Bsi bs en 61326 3 2 2008

BS EN 61326-3-2:2008 BSI British Standards Electrical equipment for measurement, control and laboratory use – EMC requirements Part 3–2: Immunity requirements for safety-related systems and for equipment intended to perform safety-related functions (functional safety) – Industrial applications with specified electromagnetic environment NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW raising standards worldwide™ BRITISH STANDARD BS EN 61326-3-2:2008 National foreword This British Standard is the UK implementation of EN 61326-3-2:2008 It is identical with IEC 61326-3-2:2008 Together with BS EN 61326-1:2006, BS EN 61326-2-1:2006, BS EN 61326-2-2:2006, BS EN 61326-2-3:2006, BS EN 61326-2-4:2006, BS EN 61326-2-5:2006, BS EN 61326-2-6:2006 and BS EN 61326-3-1:2008, it supersedes BS EN 61326:1998 which is withdrawn The UK participation in its preparation was entrusted by Technical Committee GEL/65, Measurement and control, to Subcommittee GEL/65/1, System considerations A list of organizations represented on this committee can be obtained on request to its secretary This publication does not purport to include all the necessary provisions of a contract Users are responsible for its correct application © BSI 2009 ISBN 978 580 56351 ICS 25.040.40; 33.100.20 Compliance with a British Standard cannot confer immunity from legal obligations This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2009 Amendments issued since publication Amd No Date Text affected BS EN 61326-3-2:2008 EUROPEAN STANDARD EN 61326-3-2 NORME EUROPÉENNE June 2008 EUROPÄISCHE NORM ICS 25.040.40; 33.100.20 Partially supersedes EN 61326:1997 + A1:1998 + A2:2002 + A3:2003 English version Electrical equipment for measurement, control and laboratory use EMC requirements Part 3-2: Immunity requirements for safety-related systems and for equipment intended to perform safety-related functions (functional safety) Industrial applications with specified electromagnetic environment (IEC 61326-3-2:2008) Matériel électrique de mesure, de commande et de laboratoire Exigences relatives la CEM Partie 3-2: Exigences d'immunité pour les systèmes relatifs la sécurité et aux matériels destinés réaliser des fonctions relatives la sécurité (sécurité fonctionnelle) Applications industrielles dont l'environnement électromagnétique est spécifié (CEI 61326-3-2:2008) Elektrische Mess-, Steuer-, Regel- und Laborgeräte EMV-Anforderungen Teil 3-2: Störfestigkeitsanforderungen für sicherheitsbezogene Systeme und für Geräte, die für sicherheitsbezogene Funktionen vorgesehen sind (Funktionale Sicherheit) Industrielle Anwendungen in spezifizierter elektromagnetischer Umgebung (IEC 61326-3-2:2008) This European Standard was approved by CENELEC on 2008-06-01 CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CENELEC member This European Standard exists in three official versions (English, French, German) A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to the Central Secretariat has the same status as the official versions CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, 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 Central Secretariat: rue de Stassart 35, B - 1050 Brussels © 2008 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members Ref No EN 61326-3-2:2008 E BS EN 61326-3-2:2008 EN 61326-3-2:2008 -2- Foreword The text of document 65A/501/FDIS, future edition of IEC 61326-3-2, prepared by SC 65A, System aspects, of IEC TC 65, Industrial-process measurement, control and automation, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 61326-3-2 on 2008-06-01 The EN 61326 series supersedes EN 61326:1997 + corrigendum September 1998 + A1:1998 + A2:2001 + A3:2003 This standard is to be used in conjunction with EN 61326-1 The following dates were fixed: – latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2009-03-01 – latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2011-06-01 Annex ZA has been added by CENELEC Endorsement notice The text of the International Standard IEC 61326-3-2:2008 was approved by CENELEC as a European Standard without any modification BS EN 61326-3-2:2008 -3- EN 61326-3-2:2008 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 When an international publication has been modified by common modifications, indicated by (mod), the relevant EN/HD applies Publication Year 1) Title EN/HD Year International Electrotechnical Vocabulary (IEV) Chapter 161: Electromagnetic compatibility - - IEC 60050-161 - IEC 61000-4-2 A1 A2 1995 1998 2000 Electromagnetic compatibility (EMC) Part 4-2: Testing and measurement techniques - Electrostatic discharge immunity test EN 61000-4-2 A1 A2 1995 1998 2001 IEC 61000-4-3 2006 Electromagnetic compatibility (EMC) Part 4-3: Testing and measurement