prEN IEC 62271-207:2022

High-voltage switchgear and controlgear - Part 207: Seismic qualification for gas-insulated switchgear assemblies, metal enclosed and solid-insulation enclosed switchgear for rated voltages above 1 kV

20211005 - As decision 13 of 17C/823/RM, the 17C/818/CDV of IEC 62271-207 Ed.3 will be withdrawn from the circulation.
Withdrawal of 17C/818/CDV (Circulation date: 2021-11-12).

Hochspannungs-Schaltgeräte und -Schaltanlagen – Teil 207: Erdbebenqualifikation für gasisolierte Schaltgerätekombinationen, metallgekapselte und isolierstoffgekapselte Schaltanlagen mit Bemessungsspannungen über 1 kV

Appareillage à haute tension - Partie 207: Qualification sismique pour les ensembles d'appareillage de commutation à isolation gazeuse, à enveloppe métallique et à isolation solide pour des tensions nominales supérieures à 1 kV

Visokonapetostne stikalne in krmilne naprave - 207. del: Seizmična (potresna) kvalifikacija plinsko izoliranih stikalnih sestavov v kovinskih ohišjih in stikalnih sestavov v ohišjih iz trdnih izolacijskih materialov za naznačene napetosti nad 1 kV

General Information

• Status: Not Published
• Publication Date: 16-Oct-2023
• ICS: 29.130.10 - High voltage switchgear and controlgear
• Technical Committee: CLC/TC 17AC - High-voltage switchgear and controlgear
• Drafting Committee: IEC/SC 17C - IEC_SC_17C
• Current Stage: 4060 - Enquiry results established and sent to TC, SR, BTTF - Enquiry
• Start Date: 17-Jun-2022
• Completion Date: 17-Jun-2022
• Ref Project: oSIST prEN IEC 62271-207:2022 - High-voltage switchgear and controlgear - Part 207: Seismic qualification for gas-insulated switchgear assemblies, metal enclosed and solid-insulation enclosed switchgear for rated voltages above 1 kV

Relations

• Revises: EN 62271-207:2012 - High-voltage switchgear and controlgear - Part 207: Seismic qualification for gas-insulated switchgear assemblies for rated voltages above 52 kV
• Effective Date: 19-Jan-2021

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN IEC 62271-207:2022
01-junij-2022
Visokonapetostne stikalne in krmilne naprave - 207. del: Seizmična (potresna)

kvalifikacija plinsko izoliranih stikalnih sestavov v kovinskih ohišjih in stikalnih

sestavov v ohišjih iz trdnih izolacijskih materialov za naznačene napetosti nad 1

High-voltage switchgear and controlgear - Part 207: Seismic qualification for gas-

insulated switchgear assemblies, metal enclosed and solid-insulation enclosed
switchgear for rated voltages above 1 kV

Appareillage à haute tension - Partie 207: Qualification sismique pour les ensembles

d'appareillage de commutation à isolation gazeuse, à enveloppe métallique et à isolation

solide pour des tensions nominales supérieures à 1 kV
Ta slovenski standard je istoveten z: prEN IEC 62271-207:2022
ICS:
29.130.10 Visokonapetostne stikalne in High voltage switchgear and
krmilne naprave controlgear
oSIST prEN IEC 62271-207:2022 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN IEC 62271-207:2022
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oSIST prEN IEC 62271-207:2022
17C/838/CDV
COMMITTEE DRAFT FOR VOTE (CDV)
PROJECT NUMBER:
IEC 62271-207 ED3
DATE OF CIRCULATION: CLOSING DATE FOR VOTING:
2022-03-25 2022-06-17
SUPERSEDES DOCUMENTS:
17C/769/CD, 17C/796/CC
IEC SC 17C : ASSEMBLIES
SECRETARIAT: SECRETARY:
Germany Mr Mark Kuschel
OF INTEREST TO THE FOLLOWING COMMITTEES: PROPOSED HORIZONTAL STANDARD:
TC 17,SC 17A
Other TC/SCs are requested to indicate their interest, if
any, in this CDV to the secretary.
FUNCTIONS CONCERNED:
EMC ENVIRONMENT QUALITY ASSURANCE SAFETY

SUBMITTED FOR CENELEC PARALLEL VOTING NOT SUBMITTED FOR CENELEC PARALLEL VOTING

Attention IEC-CENELEC parallel voting
The attention of IEC National Committees, members of
CENELEC, is drawn to the fact that this Committee Draft
for Vote (CDV) is submitted for parallel voting.
The CENELEC members are invited to vote through the
CENELEC online voting system.

