditions - Classification of groups of environmental parameters and their severities - Microclimates inside products
Chinese Name:	环境条件分类 环境参数组分类及其严酷程度分级 产品内部的微气候
Chinese Classification:	A21    Environmental Condition and General Test Method
Professional Classification:	GB    National Standard
Source Content Issued by:	AQSIQ;SAC
Issued on:	2012-11-5
Implemented on:	2013-2-1
Status:	valid
Superseding:	GB/T 4798.9-1997 Environmental conditions existing in application of electric and electronic products - Microclimates inside products
Target Language:	English
File Format:	PDF
Word Count:	6000 words
Translation Price(USD):	180.0
Delivery:	via email in 1~3 business day

GB/T4798的本部分规定了产品在IEC60721-3-3或IEC60721-3-4的气候条件下使用时,其内部元件(基础件、组件和内装设备)可能遇到的各种微气候条件的等级。微气候的特性参数是高气温和高相对空气湿度。其他一些气候等级参数如低温对元件也可能有附加影响,但在本部分未予考虑。
考虑到有代表性的极限高气温,规定了有限的若干个微气候等级。
本部分的使用者应选用能满足预期用途的最低等级。