techniques - Radiated, radio-frequency, electromagnetic field immunity test EN 61000-4-3 2006 IEC 61000-4-4 2004 Electromagnetic compatibility (EMC) Part 4-4: Testing and measurement techniques - Electrical fast transient/burst immunity test EN 61000-4-4 2004 IEC 61000-4-5 2005 Electromagnetic compatibility (EMC) Part 4-5: Testing and measurement techniques - Surge immunity test EN 61000-4-5 2006 IEC 61000-4-6 + A1 + A2 2003 2004 2006 Electromagnetic compatibility (EMC) Part 4-6: Testing and measurement techniques - Immunity to conducted disturbances, induced by radio-frequency fields EN 61000-4-6 + corr August 2007 2007 IEC 61000-4-8 A1 1993 2000 Electromagnetic compatibility (EMC) EN 61000-4-8 Part 4-8: Testing and measurement A1 techniques - Power frequency magnetic field immunity test 1993 2001 IEC 61000-4-11 2004 Electromagnetic compatibility (EMC) EN 61000-4-11 Part 4-11: Testing and measurement techniques - Voltage dips, short interruptions and voltage variations immunity tests 2004 IEC 61000-4-29 2000 Electromagnetic compatibility (EMC) EN 61000-4-29 Part 4-29: Testing and measurement techniques - Voltage dips, short interruptions and voltage variations on d.c input power port immunity tests 2000 IEC 61000-6-2 2005 Electromagnetic compatibility (EMC) Part 6-2: Generic standards - Immunity for industrial environments 2005 2005 1) Undated reference EN 61000-6-2 + corr September BS EN 61326-3-2:2008 EN 61326-3-2:2008 -4- Publication Year Title EN/HD Year IEC 61326-1 2005 Electrical equipment for measurement, control and laboratory use - EMC requirements Part 1: General requirements EN 61326-1 2006 IEC 61326-2-1 2005 Electrical equipment for measurement, EN 61326-2-1 control and laboratory use - EMC requirements Part 2-1: Particular requirements - Test configurations, operational conditions and performance criteria for sensitive test and measurement equipment for EMC unprotected applications 2006 IEC 61326-2-2 2005 Electrical equipment for measurement, EN 61326-2-2 control and laboratory use - EMC requirements Part 2-2: Particular requirements - Test configurations, operational conditions and performance criteria for portable test, measuring and monitoring equipment used in low-voltage distribution systems 2006 IEC 61326-2-3 2006 Electrical equipment for measurement, control and laboratory use - EMC requirements Part 2-3: Particular requirements - Test configuration, operational conditions and performance criteria for transducers with integrated or remote signal conditioning EN 61326-2-3 2006 IEC 61326-2-4 2006 Electrical equipment for measurement, EN 61326-2-4 control and laboratory use - EMC requirements Part 2-4: Particular requirements - Test configurations, operational conditions and performance criteria for insulation monitoring devices according to IEC 61557-8 and for equipment for insulation fault location according to IEC 61557-9 2006 IEC 61326-2-5 2006 Electrical equipment for measurement, control and laboratory use - EMC requirements Part 2-5: Particular requirements - Test configurations, operational conditions and performance criteria for field devices with interfaces according to IEC 61784-1, CP 3/2 EN 61326-2-5 2006 IEC 61326-3-1 2008 Electrical equipment for measurement, EN 61326-3-1 control and laboratory use - EMC requirements Part 3-1: Immunity requirements for safetyrelated systems and for equipment intended to perform safety-related functions (functional safety) - General industrial applications 2008 IEC 61508-2 2000 Functional safety of EN 61508-2 electrical/electronic/programmable electronic safety-related systems Part 2: Requirements for electrical/electronic/programmable electronic safety-related systems 2001 BS EN 61326-3-2:2008 -5- EN 61326-3-2:2008 Publication Year Title EN/HD IEC 61508-4 + corr April 1998 1999 Functional safety of electrical/electronic/programmable electronic EN 61508-4 safety-related systems Part 4: Definitions and abbreviations IEC 61511-1 + corr November 2003 2004 Functional safety - Safety instrumented systems for the process industry sector Part 1: Framework, definitions, system, hardware and software requirements ISO/IEC Guide 51 1999 Safety aspects - Guidelines for their inclusion in standards EN 61511-1 Year 2001 2004 - BS EN 61326-3-2:2008 This page deliberately left blank BS EN 61326-3-2:2008 –2– 61326-3-2 © IEC:2008 CONTENTS FOREWORD INTRODUCTION Scope .9 Normative references 10 Terms and definitions 11 General 13 EMC test plan 14 5.1 5.2 General 14 Configuration of EUT during testing 14 5.2.1 General 14 5.2.2 Composition of EUT 14 5.2.3 Assembly of EUT 14 5.2.4 I/O ports 15 5.2.5 Auxiliary equipment 15 5.2.6 Cabling and earthing (grounding) 15 5.3 Operation conditions of EUT during testing 15 5.3.1 Operation modes 15 5.3.2 Environmental