This document is still under study and subject to change. It should not be used for reference purposes.

Recipients of this document are invited to submit, with their comments, notification of any relevant patent rights of

which they are aware and to provide supporting documentation.
TITLE:

High-voltage switchgear and controlgear - Part 207: Seismic qualification for gas-insulated

switchgear assemblies, metal enclosed and solid-insulation enclosed switchgear for rated

voltages above 1 kV
PROPOSED STABILITY DATE: 2031
NOTE FROM TC/SC OFFICERS:
CDV based on 17C_837e_RQ .

Copyright © 2022 International Electrotechnical Commission, IEC. All rights reserved. It is permitted to download this

electronic file, to make a copy and to print out the content for the sole purpose of preparing National Committee positions.

You may not copy or "mirror" the file or printed version of the document, or any part of it, for any other purpose without

permission in writing from IEC.
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oSIST prEN IEC 62271-207:2022
IEC CDV 62271-207 © IEC 2022 2 17C/838/CDV
1 CONTENTS

3 FOREWORD ........................................................................................................................... 4

4 1 Scope .............................................................................................................................. 6

5 2 Normative references ...................................................................................................... 6

6 3 Terms and definitions ...................................................................................................... 7

7 4 Seismic qualification requirements................................................................................. 10

8 4.1 Seismic qualification objective .............................................................................. 10

9 4.2 Qualification levels ................................................................................................ 10

10 4.3 Selection of seismic qualification level .................................................................. 13

11 4.3.1 General ......................................................................................................... 13

12 4.3.2 Estimation of site-specific seismic hazard level .............................................. 13

13 4.3.3 Effect of building response and elevation ....................................................... 14

14 4.3.4 Soil-structure interaction ................................................................................ 14

15 5 Qualification by test ....................................................................................................... 14

16 5.1 General ................................................................................................................. 14

17 5.2 Mounting ............................................................................................................... 15

18 5.3 Test parameters .................................................................................................... 15

19 5.3.1 Measurements ............................................................................................... 15

20 5.3.2 Frequency range ........................................................................................... 15

21 5.3.3 Parameters for resonant frequency search .................................................... 15

22 5.3.4 Parameters for time history test (seismic load test) ........................................ 16

23 5.4 Testing procedure ................................................................................................. 16

24 5.4.1 General ......................................................................................................... 16

25 5.4.2 Inspection and functional checks ................................................................... 16

26 5.4.3 Resonant frequency search ........................................................................... 17

27 5.4.4 Time history test (seismic load test) ............................................................... 17

28 6 Qualification by combined test and numerical analysis .................................................. 17

29 6.1 General ................................................................................................................. 17

30 6.2 Dynamic and functional data ................................................................................. 18

31 6.3 Numerical analysis ................................................................................................ 18

32 6.3.1 General ......................................................................................................... 18

33 6.3.2 Analytical earthquake component combination techniques ............................. 19

34 6.3.3 Static analysis for rigid equipment ................................................................. 19

35 6.3.4 Static coefficient analysis .............................................................................. 19

36 6.3.5 Dynamic response spectrum analysis ............................................................ 20

37 6.3.6 Time history analysis ..................................................................................... 20

38 6.4 Analysis by experience or similarity ...................................................................... 21

39 7 Evaluation of the seismic qualification ........................................................................... 21

40 7.1 Combination of loads and stresses ....................................................................... 21

41 7.2 Validity criteria for the seismic waveform and the seismic test .............................. 22

42 7.3 Structural and Functional evaluation of the test results ......................................... 22

43 7.3.1 Common criteria for HV Switchgear and MV Switchgear ................................ 22

44 7.3.2 HV Switchgear ............................................................................................... 22

45 7.3.3 MV Switchgear .............................................................................................. 22

46 7.4 Allowable stresses ................................................................................................ 23

47 7.5 Criteria of model acceptance ................................................................................ 23

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48 7.6 Acceptance criteria of the analysis results by similarity ......................................... 23

49 8 Documentation .............................................................................................................. 23

50 8.1 Test report ............................................................................................................ 23

51 8.2 Analysis report ...................................................................................................... 24

52 8.3 Analysis report when analysis is performed by similarity ....................................... 25

53 Annex A (normative) Characterisation of the test-set ........................................................... 27

54 A.1 Low-level excitation .............................................................................................. 27

