1、BRITISH STANDARD BS EN 61166:1993 IEC 1166:1993 Specification for High-voltage alternating current circuit-breakers Guide for seismic qualification of high-voltage alternating current circuit-breakers The European Standard EN61166:1993 has the status of a British Standard UDC 621.316.57BSEN61166:199
2、3 This British Standard, having been prepared under the directionof the Power ElectricalEngineering StandardsPolicy Committee,waspublished underthe authorityof the Standards Boardand comesintoeffect on 15October1993 BSI 12-1999 The following BSI references relate to the work on this standard: Commit
3、tee reference PEL/92 Draft for comment90/20201DC ISBN0580225607 Cooperating organizations The European Committee for Electrotechnical Standardization (CENELEC), under whose supervision this European Standard was prepared, comprises the national committees of the following countries: Austria Italy Be
4、lgium Luxembourg Denmark Netherlands Finland Norway France Portugal Germany Spain Greece Sweden Iceland Switzerland Ireland United Kingdom Amendments issued since publication Amd. No. Date CommentsBSEN61166:1993 BSI 12-1999 i Contents Page Cooperating organizations Inside front cover National forewo
5、rd ii Foreword 2 Text of EN 61166 3 National annex NA (informative) Committees responsible Inside back cover National annex NB (informative) Cross-references Inside back coverBSEN61166:1993 ii BSI 12-1999 National foreword This British Standard has been prepared under the direction of the Power Elec
6、trical Engineering Standards Policy Committee and is the English language version of EN61166:1993 High-voltage alternating current circuit-breakers. Guide for seismic qualification of high-voltage alternating current circuit-breakers, published by the European Committee for Electrotechnical Standard
7、ization (CENELEC). It is identical with IEC1166:1993, published by the International Electrotechnical Commission (IEC). A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with
8、 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, pages i and ii, theEN title page, pages 2 to 14, an inside back cover and a back cover. This standard has been updated (see copyright date) an
9、d may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 61166 July 1993 UDC 621.316.57 Descriptors: Seismic qualification, high voltage circuit-breakers English version High-voltage alternati
10、ng current circuit-breakers Guide for seismic qualification of high-voltage alternating current circuit-breakers (IEC 1166:1993) Disjoncteurs courant alternatif haute tension Guide pour la qualification sismique des disjoncteurs courant alternatif haute tension (CEI1166:1993) Hochspannungs-Wechselst
11、rom- Leistungsschalter Leitfaden fr die Erdbeben-Qualifikation von Hochspannungs-Wechselstrom- Leistungsschaltern (IEC1166:1993) This European Standard was approved by CENELEC on1993-07-06. CENELEC members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions f
12、or 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 three off
13、icial 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 electrotechnical com
14、mittees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Normalisation Electrotechnique E
15、uropisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1993 Copyright reserved to CENELEC members Ref. No. EN61166:1993EEN61166:1993 BSI 12-1999 2 Foreword The text of document17A(CO)236 as prepared by sub-committee17A: High voltage switchgear and co
16、ntrolgear, of IEC technical committee17: Switchgear and controlgear, was submitted to the IEC-CENELEC parallel vote in May1992. The reference document was approved by CENELEC as EN61166 on6July1993. The following dates were fixed: Annexes designate “normative” are part of the body of the standard. I
17、n this standard,Annex A andAnnex ZA are normative. Contents Page Foreword 2 1 Scope and object 3 2 Normative references 3 3 Definitions 3 4 Seismic qualification requirements 3 5 Severities 3 6 Qualification by test 4 6.1 Introduction 4 6.2 Mounting 4 6.3 External load 4 6.4 Measurements 4 6.5 Frequ
18、ency range 4 6.6 Test severity 4 6.6.1 Parameters for sine-beat excitation 4 6.6.2 Parameters for time-history excitation 4 6.7 Testing 4 6.7.1 Test directions 4 6.7.2 Test sequence 4 7 Qualification by combined test and analysis 5 7.1 Introduction 5 7.2 Vibrational and functional data 5 7.3 Analysi
19、s 5 7.3.1 Acceleration time-history method of calculation 5 Page 7.3.2 Modal analysis using the required response spectrum (RRS) 6 7.3.3 Static coefficient analysis 6 8 Evaluation of the seismic qualification 6 8.1 Combination of stresses 6 8.2 Acceptance criteria of the seismic simulation 6 8.3 Fun
