{"id":255401,"date":"2024-10-19T16:53:01","date_gmt":"2024-10-19T16:53:01","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bsi-pd-iec-ts-629972017\/"},"modified":"2024-10-25T12:20:23","modified_gmt":"2024-10-25T12:20:23","slug":"bsi-pd-iec-ts-629972017","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bsi-pd-iec-ts-629972017\/","title":{"rendered":"BSI PD IEC\/TS 62997:2017"},"content":{"rendered":"
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.<\/p>\n
\nNOTE 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.<\/p>\n<\/blockquote>\n
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.<\/p>\n
Relaxed criteria compared with the general basic restrictions<\/b> for exposure apply. Simplified hazard assessment procedures apply for situations when only fingers, hands and\/or extremities are in the magnetic nearfield.<\/p>\n
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.<\/p>\n
PDF Catalog<\/h4>\n
\n
\n PDF Pages<\/th>\n PDF Title<\/th>\n<\/tr>\n \n 2<\/td>\n National foreword <\/td>\n<\/tr>\n \n 4<\/td>\n CONTENTS <\/td>\n<\/tr>\n \n 9<\/td>\n FOREWORD <\/td>\n<\/tr>\n \n 11<\/td>\n INTRODUCTION <\/td>\n<\/tr>\n \n 13<\/td>\n 1 Scope
2 Normative references
3 Terms, definitions, symbols and abbreviated terms
3.1 Terms and definitions <\/td>\n<\/tr>\n\n 16<\/td>\n 3.2 Quantities and units <\/td>\n<\/tr>\n \n 17<\/td>\n 4 Organisation and use of the technical specification <\/td>\n<\/tr>\n \n 18<\/td>\n 5 The basic relationship for determination of the in situ induced electric field
6 Requirements related to immediate nerve and muscle reactions
6.1 General <\/td>\n<\/tr>\n\n 19<\/td>\n 6.2 Method using the conductor geometry and current restriction (CGCR) <\/td>\n<\/tr>\n \n 20<\/td>\n 6.3 Volunteer test method
6.3.1 Volunteer basic test method <\/td>\n<\/tr>\n\n 21<\/td>\n 6.3.2 Method based on volunteer tests and similarity with pre-existing scenario
6.3.3 Method based on volunteer tests, using available elevated conductor current or shorter distance between the conductor and bodypart
6.3.4 Method using magnetic nearfield reference levels (RLs)
7 Requirements related to body tissue overheating
7.1 General <\/td>\n<\/tr>\n\n 22<\/td>\n 7.2 Intermittent conditions with 6 minutes time integration <\/td>\n<\/tr>\n \n 23<\/td>\n 7.3 Intermittent conditions in fingers and hands with shorter integration times
8 Calculations and numerical computations of induced E field and SAR by magnetic nearfields: inaccuracies, uncertainties and safety factors
8.1 Principles for handling levels of safety \u2013 general <\/td>\n<\/tr>\n\n 24<\/td>\n 8.2 The C value variations with B field curvature
8.3 Location of parts of the body, instrumentation and measurement issues
8.4 Handling of inaccuracies of in situ E field and SAR numerical values <\/td>\n<\/tr>\n\n 25<\/td>\n 8.5 Approaches to compliance
8.5.1 General
8.5.2 Cases where verification of levels being below the RL is sufficient
8.5.3 Cases where only B flux measurements are sufficient
8.5.4 Cases where the volunteer test method is applicable
8.5.5 Cases where the CGCR method is applicable <\/td>\n<\/tr>\n\n 26<\/td>\n 8.5.6 Cases where numerical modelling is carried out
8.6 Summary of inaccuracy\/uncertainty factors to be considered
9 Risk group classification and warning marking
9.1 General <\/td>\n<\/tr>\n\n 27<\/td>\n 9.2 Induced electric fields from 1 Hz to 1 kHz
9.3 Induced electric fields from 1 kHz to 100 kHz
9.4 Induced electric fields from 100 kHz to 6 MHz
9.5 Magnetic flux fields from 1 Hz to 6 MHz
9.6 Warning marking <\/td>\n<\/tr>\n\n 28<\/td>\n Figures
Figure 1 \u2013 Examples of warning marking <\/td>\n<\/tr>\n\n 29<\/td>\n Annex A (informative) Survey of basic restrictions, reference levels in other standards, etc.
