SIST EN 62606:2014

General requirements for Arc Fault Detection Devices (AFDD) (IEC 62606:2013, modified)

IEC 62606:2013 applies to arc fault detection devices (AFDD) for household and similar uses in a.c. circuits. An AFDD is designed by the manufacturer:  - either as a single device having opening means able to open the protected circuit in specified conditions; or  - as a single device integrating a protective device; or  - as a separate unit, according to Annex D assembled on site with a declared protective device.

Allgemeine Anforderungen an Fehlerlichtbogen-Schutzeinrichtungen (IEC 62606:2013, modifiziert)

Exigences generales des dispositifs pour la detection d’arcs (CEI 62606:2013, modifiée)

La CEI 62606:2013 s'applique aux dispositifs pour la détection de défaut d'arc (DPDA) utilisés à des fins domestiques et analogues dans des circuits en courant alternatif (AC). Un DPDA est conçu par le constructeur:  - comme un dispositif unique doté d'un système d'ouverture pouvant ouvrir le circuit protégé dans les conditions spécifiées; ou  - comme un dispositif unique doté d'un dispositif de protection; ou  - comme une unité séparée, conformément à l'Annexe D, assemblée sur site avec un dispositif de protection déclaré.

Splošne zahteve za obločne detektorje (IEC 62606:2013, spremenjen)

Ta mednarodni standard velja za obločne detektorje (AFDD) za gospodinjstva in podobno uporabo v izmeničnih tokokrogih. Proizvajalec zasnuje obločni detektor: – kot samostojno napravo z možnostjo odpiranja zaščitnega tokokroga pri določenih pogojih; ali – kot samostojno napravo z vgrajeno zaščitno napravo; ali – kot posebno enoto, v skladu z dodatkom D, ki se jo sestavi na mestu uporabe z navedeno zaščitno napravo. Vgrajena zaščitna naprava je odklopnik v skladu s standardom IEC 60898-1 ali zaščitna naprava na diferenčni tok (RCD) v skladu s standardom IEC 61008-1, IEC 61009-1 ali IEC 62423. Te naprave so namenjene zmanjšanju tveganja za nastanek požara v končnem krogotoku stalne napeljave zaradi učinka obločnih tokov, ki pod določenimi pogoji pri nenehnem iskrenju predstavljajo tveganje za nastanek požara. Zaščita pred vžigom zaradi prenapetosti, ki nastane zaradi okvarjenega nevtralnega vodnika pri trifazni inštalaciji, ki je vključena v tej vrsti opreme kot dodatna možnost, je obravnavana v 9.22. Ta mednarodni standard velja za naprave, ki hkrati zaznavajo in razlikujejo obločni tok v povezavi z nevarnostjo požara, in določa merila delovanja za odprtje tokokroga pod posebnimi pogoji, kadar obločni tok preseže mejne vrednosti, podane v tem standardu. Obločni detektorji, ki so skladni s tem standardom, razen odklopnikov z neprekinjeno nevtralno točko, so primerni za uporabo v sistemih IT. Najvišja nazivna napetost je 240 V izmenične napetosti. Obločni detektorji so v skladu s tem standardom dobavljeni med linijskim in nevtralnim vodnikom ali med dvema linijskima vodnikoma. Najvišji nazivni tok (ln) je 63 A izmenične napetosti. Obločni detektorji, ki jih napajajo baterije ali tokokrog, ki ni zaščiten, niso zajeti v tem standardu. Obločni detektorji so izolirani. Lahko jih uporabljajo tudi nepoučene osebe in ne potrebujejo vzdrževanja. Posebne zahteve bodo morda potrebne za: – obločne detektorje, vgrajene v ali namenjene le uporabi z vtiči in vtičnicami ali s spojkami naprave za gospodinjsko ali podobno splošno rabo; obločne detektorje, namenjene uporabi pri frekvencah, ki niso 50 Hz ali 60 Hz.

General Information

• Status: Published
• Publication Date: 07-May-2014
• ICS: 29.120.50 - Fuses and other overcurrent protection devices
• Technical Committee: EPR - Electrical accessories
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 22-Nov-2013
• Due Date: 27-Jan-2014
• Completion Date: 08-May-2014
• Directive: Not Harmonized2004/108/EC - Directive 2004/108/EC of the European Parliament and of the Council of 15 December 2004 on the approximation of the laws of the Member States relating to electromagnetic compatibility and repealing Directive 89/336/EEC
  OJ Ref: C 53/04 OJ Date: 25-Feb-2014
• Directive:

  ---

  Not Harmonized2004/108/EU - DIRECTIVE 2004/108/EC OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL of 15 December 2004 on the approximation of the laws of the Member States relating to electromagnetic compatibility and repealing Directive 89/336/EEC
• Directive:

  ---

  Not Harmonized2006/95/EC - Directive 2006/95/EC of the European Parliament and of the Council of 12 December 2006 on the harmonisation of the laws of Member States relating to electrical equipment designed for use within certain voltage limits (codified version)
  OJ Ref: C 149 OJ Date: 16-May-2014
• Directive:

  ---

  Harmonized Standard2014/30/EU - Directive 2014/30/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to electromagnetic compatibility (recast)
  OJ Ref: C 173 OJ Date: 13-May-2016
• Directive:

  ---

  Harmonized Standard2014/35/EU - Directive 2014/35/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of electrical equipment designed for use within certain voltage limits
  OJ Ref: C 249/03, L 13.12.2023 OJ Date: 08-Jul-2016
• Ref Project: EN 62606:2013 - General requirements for arc fault detection devices

Relations

• Refers: SIST HD 60364-6:2016/A12:2017 - Low-voltage electrical installations - Part 6: Verification
• Effective Date: 03-Feb-2026
• Refers: SIST EN 60068-2-30:2006 - Environmental testing -- Part 2-30: Tests - Test Db: Damp heat, cyclic (12 h + 12 h cycle)
• Effective Date: 03-Feb-2026
• Refers: SIST HD 60364-6:2007 - Low voltage electrical installations -- Part 6: Verification
• Effective Date: 03-Feb-2026
• Refers: SIST EN 61543:1998/A2:2006 - Residual current-operated protective devices (RCDs) for household and similar use - Electromagnetic compatibility
• Effective Date: 03-Feb-2026
• Refers: SIST EN 60695-2-10:2002 - Fire hazard testing -- Part 2-10: Glowing/hot-wire based test methods - Glow-wire apparatus and common test procedure
• Effective Date: 03-Feb-2026
• Refers: SIST EN 61543:1998 - Residual current-operated protective devices (RCDs) for household and similar use - Electromagnetic compatibility
• Effective Date: 03-Feb-2026
• Refers: SIST HD 60364-6:2016/A11:2017 - Low-voltage electrical installations - Part 6: Verification
• Effective Date: 03-Feb-2026
• Refers: SIST EN 62423:2013 - Type F and type B residual current operated circuit-breakers with and without integral overcurrent protection for household and similar uses (IEC 62423:2009, modified + corrigendum Dec. 2011)
• Effective Date: 03-Feb-2026
• Refers: SIST EN 60664-1:2007 - Insulation coordination for equipment within low-voltage systems -- Part 1: Principles, requirements and tests
• Effective Date: 03-Feb-2026
• Refers: SIST EN 61009-1:2013 - Residual current operated circuit-breakers with integral overcurrent protection for household and similar uses (RCBOs) - Part 1: General rules (IEC 61009-1:2010, modified)
• Effective Date: 03-Feb-2026
• Refers: SIST EN 55014-1:2007 - Electromagnetic compatibility - Requirements for household appliances, electric tools and similar apparatus -- Part 1: Emission
• Effective Date: 03-Feb-2026
• Refers: SIST EN 60898-1:2004 - Electrical accessories - Circuit breakers for overcurrent protection for household and similar installations -- Part 1: Circuit-breakers for a.c. operation
• Effective Date: 03-Feb-2026
• Refers: SIST HD 60364-1:2008 - Low-voltage electrical installations -- Part 1: Fundamental principles, assessment of general characteristics, definitions
• Effective Date: 03-Feb-2026
• Refers: SIST EN 61008-1:2013 - Residual current operated circuit-breakers without integral overcurrent protection for household and similar uses (RCCBs) - Part 1: General rules (IEC 61008-1:2010, modified)
• Effective Date: 03-Feb-2026
• Refers: SIST HD 60364-1:2008/A11:2017 - Low-voltage electrical installations - Part 1: Fundamental principles, assessment of general characteristics, definitions
• Effective Date: 03-Feb-2026

Overview

SIST EN 62606:2014, titled "General requirements for Arc Fault Detection Devices (AFDD)", specifies the requirements for arc fault detection devices intended for household and similar fixed electrical installations in a.c. circuits. Adopted by the Slovenian Institute for Standardization (SIST) and harmonized with the European Standard EN 62606, this document is based on IEC 62606:2013 with modifications that tailor it for the European context.

Arc Fault Detection Devices (AFDDs) play a crucial role in enhancing electrical safety by detecting dangerous arc faults that may otherwise go unnoticed by conventional protective devices. By automatically disconnecting the affected circuit in the event of hazardous arcing, AFDDs offer protection against electrical fires originating from arc faults, thus fulfilling important safety objectives under the EU Low Voltage Directive.

