1、BRITISH STANDARD BS89-5:1990 EN60051-5: 1989 IEC51-5:1985 Direct acting indicating analogue electrical measuring instruments and their accessories Part 5: Specification for special requirements for phase meters, power factor meters and synchroscopes This European Standard EN60051-5 has the status of
2、 a British Standard UDC: 621.317.77.037.33BS89-5:1990 This British Standard was published under the authority ofthe Board of BSI and comes intoeffect on 31 August1990 BSI07-1999 First published as BS89 October1919 Second edition August1926 Third edition September1937 Fourth edition February1954 Fift
3、h edition March1977 Published as BS89-5 August1990 The following BSI references relate to the work on this standard: Committee referencePEL/13 Draft for comment88/33510DC ISBN 0 580 18445 5 Cooperating organizations The European Committee for Electrotechnical Standardization (CENELEC), under whose s
4、upervision this European Standard was prepared, comprises the National Committees of the following countries. Austria Italy Belgium Luxemburg Denmark Netherlands Finland Norway France Portugal Germany Spain Greece Sweden Iceland Switzerland Ireland UnitedKingdom Amendments issued since publication A
5、md. No. Date of issue CommentsBS89-5:1990 BSI 07-1999 i Contents Page Cooperating organizations Inside front cover National foreword ii Brief history 2 Text of EN60051-5 3 National appendix W Inside back coverBS89-5:1990 ii BSI 07-1999 National foreword This British Standard has been prepared under
6、the direction of the Power Electrical Engineering Standards Policy Committee and is the English language version of EN60051-5 “Direct acting indicating analogue electrical measuring instruments and their accessories Part 5: Special requirements for phase meters, power factor meters and synchroscopes
7、”, published by the European Committee for Electrotechnical Standardization (CENELEC). It is identical with the English language version of IEC Publication51-5 published by the International Electrotechnical Commission (IEC). This Part of BS89 together with Parts1,2,3,4,6,7,8 and9 of this standard s
8、upersedes BS89:1977, which is withdrawn. BS89 comprises the following Parts which will be the English language version of the listed European Standards. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their cor
9、rect application. Compliance with a British Standard does not of itself confer immunity from legal obligations. European Standard Corresponding Part of BS89 EN60051-1 Part1 Specification for definitions and general requirements common to all Parts EN60051-2 Part2 Specification for special requiremen
10、ts for ammeters and voltmeters EN60051-3 Part3 Specification for special requirements for wattmeters and varmeters EN60051-4 Part4 Specification for special requirements for frequency meters EN60051-5 Part5 Specification for special requirements for phase meters, power factor meters and synchroscope
11、s EN60051-6 Part6 Specification for special requirements for ohmeters (impedance meters) and conductance meters EN60051-7 Part7 Specification for special requirements for multi-function instruments EN60051-8 Part8 Specification for special requirements for accessories EN60051-9 Part9 Recommended tes
12、t methods Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, theEN title page, pages2 to10, an inside back cover and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the ame
13、ndment table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN60051-5 November 1989 UDC: 621.317.77.037.33 Key words: Electrical measuring instruments; analogue indicating instruments; direct acting measuring instruments; accessories for electrical measuring instruments;
14、 phase meters; power factor meters; synchronoscopes English version Direct acting indicating analogue electrical measuring instruments and their accessories Part5:Specialrequirements for phase meters, power factor meters and synchroscopes (IEC51-5 (1985) edition4) Appareils mesureurs lectriques indi
15、cateurs analogiques action directe et leurs accessoires Cinquime partie: Prescriptions particulires pour les phasemtres, les indicateurs de facteur de puissance et les synchronoscopes (CEI51-5 (1985) dition4) Direkt wirkende anzeigende elektrische Megerte und ihr Zubehr Megerte mit skalenanzeige Tei
16、l 5: Spezielle Anforderungen fr Phasenverschiebungswinkel-Megerte, Leistungsfaktor-MeBgerte und Synchronoskope (IEC51-5 (1985) Ausgabe4) This European Standard was ratified by CENELEC on11 September1989. CENELEC members are bond to comply with the requirements of the CENELEC Internal Regulations whi
17、ch 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 CENELEC Central Secretariat or to any CENELEC member. This
18、European Standard exists in three official versions (English, French and German). A version in any other language made by translation under the responsibility of a CENELEC member into its own language and notified to CENELEC Central Secretariat has the same status as the official versions. CENELEC m
19、embers are the national electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxemburg, Netherland, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom. CENELEC European Committee for Electrotechnical Standardization Comit Eu