conditions 15 5.3.3 EUT software during test 15 5.4 Specification of performance criteria 15 5.5 Test description 15 Performance criteria 16 6.1 Performance criteria A, B and C 16 6.2 Performance criterion FS 16 6.3 Application of the performance criterion FS 16 Immunity requirements 16 Test set-up and test philosophy for EUT with functions intended for safety applications 19 8.1 8.2 8.3 8.4 8.5 Test Testing of safety-related systems and equipment intended to be used in safety-related systems 19 Test philosophy for equipment intended for use in safety-related systems 20 Test philosophy for safety-related systems 20 Test configuration 20 Monitoring 21 results and test report 21 Annex A (informative) Evaluation of electromagnetic phenomena 25 Annex B (informative) Details of the specified electromagnetic environment 27 Annex C (informative) Example of immunity levels in the process industry 31 Bibliography 32 Figure – Correlation between the standards IEC 61326-1, IEC 61326-2-X, IEC 61326-3-1 and IEC 61326-3-2 BS EN 61326-3-2:2008 61326-3-2 © IEC:2008 –3– Figure – Typical test set-up for equipment intended for use in a safety related system integrated into a representative safety-related system during test 22 Figure – Typical test set-up for equipment intended for use in a safety-related system tested stand-alone 23 Figure – Test set-up for a safety-related system 24 Figure B.1 – Recommended cable layouts for different categories 28 Table 1a – Immunity test requirements for equipment intended for use in industrial locations with specified electromagnetic environment – Enclosure port 17 Table 1b – Immunity test requirements for equipment intended for use in industrial locations with specified electromagnetic environment – Input and output a.c power ports 17 Table 1c – Immunity test requirements for equipment intended for use in industrial locations with specified electromagnetic environment – Input and output d.c power ports 18 Table 1d – Immunity test requirements for equipment intended for use in industrial locations with specified electromagnetic environment – I/O signal/control ports 18 Table 1e – Immunity test requirements for equipment intended for use in industrial locations with specified electromagnetic environment – I/O signal/control ports connected directly to power supply networks 19 Table 1f – Immunity test requirements for equipment intended for use in industrial locations with specified electromagnetic environment – Functional earth port 19 Table A.1 – General considerations for the application of electromagnetic phenomena for functional safety in industrial applications with specified electromagnetic environment (examples) 26 Table C.1 – Immunity test requirements for equipment intended for use in industrial locations with a specified electromagnetic environment according to NE 21 31 BS EN 61326-3-2:2008 61326-3-2 © IEC:2008 – 21 – The auxiliary devices which are necessary for the function of the EUT and for performing the function intended for safety applications shall be mounted in a well-protected electromagnetic environment (see Figure 2) During the test, these devices shall not be exposed to electromagnetic disturbances Relevant I/O ports of the EUT shall be connected with the appropriate ports of the devices of the safety system, which are necessary for the function of the EUT and for performing the function intended for the safety application Lines and I/O ports of the EUT that are not used shall be terminated as specified by the manufacturer Only cables specified by the manufacturer of the EUT or the safety system shall be used in the test set-up 8.5 Monitoring During testing the specified functions of the EUT intended for safety applications shall be monitored The monitoring system shall monitor whether the EUT functions as intended or an observable, defined state of the EUT is achieved within a stated time For this, the monitoring system shall observe, if applicable, • the data communication between the EUT and the devices, which are necessary for the function of the EUT and for performing the function intended for safety application; and • the status of the safety outputs whose functions are intended for safety applications Test results and test report The test results shall be documented in a comprehensive test report with sufficient detail to provide for test repeatability The test report shall contain the following minimum information: – EUT description; – EMC test plan; – test data and results; – test equipment and set-up; – the behaviour observed during the test BS EN 61326-3-2:2008 61326-3-2 © IEC:2008 – 22 – B C H A D G F E IEC 2339/07 Key A Monitoring system Earthing point for cable shield B Monitoring output Shielded cable for monitoring C Part of the