Key Topics

• Types and Design of AFDDs

  • Standalone devices capable of circuit disconnection in hazardous arc conditions.
  • Integrated AFDDs combining arc detection with protective functions (such as with MCCBs or RCDs).
  • AFDD units designed to be assembled onsite with a declared protective device, as detailed in Annex D.

• Classification and Construction

  • Classification by construction method, type of protective integration, and mounting.
  • Requirements for clearances, creepage distances, and terminal types to ensure mechanical and electrical robustness.

• Performance and Testing

  • Criteria for rated voltage, current, and frequency.
  • Endurance, reliability, and electromagnetic compatibility (EMC).
  • Mandatory type and routine tests to verify arc detection functions and immunity against unwanted tripping.
  • Coordination with short-circuit protective devices.

• Marking and Instructions

  • Mandatory markings for identification and correct installation.
  • Essential operating instructions for installers and users to ensure proper application.

• Safety and Compliance

  • Fulfillment of essential safety requirements under relevant EU Directives.
  • Environmental considerations, including resistance to mechanical stress, thermal conditions, and fire hazards.

Applications

AFDDs are designed for:

• Household Electrical Installations:

  • Reducing the risk of electrical fires due to arc faults in domestic environments.
  • Increasing overall safety in both new and existing residential buildings.

• Similar Fixed Installations:

  • Small commercial or public buildings where similar conditions to residential premises apply.
  • Retrofitting older wiring systems with enhanced arc fault protection.

• Integration with Other Protective Devices:

  • Modular installations where AFDDs are combined with circuit-breakers (MCBs), residual current devices (RCDs), or other overcurrent devices, enabling tailored protection solutions.

The use of AFDDs supports compliance with national wiring regulations and enhances the safety of low-voltage installations.

Related Standards

For comprehensive arc fault and electrical protection in installations, consider these related standards:

• IEC/EN 60364 Series: Electrical installations of buildings (general requirements and safety).
• EN 60898-1: Electrical accessories - Circuit-breakers for overcurrent protection for household and similar installations.
• EN 61008-1 / EN 61009-1: Residual current devices (RCCBs & RCBOs).
• EN 60664-1: Insulation coordination for low-voltage equipment.
• EN 60529: Degrees of protection provided by enclosures (IP code).
• EN 60695-2-11: Fire hazard testing - Glow-wire tests.

These standards collectively ensure protective devices-including AFDDs-are compatible, reliable, and meet safety demands for modern electrical systems.

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Keywords: Arc Fault Detection Devices, AFDD, SIST EN 62606, electrical safety, IEC 62606, household electrical protection, arc fault, circuit breaker, EU Low Voltage Directive, EN standards, fire prevention, EMC, testing requirements.

Standards Content (Sample)

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Allgemeine Anforderungen an Fehlerlichtbogen-Schutzeinrichtungen (IEC 62606:2013, modifiziert)Exigences generales des dispositifs pour la detection d’arcs (CEI 62606:2013, modifiée)General requirements for Arc Fault Detection Devices (AFDD) (IEC 62606:2013, modified)29.120.50Fuses and other overcurrent protection devicesICS:Ta slovenski standard je istoveten z:EN 62606:2013SIST EN 62606:2014en01-junij-2014SIST EN 62606:2014SLOVENSKI
STANDARD
EUROPEAN STANDARD EN 62606 NORME EUROPÉENNE
EUROPÄISCHE NORM November 2013
CENELEC European Committee for Electrotechnical Standardization Comité Européen de Normalisation Electrotechnique Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Avenue Marnix 17, B - 1000 Brussels
© 2013 CENELEC -
All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 62606:2013 E
ICS 29.120; 29.120.50
English version
General requirements for arc fault detection devices (IEC 62606:2013, modified)
Exigences générales des dispositifs pour la détection de défaut d’arcs (CEI 62606:2013, modifiée)
Allgemeine Anforderungen an Fehlerlichtbogen-Schutzeinrichtungen (IEC 62606:2013, modifiziert)
This European Standard was approved by CENELEC on 2013-08-13. 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 CEN-CENELEC Management Centre 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 CEN-CENELEC Management Centre has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
A draft amendment, which covers common modifications to IEC 62606 (23E/785/FDIS), was prepared by CLC/TC 23E,"Circuit breakers and similar devices for household and similar applications" and approved by CENELEC.
The following dates are fixed:
• latest date by which the document has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2014-08-13 • latest date by which the national standards conflicting with the document have to be withdrawn
(dow) 2016-08-13
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CENELEC [and/or CEN] shall not be held responsible for identifying any or all such patent rights.
In this standard, the following print types are used: - compliance statements: in italic type.
This document has been prepared under a mandate given to CENELEC by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s).
For the relationship with EU Directive(s) see informative Annex ZZ, which is an integral part of this document.
This standard covers the Principle Elements of the Safety Objectives for Electrical Equipment Designed for Use within Certain Voltage Limits (LVD - 2006/95/EC).
Endorsement notice The text of the International Standard IEC 62606:2013 was approved by CENELEC as a European Standard with common modifications.
In the official version, for Bibliography, the following notes have to be added for the standards indicated: IEC 60060-2 NOTE
Harmonized as EN 60060-2. IEC 60112:2003 IEC 60269-1:2006 IEC 60664-3 IEC 60664-5 IEC 60695-2-11:2000 IEC 61000-4-2 IEC 61000-4-3 IEC 61000-4-4 IEC 61000-4-5:2005 NOTE
Harmonized as EN 60112:2003 (not modified). NOTE
Harmonized as EN 60269-1:2007 (not modified). NOTE
Harmonized as EN 60664-3. NOTE
Harmonized as EN 60664-5. NOTE
Harmonized as EN 60695-2-11:2001 (not modified). NOTE
Harmonized as EN 61000-4-2. NOTE
Harmonized as EN 61000-4-3. NOTE
Harmonized as EN 61000-4-4. NOTE
Harmonized as EN 61000-4-5:2006 (not modified). SIST EN 62606:2014

