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  • PD IEC/TS 62997:2017

    Current The latest, up-to-date edition.

    Industrial electroheating and electromagnetic processing equipment. Evaluation of hazards caused by magnetic nearfields from 1 Hz to 6 MHz

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  18-09-2017

    Publisher:  British Standards Institution

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    Table of Contents - (Show below) - (Hide below)

    FOREWORD
    INTRODUCTION
    1 Scope
    2 Normative references
    3 Terms, definitions, symbols and abbreviated terms
    4 Organisation and use of the technical specification
    5 The basic relationship for determination of the in situ
      induced electric field
    6 Requirements related to immediate nerve and muscle
      reactions
    7 Requirements related to body tissue overheating
    8 Calculations and numerical computations of induced
      E field and SAR by magnetic nearfields: inaccuracies,
      uncertainties and safety factors
    9 Risk group classification and warning marking
    Annex A (informative) - Survey of basic restrictions,
            reference levels in other standards, etc.
    Annex B (normative) - Analytical calculations of
            magnetically induced internal E field phenomena
    Annex C (normative) - Reference objects representing
             parts of the body: tissue conductivities
    Annex D (informative) - Results of numerical modelling
            with objects in a Helmholtz coil and at a long
            straight conductor
    Annex E (informative) - Numerical FDTD modelling
            with objects at a long straight wire conductor
    Annex F (informative) - Numerical modelling and
            volunteer experiments with the hand models
            at a coil
    Annex G (informative) - Some examples of CGCR
            values of a hand near conductors as function
            of frequency, conductor current and configuration
    Annex H (informative) - Frequency upscaling with
            numerical modelling
    Bibliography

    Abstract - (Show below) - (Hide below)

    Describes the characteristics of external magnetic nearfields, computations of and requirements on induced electric fields in body tissues in the frequency range from 1 Hz to 6 MHz with respect to induced electric shock phenomena, for electroheating (EH) based treatment technologies and for electromagnetic processing of materials (EPM).

    Scope - (Show below) - (Hide below)

    This IEC technical specification specifies the characteristics of external magnetic nearfields, computations of and requirements on induced electric fields in body tissues in the frequency range from 1 Hz to 6 MHz with respect to induced electric shock phenomena, for electroheating (EH) based treatment technologies and for electromagnetic processing of materials (EPM). The phenomena include specific absorption rates with time integration.

    NOTE The overall safety requirements for the various types of equipment and installations for electroheating or electromagnetic processing in general result from the joint application of the General Requirements specified in IEC 60519-1:2015 and Particular Requirements covering specific types of installations or equipment. This technical specification complements the General Requirements and applies to internal frequency converters for creating high or low DC voltages, and to processing frequencies.

    Induced electric shock phenomena dealt with in this technical specification are caused by the alternating magnetic nearfield external to a current-carrying conductor or permeable object, inducing an electric field in a part of the body in the vicinity of the conductor.

    Relaxed criteria compared with the general basic restrictions for exposure apply. Simplified hazard assessment procedures apply for situations when only fingers, hands and/or extremities are in the magnetic nearfield.

    This technical specification does not apply to equipment within the scope of IEC 60519-9. i.e. equipment or installations for high frequency dielectric heating.

    General Product Information - (Show below) - (Hide below)

    Committee PEL/27
    Document Type Standard
    Publisher British Standards Institution
    Status Current

    Standards Referencing This Book - (Show below) - (Hide below)

    EN 50445:2008 Product family standard to demonstrate compliance of equipment for resistance welding, arc welding and allied processes with the basic restrictions related to human exposure to electromagnetic fields (0 Hz - 300 GHz)
    IEC 62209-2:2010 Human exposure to radio frequency fields from hand-held and body-mounted wireless communication devices - Human models, instrumentation, and procedures - Part 2: Procedure to determine the specific absorption rate (SAR) for wireless communication devices used in close proximity to the human body (frequency range of 30 MHz to 6 GHz)
    IEC 62479:2010 Assessment of the compliance of low-power electronic and electrical equipment with the basic restrictions related to human exposure to electromagnetic fields (10 MHz to 300 GHz)
    IEC 60519-6:2011 Safety in electroheat installations - Part 6: Specifications for safety in industrial microwave heating equipment
    IEC TS 62996:2017 Industrial electroheating and electromagnetic processing equipment - Requirements on touch currents, voltages and electric fields from 1 kHz to 6 MHz
    EN 50444:2008 Basic standard for the evaluation of human exposure to electromagnetic fields from equipment for arc welding and allied processes
    IEEE C95.1-2005 IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields, 3 kHz to 300 GHz
    IEC 60050-841:2004 International Electrotechnical Vocabulary (IEV) - Part 841: Industrial electroheat
    IEC 62226-2-1:2004 Exposure to electric or magnetic fields in the low and intermediate frequency range - Methods for calculating the current density and internal electric field induced in the human body - Part 2-1: Exposure to magnetic fields - 2D models
    IEEE C95.6-2002 IEEE Standard for Safety Levels With Respect to Human Exposure to Electromagnetic Fields, 0-3 kHz
    IEC 61140:2016 Protection against electric shock - Common aspects for installation and equipment
    IEEE C95.1A : 2010 SAFETY LEVELS WITH RESPECT TO HUMAN EXPOSURE TO RADIO FREQUENCY ELECTROMAGNETIC FIELDS, 3 KHZ TO 300 GHZ - AMENDMENT 1: SPECIFIES CEILING LIMITS FOR INDUCED AND CONTACT CURRENT, CLARIFIES DISTINCTIONS BETWEEN LOCALIZED EXPOSURE AND SPATIAL PEAK POWER DENSITY
    IEC 60519-9:2005 Safety in electroheat installations - Part 9: Particular requirements for high-frequency dielectric heating installations
    IEC 62822-2:2016 Electric welding equipment - Assessment of restrictions related to human exposure to electromagnetic fields (0 Hz to 300 GHz) - Part 2: Arc welding equipment
    IEC 60519-1:2015 Safety in installations for electroheating and electromagnetic processing - Part 1: General requirements
    IEC TS 60479-2:2007 Effects of current on human beings and livestock - Part 2: Special aspects
    IEC 62110:2009 Electric and magnetic field levels generated by AC power systems - Measurement procedures with regard to public exposure
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