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
Hardcopy , PDF
English
18-09-2017
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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
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).
| Committee |
RHE/24
|
| DocumentType |
Standard
|
| Pages |
0
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
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.
| Standards | Relationship |
| IEC TS 62997:2017 | Identical |
| 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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