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GB/T 30842-2014 English PDF

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GB/T 30842-2014: Electromagnetic shielding effectiveness specification and measuring method for high voltage testing enclosures
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Basic data

Standard ID GB/T 30842-2014 (GB/T30842-2014)
Description (Translated English) Electromagnetic shielding effectiveness specification and measuring method for high voltage testing enclosures
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard L06
Classification of International Standard 33.100
Word Count Estimation 24,238
Date of Issue 6/24/2014
Date of Implementation 1/22/2015
Quoted Standard GB/T 4365; DL/T 475
Regulation (derived from) National Standards Bulletin No. 14 of 2014
Issuing agency(ies) General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China
Summary This standard specifies the internal 10 kHz ~ 3 GHz frequency range of the high-pressure chamber shielding effectiveness test requirements and methods of measurement. Also be extended to the frequency of 10 GHz. This standard applies to the evaluation and

GB/T 30842-2014: Electromagnetic shielding effectiveness specification and measuring method for high voltage testing enclosures


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Electromagnetic shielding effectiveness specification and measuring method for high voltage testing enclosures ICS 33.100 L06 National Standards of People's Republic of China High voltage test chamber electromagnetic shielding effectiveness Requirements and methods of measurement Issued on. 2014-06-24 2015-01-22 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Table of Contents

Introduction Ⅲ 1 Scope 1 2 Normative references 1 3 Terms and definitions 4 high voltage test chamber shielding effectiveness in claim 1 4.1 Category 1 high voltage test chamber 4.2 high-pressure test chamber shielding effectiveness in claim 1 4.3 high voltage test chamber insulation resistance, grounding resistance requirements 3 5 General requirements 3 5.1 Measurement Environmental Requirements 3 5.2 Measurement equipment and antennas 3 5.3 Measurement frequency 4 5.4 Calculation of shielding effectiveness 5 Shielding effectiveness 6 high voltage test chamber measuring 6 6.1 measured high voltage test chamber claim 6 6.2 high-pressure test chamber shielding effectiveness measurement method 6 6.3 high voltage electric field shielding attenuation measurement laboratory 14 6.4 measurements determined 14 Requirements and measurement methods in Appendix A (normative) high-voltage test chamber insulation resistance, grounding resistance 15 Annex B (informative) high-voltage electric field shielding attenuation measurement laboratory 17 Annex C (informative) on high voltage test chamber 19 Description Classification References 20

Foreword

This standard was drafted in accordance with GB/T 1.1-2009 given rules. The EMC standard by the National Standardization Technical Committee (SAC/TC246) and focal points. This standard was drafted. China Aerospace Science and Industry Corporation II Hospital 2 ○-three, China Electric Power Research Institute, Changzhou New District Leader of electrons Ltd., Changzhou City, the Great Wall shielded room Equipment Co., Ltd., a long screen (Beijing) Technology Co., Ltd. electromagnetic protection. The main drafters of this standard. Wu Hongsen, Wu Hung, Shen Tao, Zhang Jiangong, Han Yufeng, Li Ni, Li Zhizhen, Lele Zhou, Cai Pengfei, Xu Guoying. High voltage test chamber electromagnetic shielding effectiveness Requirements and methods of measurement

1 Scope

This standard specifies the internal 10kHz ~ 3GHz frequency range of high voltage test chamber shielding effectiveness requirements and methods of measurement. Frequency can be expanded Exhibition to 10GHz. This standard applies to the evaluation and measurement of high voltage laboratory electromagnetic shielding effectiveness.

2 Normative references

The following documents for the application of this document is essential. For dated references, only the dated version suitable for use herein Member. For undated references, the latest edition (including any amendments) applies to this document. GB/T 4365 Electrotechnical terminology Electromagnetic Compatibility DL/T 475 grounding device parameter measurement guidelines

3 Terms and Definitions

GB/T 4365 defined by the following terms and definitions apply to this document. 3.1 Shielding effectiveness shieldingeffectiveness To shield electromagnetic wave isolation or limit the ability of the measure. Usually expressed as a ratio of the magnitude of the incident and transmitted wave, expressed in decibels. 3.2 High voltage test chamber highvoltagetestingenclosure High voltage test chamber is an electromagnetic shield with facilities specially designed for high-voltage power equipment testing. 3.3 High-voltage laboratory test area testingareaofhighvoltagetestingenclosure High voltage test chamber for placing the device under test and the test region.

4 high voltage test chamber shielding effectiveness requirements

4.1 Classification high voltage test chamber High voltage test chamber is divided into four categories according to use, classification described in Appendix C. 4.2 high-pressure test chamber shielding effectiveness requirements High voltage test chamber shielding effectiveness requirements of Table 1.

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