20、ctional evaluation of the test results 6 9 Documentation 7 9.1 Information for seismic qualification 7 9.2 Test report 7 9.3 Analysis report 7 Annex A (normative) Characterization of the equipment 13 Annex ZA (normative) Other international publications quoted in this standard with thereferences of
21、the relevant European publications 14 Figure 1 RRS for ground mounted equipment Qualification level: AF5: ZPA =5m/s 2(0,5g) 8 Figure 2 RRS for ground mounted equipment Qualification level: AF3: ZPA=3m/s 2(0,3g) 9 Figure 3 RRS for ground mounted equipment Qualification level AF2: ZPA=2m/s 2(0,2g) 10
22、Figure 4 Example for combination of stresses 11 Figure 5 Graph for determining the damping ratio 12 Table 1 Seismic qualification levels horizontal severities 3 latest date of publication ofan identical national standard (dop) 1994-07-01 latest date of withdrawal ofconflicting national standards (do
23、w) 1994-07-01EN61166:1993 BSI 12-1999 3 1 Scope and object This International Standard applies only to ground mounted high-voltage (HV) circuit-breakers, the supporting structures of which are rigidly connected with the ground, and does not cover the seismic qualification of circuit-breakers in meta
24、l enclosed switchgear. The seismic qualification of the HV circuit-breakers shall take into account any auxiliary and control equipment which is mounted on the circuit-breaker structure. If the auxiliary and control equipment is mounted on a separate structure, it may be qualified independently. Thi
25、s standard is a guide providing procedures to seismically qualify HV alternating-current ground mounted circuit-breakers. It is mainly based on IEC68-3-3, which in turn refers to IEC68-1, IEC68-2-6, IEC68-2-47 and IEC68-2-57. The seismic qualification of a circuit-breaker is only performed upon requ
26、est. This standard specifies seismic severity levels and gives a choice of methods that can be applied to demonstrate the performance of HV circuit-breakers for which seismic qualification is required. 2 Normative references The following normative documents contain provisions which, through referen
27、ce in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All normative documents are subject to revision, and parties to agreements based on this International Standard are encouraged to investigate the possibility of apply
28、ing the most recent editions of the normative documents indicated below. Members of IEC and ISO maintain registers of currently valid International Standards. IEC 50(441):1984, International Electrotechnical Vocabulary (IEV), Chapter441: Switchgear, controlgear and fuses. IEC 56:1987, High-voltage a
29、lternating-current circuit-breakers. IEC 68-1:1988, Environmental testing Part1: General and guidance. IEC 68-2-6:1982, Environmental testing Part2: Tests Test Fc and guidance: Vibration (sinusoidal). IEC 68-2-47:1982, Environmental testing Part2: Tests Mounting of components, equipment and other ar
30、ticles for dynamic tests including shock(Ea), bump (Eb), vibration (Fc and Fd) and steady-state acceleration (Ga) and guidance. IEC 68-2-57:1989, Environmental testing Part2: Tests Test Ff. Vibration Time history method. IEC 68-3-3:1991, Environmental testing Part3: Background information. Seismic t
31、est methods for equipment. 3 Definitions For definition of the terms used in this International Standard refer to IEC68-3-3. 4 Seismic qualification requirements The seismic qualification should demonstrate the circuit-breakers ability to withstand seismic stress and to maintain its specified functi
32、on, both during and after the seismic event. The most commonly used methods are: a) qualification by test; b) qualification by combined test and analysis. NOTEQualification by pure analysis is acceptable if sufficient information on physical parameters (e.g. damping coefficient) and on the functiona
33、l behaviour of the circuit-breaker is available. 5 Severities The severity levels shall be chosen fromTable 1. Table 1 Seismic qualification levels horizontal severities For vertical severities the direction factor (D) is0,5 (see IEC68-3-3). NOTE 1The required response spectrum of qualification leve
34、lAF5 covers, in the range of predominant seismic frequency of1Hz to35Hz, the following response spectra: Endesa, Edelca, USA/NRC RG1.60, Newmark Design Response Spectra (scaled to5m/s 2 ), Nema (5m/s 2 max. foundation acceleration), Dept. of Water this temperature shall be recorded in the test repor
35、t. The qualification shall be carried out: on a complete circuit-breaker when all poles are mounted on the same supporting structure; on one pole in the case of a circuit-breaker with three separate poles; on one column with its interrupters in the case of multibreak poles on separate supporting str
36、uctures. NOTEIf a circuit-breaker cannot be tested with its supporting structure (e.g., due to its size), the dynamic contribution of the structure should be determined by analysis. The circuit-breaker shall be tested in the closed position except when the open position has been shown to be more cri
37、tical during the vibration response investigation. 6.2 Mounting General mounting requirements are given in IEC68-2-47. The circuit-breaker shall be mounted as in service including dampers (if any). NOTEFor more detailed guidance in case of equipment normally used with vibration isolators (seeA.5, IE
38、C68-2-6). The horizontal orientation of the circuit-breaker should be in the direction of excitation acting along its two main orthogonal axes. Any fixtures or connections required only for testing should not affect the dynamic behaviour of the circuit-breaker. The method of mounting of the circuit-
39、breaker shall be documented and shall include a description of any interposing fixtures and connections. 6.3 External load Generally, electrical and environmental service loads cannot be simulated during the seismic test. This applies also to internal pressure of the circuit-breaker due to safety re
40、quirements of the test laboratory. NOTEFor combination of seismic and service loads, seeclause8. The circuit-breaker shall not be operated during the seismic tests; the control and auxiliary circuits shall be energized to monitor any chattering of relays, but they need not cause the circuit-breaker
41、to operate. 6.4 Measurements Measurements should be performed in accordance with5.2 of IEC68-3-3, and should include: vibration motion of the center of gravity (when applicable); strains on critical elements (e.g. porcelains). 6.5 Frequency range The frequency range shall be0,5Hz to35Hz. 6.6 Test se
42、verity The test severity shall be chosen in accordance with clause5. The recommended required response spectra are given inFigure 1 toFigure 3 for the different seismic qualification levels. The curves relate to2%,5%,10% and20% or more damping ratio of the circuit-breaker. Spectra for different damp
43、ing values can be obtained by linear interpolation. The time-history test method is to be preferred, since it more closely simulates actual conditions, particularly if the behaviour of the circuit-breaker under test is not linear. The test method should be in accordance with IEC68-2-57. 6.6.1 Parame
44、ters for sine-beat excitation Test frequencies shall cover the frequency range stated in6.5 with1/2 octave spacing. For each test frequency five sine-beats of five cycles each are applied. 6.6.2 Parameters for time-history excitation The total duration of the time-history shall be about30s of which
45、the strong part shall be not less than6s. 6.7 Testing 6.7.1 Test directions The test directions should be chosen according to3.19 of IEC68-3-3. In some cases the effect of the vertical acceleration results in negligible stresses and the vertical excitation may be omitted. 6.7.2 Test sequence The tes
46、t sequence shall be as follows: functional checks before testing; vibration response investigation (required to determine damping and/or for analysis); seismic qualification test, and functional checks after testing.EN61166:1993 BSI 12-1999 5 6.7.2.1 Functional checks Before and after the tests the
47、following operating characteristics or settings shall be recorded or evaluated (when applicable) at the rated supply voltage and operating pressure: a) closing time; b) opening time; c) time spread between units of one pole; d) time spread between poles (if multipole tested); e) gas and/or liquid ti
48、ghtness; f) other important characteristics or settings as specified by the manufacturer. 6.7.2.2 Vibration response investigation The vibration response investigation shall be carried out according to10.1 and14.2 of IEC68-3-3 over the frequency range stated in6.5. 6.7.2.3 Seismic qualification test
49、 The test shall be performed by applying one of the procedures stated in flow chart A3 (except test Fc) or flow chart A4 of AnnexA of IEC68-3-3 depending on the test facilities. The test shall be performed once at the level chosen in clause5. During the seismic test the following parameters shall be recorded: strain of critical components such as post insulators and support structure; deflection at terminal; electrical continuity of the main circuit; electrical continuity of the auxiliary a