20、ropen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels CENELEC1989 Copyright reserved to all CENELEC members Ref. No. EN60051-5:1989 EEN60051-5:1989 BSI 07-1999 2 Brief history The text of IEC-Publication51-5
21、(4th edition 1985) was submitted to the CENELEC members for unique acceptance. Technical text The text of the International Standard IEC51-5 (4th edition 1985) was approved by CENELEC on11 September1989 as a European Standard with the following editorial corrections: Page6, Table II-5, column4, for
22、“distortion of voltage and/or current components of the measured quantity”: replace3.7.3 by3.7.4. Page7, note2 c): replace “S.I.” by “SI”. The following dates are applicable: Contents Page Brief history 2 Foreword 3 1 Scope 3 2 Definitions 3 3 Description, classification and compliance 4 4 Reference
23、 conditions and intrinsic errors 4 5 Nominal range of use and variations 5 6 Further electrical and mechanical requirements 5 7 Constructional requirements 9 8 Information, general markings and symbols 9 9 Markings and symbols for terminals 9 10 Tests to prove compliance with this standard 9 Table I
24、-5 Reference conditions and tolerances, additional to those given in Table I-1, for testing purposes 4 Table II-5 Limits of the nominal range of use and permissible variations additional to those given in Table II-1 6 Table IV-5 Overloads of short duration 8 latest date of announcement of the EN at
25、national level (doa): 1990-03-01 date of latest publication of a new harmonized standard(dop): 1990-09-01 date of withdrawal of conflicting national standards (dow): 1990-09-01EN60051-5:1989 BSI 07-1999 3 Foreword 1) The formal decisions or agreements of the IEC on technical matters, prepared by Tec
26、hnical Committees on which all the National Committees having a special interest therein are represented, express, as nearly as possible, an international consensus of opinion on the subjects dealt with. 2) They have the form of recommendations for international use and they are accepted by the Nati
27、onal Committees in that sense. 3) In order to promote international unification, the IEC expresses the wish that all National Committees should adopt the text of the IEC recommendation for their national rules in so far as national conditions will permit. Any divergence between the IEC recommendatio
28、n and the corresponding national rules should, as far as possible, be clearly indicated in the latter. Preface This standard has been prepared by IEC Technical Committee No.85: Measuring Equipment for Basic Electrical Quantities (former Sub-Committee13B: Electrical Measuring Instruments). This fourt
29、h edition replaces the third edition of IEC Publication51. This standard constitutes Part5. The general layout for the revised Publication51 is as follows: Part1: Definitions and General Requirements Common to all Parts; Part2: Special Requirements for Ammeters and Voltmeters; Part3: Special Require
30、ments for Wattmeters and Varmeters; Part4: Special Requirements for Frequency Meters; Part5: Special Requirements for Phase Meters, Power Factor Meters and Synchroscopes; Part6: Special Requirements for Ohmmeters (Impedance Meters) and Conductance Meters; Part7: Special Requirements for Multi-functi
31、on Instruments; Part8: Special Requirements for Accessories; Part9: Recommended Test Methods. Parts2 to9 are not complete in themselves and shall be read in conjunction with Part1. All of these parts are arranged in the same format and a standard relationship between subject and clause number is mai
32、ntained throughout. In addition, tables, figures and appendices add a suffix to the part number in order to differentiate the parts. This re-arrangement will assist the reader of IEC Publication51 to distinguish information relating to the different types of instruments. The text of this standard is
33、 based upon the following documents: Further information can be found in the relevant Reports on Voting indicated in the table above. 1 Scope 1.1 Part5 of this standard applies to direct acting indicating analogue phase meters, power factor meters and synchroscopes. 1.2 This part also applies to non
34、-interchangeable accessories (as defined in Sub-clause2.1.15.3 of Part1) used with phase meters, power factor meters and synchroscopes. 1.3 This part also applies to a phase meter or power factor meter whose scale marks do not correspond directly to its electrical input quantity, provided that the r
35、elationship between them is known. 1.4 to1.8 See Part1. 2 Definitions See Part1. Six Months Rule Report on Voting Two Months Procedure Report on Voting 13B(CO)88 13B(CO)97 13B(CO)103 85(CO)1EN60051-5:1989 4 BSI 07-1999 3 Description, classification and compliance 3.1 Description Phase meters, power
36、factor meters and synchroscopes shall be described according to their method of operation as given in Sub-clause2.2 of Part1. 3.2 Classification Phase meters, power factor meters and synchroscopes shall be classified in one of the accuracy classes denoted by the following class indices: 0.1, 0.2, 0.
