GB/T 2424.7-2006 in English

《GB/T 2424.7-2006电工电子产品环境试验 试验A和B（带负载）用温度试验箱的测量》由TC8（全国电工电子产品环境条件与环境试验标准化技术委员会）归口，TC8SC2（全国电工电子产品环境条件与环境试验标准化技术委员会气候环境试验分会）执行，主管部门为中国电器工业协会。
本标准等同采用IEC 60068-3-7：2001。本标准提供了一个统一可再现的方法，用以确认温度试验箱在有散热性/非散热性试验样品负载并且工作空间内有空气循环条件下，符合GB/T 2423.1和GB/T 2423.2气候试验规定的要求。本标准适用于用户进行常规的试验箱性能监测。

1 Scope

This part of GB/T 2424 provides a uniform and reproducible method of confirming that temperature test chambers conform to the requirements specified in climatic test procedures of GB/T 2423.1 and GB/T 2423.2, when loaded with either heat-dissipating or non heat-dissipating specimens under conditions which take into account air circulation inside the working space of the chamber. This standard is destined primarily for users when conducting regular chamber performance monitoring.

2 Normative references

The following normative documents contain provisions which, through reference in this part, constitute provisions of this part. For dated references, subsequent amendments (excluding corrections) to, or revisions, of any of these publications do not apply. However, parties to agreements based on this part are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest editions apply to this part.

GB/T 2423.1 Environmental testing for electric and electronic and electronic products - Part 2: Test methods - Tests A: Cold (GB/T 2423.1-2001, IEC 60068-2-1: 1990, IDT)
GB/T 2423.2-2001 Environmental testing for electric and electronic products - Part 2: Test methods - Test B: Dry heat (IEC 60068-2-2:1974, IDT)
GB/T 2424.1-2005 Environmental testing for electric and electronic products - Guidance for high temperature and low temperature tests (IEC 60068-3-1: 1974 and IEC 60068-3-1A: 1978, IDT)
GB/T 2424.5-2006 Environmental tests for electric and electronic products - Confirmation of the performance of temperature chambers (IEC 60068-3-5: 2001, IDT)
GB/T 2424.6-2006 Environmental testing for electric and electronic products - Confirmation of the performance of temperature/humidity chambers (IEC 60068-3-6: 2001, IDT)
GB/T 16839.1 Thermocouples - Part 1: Reference tables (GB/T 16839.1-1997, IEC 60584-1: 1995, IDT)
IEC 60751 Industrial platinum resistance thermometer sensors

3 Terms and definitions

For the purposes of this part, the following terms and definitions apply.

3.1
test specification
procedure applied to test chambers with or without forced air circulation; suitable for a wide range of chamber sizes

Note: a summary of test conditions in GB/T 2423.1 and GB/T 2423.2 is given in Table 1.

Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Measuring system
5 Determination of temperature performances
6 Test procedures
7 Evaluation criteria
8 Information to be given in the performance report