1、BRITISH STANDARDBS EN 61557-1:2007Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. Equipment for testing, measuring or monitoring of protective measures Part 1: General requirementsThe European Standard EN 61557-1:2007 has the status of a British StandardICS
2、17.220.20; 29.080.01; 29.240.01g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 61557-1:2007This British Standard was published under the autho
3、rity of the Standards Policy and Strategy Committee on 29 June 2007 BSI 2007ISBN 978 0 580 50862 2National forewordThis British Standard was published by BSI. It is the UK implementation of EN 61557-1:2007. It is identical with IEC 61557-1:2007. It supersedes BS EN 61557-1:1997, which will be withdr
4、awn on 1 March 2010.The UK participation in its preparation was entrusted to Technical Committee PEL/85, Measuring equipment for electrical and electromagnetic quantities.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purpo
5、rt to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunity from legal obligations.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARD EN 61557-1 NORME EUROPENNE EUROPISCH
6、E NORM March 2007 CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2007 CENELEC - All rights of exploitation in any form and by a
7、ny means reserved worldwide for CENELEC members. Ref. No. EN 61557-1:2007 E ICS 17.220.20; 29.080.01; 29.240.01 Supersedes EN 61557-1:1997English version Electrical safety in low voltage distribution systems up to 1 000 V a.c. and 1 500 V d.c. - Equipment for testing, measuring or monitoring of prot
8、ective measures - Part 1: General requirements (IEC 61557-1:2007) Scurit lectrique dans les rseaux de distribution basse tension de 1 000 V c.a. et 1 500 V c.c. - Dispositifs de contrle, de mesure ou de surveillance de mesures de protection - Partie 1: Exigences gnrales (CEI 61557-1:2007) Elektrisch
9、e Sicherheit in Niederspannungsnetzen bis AC 1 000 V und DC 1 500 V - Gerte zum Prfen, Messen oder berwachen von Schutzmanahmen - Teil 1: Allgemeine Anforderungen (IEC 61557-1:2007) This European Standard was approved by CENELEC on 2007-03-01. CENELEC members are bound to comply with the CEN/CENELEC
10、 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 CENE
11、LEC 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.
12、 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, Slo
13、vakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Foreword The text of document 85/290/FDIS, future edition 2 of IEC 61557-1, prepared by IEC TC 85, Measuring equipment for electrical and electromagnetic quantities, was submitted to the IEC-CENELEC parallel vote and was approved by
14、 CENELEC as EN 61557-1 on 2007-03-01. This European Standard supersedes EN 61557-1:1997. The following changes were made with respect to EN 61557-1:1997: revision of the definitions; addition of influence quantities E9and E10; the subclause on Electromagnetic compatibility was complemented; inclusio
15、n of performance monitoring devices in the introduction; addition of new requirements for operating instructions. This Part 1 specifies the general requirements. Parts 2 to 8 of EN 61557, which are to be used in conjunction with this Part 1, comprise specific specifications for individual measuring
16、equipment. 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) 2007-12-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2010-03-01
17、 Annex ZA has been added by CENELEC. _ Endorsement notice The text of the International Standard IEC 61557-1:2007 was approved by CENELEC as a European Standard without any modification. _ EN 61557-1:2007 2 CONTENTS INTRODUCTION.4 1 Scope.5 2 Normative references5 3 Terms and definitions .6 4 Requir
18、ements .10 4.1 Operating uncertainty (B), percentage operating uncertainty (B %) .11 4.2 Rated operating conditions 12 4.3 Battery check facility12 4.4 Terminals 12 4.5 Class of protection.12 4.6 Class of pollution .12 4.7 Overvoltage category.12 4.8 Measuring category .12 4.9 Electromagnetic compat
19、ibility.13 4.10 Vibration test .13 5 Marking and operating instructions13 5.1 Marking .13 5.2 Operating instructions14 6 Tests 14 6.1 Influence of position.14 6.2 Influence of temperature14 6.3 Influence of the supply voltage.15 6.4 Battery check facility15 6.5 Protection class.15 6.6 Terminals 15 6
20、.7 Mechanical requirements .15 6.8 Marking and operating instructions.15 Annex ZA (normative) Normative references to international publications with theircorresponding European publications.17 EN 61557-1:2007 3 Bibliography16 INTRODUCTION IEC 60364-6:2006, stipulates standardized conditions for the
21、 initial test of power installations in TN, TT or IT (IEC 60364) systems, for continuous monitoring and for testing these installations after modifications. In addition to general references for the execution of the tests, IEC 60364-6 contains requirements which have to be verified by measurement. O
22、nly in a few instances, for example when measuring the insulation resistance, the standard contains details of the characteristics of the measuring device to be used. Circuits which are given as examples in IEC 60364-6, and referred to within the text, are generally not suitable for practical use. T
23、he tests are carried out in installations where hazardous voltages can occur and where careless use or a defect in the equipment can easily cause an accident. Therefore, the technician has to rely on measuring devices which ensure, apart from simplification of the measurements, safe test methods. Th
24、e application of the general safety regulations for electrical and electronic measuring devices (IEC 61010-1) for testing the protective measures is not sufficient in itself. The execution of measurements in the installation can cause hazards not only to the technician, but, depending on the measuri
25、ng method, also to third persons. Likewise, reliable and comparable results of measurement with measuring devices from different manufacturers are an important precondition in order to obtain an objective judgement about the installation, for example when the installation is handed over for periodic
26、 tests, for continuous insulation monitoring or in the case of performance warranty. This series of standards has been established with the aim of stipulating common principles for measuring and monitoring equipment for testing electrical safety and measuring performances in systems with nominal vol