37、3, 0.5, 1, 1.5, 2, 2.5, 3, 5. 3.3 Compliance with the requirements of this standard See Part 1. 4 Reference conditions and intrinsic errors 4.1 Reference conditions 4.1.1 The reference values of the influence quantities shall be as given in Table I-1 and Table I-5. Table I-5 Reference conditions and
38、 tolerances, additional to those given in Table I-1,fortesting purposes 4.1.2 See Part1. 4.1.3 Reference conditions different from those given in Table I-1 and Table I-5 may be specified, but they shall then be marked in accordance with Clause8 of Part1. 4.2 Limits of intrinsic error, fiducial value
39、 See Part1. For a synchroscope, the accuracy requirements apply only at the synchronizing mark. 4.2.1 Correspondence between intrinsic error and accuracy class See Part1. 4.2.2 Fiducial value The fiducial value corresponds to90 electrical degrees. The class index is marked using Symbol E-1 given in
40、Table III-1 of Part1 (see Part1, Clause8). Influence quantity Reference conditions unless otherwise marked Tolerance permitted for testing purposes, applicable for a single reference value a Voltage component of the measured quantity Rated voltage or any voltage within the reference range, if any 2%
41、 of the rated value Current component of the measured quantity 40% .100% of rated current Phase balance (for polyphase instruments) Symmetrical voltages and currents b Frequency of current and voltage components of the measured quantity Instruments using phase shifting devices Reference frequency 0.
42、1% of the reference frequency Other instruments 45Hz to65Hz 2% of the reference frequency a This tolerance applies when a single reference value is specified in this table or is marked by the manufacturer. For a reference range, no tolerance is allowed. b Each of the voltages (between any two lines
43、or between line and neutral) should not differ by more than1% from the average of the voltages (line-to-line or line-to-neutral) of the system. Each of the currents in the phases should not differ by more than1% from the average of the currents. The angles between each of the currents and the corres
44、ponding phase-to-neutral voltages should not differ by more than2 from the average of the angles.EN60051-5:1989 BSI 07-1999 5 5 Nominal range of use and variations 5.1 Nominal range of use See Part1 and Table II-5. 5.2 Limits of variations See Part1 and Table II-5. 5.3 Conditions for the determinati
45、on of variations See Part1. 6 Further electrical and mechanical requirements 6.1 Voltage tests, insulation tests and other safety requirements See Part1. 6.2 Damping The requirements of Part1 do not apply to phase meters, power factor meters and synchroscopes. 6.3 Self-heating See Part1. However, th
46、e requirements of Part1 do not apply to synchroscopes. 6.4 Permissible overloads 6.4.1 Continuous overload For the recommended test, see Part9, Sub-clause4.6. All phase meters and power factor meters, together with their non-interchangeable accessory(ies), if any, except for instruments fitted with
47、a non-locking switch, shall be subjected to a continuous overload of120% of the rated value for all current circuits simultaneously for a period of2h. After having cooled to the reference temperature, the instrument together with its non-inter-changeable accessory(ies), if any, shall comply with its
48、 accuracy requirements but without repeating the overload. The continuous overload test shall be carried out under reference conditions except for current. The requirement for continuous overload does not apply to synchroscopes. 6.4.2 Overloads of short duration For the recommended test, see Part9,
49、Sub-clause4.4. All phase meters, power factor meters and synchroscopes, together with their non-interchangeable accessory(ies), if any, shall be subjected to overloads of short duration. However, these requirements do not apply to instruments whose scale marks do not correspond directly to their electrical input quantities but not excluding instruments intended to be used with (an) instrument transformer(s). 6.4.2.1 The values of current and voltage for the overloads of short duration shall be the