safety-related system not under test Unshielded cable for monitoring D Decoupling network at the shield between the protected and unprotected environment Terminating device for interfaces (earthed if required by the manufacturer) E EUT Earth connection to the ground plane if required F Insulation support G Ground plane H Electromagnetic decoupled environment Figure – Typical test set-up for equipment intended for use in a safety-related system integrated into a representative safety-related system during test BS EN 61326-3-2:2008 61326-3-2 © IEC:2008 – 23 – G A C F E D B IEC 2340/07 Key A Monitoring system Earthing point for cable shield B Safety-related output interface Output shielded signal line intended for a safety purpose C Decoupling network at the shield between the protected and unprotected environment Output unshielded signal line intended for a safety purpose D EUT Non-safety-related monitoring signal line E Insulation support Terminating device for interfaces (earthed if required by the manufacturer) F Ground plane Earth connection to the ground plane if required G Electromagnetic decoupled environment Figure – Typical test set-up for equipment intended for use in a safety-related system tested stand-alone BS EN 61326-3-2:2008 61326-3-2 © IEC:2008 – 24 – G A C F E D B IEC 2341/07 Key A Monitoring system Earthing point for cable shield B Monitoring output Shielded cable for monitoring C Decoupling network at the shield between the protected and unprotected environment Unshielded cable for monitoring D EUT Non-safety-related monitoring signal line E Insulation support Terminating device for interfaces (earthed if required by the manufacturer) F Ground plane Earth connection to the ground plane if required G Electromagnetic decoupled environment Figure – Test set-up for a safety-related system BS EN 61326-3-2:2008 61326-3-2 © IEC:2008 – 25 – Annex A (informative) Evaluation of electromagnetic phenomena The relationship between EMC and safety requires due consideration particularly because the consequences of safety failures can be serious EMC requirements for safety-related equipment and systems can only be based on extensive discussions between the parties involved Some IEC standards and technical specifications or reports like IEC 61508 and IEC 61000-1-2 deal with EMC and functional safety aspects but both of them refer to IEC 61000-2-5 NOTE The test levels in this standard are based on statistical evaluations of the NAMUR (User Association for Automation in Process Industry; www.namur.de) Their evaluation includes more than 23 000 units (2003) that are used in safety instrument applications According to this evaluation the devices meet the requirement of SIL and safety instrument applications The corresponding test levels are given in Annex C A proposal of deriving immunity levels taking into account the knowledge of experts for electromagnetic compatibility as well as the various electromagnetic phenomena field is given in Table A.1 together with a comparison to those immunity levels used in IEC 61326-1 for industrial applications BS EN 61326-3-2:2008 – 26 – 61326-3-2 © IEC:2008 Table A.1 – General considerations for the application of electromagnetic phenomena for functional safety in industrial applications with specified electromagnetic environment (examples) No Phenomena Electrostatic discharge (ESD) Basic standard IEC 61000-4-2 Increased level a Yes next level of IEC 61000-4-2 No Comments Levels shall be applied in accordance with the environmental conditions described in IEC 61000-4-2 on parts which may be touched by persons other than staff working in accordance with defined procedures for the control of ESD Access to equipment is limited to appropriately trained personnel only Increased levels shall be applied in frequency ranges used for mobile transmitters in general, except when reliable measures are realized to avoid the use of such equipment nearby ISM frequencies have to be taken into account on an individual basis Electromagnetic field IEC 61000-4-3 Yes, depending on frequency range Burst IEC 61000-4-4 No Because of use of dedicated cables for power, I/O and communication and the separation of this cable this phenomena is limited to normal levels Surge IEC 61000-4-5 No Because of overvoltage and lightning protection by appropriate measures (for example, metal construction of the building or the use of protection devices) this phenomenon is limited to normal levels Conducted r.f IEC 61000-4-6 Yes, with expanded frequency range Taking into account the growing use of frequency-driven motors and switching-mode power supplies, which cause low-frequency disturbances, a higher test level and an expanded frequency range is needed Power frequency magnetic field IEC 61000-4-8 