1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN 50550:2011Power frequency overvoltageprotective device forhousehold and similarapplications (POP)Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 22/09/2011 07:54, Un
2、controlled Copy, (c) BSIBS EN 50550:2011 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 50550:2011. The UK participation in its preparation was entrusted to T e c h n i c a l Committee PEL/23/1, Circuit breakers and similar equipment for household use.A list of
3、 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 2011 ISBN 978 0 580 69732 6 ICS 29.120.50 Compliance with a British
4、 Standard cannot confer immunity from legal obligations.This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 June 2011.Amendments issued since publicationDate T e x t a f f e c t e dLicensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 22/09/2
5、011 07:54, Uncontrolled Copy, (c) BSIBS EN 50550:2011EUROPEAN STANDARD EN 50550 NORME EUROPENNE EUROPISCHE NORM February 2011 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Management Ce
6、ntre: Avenue Marnix 17, B - 1000 Brussels 2011 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 50550:2011 E ICS 29.120.50 English version Power frequency overvoltage protective device for household and similar applications (POP) D
7、ispositif de protection contre les surtensions frquence industrielle pour les applications domestiques et analoguesSchutzeinrichtung gegen netzfrequente berspannungen fr Hausinstallationen und fr hnliche Anwendungen This European Standard was approved by CENELEC on 2011-01-17. CENELEC members are bo
8、und 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
9、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 sam
10、e status as the official versions. 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 Netherla
11、nds, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 22/09/2011 07:54, Uncontrolled Copy, (c) BSIBS EN 50550:2011EN 50550:2011 2 Foreword This European Standard was prepared by the CENELE
12、C BTTF 128-1, Power frequency overvoltage protective device for household and similar applications. It was submitted to the formal vote and was approved by CENELEC as EN 50550 on 2011-01-15. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
13、 rights. CEN and CENELEC shall not be held responsible for identifying any or all such patent rights. The following dates are proposed: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2012-01-15 latest date
14、by which the national standards conflicting with the EN have to be withdrawn (dow) 2014-01-15 This European Standard has been prepared under a mandate given to CENELEC by the European Commission and the European Free Trade Association and covers essential requirements of EC Directive 2004/108/EC. Se
15、e Annex ZZ. _ Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 22/09/2011 07:54, Uncontrolled Copy, (c) BSIBS EN 50550:2011 3 EN 50550:2011 Contents 1 Scope 52 Normative references 63 Terms and definitions . 74 Classification . 84.1 According to the method of construction . 84.2 According to t
16、he main protective device . 84.3 According to the range of ambient air temperature (only for POP according to 4.2.2 and 4.2.3) . 84.4 According to the number of monitored line to neutral conductor voltages 85 Characteristics. 95.1 Summary of characteristics . 95.2 Limit values of the break times and
17、 non-actuating times . 96 Marking and other product information 96.1 Standard marking 96.2 Additional marking . 107 Standard conditions for operation in service . 117.1 General 117.2 Conditions of installation . 117.3 Pollution degree 118 Requirements for construction and operation . 118.1 Mechanica
18、l design 118.2 Protection against electric shock 168.3 Dielectric properties and isolating capability . 168.4 Temperature rise . 168.5 Operating characteristic 168.6 Mechanical and electrical endurance 168.7 Performance at short-circuit currents 178.8 Resistance to mechanical shock and impact 178.9
19、Resistance to heat 178.10 Resistance to abnormal heat and to fire . 178.11 Ageing of electronic components 178.12 Behaviour at low ambient air temperature 188.13 Electromagnetic compatibility . 188.14 Safety performance of overstressed POPs. 189 Tests . 189.1 General 189.2 Test condition 199.3 Verif