55 A.1.1 General ......................................................................................................... 27

56 A.1.2 Test method .................................................................................................. 27

57 A.1.3 Analysis ......................................................................................................... 27

58 A.2 Determination of the damping ratio by testing ....................................................... 27

59 A.2.1 Determination of the damping ratio by free oscillation test ............................. 27

60 A.2.1.1 Determination of the damping ratio by the logarithmic decrement

61 method .......................................................................................................... 27

62 A.2.1.2 Special cases regarding the determination of natural frequencies and

63 damping ratios ............................................................................................... 28

64 A.2.2 Determination of the damping ratio by measuring the half-power

65 bandwidth ...................................................................................................... 28

66 A.2.3 Determination of the damping ratio by curve fitting to frequency

67 response methods ......................................................................................... 28

68 A.2.4 Determination of the damping ratio by time domain curve fitting .................... 29

69 Annex B (informative) Criteria for seismic adequacy of gas-insulated metal-enclosed

70 switchgear ..................................................................................................................... 30

71 B.1 General ................................................................................................................. 30

72 B.2 Foundations .......................................................................................................... 30

73 B.3 Methods for anchoring equipment to foundations .................................................. 30

74 B.4 Interconnection to adjacent equipment .................................................................. 30

75 B.5 Use of bracings on switchgear structure ................................................................ 31

76 Annex C (informative) Qualification process flowchart .......................................................... 32

77 Bibliography .......................................................................................................................... 33

79 Figure 1 – Required response spectrum (RRS) for qualification level AG2.5

80 (ZPA=0,25g) ......................................................................................................................... 12

81 Figure 2 – Required response spectrum (RRS) for qualification level AG5 (ZPA =

82 0,50g) ................................................................................................................................... 12

83 Figure 3 – Required response spectrum (RRS) for qualification level AG10 (ZPA =

84 1,00g) ................................................................................................................................... 13

85 Figure A.1 – Monogram for the determination of equivalent damping ratio ............................ 28

87 Table 1 – Seismic qualification levels for switchgear assemblies Horizontal severities ......... 11

88 Table 2 – Comparison of qualification levels between various Standards .............................. 11

89 Table 3 – Summary of maximum stresses, loads etc. ............................................................ 25

90 Table 4 – Example of summary of maximum stresses, loads etc. .......................................... 25

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94 INTERNATIONAL ELECTROTECHNICAL COMMISSION
95 ____________
97 HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR –
99 Part 207: Seismic qualification for gas-insulated switchgear assemblies,
100 metal-enclosed and solid-insulation enclosed switchgear for rated
101 voltages above 1 kV
102
103 FOREWORD

104 1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising

105 all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international

106 co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and

107 in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,

108 Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their

109 preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with

110 may participate in this preparatory work. International, governmental and non-governmental organizations liaising

111 with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for

112 Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.

113 2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international

114 consensus of opinion on the relevant subjects since each technical committee has representation from all

115 interested IEC National Committees.

116 3) IEC Publications have the form of recommendations for international use and are accepted by IEC National

117 Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC

118 Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any

119 misinterpretation by any end user.

120 4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications

121 transparently to the maximum extent possible in their national and regional publications. Any divergence between

122 any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.

123 5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity

124 assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any

125 services carried out by independent certification bodies.

126 6) All users should ensure that they have the latest edition of this publication.

127 7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and

128 members of its technical committees and IEC National Committees for any personal injury, property damage or

129 other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and

130 expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC

131 Publications.

132 8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is

133 indispensable for the correct application of this publication.

134 9) Attention is drawn to the possibility that some of the elements of this IEC Publication may be the subject of patent

135 rights. IEC shall not be held responsible for identifying any or all such patent rights.

136 IEC 62271-207 has been prepared by subcommittee 17C: High-voltage switchgear and

137 controlgear assemblies, of IEC technical committee 17: Switchgear and controlgear. It is an

138 International Standard.

139 This third edition cancels and replaces the second edition published in 2012 including the

140 corrigendum of January 2013. This edition constitutes a technical revision. It also cancels and

141 replaces through merging the first edition of IEC TS 62271 Part 210: Seismic qualification for

142 metal-enclosed and solid-insulation enclosed switchgear and controlgear assemblies for rated

143 voltages above 1 kV and up to and including 52 kV published in 2013.