Yes According to the use of high currents produced by (pipe) heating systems driven by a.c mains a higher test level is needed Voltage dips IEC 61000-4-11 No Short interruptions IEC 61000-4-11 No Voltage dips IEC 61000-4-29 Yes According to the use of d.c power distribution networks in the process industry, tests are needed 10 Short interruptions IEC 61000-4-29 Yes According to the use of d.c power distribution networks in the process industry, tests are needed a “Increased level” compared to the test levels of IEC 61326-1 for industrial applications BS EN 61326-3-2:2008 61326-3-2 © IEC:2008 – 27 – Annex B (informative) Details of the specified electromagnetic environment B.1 General The aim of this annex is to give more detailed information on characteristics of the industrial environment which is mentioned in the scope of this standard NOTE The details are taken from NAMUR Recommendation 98 (installation requirements for achieving EMC in production sites) NAMUR (User Association for Automation in Process Industries; www.namur.de) is an association of users of process control technology Manufacturers of process control technology, hardware and software are not eligible as members B.2 Industrial area with limited access The access to the industrial plant (area) is limited by an access regulation All employees and visitors are well informed on access limitations, use of mobile transmitters and other important rules to protect the environment against electromagnetic phenomena B.3 Limited use of mobile transmitters The use of mobile transmitters in sensitive areas is limited by access rules The access rules are chosen by calculation of the minimum protective distances for sensitive equipment For low power devices at frequencies above GHz (typically below 100 mW ERP ), the access is not limited The protective distances are typically: • for GSM telephones • for DECT telephones • for mobile radio devices approx 1,8 m (P ERP = W) approx 1,2 m (max P ERP = W) approx 0,4 m (P ERP = ¼ W) To calculate these distances the following expression is used: d = 2⋅ k P E where d is the protective distance from the transmission antenna in m; P is the transmission output in W; k is constant k = 3,9 if P ERP is utilized; k = 1,7 if the antenna supply output is utilized; E is the test field strength for calculation is 10 V/m B.4 Dedicated cables for power supply and control, signal or communication lines With regard to their potential in emitting or receiving disturbances, cable connections are divided into three different categories BS EN 61326-3-2:2008 61326-3-2 â IEC:2008 28 ã Signal / control cables (< 110 V) For example, signal cables for PLC/PCS, measurement signal cables mA to 20 mA, communication cables, cables for field bus/system bus and intrinsically safe circuits It is recommended that pairs of twisted wires are used for low-level signals • Low-voltage (LV) power cables (up to kV) DC power cables (even 1 kV) Power cables and other cables carrying medium or high voltage These cable categories are physically separated, see Clause B.5 B.5 Separation between power supply and control, signal or communication cables Different categories of cable are laid separately The separation distance is a minimum of 30 cm, or a metallic separating web is used in the cable duct/tray Particularly high-voltage power cables are not laid together with other cable categories Wire pairs that belong together functionally are laid in the same cable to reduce coupling of symmetric signals Cables for auxiliary power supplies should, wherever possible, be laid separately from control cables Control cables are separated from busbars and power transformers Figure B.1 shows the recommended cable layouts for different categories A B 30 cm 1 C 30 cm IEC 2343/07 Key Signal cable Low-voltage power cable Earth connection Steel structure, equipotential bonding A Different categories of cables separated by B Different categories of cables separated by metallic separation web distance between them C Different categories of cables separated by using different metallic cable trays or by distance if not metallic Figure B.1 – Recommended cable layouts for different categories BS EN 61326-3-2:2008 61326-3-2 © IEC:2008 B.6 – 29 – Factory building mostly consisting of metal construction The buildings of the factory consist of reinforced concrete or metal construction Metal construction and reinforcement of concrete are welded or bonded together to improve the equipotential bonding effect B.7 Overvoltage/lightning protection by appropriate measures (for example, metal construction of the building or the use of protection devices) For the factory/plant an overvoltage/lightning protection concepts exist The installed overvoltage/lightning protection