A.1 Basic restrictions \u2013 general and deviations
A.2 The coupling values C in ICNIRP guidelines and IEEE standards <\/td>\n<\/tr>\n\n 30<\/td>\n A.3 Basic restrictions \u2013 immediate nerve and muscle reactions
Figure A.1 \u2013 ICNIRP, IEEE and 2013\/35\/EU basic restrictions (RMS) <\/td>\n<\/tr>\n\n 31<\/td>\n A.4 Basic restrictions \u2013 specific absorption rates (SAR)
A.5 Reference levels \u2013 external magnetic B field <\/td>\n<\/tr>\n\n 32<\/td>\n Annex B (normative) Analytical calculations of magnetically induced internal E field phenomena
B.1 Some basic formulas \u2013 magnetic fields and Laws of Nature <\/td>\n<\/tr>\n\n 33<\/td>\n B.2 Induced field deposition in tissues by magnetic nearfields
B.3 Coupling of a homogeneous B field to homogeneous objects with simple geometries <\/td>\n<\/tr>\n\n 34<\/td>\n B.4 Starting points for numerical modelling
B.4.1 Relevant bodyparts
B.4.2 The use of external B field and internal power density in numerical modelling <\/td>\n<\/tr>\n\n 35<\/td>\n Annex C (normative) Reference objects representing parts of the body: tissue conductivities
C.1 Reference bodyparts
C.1.1 General
C.1.2 The wrist\/arm models
C.1.3 The hand model with tight fingers
C.1.4 The hand model with spread-out fingers
C.1.5 The finger model
C.2 Dielectric properties of human tissues
C.2.1 General data for assessments <\/td>\n<\/tr>\n\n 36<\/td>\n C.2.2 Inner parts of the body
C.2.3 Skin data
Tables
Table C.1 \u2013 Examples of dielectric data of human tissues at normal body temperature <\/td>\n<\/tr>\n\n 37<\/td>\n Annex D (informative) Results of numerical modelling with objects in a Helmholtz coil and at a long straight conductor
D.1 General and a large Helmholtz coil scenario with a diameter 200 mm sphere \u2013 FDTD 3D modelling <\/td>\n<\/tr>\n\n 38<\/td>\n D.2 Other reference objects in the Helmholtz coil \u2013 FDTD 3D modelling
D.2.1 The scenario
D.2.2 Numerical modelling results with smaller spheres
Figure D.1 \u2013 The z-directed magnetic field momentaneous maximal amplitude in the central y plane of the Helmholtz coil with the conductive 200 mm diameter sphere
Figure D.2 \u2013 The power density patterns in the central y plane (left) and central z (equatorial) plane of the 200 mm diameter sphere <\/td>\n<\/tr>\n\n 39<\/td>\n D.2.3 Numerical results with other objects
Figure D.3 \u2013 The power density patterns in the central z planeof the reference objects, with maximal C values in m <\/td>\n<\/tr>\n\n 40<\/td>\n Annex E (informative) Numerical FDTD modelling with objects at a long straight wire conductor
E.1 Scenario and general information
Figure E.1 \u2013 Long straight wire scenario <\/td>\n<\/tr>\n\n 41<\/td>\n E.2 Two 200 mm diameter spheres
Figure E.2 \u2013 Power deposition patterns in the central z planes of the two spheres at 10\u00a0mm and 20\u00a0mm away from the sphere axis; \u03c3\u00a0= 20 Sm\u20131
Figure E.3 \u2013 Power deposition pattern in the central y plane of the sphere at 10\u00a0mm distance from the wire axis; \u03c3 = 20 Sm\u20131 <\/td>\n<\/tr>\n\n 42<\/td>\n E.3 The hand model with tight fingers at different distances from the wire \u2013 FDTD modelling
E.3.1 General information and scenario
E.3.2 Modelling results \u2013 power deposition patterns
Figure E.4 \u2013 Scenario with the hand model above the wire axis
Figure E.5 \u2013 Power density in the hand model 2,5 mm above the wire axis <\/td>\n<\/tr>\n\n 43<\/td>\n Figure E.6 \u2013 Power density in the hand model 14 mm above the wire axis
Figure E.7 \u2013 Power density in the hand model 100 mm above the wire axis <\/td>\n<\/tr>\n\n 44<\/td>\n E.4 The hand model with tight fingers at 100 mm from the wire \u2013 Flux\u00ae 122F FEM modelling
E.5 Coupling data and analysis for the hand model with tight fingers above the wire \u2013 FDTD modelling
