1、BRITISH STANDARD BS EN 60618:1999 Incorporating Amendment No.1 to BS5862:1980 and Amendment No.2 to BS5862:1980 (renumbers the BS as BSEN60618:1999) Inductive voltage dividers The European Standard EN60618:1997, with the incorporation of its amendment A2:1997, has the status of a BritishStandard ICS
2、 29.200BSEN60618:1999 This BritishStandard, having been prepared under the directionof the Power ElectricalEngineering StandardsCommittee, was published under the authority ofthe Executive Board and comes into effect on 29February1980 BSI03-2000 ISBN 0 580 11138 5 National foreword This BritishStand
3、ard is the English language version of EN60618:1997, including its amendment A2:1997. It is identical to IEC60618:1978, together with its Amendment1:1981 and Amendment2:1997. The UK participation in its preparation was entrusted to Technical Committee PEL/85, Measuring equipment for electrical and e
4、lectromagnetic quantities (formerly PEL/13), which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related internatio
5、nal and European developments and promulgate them in the UK A list of organizations represented on this committee can be obtained on request to its secretary. Textual note No abbreviation is specified in IEC61010-1, amendment2, for pollution degree. In the example in8.4 of this standard, the suggest
6、ed abbreviation “PD” has been used. Change of identifier Wherever BS5862:1980 appears in the page headings of this standard, it should be read as EN60618:1997. Cross references The BritishStandards which implement international or European publications referred to in this document may be found in th
7、e BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are re
8、sponsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pagesi andii, theEN title page, pages2 to18 and a back cover. This standard has been u
9、pdated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No. Date Comments 6891 May 1992 Change to subclause 8.3.3 10232 July1999 Renumbers BS 5862:1980 as BS EN 60618:1999.
10、 Other changes indicated by a sidelineBSEN60618:1999 BSI 03-2000 i Contents Page National foreword Inside front cover Foreword 2 Text of EN60618 5ii blankEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN60618 November1997 +A2 November1997 ICS29.200 Supersedes HD390 S2:1992 Descriptors: Laboratory
11、 inductive voltage dividers, definitions, requirements, symbols English version Inductive voltage dividers (includes amendment A2:1997) (IEC60618:1978+A1:1981 and A2:1997) Diviseurs de tension inductifs (inclut lamendement A2:1997) (CEI60618:1978+A1:1981 et A2:1997) Induktive Spannungsteiler (enthlt
12、 nderung A2:1997) (IEC60618:1978+A1:1981 und A2:1997) This European Standard and its amendment A2 were approved by CENELEC on1997-10-01. 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 nati
13、onal 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 i
14、n 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, Czech Republic, Denmark,
15、 Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnisch
16、e Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1997 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN60618:1997+A2:1997 EEN60618:1997 BSI 03-2000 2 Foreword The text of the International Standard IEC60618:1978 and
17、its amendment1:1981, prepared by IEC TC85, Measuring equipment for electromagnetic quantities, was approved by CENELEC as HD390 S2 on1979-06-26. This Harmonization Document was submitted to the formal vote for conversion into a European Standard and was approved by CENELEC as EN60618 on1997-10-01. T
18、he following date was fixed: Annexes designated “normative” are part of the body of the standard. In this standard, Annex ZA is normative Annex ZA has been added by CENELEC. Foreword to amendment A2:1997 The text of document85/164/FDIS, future amendment2 to IEC60618:1978, prepared by IECTC85, Measur
19、ing equipment for electromagnetic quantities, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as amendment A2 to EN60618:1997 on1997-10-01. The following dates were fixed: Contents Page Foreword 2 1 Scope 5 2 Terms and definitions 5 2.1 Inductive voltage divider 5 2.2 Tran
20、sfer ratio 5 2.3 Fiducial value 5 2.4 Transfer ratio error 5 2.5 Input impedance 6 2.6 Output impedance 6 2.7 Influence quantity 6 2.8 Variation 6 2.9 Reference conditions 6 2.10 Nominal range of use 6 2.11 Limiting values of an influence quantity 7 2.12 Circuit insulation voltage (nominal circuit v
21、oltage) 7 2.13 Common mode voltage 7 2.14 D.C. series mode input current 7 2.15 Distortion factor 7 2.16 Electrostatic screen 7 2.17 Leakage current screen 7 2.18 Resolution 7 2.19 Auxiliary equipment 7 2.20 Accuracy 7 3 Classification 8 4 Limits of intrinsic error 8 4.1 Permissible limits of intrin
22、sic error 8 4.2 Selectable ratios 8 5 Conditions for the determination of intrinsic errors 9 6 Permissible variations 10 6.1 Limits of variations 10 6.2 Conditions for the determination of the variations 10 6.3 Variation due to d.c. series mode current 10 6.4 Variation due to the influence of an ext
23、ernally produced magnetic field 10 7 Additional electrical and mechanical requirements 11 7.1 Limiting values of input voltage 11 7.2 Input voltage switching 11 7.3 Voltage test and other safety requirements 11 7.4 Insulation resistance test 11 latest date by which the ENhas to be implemented at nat
24、ional level by publication of an identical national standard or by endorsement (dop)1998-09-01 latest date by which the amendment has to be implemented at national level by publication of an identical national standard or by endorsement (dop)1998-09-01 latest date by which the national standards con
25、flicting with the amendment have to be withdrawn (dow)1998-09-01EN60618:1997 BSI 03-2000 3 Page 7.5 Limiting conditions for storage, transport and use 11 8 Information, markings and symbols 11 8.1 Information 11 8.2 Markings, symbols and their locations 12 8.3 Documentation 13 8.4 Example of the mar
26、king of an IVD 13 Appendix A Transfer ratio and other performance characteristics 15 Annex ZA (normative) Normative references tointernational publications with their corresponding European publications 18 Figure 1 Typical errors of an inductive voltagedivider 16 Figure 2 Input and output connection
27、s of aninductive voltage divider 17 Table I Limits of the modulus of the intrinsictransfer ratio error expressed as a proportion of thefiducial value 9 Table II Reference conditions and tolerancesofthe influence quantities 9 Table III Limits of the nominal range of useandpermissible variation 10 Tab
28、le IV Symbols for marking inductive voltagedividers 144 blankEN60618:1997 BSI 03-2000 5 1 Scope This standard applies to inductive voltage dividers which are designed to provide a number of accurate ratios of alternating voltage over a range of frequencies and are intended to be used with negligible
29、 burden on their output. NOTE 1Transformer devices intended to supply a burden for measurement purposes are covered by IEC Publication186, Voltage Transformers. NOTE 2In some multi-dial inductive voltage dividers, the setting circuit of the last (least significant) dial is resistive. This standard d
30、oes not apply to any auxiliary equipment used with inductive voltage dividers. 2 Terms and definitions For the purposes of this standard, the following definitions apply: 2.1 inductive voltage divider (for brevity, in this standard, referred to as “IVD”) a device comprising one transformer or more t
31、han one interconnected transformers which, by means of switches or otherwise, can be set to provide output voltages equal to a selected proportion of the input voltage NOTE 1Such IVDs include devices which are referred to as “precision autotransformers”, “decade transformer dividers”, “inductive div
32、iders” and “ratio transformers”. NOTE 2The main characteristics of IVDs are discussed in Appendix A. NOTE 3Some IVDs have a separate auxiliary winding (the magnetizing winding) which supplies the magnetization and losses of the magnetic core. Use of this winding greatly increases the input impedance
33、 of the measuring winding and reduces the errors of the IVD. These IVDs are called “2-stage IVDs”. 2.2 Transfer ratio The ratio of the complex value representing the open circuit output voltage (phasor) of an IVD to the complex value representing its input voltage (phasor). 2.2.1 nominal transfer ra
34、tio the ratio between the open circuit output voltage and the input voltage indicated either by the setting(s) of the switch(es) or by some other method of selecting the ratio NOTEThis ratio is a pure number obtained by reading the instrument dials or similar indication. 2.3 fiducial value a value t
35、o which reference is made in order to specify the accuracy of an IVD the fiducial value for an IVD is unity, i.e.the ratio which corresponds (or which would correspond) to an open circuit output voltage equal to the input voltage 2.4 Transfer ratio error the value obtained by subtracting the true va
36、lue of the transfer ratio from the value of the nominal transfer ratio. NOTE 1When the transfer ratio error is expressed as a proportion of the fiducial value, its numerical value remains unchanged, as the fiducial value is a ratio of unity. NOTE 2Although the transfer ratio error (e) is complex, co
37、ntaining both an in-phase (e p ) and a quadrature (e q ) component, for the purpose of this standard, only the modulus of this complex quantity is used. The modulus of the transfer ratio error is expressed mathematically by: (seeAppendix A. ClauseA.7). NOTE 3The modulus of the transfer ratio error i
38、s expressed in per cent(%), in parts per million (ppm) or in proportional parts using scientific notation, of the fiducial value (seeClause3 and Table I). 2.4.1 intrinsic transfer ratio error transfer ratio error determined under reference conditions e e p 2 e q 2 + =EN60618:1997 6 BSI 03-2000 2.5 I
39、nput impedance 2.5.1 input impedance of the measuring winding under specified conditions, the impedance presented to the source by an IVD when its output terminals are open circuited. For an IVD with a separate magnetizing winding(“2 stage”), this is the impedance at the measuring input terminals wh
40、en the magnetizing winding is energized by a voltage of the same amplitude and phase as the voltage at the measuring input terminals NOTEThe impedance of the magnetizing winding is not part of the input impedance of the measuring winding. 2.5.2 input impedance of the magnetizing winding under specif
41、ied conditions, the impedance presented to the source by the magnetizing winding of a2-stage IVD when the measuring winding is energized by a voltage having the same amplitude and phase as the voltage at the magnetizing winding terminals NOTEThe impedance of the measuring winding is not part of the
42、input impedance of the magnetizing winding. 2.6 Output impedance Under specified conditions, the impedance presented to any load by an IVD when its input terminals are connected together by a link of negligible impedance. 2.6.1 maximum output resistance the highest value of the resistive component o
43、f the output impedance at any setting of the switch(es) or other ratio adjusting arrangement 2.6.2 maximum output inductance the inductance which, at a particular frequency, produces the highest value of the reactive component of the output impedance at any setting of the switch(es) or other ratio a
44、djusting arrangement 2.7 influence quantity a quantity which is liable to cause unwanted variation in the transfer ratio of an IVD NOTEGenerally, it covers such quantities as input voltage and frequency, ambient temperature and humidity. These quantities will have reference ranges and nominal ranges
45、 of use, which are given in the appropriate tables. 2.8 variation the difference between the true values of the transfer ratio when an influence quantity assumes successively two different specified values, all other influence quantities remaining within their reference conditions 2.9 Reference cond
46、itions The specified conditions under which the IVD is intended to comply with the requirements concerning intrinsic transfer ratio errors. These conditions may have either of the following: 2.9.1 reference value a specified single value of an influence quantity at which, within the stated tolerance
47、, the IVD is intended to comply with the requirements concerning intrinsic transfer ratio errors 2.9.2 reference range a specified range of values of an influence quantity within which the IVD is intended to comply with the requirements concerning intrinsic transfer ratio errors 2.10 nominal range o
48、f use a specified range of values which each influence quantity can assume without causing a variation exceeding the specified limitsEN60618:1997 BSI 03-2000 7 2.11 limiting values of an influence quantity extreme values which an influence quantity may assume without the IVD being damaged or permane
49、ntly altered in such a way that it no longer satisfies the requirements of its accuracy class 2.12 circuit insulation voltage (nominal circuit voltage) the highest voltage with respect to earth which may be applied to any circuit of an IVD so that the IVD is unlikely to become dangerous to touch 2.13 common mode voltage any voltage which exists between the common input-output terminal(s) and the earth terminal, the leakage current screen terminal or the electrostatic screen terminal (if any), separately or collectively (as specified) NOTEWhen th