- 3 - EN 62606:2013
IEC 61000-4-6 IEC 61000-4-16:1998 +A1:2001 +A2:2009 IEC 61210 NOTE
Harmonized as EN 61000-4-6. NOTE
Harmonized as EN 61000-4-16:1998 (not modified). +A1:2004 +A2:2011 NOTE
Harmonized as EN 61210. COMMON MODIFICATIONS 1 Modification to Clause 1 Delete note 1 and renumber notes 2, 3 and 4 accordingly 2 Modification to 4.3 Delete the first indent 3 Modification to 5.3.1 Delete the dashed text starting with “120 V …”. 4 Modification to 5.3.3 Replace the first paragraph by the following: "Preferred values of rated frequency is 50 Hz." 5 Modification to 5.3.6.2 Delete the note. 6 Modification to 5.3.7.1 Delete Table 2. 7 Modification to 5.3.7.2 In the title of Table 3, delete “and Un 120 V AFDDs” 8 Modification to 5.4 In Table 4, last column, delete “120/240” 9 Modification to 8.2.3 In Table 7, delete “120/240” and “120” everywhere. 10 Modification to 9.7.7.2 In Table 15, delete the line for Uimp 2,5 kV. 11 Modification to 9.7.7.4.1 In Table 16, delete “120/240” SIST EN 62606:2014

- 5 - EN 62606:2013
26 Modification to Figure 13 Delete “and 470nF for 120 V” 27 Modification to E.2 Delete “and 5 A for a 120 V rated voltage AFDD”
(normative)
Normative references to international publications with their corresponding European publications
The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. 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 Title EN/HD Year
IEC 60068-2-30 2005 Environmental testing -
Part 2-30: Tests - Test Db: Damp heat, cyclic (12 h + 12 h cycle) EN 60068-2-30 2005
IEC 60068-3-4 2001 Environmental testing -
Part 3-4: Supporting documentation and guidance - Damp heat tests EN 60068-3-4 2002
IEC 60364
Series Low-voltage electrical installations HD 60364 Series
IEC 60364-4-44 (mod) 2007 Low-voltage electrical installations -
Part 4-44: Protection for safety - Protection against voltage disturbances and electromagnetic disturbances HD 60364-4-442 2012
IEC 60417 Data base Graphical symbols for use on equipment - -
IEC 60479 Series Effects of current on human beings and livestock - -
IEC 60529 - Degrees of protection provided by enclosures (IP Code) - -
IEC 60664-1 2007 Insulation coordination for equipment within low-voltage systems -
Part 1: Principles, requirements and tests EN 60664-1 2007
IEC 60695-2-10 2000 Fire hazard testing -
Part 2-10: Glowing/hot-wire based test methods - Glow-wire apparatus and common test procedure EN 60695-2-101)
IEC/TR 60755 - General requirements for residual current operated protective devices
- -
IEC 60898-1 (mod) - - - 2002 - - - Electrical accessories - Circuit breakers for overcurrent protection for household and similar installations -
Part 1: Circuit-breakers for a.c. operation EN 60898-1 + corr. February
+ A11 + A12 + A13 2003 2004 2005 2008 2012
IEC 61008-1 (mod) 2010 Residual current operated circuit-breakers without integral overcurrent protection for household and similar uses (RCCB's) -
Part 1: General rules EN 61008-1 2012
IEC 61009-1 (mod) 2010 Residual current operated circuit-breakers with integral overcurrent protection for household and similar uses (RCBOs) -
Part 1: General rules EN 61009-1 2012
1) EN 60695-2-10 is superseded by EN 60695-2-10:2013, which is based on IEC 60695-2-10:2013. SIST EN 62606:2014

