CLC/TR 62271-208:2010

SLOVENSKI STANDARD
01-junij-2010
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Methods to quantify the steady state, low frequency EMF generated by HV switchgear
assemblies and HV/LV prefabricated substations (IEC/TR 62271-208:2009)
Bestimmung der stationären, betriebsfrequenten elektromagnetischen Felder von HS-
Schaltanlagen und fabrikfertigen HS-/NS-Stationen (IEC/TR 62271-208:2009)
Méthodes de quantification des champs électromagnétiques à fréquence industrielle en
régime établi générés par les ensembles d'appareillages HT et les postes préfabriqués
HT/BT (CEI/TR 62271-208:2009)
Ta slovenski standard je istoveten z: CLC/TR 62271-208:2010
ICS:
29.130.10 Visokonapetostne stikalne in High voltage switchgear and
krmilne naprave controlgear
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

TECHNICAL REPORT
CLC/TR 62271-208
RAPPORT TECHNIQUE
April 2010
TECHNISCHER BERICHT
ICS 29.130.10
English version
High-voltage switchgear and controlgear -
Part 208: Methods to quantify the steady state, power-frequency
electromagnetic fields generated by HV switchgear assemblies and HV/LV
prefabricated substations
(IEC/TR 62271-208:2009)
Appareillage à haute tension -  Hochspannungs-Schaltgeräte
Partie 208: Méthodes de quantification und -Schaltanlagen -
des champs électromagnétiques Teil 208: Bestimmung der stationären,
à fréquence industrielle en régime établi betriebsfrequenten elektromagnetischen
générés par les ensembles Felder von HS-Schaltanlagen
d'appareillages HT et les postes und fabrikfertigen HS-/NS-Stationen
préfabriqués HT/BT
(IEC/TR 62271-208:2009)
(CEI/TR 62271-208:2009)
This Technical Report was approved by CENELEC on 2010-03-05.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus,
the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia,
Spain, Sweden, Switzerland and the United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Management Centre: Avenue Marnix 17, B - 1000 Brussels

© 2010 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
-
Ref. No. CLC/TR 62271-208:2010 E

Foreword
This Technical Report consists of the text of the International Technical Report
IEC/TR 62271-208:2009 prepared by SC 17C, High-voltage switchgear and controlgear assemblies,
of IEC TC 17, Switchgear and controlgear.
It was circulated for voting in accordance with the Internal Regulations, Part 2, Subclause 11.4.3.3
(simple majority) for acceptance as a CENELEC Technical Report.
__________
– 3 – CLC/TR 62271-208:2010
Annex ZA
(normative)
Normative references to international publications
with their corresponding European publications
The following referenced documents are indispensable for the application of this document. For dated
references, only the edition cited applies. For undated references, the latest edition of the referenced
document (including any amendments) applies.
NOTE  Where an International Publication has been modified by common modifications, indicated by (mod), the relevant
EN/HD applies.
Publication Year Title EN/HD Year
1) 2)
IEC 61000-6-2 - Electromagnetic compatibility (EMC) – EN 61000-6-2 -
Part 6-2: Generic standards – Immunity for
industrial environments
1)
IEC 61786 - Measurement of low-frequency magnetic and - -
electric fields with regard to exposure of human
beings – Special requirements for instruments
and guidance for measurement
1) 2)
IEC 62271-200 - High-voltage switchgear and controlgear – EN 62271-200 -
Part 200: AC metal-enclosed switchgear and
controlgear for rated voltages above 1 kV and
up to and including 52 kV
1) 2)
IEC 62271-201 - High-voltage switchgear and controlgear – EN 62271-201 -
Part 201: AC insulation-enclosed switchgear
and controlgear for rated voltages above 1 kV
and up to and including 52 kV
1) 2)
IEC 62271-202 - High-voltage switchgear and controlgear – EN 62271-202 -
Part 202: High voltage/low voltage prefabricated
substation
1)
Undated reference.
2)
Valid edition at date of issue.

