1、BRITISH STANDARD BS EN 60444-7:2004 Measurement of quartz crystal unit parameters Part 7: Measurement of activity and frequency dips of quartz crystal units The European Standard EN 60444-7:2004 has the status of a British Standard ICS 31.140 BS EN 60444-7:2004 This British Standard was published un
2、der the authority of the Standards Policy and Strategy Committee on 3 September 2004 BSI 3 September 2004 ISBN 0 580 44394 9 National foreword This British Standard is the official English language version of EN 60444-7:2004. It is identical with IEC 60444-7:2004. The UK participation in its prepara
3、tion was entrusted to Technical Committee EPL/49, Piezo-electric devices for frequency control and selection, which has the responsibility to: A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement int
4、ernational or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Search” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not pu
5、rport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. aid enquirers to understand the text; present to the responsible international/European commit
6、tee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. Summary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 69
7、 and a back cover. The BSI copyright notice displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date CommentsEUROPEAN STANDARD EN 60444-7 NORME EUROPENNE EUROPISCHE NORM June 2004 CENELEC European Committee for Electrotechnical Standar
8、dization Comit Europen de Normalisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B - 1050 Brussels 2004 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. EN 60444-7:2004
9、 E ICS 31.140 English version Measurement of quartz crystal unit parameters Part 7: Measurement of activity and frequency dips of quartz crystal units (IEC 60444-7:2004) Mesure des paramtres des rsonateurs quartz Partie 7: Mesure des crevasses de lactivit et de la frquence des rsonateurs quartz (CEI
10、 60444-7:2004) Messung von Schwingquarz-Parametern Teil 7: Messung von Aktivitts- und Frequenz-Dips von Schwingquarzen (IEC 60444-7:2004) This European Standard was approved by CENELEC on 2004-06-01. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the co
11、nditions 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 CENELEC member. This European Standard exists in
12、 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. CENELEC members are the national electrotec
13、hnical committees of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. Forewor
14、d The text of document 49/637/FDIS, future edition 1 of IEC 60444-7, prepared by IEC TC 49, Piezoelectric and dielectric devices for frequency control and selection, was submitted to the IEC-CENELEC parallel vote and was approved by CENELEC as EN 60444-7 on 2004-06-01. The following dates were fixed
15、: latest date by which the EN has to be implemented at national level by publication of an identical national standard or by endorsement (dop) 2005-03-01 latest date by which the national standards conflicting with the EN have to be withdrawn (dow) 2007-06-01 _ Endorsement notice The text of the Int
16、ernational Standard IEC 60444-7:2004 was approved by CENELEC as a European Standard without any modification. _ Page2 EN604447:2004CONTENTS Page Clause 1 General5 1.1 Scope5 1.2 Normative references5 1.3 General block diagram of electronic voltage transformers7 2 Definitions8 2.1 General definitions
17、8 2.2 Additional definitions for single-phase electronic protective voltage transformers14 2.3 Index of symbols.14 3 General requirements.15 3.1 General.15 3.2 Information to be given for enquiries, tenders and orders. .16 4 Normal and special service conditions16 4.1 Normal service conditions .16 4
18、.2 Special service conditions .18 4.3 Earthing system19 5 Ratings.19 5.1 Standard values of rated voltages .19 5.2 Standard values of rated output.20 5.3 Standard values of rated voltage factor .20 5.4 Standard values of rated auxiliary power supply voltage21 5.5 Standard reference values of other i
19、nfluencing parameters .21 6 Design requirements22 6.1 Insulation requirements for primary voltage sensor22 6.2 Insulation requirements for low-voltage components26 6.3 Short-circuit withstand capability.27 6.4 Limits of temperature rise27 6.5 Radio interference voltage requirements .27 6.6 Transmitt
20、ed overvoltage requirements.28 6.7 Electromagnetic compatibility requirements.28 6.8 Reliability30 6.9 Abnormal conditions withstand capability 31 6.10 Abnormal conditions signalling 31 6.11 Mechanical requirements.31 6.12 Earthing terminals.32 7 Classification of tests.32 7.1 Type tests.32 7.2 Rout
21、ine tests.33 7.3 Special tests .33 Page3 EN604447:2004Clause Page 8 Type tests33 8.1 Impulse test on primary voltage terminals33 8.2 Wet test for outdoor type electronic voltage transformers 35 8.3 Tests for accuracy.35 8.4 Test for abnormal conditions withstand capability36 8.5 Radio interference v
22、oltage test37 8.6 Transmitted overvoltage test .37 8.7 Electromagnetic compatibility tests37 8.8 Impulse voltage withstand test for low-voltage components .40 8.9 Transient performance tests41 9 Routine tests41 9.1 Verification of terminal markings .41 9.2 Power-frequency withstand tests on primary
23、voltage terminals and partial discharge measurement.41 9.3 Power-frequency voltage withstand test for low-voltage components.43 9.4 Tests for accuracy.44 10 Special tests.44 10.1 Chopped lightning-impulse test on primary voltage terminals.44 10.2 Measurement of capacitance and dielectric dissipation
24、 factor45 10.3 Mechanical strength tests45 11 Markings46 11.1 Rating plate markings46 11.2 Terminal markings.48 12 Accuracy requirements for single-phase electronic measuring voltage transformers .48 12.1 General requirements48 12.2 Maintenance requirement 49 12.3 Accuracy class designation for elec
25、tronic measuring voltage transformers 49 12.4 Standard accuracy classes for electronic measuring voltage transformers.49 12.5 Limits of voltage error and phase displacement for electronic measuring voltage transformers50 13 Additional requirements for single-phase electronic protective voltage trans
26、formers.50 13.1 General requirements50 13.2 Maintenance requirements 51 13.3 Accuracy class designation for electronic protective voltage transformers .51 13.4 Standard accuracy classes for electronic protective voltage transformers51 13.5 Limits of voltage error and phase displacement for electroni
27、c protective voltage transformers51 13.6 Transient performance requirements .52 Annex A (normative) Burdens for the transient response test53 Annex B (informative) Technical information for electronic voltage transformers .55 Annex C (informative) Bibliography.69 Page4 EN604447:2004INSTRUMENT TRANSF
28、ORMERS Part 7: Electronic voltage transformers 1 General 1.1 Scope This part of International Standard IEC 60044 applies to newly manufactured electronic voltage transformers with analogue output, for use with electrical measuring instruments and electrical protective devices at frequencies from 15
29、Hz to 100 Hz. NOTE 1 Optical arrangements usually include electronic components and are therefore considered to be within the application of this standard. NOTE 2 Detailed information is given in annex B. NOTE 3 Requirements specific to three-phase voltage transformers are not included in this stand
30、ard but, so far as they are relevant, the requirements in clauses 3 to 11 apply to these transformers and a few references to them are included in those clauses (e.g. see 2.1.5, 5.1.1, 5.2, 11.2.1 and 11.2.2). 1.2 Normative references The following normative documents contain provisions which, throu
31、gh reference in this text, constitute provisions of this part of IEC 60044. For dated references, subsequent amend- ments to, or revisions of, any of these publications do not apply. However, parties to agreements based on this part of IEC 60044 are encouraged to investigate the possibility of apply
32、ing the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies. Members of IEC and ISO maintain registers of currently valid International Standards. IEC 60038:1983, IEC standard voltages IEC 60044-2:1
33、997, Instrument transformers Part 2: Inductive voltage transformers IEC 60050(161):1990, International Electrotechnical Vocabulary (IEV) Chapter 161: Electromagnetic compatibility IEC 60050(321):1986, International Electrotechnical Vocabulary (IEV) Chapter 321: Instrument transformers IEC 60050(601)
34、:1985, International Electrotechnical Vocabulary (IEV) Chapter 601: Generation, transmission and distribution of electricity General IEC 60050(604):1987, International Electrotechnical Vocabulary (IEV) Chapter 604: Generation, transmission and distribution of electricity Operation IEC 60060 (all par
35、ts), High-voltage techniques IEC 60060-1:1989, High-voltage test techniques Part 1: General definitions and test requirements IEC 60071-1:1993, Insulation co-ordination Part 1: Definitions, principles and rules Page5 EN604447:2004IEC 60186:1987, Voltage transformers IEC 60255-5:1977, Electrical rela
36、ys Part 5: Insulation tests for electrical relays IEC 60255-6:1988, Electrical relays Part 6: Measuring relays and protection equipment IEC 60255-11:1979, Electrical relays Part 11: Interruptions to and alternating component (ripple) in d.c. auxiliary energizing quantity of measuring relays IEC 6025
37、5-22-1:1988, Electrical relays Part 22: Electrical disturbance tests for measuring relays and protection equipment Section 1: 1 MHz burst disturbance tests IEC 60270:1981, Partial discharges measurements IEC 60617-1:1985, Graphical symbols for diagrams Part 1: General information, general index. Cro
38、ss-reference tables IEC 60694:1996, Common specifications for high-voltage switchgear and controlgear standards IEC 60721 (all parts), Classification of environmental conditions IEC 60815:1986, Guide for the selection of insulators in respect of polluted conditions IEC 61000 (all parts), Electromagn
39、etic compatibility (EMC) IEC 61000-4-1:1992, Electromagnetic compatibility (EMC) Part 4: Testing and measurement techniques Section 1: Overview of immunity test. Basic EMC publication IEC 61000-4-2:1995, Electromagnetic compatibility (EMC) Part 4: Testing and measurement techniques Section 2: Electr
40、ostatic discharge immunity test. Basic EMC publication IEC 61000-4-3:1995, Electromagnetic compatibility (EMC) Part 4: Testing and measurement techniques Section 3: Radiated, radio-frequency, electromagnetic immunity test IEC 61000-4-4:1995, Electromagnetic compatibility (EMC) Part 4: Testing and me
41、asurement techniques Section 4: Electrical fast transient/burst immunity test. Basic EMC publication IEC 61000-4-5:1995, Electromagnetic compatibility (EMC) Part 4: Testing and measurement techniques Section 5: Surge immunity test IEC 61000-4-8:1993, Electromagnetic compatibility (EMC) Part 4: Testi
42、ng and measurement techniques Section 8: Power frequency magnetic field immunity test. Basic EMC publication IEC 61000-4-9:1993, Electromagnetic compatibility (EMC) Part 4: Testing and measurement techniques Section 9: Pulse magnetic field immunity test. Basic EMC publication IEC 61000-4-10:1993, El
43、ectromagnetic compatibility (EMC) Part 4: Testing and measurement techniques Section 10: Damped oscillatory magnetic field immunity test. Basic EMC publication Page6 EN604447:2004IEC 61000-4-11:1994, Electromagnetic compatibility (EMC) Part 4: Testing and measurement techniques Section 11: Voltage d
44、ips, short interruption and voltage variation immunity test IEC 61000-4-12:1995, Electromagnetic compatibility (EMC) Part 4: Testing and measurement techniques Section 12: Oscillatory waves immunity tests. Basic EMC publication CISPR 11 (EN 55011), Industrial, scientific and medical (ISM) radio-freq
45、uency equipment Electromagnetic disturbance characteristics Limits and methods of measurement EN 50081-2:1993, Electromagnetic compatibility Generic immunity standard Part 2: Industrial environment 1.3 General block diagram of electronic voltage transformers The applied technology decides which part
46、s are necessary for realisation of an electronic voltage transformer, i.e. it is not absolutely essential that all parts described be in the transformer (see figures 1 and 2). Transmitting system Secondary voltage terminals Secondary converter Secondary power supply a n A Primary voltage sensor Prim
47、ary converter Primary power supply N Primary voltage terminals IEC 1192/99Figure 1 General block diagram of earthed single-phase electronic voltage transformers Secondary voltage terminals Secondary power supply Transmitting system Primary power supply Primary voltage terminals Primary converter C P
48、rimary voltage sensor N B Primary voltage sensor N A Primary voltage sensor N Secondary converter c n b n a n IEC 1193/99Figure 2 General block diagram of earthed three-phase electronic voltage transformers Page7 EN604447:20042 Definitions For the purpose of this part of IEC 60044, the following def
49、initions apply. 2.1 General definitions 2.1.1 electronic instrument transformer an arrangement consisting of one or more current or voltage sensors which may be connected to a transmitting system and a secondary converter, all intended to transmit a measuring quantity in a proportional quantity to supply measuring instruments, meters and protective or control devices 2.1.2 e