- 7 - EN 62606:2013
Publication Year Title EN/HD Year IEC 61543 + A1 (mod) + A2 - 1995 2004 2005 - Residual current-operated protective devices (RCDs) for household and similar use - Electromagnetic compatibility EN 61543 + corr. December
+ A11 + corr. May
+ A2 + A12 1995 1997 2003 2004 2006 2005
IEC 62423
- Type F and type B residual current operated circuit-breakers with and without integral overcurrent protection for household and similar uses EN 62423 -
CISPR 14-1 + A1
2005 2008 Electromagnetic compatibility - Requirements for household appliances, electric tools and similar apparatus -
Part 1: Emission EN 55014-1 + A1 2006 2009
Coverage of Essential Requirements of EU Directives This European Standard has been prepared under a mandate given to CENELEC by the European Commission and the European Free Trade Association and within its scope the standard covers all relevant essential requirements as given in Article 1 of Annex I of the EU Directive 2004/108/EC. Compliance with this standard provides one means of conformity with the specified essential requirements of the Directive(s) concerned. WARNING: Other requirements and other EU Directives may be applicable to the products falling within the scope of this standard.
IEC 62606Edition 1.0 2013-07INTERNATIONAL STANDARD NORME INTERNATIONALEGeneral requirements for arc fault detection devices
Exigences générales des dispositifs pour la détection de défaut d’arcs
INTERNATIONAL ELECTROTECHNICAL COMMISSION COMMISSION ELECTROTECHNIQUE INTERNATIONALE XHICS 29.120; 29.120.50 PRICE CODECODE PRIXISBN 978-2-8322-0900-4
– 2 – 62606 © IEC:2013 CONTENTS FOREWORD . 9 INTRODUCTION . 11 1 Scope . 12 2 Normative references . 13 3 Terms and definitions . 14 4 Classification . 17 4.1 According to the method of construction . 17 4.2 According to the method of mounting and connection . 17 4.3 According to the number of poles and current paths . 17 4.4 AFDD providing monitoring information . 17 5 Characteristics of AFDDs . 17 5.1 Summary of characteristics and conditions to mitigate the risk of fire . 17 5.2 Rated quantities and other characteristics . 18 5.2.1 Rated voltage . 18 5.2.2 Rated current (In) . 18 5.2.3 Rated frequency . 18 5.2.4 Rated making and breaking capacity (Im) . 18 5.2.5 Rated making and breaking capacity on one pole (Im1) . 19 5.3 Standard and preferred values . 19 5.3.1 Preferred values of rated voltage (Un) . 19 5.3.2 Preferred values of rated current (In) . 19 5.3.3 Preferred values of rated frequency . 19 5.3.4 Minimum value of the rated making and breaking capacity (Im) . 19 5.3.5 Minimum value of the rated making and breaking capacity on one pole (Im1) . 19 5.3.6 Standard and preferred values of the rated conditional short-circuit current (Inc) and standard and preferred values of the rated conditional short circuit current for one pole (Inc1) . 19 5.3.7 Limiting values of operating criteria for AFDDs for low and high arc currents . 20 5.4 Standard value of rated impulse withstand voltage (Uimp) . 21 5.5 Coordination with short-circuit protective devices (SCPDs) . 21 5.5.1 General . 21 5.5.2 Rated conditional short-circuit current (Inc) and rated conditional short-circuit on one pole (Inc1) . 21 5.5.3 Operating characteristics of opening means for AFDDs according to 4.1.1 . 21 6 Marking and other product information . 22 6.1 Marking . 22 6.2 Additional marking for AFDDs according to 4.1.1 . 24 6.2.1 Marking of AFDDs . 24 6.2.2 Instructions for wiring and operation . 24 7 Standard conditions for operation in service and for installation . 25 7.1 Standard conditions . 25 7.2 Conditions of installation . 25 7.3 Pollution degree . 25 8 Requirements for construction and operation . 26 SIST EN 62606:2014