20、ication of the influence of the POP on the correct operation of the main protective device . 199.4 Test of dielectric properties . 219.5 Temperature rise . 219.6 Verification of the operating characteristics 219.7 Verification of the mechanical and electrical endurance . 239.8 Tests of creepage dist
21、ances and clearances for electronic circuits (abnormal conditions) 249.9 Requirements for capacitors and specific resistors and inductors used in electronic circuits . 279.10 Electromagnetic compatibility . 289.11 Test of safety performance of overstressed POPs . 329.12 Test of reliability of screws
22、, current-carrying parts and connections 329.13 Test of reliability of terminals for external conductors . 329.14 Verification of protection against electric shock 329.15 Verification of resistance to mechanical shock and impact 339.16 Test of resistance to heat 339.17 Resistance to abnormal heat an
23、d to fire . 339.18 Verification of the correct operation at low ambient air temperatures for RCDs for use at temperatures between -25 C and +40 C 33Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 22/09/2011 07:54, Uncontrolled Copy, (c) BSIBS EN 50550:2011EN 50550:2011 4 Annex A (normative) T
24、est sequences . 36Annex B (normative) Determination of clearances and creepage distances 37Annex C (informative) Examples of terminal designs . 39Annex D (normative) Number of samples for full test procedure 42Annex ZZ (informative) Coverage of Essential Requirements of EC Directives . 44Bibliograph
25、y 45Figures Figure 1 Minimum creepage distances and clearances measured in millimetres . 34Figure 2 Minimum creepage distances and clearances as a function of peak value of operating voltage 35Figure B.1 Illustrations of the application of creepage distances 38Figure C.1 Examples of pillar terminals
26、 . 39Figure C.2 Examples of screw terminals and stud terminals . 40Figure C.3 Examples of saddle terminals 41Figure C.4 Examples of lug terminals 41Tables Table 1 Limit values of break times and non-actuating times 9Table 2 Minimum clearances and creepage distances 13Table 3 Maximum permissible temp
27、eratures under abnormal conditions . 26Table 4 Low frequency immunity test conditions . 29Table 5 High frequency immunity test conditions 30Table 6 Test conditions for electrostatic discharges 31Table 7 Emissions test conditions 31Table A.1 Test sequences . 36Table D.1 Number of samples for full tes
28、t procedure 42Table D.2 Additional tests for POP already fully tested together with one kind of main protective device . 43Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 22/09/2011 07:54, Uncontrolled Copy, (c) BSIBS EN 50550:2011 5 EN 50550:2011 1 Scope This European Standard applies to pow
29、er frequency overvoltage protection devices (hereafter referred to as “POP”) for household and similar uses, with a rated frequency of 50 Hz, a rated voltage 230 V a.c. (between phase and neutral), intended to be used in combination with a main protective device being either a CB in compliance with
30、EN 60898-1 or EN 60898-2, a RCCB in compliance with EN 61008-1 or a RCBO in compliance with EN 61009-1. NOTE 1 Requirements for POPs in combination with switching devices other than a main protective device, or a POP integrated in a MPD, are under consideration. NOTE 2 Requirements for POP with func
31、tional earth connection regarding temporary overvoltage withstand are under consideration. NOTE 3 A POP is not a protective device to be used for automatic disconnection of the supply in the meaning of HD 60364-4-41. They are intended for use in an environment with pollution degree 2 and overvoltage
32、 category III. They can be designed for factory assembly or for assembly on site. These devices are intended to mitigate the effects of power frequency overvoltages between phase and neutral conductor (e.g. caused by loss of neutral conductor in the three phase supply upstream the POP) for downstrea
33、m equipment by actuating the main protective device when an overvoltage between phase and neutral is detected. NOTE 4 To mitigate means in this context that the POP will provide protection in most cases of power frequency overvoltages. NOTE 5 Protection in case of overvoltage between phases is under
34、 consideration. In case of phase to phase electrical supply system with rated voltage between phases 230 V a.c. and no neutral conductor, one line monitored POP in compliance to this standard can be used according to manufacturers instruction. The POP does not impair the protective function of the m
