GB 21288-2022 English PDF
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GB 21288: Historical versions
| Standard ID | USD | BUY PDF | Delivery | Standard Title (Description) | Status |
| GB 21288-2022 | 125 | Add to Cart | Auto, 9 seconds. | Limits for human exposure to electromagnetic fields emitted by mobile communication terminals | Valid |
| GB 21288-2007 | 239 | Add to Cart | 2 days | Limits for human local exposure to electromagnetic fields emitted by mobile phones | Obsolete |
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GB 21288-2022: Limits for human exposure to electromagnetic fields emitted by mobile communication terminals
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GB21288-2022
GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 13.280 CCS C 71 Replacing GB 21288-2007 Limits for human exposure to electromagnetic fields emitted by mobile communication terminals Issued on. DECEMBER 29, 2022 Implemented on. JANUARY 1, 2024 Issued by. State Administration for Market Regulation; Standardization Administration of PRC.
Table of Contents
Foreword... 3 Introduction... 4 1 Scope... 5 2 Normative references... 5 3 Terms and definitions... 5 4 Abbreviations... 7 5 Basic limits for exposure to electromagnetic radiation... 7 6 Labeling requirements... 10Foreword
This document was drafted in accordance with the provisions of GB/T 1.1-2020 Directives for standardization - Part 1.Rules for the structure and drafting of standardizing documents. This document replaces GB 21288-2007 Limits for human local exposure to electromagnetic fields emitted by mobile phones. Compared with GB 21288-2007, except for the structural adjustment and editorial revisions, the main technical changes are as follows. -- The name of the document is changed from “Limits for human local exposure to electromagnetic fields emitted by mobile phones” to “Limits for human exposure to electromagnetic fields emitted by mobile communication terminals”; -- The scope of application is changed from “mobile phones used close to the head” to “mobile communication terminal equipment operating at 100 kHz~300 GHz and within 20 cm of the human body during use, such as mobile phones, cordless group telephones, satellite mobile terminals, wearable devices, and portable mobile terminals” (see Chapter 1); -- The definition of occupational exposure is added (see 3.2); -- The definition of absorbed power density is added (see 3.5); -- The exposure limits applicable to different frequencies and different body parts are added (see Chapter 5); -- The labeling content in the product manual is changed, and the annotation to the product manual is added (see Chapter 6; see Chapter 4 of the 2007 edition). This document was proposed and shall be under the jurisdiction of the Ministry of Industry and Information Technology of the People’s Republic of China. The publication of previous versions of this document and the documents it replaces are as follows. -- In 2007, it was first released as GB 21288-2007; -- This is the first revision.1 Scope
This document specifies limits for exposure to electromagnetic radiation of mobile communication terminals connected to public telecommunication networks. This document is applicable to mobile communication terminal equipment operating at 100 kHz~300 GHz and within 20 cm of the human body during use. NOTE. The mobile communication terminal equipment involved in this document includes but is not limited to mobile phones, cordless group telephones, satellite mobile terminals, wearable devices, portable mobile terminals, etc.2 Normative references
This document has no normative references.3 Terms and definitions
The following terms and definitions apply to this document. 3.1 public exposure Under uncontrolled conditions, the exposure that is undergone by individuals, who are of various ages, in different health conditions, not aware of the occurrence of exposure and the harm to their bodies, and cannot effectively take protective measures. 3.3 electromagnetic radiation The phenomenon in which energy is emitted from a source into space in the form of electromagnetic waves. 3.4 specific absorption rate SAR It is electromagnetic wave energy (dW) absorbed by biological tissue per unit time (dt) and unit mass (dm or ρdV), as shown in formula (1).4 Abbreviations
The following abbreviation applies to this document.5 Basic limits for exposure to electromagnetic radiation
5.1 Basic limits for exposure to electromagnetic radiation of mobile communication terminals 5.2 Public exposure 5.2.1 In the frequency range of 100 kHz~6 GHz, the average specific absorption rate (SAR) of local exposure (head and torso) of any 10 g tissue and any continuous 6 min shall not exceed 2 W/kg. 5.2.2 In the frequency range of 100 kHz~6 GHz, the average specific absorption rate (SAR) of local exposure (limbs) of any 10 g tissue and any continuous 6 min should not exceed 4 W/kg. 5.3 Occupational exposure 5.3.1 In the frequency range of 100 kHz~6 GHz, the average specific absorption rate (SAR) of local exposure (head and torso) of any 10 g tissue and any continuous 6 min shall not exceed 10 W/kg. 5.4 Total exposure ratio When there is public and occupational exposure to multiple frequencies of electric fields, magnetic fields, and electromagnetic fields, it shall be comprehensively calculated whether the exposure to multiple frequencies of electric fields, magnetic fields, and electromagnetic fields has a superimposed effect. When there is a superposition effect, the requirements of formula (6) shall be met within the frequency range of 100 kHz~300 GHz.6 Labeling requirements
6.1 For the applicable exposure state1) of the product, the product identification shall meet the following requirements. 6.2 The product instructions shall indicate the matters that users of cardiac pacemakers, hearing aids, cochlear implants, etc. shall pay attention to when using this product. 1) Refer to product standards for applicable exposure states, such as the series of standards for electromagnetic radiation compliance of mobile communication terminal equipment. ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