62606 © IEC:2013 – 3 – 8.1 General . 26 8.2 Mechanical design . 26 8.2.1 General . 26 8.2.2 Mechanism . 27 8.2.3 Clearances and creepage distances (see Annex B) . 28 8.2.4 Screws, current-carrying parts and connections . 31 8.2.5 Terminals for external conductors . 31 8.3 Protection against electric shock . 33 8.4 Dielectric properties and isolating capability . 34 8.5 Temperature rise . 34 8.5.1 Temperature-rise limits . 34 8.5.2 Ambient air temperature . 35 8.6 Operating characteristics . 35 8.6.1 Operating characteristics of the protective device part . 35 8.6.2 Operating characteristics . 35 8.7 Mechanical and electrical endurance . 36 8.8 Performance at short-circuits currents . 36 8.9 Resistance to mechanical shock and impact . 36 8.10 Resistance to heat. 36 8.11 Resistance to abnormal heat and to fire . 36 8.12 Behaviour of AFDDs in case of overcurrents in the main circuit . 36 8.13 Behaviour of AFDDs in case of current surges caused by impulse voltages . 37 8.14 Reliability . 37 8.15 Electromagnetic compatibility (EMC) . 37 8.16 Masking test for correct operation behaviour in presence of various appliances connected to the load side . 37 8.17 Performance of the AFD test device . 37 9 Testing procedure . 38 9.1 General . 38 9.1.1 General testing procedure for the different type of AFDDs . 38 9.1.2 The characteristics of AFDDs are checked by means of type tests . 38 9.1.3 For certification purposes, type tests are carried out in test sequences. . 39 9.1.4 Routine tests to be carried out by the manufacturer on each device . 39 9.2 Test conditions . 39 9.3 Test of indelibility of marking . 40 9.4 Test of reliability of screws, current-carrying parts and connections . 41 9.5 Test of reliability of terminals for external conductors . 42 9.6 Verification of protection against electric shock . 43 9.7 Test of dielectric properties . 44 9.7.1 General . 44 9.7.2 Resistance to humidity . 44 9.7.3 Insulation resistance of the main circuit . 44 9.7.4 Dielectric strength of the main circuit . 45 9.7.5 Insulation resistance and dielectric strength of auxiliary circuits . 46 9.7.6 Capability of control circuits connected to the main circuit in respect of withstanding high d.c. voltages due to insulation measurements . 46 9.7.7 Verification of impulse withstand voltages (across clearances and across solid insulation) and of leakage current across open contacts . 47 9.8 Test of temperature-rise . 50 SIST EN 62606:2014

– 4 – 62606 © IEC:2013 9.8.1 Ambient air temperature . 50 9.8.2 Test procedure . 51 9.8.3 Measurement of the temperature of parts . 51 9.8.4 Temperature-rise of a part . 51 9.9 Verification of the operating characteristics . 51 9.9.1 General . 51 9.9.2 Series arc fault tests . 51 9.9.3 Parallel arc fault tests . 54 9.9.4 Masking test, verification of correct operation . 56 9.9.5 Unwanted tripping test . 57 9.10 Verification of mechanical and electrical endurance . 58 9.10.1 General test conditions . 58 9.10.2 Test procedure . 59 9.10.3 Condition of the AFDD after test . 59 9.11 Verification of the behaviour of the AFDD under short-circuit conditions . 59 9.11.1 General . 59 9.11.2 Short-circuit tests for AFDDs according to 4.1.1 . 60 9.12 Verification of resistance to mechanical shock and impact . 68 9.12.1 Mechanical shock . 68 9.12.2 Mechanical impact . 68 9.13 Test of resistance to heat . 71 9.14 Test of resistance to abnormal heat and to fire . 72 9.15 Verification of the trip-free mechanism . 73 9.15.1 General test conditions . 73 9.15.2 Test procedure . 73 9.16 Test of resistance to rusting . 73 9.17 Verification of limiting values of the non-operating current under overcurrent conditions . 73 9.18 Verification of behaviour of AFDDs in case of current surges caused by impulse voltages . 74 9.18.1 General . 74 9.18.2 Verification of behaviour at surge currents up to 3 000 A (8/20 µs surge current test) . 74 9.19 Verification of reliability . 74 9.19.1 General . 74 9.19.2 Climatic test . 75 9.19.3 Test with temperature of 40 °C . 76 9.20 Verification of ageing of electronic components . 77 9.21 Electromagnetic compatibility (EMC) . 77 9.21.1 General . 77 9.21.2 EMC tests covered by other clauses of the present standard . 77 9.21.3 EMC tests to be performed . 77 9.21.4 AFDDs Performance criteria . 79 9.22 Verification of protection due to overvoltage due to a broken neutral in a three phase system . 80 Annex A (normative)
Test sequence and number of samples to be submitted for certification purposes . 102 Annex B (normative)
Determination of clearances and creepage distances . 109 Annex C (normative)
Arrangement for the detection of the emission of ionized gases during short-circuit tests . 114 SIST EN 62606:2014