IEC/TR 62271-208 ®
Edition 1.0 2009-10
TECHNICAL
REPORT
RAPPORT
TECHNIQUE
High-voltage switchgear and controlgear –
Part 208: Methods to quantify the steady state, power-frequency electromagnetic
fields generated by HV switchgear assemblies and HV/LV prefabricated
substations
Appareillage à haute tension –
Partie 208: Méthodes de quantification des champs électromagnétiques à
fréquence industrielle en régime établi générés par les ensembles
d’appareillages HT et les postes préfabriqués HT/BT

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
COMMISSION
ELECTROTECHNIQUE
PRICE CODE
INTERNATIONALE
X
CODE PRIX
ICS 29.130.10 ISBN 2-8318-1067-8
– 2 – TR 62271-208 © IEC:2009
CONTENTS
FOREWORD.4
INTRODUCTION.6
1 Scope.7
2 Normative references .7
3 Terms and definitions .8
4 Evaluation requirements .9
4.1 General .9
4.2 Methods of evaluation .9
4.3 Evaluation of electric fields.10
4.3.1 HV switchgear assemblies.10
4.3.2 HV/LV prefabricated substations.10
4.4 Evaluation of magnetic fields.10
4.4.1 HV switchgear assemblies.10
4.4.2 HV/LV prefabricated substations.11
5 Measurements.12
5.1 General .12
5.2 Measuring instruments .12
5.3 Measurement procedures .12
5.3.1 General .12
5.3.2 Electric field .13
5.3.3 Magnetic field .16
5.3.4 Background fields .16
5.3.5 Environmental factors.16
5.4 Measurement set-up.17
5.4.1 General .17
5.4.2 Additional provisions for HV/LV prefabricated substations .20
6 Calculations .20
6.1 General .20
6.2 Software.21
6.3 Calculation procedures.21
6.4 Results.21
6.5 Validation .22
7 Documentation .22
7.1 Characteristics of the HV switchgear assembly or prefabricated substation .22
7.2 Evaluation method.22
7.3 Presentation of the measurement results.22
7.4 Presentation of the calculation results .23
Annex A (informative) Presentation of E or B field measurement data – Example for a
typical HV/LV pre-fabricated substation .24
Annex B (informative) Examples of analytical solutions to benchmark EMF
calculations.
Bibliography.45

Figure 1 – Example of test circuits configuration to obtain the maximum external
magnetic field of a switchgear assembly and/or a prefabricated substation .11
Figure 2 – Reference surface (RS) for equipment of irregular shape .13

– 3 –
TR 62271-208 © IEC:2009
Figure 3 – Scanning areas to find the hot spots .14
Figure 4 – Determination of the field variation as a function of the distance from the
hot spot locations (perpendicular to the reference surface) .15
Figure 5 – Test set-up of main components, external cables, hot spot locations and
measurement volume.18
Figure 6 – Test circuit for electric and magnetic field measurement .19
Figure A.1 – Hot spot locations representing the field maxima .24
Figure A.2 – Graphical presentation of the field variation .25
Figure A.3 – Example diagram for the field variation at hot spots .26
Figure B.1 – Schematic for 3-phase magnetic field calculation.27
Figure B.2 – Variation of resultant magnetic field around 3-phase cable .30
Figure B.3 – Maximum resultant magnetic field around 3-phase cable .31
Figure B.4 – Schematic for 3-phase electric field calculation.35
Figure B.5 – Variation of resultant electric field around 3-phase cable .38
Figure B.6 – Maximum resultant electric field around 3-phase cable .40

Table A.1 – Listing of the hot spot coordinates.25
Table A.2 – Variation of field values for one hot spot .25
Table A.3 – Background fields .26
Table B.1 – Values of H for spatial angles θ and time angles ωt .30
res
Table B.2 – Values of maximum H for spatial angles θ.32
res
Table B.3 – Values of E for spatial angles θ and time angles ωt.39
res
Table B.4 – Values of maximum E for spatial angles θ .40

– 4 – TR 62271-208 © IEC:2009
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR –

Part 208: Methods to quantify the steady state,
power-frequency electromagnetic fields
generated by HV switchgear assemblies
and HV/LV prefabricated substations

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote
international co-operation on all questions concerning standardization in the electrical and electronic fields. To
this end and in addition to other activities, IEC publishes International Standards, Technical Specifications,
Technical Repor
...