27、tages up to 1 000 V a.c. and 1 500 V d.c. which correspond to the above-mentioned characteristics. For this reason, the following common specifications have been stipulated in Part 1 and other individual parts of the series of standards: protection against extraneous voltages; protection class II (e
28、xcept insulation monitoring devices); specifications and safety precautions against hazardous touch voltages at the measuring device; specifications for the judgement of connection configurations with respect to wiring errors in the tested equipment; special mechanical requirements; measuring method
29、s; measured quantity; specification of the maximum operating uncertainty; specifications for testing the influencing quantity and the calculation of the operational uncertainty; uncertainties of the measuring device at the thresholds specified in the respective standards; specification of the nature
30、 of type and routine tests and the required conditions for testing. EN 61557-1:2007 4 ELECTRICAL SAFETY IN LOW VOLTAGE DISTRIBUTION SYSTEMS UP TO 1 000 V a.c. AND 1 500 V d.c. EQUIPMENT FOR TESTING, MEASURING OR MONITORING OF PROTECTIVE MEASURES Part 1: General requirements 1 Scope This part of IEC
31、61557 specifies the general requirements for measuring and monitoring equipment for testing the electrical safety in low voltage distribution systems with nominal voltages up to 1 000 V a.c. and 1 500 V d.c. When measuring equipment or measuring installations involve measurement tasks of various mea
32、suring equipment covered by this series of standards, then the part of this series of standards relevant to each of the measurement tasks is applicable. NOTE The term “measuring equipment“ will hereafter be used to designate “testing, measuring and monitoring equipment“. 2 Normative references The f
33、ollowing 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. IEC 60038:1983 1), IEC standard voltages Amendment 1:
34、1994 Amendment 2: 1997 IEC 60364-6:2006, Electrical installations of buildings Part 6: Verification IEC 60664-1, Insulation coordination for equipment within low-voltage systems - Part 1: Principles, requirements and tests IEC 60529: 2001, Degrees of protection provided by enclosures (IP code) IEC 6
35、1010-1:2001, Safety requirements for electrical equipment for measurement, control and laboratory use Part 1: General requirements IEC 61010-2-030, Safety requirements for electrical equipment for measurement, control, and laboratory use Part 2-030: Special requirements for testing and measuring cir
36、cuits 2)IEC 61326-2-2:2005, Electrical equipment for measurement, 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
37、systems 1)There exists a consolidated edition (6.2), which includes IEC 60038:1983 and its Amendments 1 (1994) and 2 (1997). 2)To be published. EN 61557-1:2007 5 IEC 61326-2-4:2006, Electrical equipment for measurement, control and laboratory use, - EMC requirements - Part 2: Particular requirements
38、 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 61557-9IEC 61557-2, Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c
39、. Equipment for testing, measuring or monitoring of protective measures Part 2: Insulation resistance IEC 61557-3, Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. Equipment for testing, measuring or monitoring of protective measures Part 3: Loop impedance IEC
40、61557-4, Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. Equipment for testing, measuring or monitoring of protective measures Part 4: Resistance of earth connection and equipotential bonding IEC 61557-5, Electrical safety in low voltage distribution systems u
41、p to 1000 V a.c. and 1500 V d.c. Equipment for testing, measuring or monitoring of protective measures Part 5: Resistance to earth IEC 61557-6, Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. Equipment for testing, measuring or monitoring of protective measure
42、s Part 6: Residual current devices (RCD) in TT and TN systems IEC 61557-7, Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. Equipment for testing, measuring or monitoring of protective measures Part 7: Phase sequence IEC 61557-8, Electrical safety in low voltag
43、e distribution systems up to 1000 V a.c. and 1500 V d.c. Equipment for testing, measuring or monitoring of protective measures Part 8: Insulation monitoring devices for IT systems IEC 61557-9, Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. Equipment for testi
44、ng, measuring or monitoring of protective measures Part 9: Equipment for insulation fault location in IT systems IEC 61557-10, Electrical safety in low voltage distribution systems up to 1000 V a.c. and 1500 V d.c. Equipment for testing, measuring or monitoring of protective measures Part 10: Combin
45、ed measuring equipment for testing, measuring or monitoring of protective measures 3 Terms and definitions For the purposes of this document, the following definitions apply. 3.1 nominal voltage of the distribution system (Un) voltage by which a distribution system or equipment is designated and to
46、which certain operating characteristics are referred IEC 60038, Clause 1, modified EN 61557-1:2007 6 3.2 operating voltage in a system the value of the voltage under normal conditions, at a given instant and a given point of the system IEV 601-01-22, modified 3.3 voltage against earth Uoa) in distri
47、bution systems with an earthed neutral point, the voltage between a phase conductor and the earthed neutral point; b) in all other distribution systems, the voltage present between the remaining phase conductors and earth when one of the phase conductors is shorted to earth 3.4 fault voltage Ufvolta
48、ge appearing under fault conditions between exposed conductive parts (and/or extraneous conductive parts) and earth 3.5 (effective) touch voltage Utvoltage between conductive parts when touched simultaneously by a person or an animal IEV 826-11-05 3.6 conventional touch voltage limit ULmaximum value
49、 of the touch voltage which is permitted to be maintained indefinitely in specified conditions of external influences and is usually equal to 50 V a.c., r.m.s. or 120 V ripple free d.c. IEV 826-02-04, modified 3.7 rated range of voltages voltage range for which the measuring and monitoring equipment is intended to be used and for which it has been designed 3.8 rated supply voltage USvoltage at a point where the measuring equipm