62606 © IEC:2013 – 5 – Annex D (normative)
Additional requirements and tests for AFDDs according to the classification 4.1.3 designed to be assembled on site together with a main protective device (circuit-breaker or RCCB or RCBO) . 117 Annex E (normative)
Routine tests . 121 Annex F (informative)
Description of the shaker arc test in 9.10.2 . 122 Annex IA (informative)
Methods of determination of short-circuit power-factor . 124 Annex IB (informative)
Examples of terminal designs . 126 Annex IC (informative)
Correspondence between ISO and AWG copper conductors . 129 Annex ID (informative)
Follow-up testing program for AFDDs . 130 Annex IE (informative)
SCPDs for short-circuit tests . 134 Annex J (normative)
Particular requirements for AFDDs with screwless type
terminals for external copper conductors . 136 Annex K (normative)
Particular requirements for AFDDs with flat quick-connect terminations . 144 Annex L (normative)
Specific requirements for AFDDs with screw-type terminals for
external untreated aluminium conductors and with aluminium screw-type terminals for use with copper or with aluminium conductors . 151 Bibliography . 161
Figure 1 – Thread forming tapping screw . 80 Figure 2 – Thread cutting tapping screw . 80 Figure 3 – Standard test finger (9.6) . 81 Figure 4 – Test circuit for series arc fault tests . 82 Figure 5 – Arc generator . 82 Figure 6 – Test circuit for parallel arc fault tests. 82 Figure 7 – Test circuit for parallel arc cable cutting test . 82 Figure 8 – Test apparatus . 83 Figure 9 – Test for verification of correct operation
in case of parallel arc to ground . 83 Figure 10 – Test circuit for masking tests
(inhibition and disturbing loads) . 83 Figure 11 – Test configuration for masking tests . 84 Figure 12 – EMI filter 1 for masking tests . 84 Figure 13 – EMI filter 2 for masking tests . 85 Figure 14 – EMI filter description installed in Figure 13 . 85 Figure 15 – Test circuit for masking tests with line impedance . 85 Figure 16 – Cross talk test . 86 Figure 17 – Controlled current test circuit . 86 Figure 18 – Controlled current with delay angle 45 °, 90 ° and 135 ° . 87 Figure 19 – Short circuit test . 88 Figure 20 – Typical diagram for short circuit tests ((9.11.2.4c) . 89 Figure 21 – Detail of impedance Z, Z1 and Z2. 90 Figure 22 – Example of calibration record for short-circuit test (9.11.2.2 j) . 90 Figure 23 – Mechanical shock test apparatus (9.12.1) . 91 Figure 24 – Mechanical impact test apparatus (9.12.2.2) . 92 Figure 25 – Striking element for pendulum impact test apparatus (9.12.2.2). 93 Figure 26 – Mounting support for sample for mechanical impact test
(9.12.2.2). 94 SIST EN 62606:2014

– 6 – 62606 © IEC:2013 Figure 27 – Example of mounting of unenclosed AFDD for mechanical impact test (9.12.2.2) . 95 Figure 28 – Example of mounting of panel mounting type AFDD for the mechanical impact test (9.12.2.2) . 96 Figure 29 – Application of force for mechanical test of rail mounted AFDD (9.12.2.3) . 97 Figure 30 – Ball-pressure test apparatus (9.13.2) . 97 Figure 31 – Surge current impulse 8/20 µs . 98 Figure 32 – Test circuit for the surge current test at AFDDs . 98 Figure 33 – Stabilizing period for reliability test (9.19.2.3) . 99 Figure 34 – Reliability test cycle (9.19.2.3) . 100 Figure 35 – Example for test circuit for verification of ageing of electronic components (9.20) . 101 Figure 36 – Preparation of the cable specimens (9.9.2.6) . 101 Figure 37 – Example of arc voltage and current waveform obtained with cable specimen . 101 Figure C.1 – Test arrangement . 115 Figure C.2 – Grid . 116 Figure C.3 – Grid circuit . 116 Figure F.1 – Gap Measurement. 122 Figure F.2 – Shaker arc test table with Loose Terminals . 122 Figure F.3 – AFDD connected to the shaker arc table during test . 123 Figure IB.1 – Examples of pillar terminals . 126 Figure IB.2 – Examples of screw terminals and stud terminals . 127 Figure IB.3 – Examples of saddle terminals . 128 Figure IB.4 – Examples of lug terminals . 128 Figure IE-1 – Test apparatus for the verification of the
minimum I2t and Ip values to be withstood by the AFDD . 135 Figure J.1 – Connecting samples . 141 Figure J.2 – Examples of screwless-type terminals . 143 Figure K.1 – Example of position of the thermocouple
for measurement of the temperature-rise . 147 Figure K.2 – Dimensions of male tabs . 148 Figure K.3 – Dimensions of round dimple detents (see Figure K.2) . 149 Figure K.4 – Dimensions of rectangular dimple detents (see Figure K.2) . 149 Figure K.5 – Dimensions of hole detents . 149 Figure K.6 – Dimensions of female connectors . 150 Figure L.1 – General arrangement for the test . 159 Figure L.2 – Example for the use of the terminals in the AFDD . 159 Figure L.3 – Example for the use
of the terminals in the AFDD . 160 Figure L.4 – Example for the use
of the terminals in the AFDD . 160 Figure L.5 – Example for the use
of the terminals in the AFDD . 160 Figure L.6 – Example for the use
of the terminals in the AFDD . 160
Table 1 – Limit values of break time for Un = 230 V AFDDs . 20 Table 2 – Limit values of break time for Un = 120 V AFDDs . 20 SIST EN 62606:2014

62606 © IEC:2013 – 7 – Table 3 – Maximum allowed number of arcing half-cycles within 0,5 s for Un 230 V AFDDs and Un = 120 V AFDDs . 20 Table 4 – Rated impulse withstand voltage as a function
of the nominal voltage of the installation . 21 Table 5 – Marking and position of marking . 22 Table 6 – Standard conditions for operation in service . 25 Table 7 – Minimum clearances and creepage distances . 29 Table 8 – Connectable cross-sections of copper conductors for screw-type terminals . 32 Table 9 – Temperature-rise values . 35 Table 10 – List of type tests . 39 Table 11 – Test copper conductors corresponding to the rated currents . 40 Table 12 – Screw thread diameters and applied torques . 41 Table 13 – Pulling forces . 42 Table 14 – Test voltage of auxiliary circuits . 46 Table 15 – Test voltage for verification of impulse withstand voltage . 48 Table 16 – Test voltage for verifying the suitability for isolation, referred to the rated impulse withstand voltage of the AFDD and the altitude where the test is carried out . 49 Table 17 – Tests to be made to verify the behaviour of AFDDs under short-circuit conditions . 61 Table 18 – Minimum values of l2t and lp . 62 Table 19 – Power factors for short-circuit tests . 63 Table 20 – Tests already covered in this standard . 77 Table 21 – Tests to be applied for EMC . 78 Table A.1 – Test sequences for AFDDs classified according to 4.1.1 . 103 Table A.2 – Test sequences for AFDDs classified according to 4.1.2 . 104 Table A.3 – Test sequences for AFDDs classified according to 4.1.3 . 105 Table A.4 – Number of samples for full test procedure . 106 Table A.5 – Number of samples for simplified test procedure . 108 Table ID.1 – Test sequences during follow-up inspections . 130 Table ID.2 – Number of samples to be tested. 133 Table IE.1 – Indication of silver wire diameters as a function
of rated currents and short-circuit currents . 134 Table J.1 – Connectable conductors . 138 Table J.2 – Cross-sections of copper conductors connectable to screwless-type terminals . 139 Table J.3 – Pull forces . 140 Table K.1 – Informative table on colour code of female connectors
in relationship with the cross section of the conductor . 145 Table K.2 – Overload test forces . 146 Table K.3 – Dimensions of tabs . 147 Table K.4 – Dimensions of female connectors . 150 Table L.1 – Marking for terminals . 152 Table L.2 – Connectable cross-sections of aluminium conductors
for screw-type terminals . 153 Table L.3 – List of tests according to the material of conductors and terminals . 154 Table L.4 – Connectable conductors and their theoretical diameters . 154 SIST EN 62606:2014

– 8 – 62606 © IEC:2013 Table L.5 – Cross sections (S) of aluminium test conductors
corresponding to the rated currents . 155 Table L.6 – Test conductor length . 156 Table L.7 – Equalizer and busbar dimensions . 156 Table L.8 – Test current as a function of rated current . 158 Table L.9 – Example of calculation for determining the average temperature deviation D . 158
62606 © IEC:2013 – 9 – INTERNATIONAL ELECTROTECHNICAL COMMISSION ____________
GENERAL REQUIREMENTS FOR ARC FAULT DETECTION DEVICES
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 Reports, Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with may participate in this preparatory work. International, governmental and non-governmental organizations liaising with the IEC also participate in th
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