Figure E.8 \u2013 Current density in the central cross section of the hand model at 9 mm from the wire \u2013 Flux\u00ae 12 FEM modelling
Table E.1 \u2013 Coupling factors for the hand model with tight fingers at various heights above the wire axis <\/td>\n<\/tr>\n\n 45<\/td>\n E.6 Coupling data and analysis for the wrist\/arm model above the wire
Figure E.9 \u2013 Wrist\/arm model above a long straight wire
Figure E.10 \u2013 Linear power density (left, power scaling) and electric field amplitude (linear scale) in the x plane of wrist\/arm model 10 mm straight above a long straight wire <\/td>\n<\/tr>\n\n 47<\/td>\n Annex F (informative) Numerical modelling and volunteer experiments with the hand models at a coil
F.1 General and on the B field amplitude
Figure F.1 \u2013 Illustration of the B field at a single turn coil, with the coil centre at the left margin of the image \u2013 Flux\u00ae 12 FEM modelling <\/td>\n<\/tr>\n\n 48<\/td>\n F.2 The hand model with tight fingers 2 mm, 4 mm, 6 mm and 50 mm above the coil and with its right side above the coil axis \u2013 FDTD modelling
F.2.1 The scenario
Figure F.2 \u2013 Hand above the coil scenario <\/td>\n<\/tr>\n\n 49<\/td>\n F.2.2 Modelling results
Figure F.3 \u2013 Power density pattern in the central vertical plane and in the bottom 1\u00a0mm layer of the hand model, z = 2 mm above the top of the coil; a = \u201351 mm
Figure F.4 \u2013 Power density pattern in the central vertical plane and in the bottom 1\u00a0mm layer of the hand model, z = 4 mm; a = \u201351 mm <\/td>\n<\/tr>\n\n 50<\/td>\n Figure F.5 \u2013 Power density pattern in the central vertical plane and in the bottom 1\u00a0mm layer of the hand model, z = 50 mm; a = \u201351 mm <\/td>\n<\/tr>\n \n 51<\/td>\n Figure F.6 \u2013 The \u00b1x-directed (left image) and \u00b1y-directed momentaneous maximal E field at the hand underside, z = 4 mm; a = \u201351 mm <\/td>\n<\/tr>\n \n 52<\/td>\n Figure F.7 \u2013 The local power density pattern of the condition in Figure F.3,showing the 1 mm \u00d7 1 mm voxel size and the 5 mm2 integrationregion 2 mm above the hand underside
Figure F.8 \u2013 The local y-directed momentaneous maximal electric field patternof the condition in Figure F.3, showing the 1 mm \u00d7 1 mm voxel size andthe 5 mm2 integration region 2 mm above the hand underside <\/td>\n<\/tr>\n\n 53<\/td>\n F.3 The hand model with tight fingers 6 mm above the coil and with variable position in the x direction \u2013 FDTD modelling
F.4 The hand model with spread-out fingers, 6 mm straight above the coil \u2013 FDTD modelling
Figure F.9 \u2013 The power density pattern in the hand model centred above the coil and 6\u00a0mm above it; left image: bottom region, right image: 10 mm up
Figure F.10 \u2013 The hand model with spread-out fingers located 6 mm straight above the coil (left); relative power densities at the height of maximum power density between fingers (right) <\/td>\n<\/tr>\n\n 54<\/td>\n F.5 The hand model with tight fingers near a coil with metallic workload \u2013 FDTD modelling
Figure F.11 \u2013 The hand model 6 mm above the coil and a 100 mm diametermetallic workload in the coil
Figure F.12 \u2013 Quiver plot of the magnetic (H) field amplitude in logarithmic scaling,in the scenario in Figure F.11 with a non-magnetic (left) and magnetic (right) workload <\/td>\n<\/tr>\n\n 55<\/td>\n Figure F.13 \u2013 The power density pattern in the central vertical crosssection in the hand scenario in Figure F.11
Figure F.14 \u2013 The power density in the central vertical cross section of the handas in the scenario in Figure F.11, but 50 mm above the coil; with no workload (left)and with permeable metallic workload (right) <\/td>\n<\/tr>\n\n 56<\/td>\n F.6 The finger model 2 mm above the coil \u2013 FDTD numerical modelling