system limits overvoltages caused by lightning or switching actions between all conductors and the ground potential and limits the overvoltages to a defined and safe voltage level The EMC-orientated lighting protection concept divides the building system into lightning protection zones in direct relation to the interference sensitivity of individual system areas • Zone 1/Class B, lightning conductor (formerly rough protection) • Zone 2/Class C, overvoltage protector (formerly medium protection) • Zone 3/Class D, overvoltage protector (formerly fine protection) The external lightning protection consists of an interception device, conductors and earthing system The internal lightning protection consists of equipotential bonding, surge arrestors, cable shielding, potential equalization and/or signal balancing A low-impedance connection between the lightning protection system and the building/electrical system earth electrode and adjacent building earths, metallic structures, pipe bridges, pipelines and rail systems is installed The connection is typically by copper shield braiding ≥16 mm , grounding cables 70 - 300 mm or steel strips ≥3,5 mm × 30 mm B.8 Pipe heating systems driven by a.c mains may be present Pipe heating systems are present in many parts of the factory These heating systems which are driven by a.c mains generate high magnetic fields B.9 No high-voltage substations close to sensitive areas High-voltage substations are located outside sensitive areas to prevent extreme high magnetic fields or electric fields B.10 Presence of low-power devices using ISM frequencies according to CISPR 11 CISPR 11 Group ISM equipment using ISM frequencies are present, either only with low radio frequency power or – tantamount – placed at sufficient distance, for example calculated according to B.3 B.11 Competent staff All work on the installation of the plant is done by competent staff The staff is informed about the installation guidelines for equipment and systems to prevent faulty workmanship BS EN 61326-3-2:2008 – 30 – 61326-3-2 © IEC:2008 B.12 Periodic maintenance of equipment and systems All installations (for example, cables, instruments, construction of earth bonding system) are under periodic maintenance to prevent corrosion of cable shields/earth bonding system or faulty workmanship The maintenance is done according to a maintenance plan B.13 Installation guidelines for equipment and systems All installations (before placing into operation and during maintenance/replacement operations) are implemented according to installation guidelines for the plant The guidelines explain in detail the installation process, shielding, earth bonding, etc BS EN 61326-3-2:2008 61326-3-2 © IEC:2008 – 31 – Annex C (informative) Example of immunity levels in the process industry Table C.1 lists exemplary immunity requirements as used in the process industry according to NAMUR Recommendation NE 21 Table C.1 – Immunity test requirements for equipment intended for use in industrial locations with a specified electromagnetic environment according to NE 21 Normal function Port Phenomenon Basic standard Enclosure Electrostatic discharge (ESD) IEC 61000-4-2 kV/8 kV contact/air A Electromagnetic field IEC 61000-4-3 10 V/m (80 MHz-1 GHz) a 10 V/m (1,4 GHz-2 GHz) A A Rated power frequency magnetic field IEC 61000-4-8 100 A/m b A Burst IEC 61000-4-4 kV A IEC 61000-4-5 kV Conducted r.f IEC 61000-4-6 10 V (10 kHz-80 MHz) Ae Voltage dips IEC 61000-4-11 % during cycle 40 % during 50 cycles 100 % during 50 cycles A C C Burst IEC 61000-4-4 kV A IEC 61000-4-5 0,5 kV c /1 kV d A Conducted r.f IEC 61000-4-6 10 V (10 kHz – 80 MHz) Ae Voltage dips IEC 61000-4-29 40 % U T for 000 ms % U T for 000 ms C C Short interruptions IEC 61000-4-29 0% U T for 20 ms A Burst IEC 61000-4-4 kV A Test value – Performance criterion AC power Surge DC power Surge I/O signal/ control c /2 kV d d Surge IEC 61000-4-5 kV Conducted r.f IEC 61000-4-6 10 V (10 kHz-80 MHz) A B Ae a Except for the ITU broadcast frequency bands 87 MHz to 108 MHz, 174 MHz to 230 MHz, and 470 MHz to 790 MHz, where the level shall be V/m b Only to magnetically sensitive equipment c Line to line d Line to ground e For signals characterized by an accuracy of V BS EN 61326-3-2:2008 – 32 – 61326-3-2 © IEC:2008 Bibliography IEC 61000-1-2:2001, Electromagnetic compatibility (EMC) – Part 1-2: General – Methodology for the achievement of the functional safety of electrical and electronic equipment with regard to electromagnetic phenomena IEC 61000-2-5, Electromagnetic compatibility (EMC) – Part 2: Environment – Section 5: Classification of electromagnetic environments NAMUR Recommendation NE 21, Electromagnetic Compatibility (EMC) of Industrial Process and Laboratory Control Equipment