144 This edition includes the following significant technical changes with respect to the previous

145 edition:

146 a) modification of the minimum voltage rating from 52 kV to above 1 kV in order to include

147 medium voltage equipment previously being within IEC TS 62271-210 scope;

148 b) further harmonisation of qualification procedures with the revised IEEE Std 693-2018

149 Annex A and P including:
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150 1) matching IEC 62271-207 Required Response Spectra with IEEE Std 693-2018
151 performance level spectra and IEC TS 62271-210 spectra;

152 2) addition of a step-by-step procedure assisting the user of the standard to select an

153 appropriate seismic qualification level combining seismic integrity with cost-effective

154 design
155 3) addition of analytical earthquake component combination techniques

156 4) reference to publicly available accelerograms specially developed to match the

157 IEEE Std 693-2018 spectra for testing and analysis purposes, since IEC 62271-207 and

158 IEC TS 62271-210 spectra are identical in shape with IEEE Std 693 spectra.
159 c) Various enhancements of test procedures;
160 d) Addition of minimum contents for seismic qualification reports;

161 e) Scope extended to cover DC GIS including and above 100 kV according to 17C/837/RQ,

162 the result of Questionnaire 17C/825/Q.
163 The text of this International Standard is based on the following documents:
Draft Report on voting
XX/XX/FDIS XX/XX/RVD
164

165 Full information on the voting for its approval can be found in the report on voting indicated in

166 the above table.

167 The language used for the development of this International Standard is English.

168 This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in

169 accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available

170 at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are

171 described in greater detail at www.iec.ch/standardsdev/publications.

172 A list of all the parts in the IEC 62271 series, under the general title High-voltage switchgear

173 and controlgear, can be found on the IEC website.

174 The committee has decided that the contents of this document will remain unchanged until the

175 stability date indicated on the IEC website under "http://webstore.iec.ch" in the data related to

176 the specific document. At this date, the document will be
177  reconfirmed,
178  withdrawn,
179  replaced by a revised edition, or
180  amended.
181
182
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183 HIGH-VOLTAGE SWITCHGEAR AND CONTROLGEAR –
184
185 Part 207: Seismic qualification for gas-insulated switchgear assemblies,
186 metal-enclosed and solid-insulation enclosed switchgear for rated
187 voltages above 1 kV
188
189
190 1 Scope
191 IEC 62271-207 applies to:
192 – gas-insulated switchgear (GIS) assemblies

193 – for alternating current of rated voltages above 52 kV complying with IEC 62271-203

194 – for direct current of rated voltages including and above 100 kV
195 for indoor and outdoor installations, including their supporting structures.

196 – metal-enclosed switchgear and controlgear assemblies for rated voltages above 1 kV and

197 up to and including 52 kV complying with IEC 62271-200 for metal-enclosed and IEC 62271-

198 201 for solid-insulation enclosed, ground or floor mounted, intended to be used under

199 seismic conditions.

200 The seismic qualification of the switchgear assemblies takes into account testing of typical

201 switchgear assemblies combined with methods of analysis. Mutual interaction between directly

202 mounted auxiliary and control equipment and switchgear assemblies is considered.

203

204 Seismic qualification philosophy includes selection of seismic qualification level (Clause 4),

205 methodologies for qualification by testing (Clause 5) and by combined testing and analysis

206 (Clause 6), acceptance criteria (Clause 7) and seismic qualification documentation (Clause 8).

207 The seismic qualification of switchgear assemblies by the manufacturer is only performed upon

208 request of the user.
209 2 Normative references

210 The following documents are referred to in the text in such a way that some or all of their content

211 constitutes requirements of this document. For dated references, only the edition cited applies.

212 For undated references, the latest edition of the referenced document (including any

213 amendments) applies.

214 IEC 60068-2-6, Environmental testing – Part 2-6: Tests – Test Fc: Vibration (sinusoidal)

215 IEC 60068-2-47, Environmental testing – Part 2-47: Tests – Mounting of specimens for

216 vibration, impact and similar dynamic tests

217 IEC 60068-2-57, Environmental testing – Part 2-57: Tests – Test Ff: Vibration – Time-history

218 method

219 IEC 60068-2-64, Environmental testing – Part 2-64: Tests – Test Fh: Vibration, broadband

220 random and guidance

221 IEC 60068-3-3 Edition 2.0 2019-08, Environmental testing - Part 3-3: Supporting documentation

222 and guidance - Seismic test methods for equipment

223 IEC 60099-4 Surge arresters - