Standard No.:	GB/T 2423.22-2002
English Name:	Environmental testing for electric and electronic products - Part 2: Test methods Test N: Change of temperature
Chinese Name:	电工电子产品环境试验 第2部分：试验方法 试验N：温度变化
Chinese Classification:	K04    Basic standards and general methods
Professional Classification:	GB    National Standard
Issued by:	AQSIQ; SAC
Issued on:	2002-6-13
Implemented on:	2003-1-1
Status:	valid
Superseded by:	GB/T 2423.22-2012 Environmental testing - Part 2: Tests methods - Test N: Change of temperature
Superseding:	GB 2423.22-1987 Basic environmental testing procedures for electric and electronic products--Test N: Change of temperature
Language:	English
File Format:	PDF
Word Count:	4000 words
Price(USD):	80.00
Delivery:	via email in 1 business day

1.1 Purpose

It is used to determine the capacity of bearing rapidly changing ambient temperature for component, equipment and other products. The required exposure duration depends on the property of test sample.

1.2 General descriptions for the test

The test samples are exposed to low and high temperature air (or appropriate inert gas) to bear the influence of rapidly changing temperature.

1.3 Description of test equipment

1.3.1 Test chamber

1.3.1.1 Two test chambers shall be prepared, one is low temperature chamber, the other is high temperature chamber, The position two chambers placed shall be able to transfer the test sample from one chamber to the other chamber in specified time. The conversion method may be manual or automatic.

Contents
1 Test Na: Rapid Change of Temperature with Specified Switching Time
2 Test Nb: Change of Temperature with Specified Change of Temperature Rate
3 Test Nc: Two Fluid Bathes Method Temperature Rapid Change