Relatórios técnicos
712, 2021
| Título | Evaluation of human exposure to electromagnetic fields from short range devices (SRDs) in various applications over the frequency range 0 GHz to 300 GHz – Part 1: Fields produced by devices used for electronic article |
| Resumo | EC 62369-1:2008 presents procedures for the evaluation of human exposure to electromagnetic fields (EMFs) from devices used in electronic article surveillance (EAS), radio frequency identification (RFID) and similar applications. It adopts a staged approach to facilitate compliance assessment. The first stage (Stage 1) is a simple measurement against the appropriate derived reference values. Stage 2 is a more complex series of measurements or calculations, coupled with analysis techniques. Stage 3 requires detailed modelling and analysis for comparison with the basic restrictions. When assessing any device, the most appropriate method for the exposure situation may be used. At the time of writing this International Standard, electronic article surveillance, radio frequency identification and similar systems do not normally operate at frequencies below 1 Hz or above 10 GHz. EMF exposure guidelines and standards can cover a wider range of frequencies, so clarification on the required range is included as part of the evaluation procedures. The devices covered by this document normally have non-uniform field patterns. Often these devices have a very rapid reduction of field strength with distance and operate under near-field conditions where the relationship between electric and magnetic fields is not constant. This, together with typical exposure conditions for different device types, is detailed in Annex A. Annex B contains comprehensive information to assist with numerical modelling of the exposure situation. It includes both homogeneous and anatomical models as well as the electrical properties of tissue. IEC 62369-1:2008 does not include limits. Limits can be obtained from separately published human exposure guidelines. Different guidelines and limit values may apply in different regions. Linked into the guidelines are usually methods for summation across wider frequency ranges and for multiple exposure sources. These shall be used. A simplified method for summation of multiple sources is contained in Annex C. This has to be used with care as it is simplistic and will overestimate the exposure; however it is useful as a guide, when the results of different evaluations are in different units of measure which are not compatible. Different countries and regions have different guidelines for handling the uncertainties from the evaluation. Annex D provides information on the two most common methods. |
| Fonte | CENELEC |
| Origem | Internacional |
| Autor/Editor | TC 106X – Electromagnetic fields in the human environment |
| Disponibilidade | Disponível por encomenda |
| Endereço | https://standards.cencenelec.eu/dyn/www/f?p=CENELEC:110:::::FSP_PROJECT,FSP_ORG_ID:44010,1258483&cs=1F07586A693E67D3AC006CB0DD262FDD7 |
| Referência | EN 62369-1:2009 |
| Data | 2009 |
712, 2021
| Título | Electric and magnetic field levels generated by AC power systems – Measurement procedures with regard to public exposure |
| Resumo | IEC 62110:2009 establishes measurement procedures for electric and magnetic field levels generated by AC power systems to evaluate the exposure levels of the human body to these fields. This standard is not applicable to DC power transmission systems. IEC 62110:2009 is applicable to public exposure in the domestic environment and in areas accessible to the public. It specifies fundamental procedures for the measurement of fields, and, with regard to human exposure, for obtaining a field value that corresponds to a spatial average over the entire human body. IEC 62110:2009 is not applicable to occupational exposure associated with, for example, the operation and/or maintenance of the power systems. Such exposure may occur when working inside a distribution or transmission substation, a power plant, in a manhole or a tunnel for underground cables, or on an overhead line tower or pole. |
| Fonte | CENELEC |
| Origem | Internacional |
| Autor/Editor | TC 106X – Electromagnetic fields in the human environment |
| Disponibilidade | Disponível por encomenda |
| Endereço | https://standards.cencenelec.eu/dyn/www/f?p=CENELEC:110:::::FSP_PROJECT,FSP_ORG_ID:57908,1258483&cs=1356F5498D7270067CCDA3CAB90B72569 |
| Referência | EN 62110:2009 |
| Data | 2009 |
712, 2021
| Título | Procedure for the assessment of the exposure of workers to electromagnetic fields |
| Resumo | The scope of this document is to provide a general procedure for the assessment of workers’ exposure to electric, magnetic and electromagnetic fields in a workplace in order to determine compliance with exposure limit values and/or action levels as stated in European Directive 2013/35/EU. The purpose of this document is to:— specify how to perform an initial assessment of the levels of workers’ exposure to electromagnetic fields (EMF), if necessary, including specific exposure assessment of such levels by measurements and/or calculations;— determine whether it is necessary to carry out a detailed risk assessment of EMF exposure. This document can be used by employers for the risk assessment and, where required, measurement and/or calculation of the exposure of workers. Based on specific workplace and other standards, it can be determined whether preventive measures/actions have to be taken to comply with the provisions of the Directive. The frequencies covered are from 0 Hz to 300 GHz. |
| Fonte | CENELEC |
| Origem | Internacional |
| Autor/Editor | TC 106X – Electromagnetic fields in the human environment |
| Disponibilidade | Disponível por encomenda |
| Endereço | https://standards.cencenelec.eu/dyn/www/f?p=CENELEC:110:::::FSP_PROJECT,FSP_ORG_ID:49277,1258483&cs=1ABEF383B1014A3401CDA6D284BAE2FB3 |
| Referência | EN 50499:2008 |
| Data | 2008 |
712, 2021
| Título | Assessment of electronic and electrical equipment related to human exposure restrictions for electromagnetic fields (0 Hz – 300 GHz) |
| Resumo | This document applies to electronic and electrical equipment for which no dedicated product standard or product family standard regarding human exposure to electromagnetic fields applies. It covers equipment with intentional or non-intentional radiators as well as a combination thereof. This document provides assessment methods and criteria to evaluate equipment against limits on exposure of people related to electric, magnetic and electromagnetic fields. The frequency range covered is from 0 Hz to 300 GHz. This document does not specify limits expressed by means of basic restrictions and/or reference levels. Such limits are subject to the applied assessment scheme, for example by means of regional limits. |
| Fonte | CENELEC |
| Origem | Internacional |
| Autor/Editor | TC 106X – Electromagnetic fields in the human environment |
| Disponibilidade | Disponível por encomenda |
| Endereço | https://standards.cencenelec.eu/dyn/www/f?p=CENELEC:110:::::FSP_PROJECT,FSP_ORG_ID:50031,1258483&cs=19720C3E3F7827C5CB058B7B9F0DADBE1 |
| Referência | EN 62311:2008 |
| Data | 2008 |
712, 2021
| Título | Basic standard for the calculation and the measurement of human exposure to electromagnetic fields from broadcasting service transmitters in the HF bands (3 MHz – 30 MHz) |
| Resumo | This standard applies to short wave broadcast transmitters and installations operating in the frequency range 3 MHz to 30 MHz. The objective of the standard is to specify, for such a frequency band, basic information allowing the definition of a method for assessment of compliance related to human exposure to radio frequency electromagnetic fields. |
| Fonte | CENELEC |
| Origem | Internacional |
| Autor/Editor | TC 106X – Electromagnetic fields in the human environment |
| Disponibilidade | Disponível por encomenda |
| Endereço | https://standards.cencenelec.eu/dyn/www/f?p=CENELEC:110:::::FSP_PROJECT,FSP_ORG_ID:57902,1258483&cs=17CD110F230EF5E0F2E2C0F56E07DBB63 |
| Referência | EN 50475:2008 |
| Data | 2008 |