F.6.1 The scenarios
F.6.2 Modelling results
Figure F.15 \u2013 The two finger positions above the coil; left = y-directed finger
Figure F.16 \u2013 Power density maximum pattern in the y-directed17 mm diameter finger model <\/td>\n<\/tr>\n\n 57<\/td>\n Figure F.17 \u2013 Power density maximum pattern in the x-directed17 mm diameter finger model
Figure F.18 \u2013 Momentaneous maximal electric field maximumpattern in the x-directed 17 mm diameter finger model <\/td>\n<\/tr>\n\n 58<\/td>\n F.7 Analysis of the FDTD modelling results
F.7.1 General
F.7.2 With the hand model
F.7.3 With the finger model
F.8 Volunteer studies
F.8.1 General <\/td>\n<\/tr>\n\n 59<\/td>\n F.8.2 Calculations of the induced electric field strength in F.7.1
F.9 Comparisons with conventional electric shock effects by contact current
Figure F.19 \u2013 Plastic plate above the coil <\/td>\n<\/tr>\n\n 60<\/td>\n F.10 Conclusions from the data in Annexes E and F
F.10.1 Coupling factor C data in relation to reference object geometries and magnetic flux characteristics without workload
F.10.2 Coupling factor C modifications by workloads
F.10.3 Rationales for the CGCR basic value with the volunteer method <\/td>\n<\/tr>\n\n 62<\/td>\n Annex G (informative) Some examples of CGCR values of a hand near conductors as function of frequency, conductor current and configuration
G.1 Frequency and conductor current relationships: adopted CGCR value
G.2 A hand above a thin wire
Figure G.1 \u2013 Allowed RMS current at 11 kHz, based on CGCR = 40 Vm\u20131 <\/td>\n<\/tr>\n\n 63<\/td>\n G.3 A hand above a coil
Table G.1 \u2013 Coupling factors and allowed coil currents at 11 kHz for the hand model with the side at the coil axis, at various heights above the coil <\/td>\n<\/tr>\n\n 64<\/td>\n Figure G.2 \u2013 CGCR coil currents at 11 kHz for the hand model with the sideat the coil axis, at various heights above the coil
Table G.2 \u2013 Coupling factors and allowed coil currents at 11 kHz for the hand modelat 6\u00a0mm above the coil with different sideways positions <\/td>\n<\/tr>\n\n 65<\/td>\n Figure G.3 \u2013 CGCR coil currents at 11 kHz for the hand model at 6 mm above the coil with different sideways positions <\/td>\n<\/tr>\n \n 66<\/td>\n Annex H (informative) Frequency upscaling with numerical modelling
H.1 General and energy penetration depth
H.2 Actual penetration depth data <\/td>\n<\/tr>\n\n 67<\/td>\n H.3 The penetration depth issue of representativity with frequency upscaling
H.4 Separation of the internal power density caused by direct capacitive coupling, and that caused by the external magnetic field <\/td>\n<\/tr>\n\n 68<\/td>\n H.5 The frequency upscaling procedures
H.5.1 General
H.5.2 Choices of conductivity and control procedures <\/td>\n<\/tr>\n\n 70<\/td>\n Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Industrial electroheating and electromagnetic processing equipment. Evaluation of hazards caused by magnetic nearfields from 1 Hz to 6 MHz<\/b><\/p>\n
\n\n
\n Published By<\/td>\n Publication Date<\/td>\n Number of Pages<\/td>\n<\/tr>\n \n BSI<\/b><\/a><\/td>\n 2017<\/td>\n 72<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":255403,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[435,2641],"product_tag":[],"class_list":{"0":"post-255401","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-25-180-10","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/255401","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/255403"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=255401"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=255401"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=255401"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}