35、ain protective device. This European Standard does not apply for protection against common mode over voltages. This European Standard does not apply to surge protective devices. This European Standard states: the definitions of terms used for POP (Clause 3); the classification of POP (Clause 4); the
36、 characteristics of POP (Clause 5); the preferred values of the operating and influencing quantities (Clause 5); the marking and information to be provided for POP (Clause 6); the standard conditions for installation and operation in service (Clause 7); the requirements for construction and operatio
37、n (Clause 8); the list of minimum requirements to be tested (Clause 9). Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 22/09/2011 07:54, Uncontrolled Copy, (c) BSIBS EN 50550:2011EN 50550:2011 6 2 Normative references The following referenced documents are indispensable for the application o
38、f this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 50160:2010 Voltage characteristics of electricity supplied by public electricity networks EN 55014-1:2006 + A1:2009 Elec
39、tromagnetic compatibility Requirements for household appliances, electric tools and similar apparatus Part 1: Emission (CISPR 14-1:2005 + A1:2008) EN 55022:2010 Information technology equipment Radio disturbance characteristics Limits and methods of measurement (CISPR 22:2008, mod.) EN 60065:2002 +
40、corr. Aug. 2007 Audio, video and similar electronic apparatus Safety requirements (IEC 60065:2001, mod.) EN 60384-14 Fixed capacitors for use in electronic equipment Part 14: Sectional specification Fixed capacitors for electromagnetic interference suppression and connection to the supply mains (IEC
41、 60384-14) EN 60664-1:2007 Insulation coordination for equipment within low-voltage systems Part 1: Principles, requirements and tests (IEC 60664-1:2007) EN 60664-3 Insulation coordination for equipment within low-voltage systems Part 3: Use of coating, potting or moulding for protection against pol
42、lution (IEC 60664-3) EN 60898-1:2003 + corr. Feb. 2004 + A1:2004 + A11:2005 + A12:2008 Electrical accessories Circuit breakers for overcurrent protection for household and similar installations Part 1: Circuit-breakers for a.c. operation (IEC 60898-1:2002, mod. + A1:2002, mod.) EN 60898-2:2006 Elect
43、rical accessories Circuit-breakers for overcurrent protection for household and similar installations Part 2: Circuit-breakers for a.c. and d.c. operation (IEC 60898-2:2000, mod. + A1:2003, mod.) EN 60998-2-3 Connecting devices for low-voltage circuits for household and similar purposes Part 2-3: Pa
44、rticular requirements for connecting devices as separate entities with insulation-piercing clamping units (IEC 60998-2-3) EN 61000 series Electromagnetic compatibility (EMC) (IEC 61000 series) EN 61008 series Residual current operated circuit-breakers without integral overcurrent protection for hous
45、ehold and similar uses (RCCBs) (IEC 61008 series) EN 61008-1:2004 + A11:2007 + A12:2009 Residual current operated circuit-breakers without integral overcurrent protection for household and similar uses (RCCBs) Part 1: General rules (IEC 61008-1:1996, mod. + A1:2002, mod.) EN 61009 series Residual cu
46、rrent operated circuit-breakers with integral overcurrent protection for household and similar uses (RCBOs) (IEC 61009 series) EN 61009-1:2004 + corr. Jul. 2006 + A11:2008 + A12:2009 + A13:2009 Residual current operated circuit-breakers with integral overcurrent protection for household and similar
47、uses (RCBOs) Part 1: General rules (IEC 61009-1:1996, mod. + A1:2002, mod. + corrigendum May 2003) Licensed Copy: Wang Bin, ISO/EXCHANGE CHINA STANDARDS, 22/09/2011 07:54, Uncontrolled Copy, (c) BSIBS EN 50550:2011 7 EN 50550:2011 EN 61543:1995 + corr. Dec. 1997 + A11:2003 + corr. May. 2004 + A12:20
48、05 + A2:2006 Residual current-operated protective devices (RCDs) for household and similar use Electromagnetic compatibility (IEC 61543:1995 + A2:2005) EN 61558-1 Safety of power transformers, power supplies, reactors and similar products Part 1: General requirements and tests (IEC 61558-1) EN 61558-2 series Safety of power transformers, power supplies, reactors and similar products Part 2-X: Particular requirements and tests (IEC 61558-2 series) EN ISO 306 Plastics Thermoplastic materials D
