GB 21288-2022 PDF English
US$125.00 · In stock · Download in 9 secondsGB 21288-2022: Limits for human exposure to electromagnetic fields emitted by mobile communication terminals Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedureStatus: Valid GB 21288: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivery | Name of Chinese Standard | Status |
| GB 21288-2022 | English | 125 |
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Limits for human exposure to electromagnetic fields emitted by mobile communication terminals
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| GB 21288-2007 | English | 239 |
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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... 10
Foreword
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.
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