NAMUR Recommendation NE 93, Verification of the Safety-related Reliability of PCT Safety Instruments NAMUR Recommendation NE 98, Installation Requirements for achieving EMC in Production Sites Litz, L., Düpont, D., Netter, P SIL-Validation of Safety Instrumented Loops in Use by Statistical Methods Proceedings of the 2nd European Conference on Electrical and Instrumentation Applications in the Petroleum and Chemical Industry (PCIC Europe 2005), p 69-76, Basle (Switzerland), October 2005 Düpont, D., Litz, L., Netter, P Evaluierung bestehender Sicherheitskreise anhand statistischer Methoden Poster, Dechema Jahrestagungen 2005, Chemie Ingenieur Technik, 77 Jahrgang, No 8, Wiley-VCH Verlag GmbH & Co KGaA, Weinheim, p 1143, 2005 Litz, L., Düpont, D., Netter, P SIL validation of safety instrumented loops in use by statistical methods atp International – Automation Technology in Practice, 1/2006, p 29-32, R Oldenbourg Verlag, April 2006 Düpont, D., Litz, L., Netter, P Evaluation of the analytical bottom-up SIL proof by statistical top-down methods Proceedings of the 8th International Conference on Probabilistic Safety Assessment and Management (PSAM8), New Orleans (USA), May 2006 Jaekel, B “Considerations on immunity test levels and methods with regard to functional safety”, in LEWANDOWSKI, G and JANISZEWSKI, JM (ed.) Electromagnetic Compatibility 2006 Wroclaw: Oficyna Wydawnicza Politechniki Wroclawskiej, 2006, p 187-192, ISBN 837085-947-X BS EN 61326-3-2:2008 This page deliberately left blank British Standards Institution (BSI) BSI is the independent national body responsible for preparing British Standards It presents the UK view on standards in Europe and at the international level It is incorporated by Royal Charter Revisions Information on standards British Standards are updated by amendment or revision Users of British Standards should make sure that they possess the latest amendments or editions It is the constant aim of BSI to improve the quality of our products and services We would be grateful if anyone finding an inaccuracy or ambiguity while using this British Standard would inform the Secretary of the technical committee responsible, the identity of which can be found on the inside front cover Tel: +44 (0)20 8996 9000 Fax: +44 (0)20 8996 7400 BSI offers members an individual updating service called PLUS which ensures that subscribers automatically receive the latest editions of standards BSI provides a wide range of information on national, European and international standards through its Library Various BSI electronic information services are also available which give details on all its products and services Contact the Information Centre Tel: +44 (0)20 8996 7111 Fax: +44 (0)20 8996 7048 Email: info@bsigroup.com Subscribing members of BSI are kept up to date with standards developments and receive substantial discounts on the purchase price of standards For details of these and other benefits contact Membership Administration Tel: +44 (0)20 8996 7002 Fax: +44 (0)20 8996 7001 Email: membership@bsigroup.com Information regarding online access to British Standards via British Standards Online can be found at www.bsigroup.com/BSOL Further information about BSI is available on the BSI website at www.bsigroup.com Buying standards Orders for all BSI, international and foreign standards publications should be addressed to BSI Customer Services Tel: +44 (0)20 8996 9001 Fax: +44 (0)20 8996 7001 Email: orders@bsigroup.com You may also buy directly using a debit/credit card from the BSI Shop on the website www.bsigroup.com/shop In response to orders for international standards, it is BSI policy to supply the BSI implementation of those that have been published as British Standards, unless otherwise requested Copyright Copyright subsists in all BSI publications BSI also holds the copyright, in the UK, of the publications of the international standardization bodies Except as permitted under the Copyright, Designs and Patents Act 1988 no extract may be reproduced, stored in a retrieval system or transmitted in any form or by any means – electronic, photocopying, recording or otherwise – without prior written permission from BSI This does not preclude the free use, in the course of implementing the standard of necessary details such as symbols, and size, type or grade designations If these details are to be used for any other purpose than implementation then the prior written permission of BSI must be obtained Details and advice can be obtained from the Copyright & Licensing Manager Tel: +44 (0)20 8996 7070 Email: copyright@bsigroup.com BSI Group Headquarters 389 Chiswick High Road London W4 4AL UK Tel +44 (0)20 8996 9001 Fax +44 (0)20 8996 7001 www.bsigroup.com/standards raising standards worldwide™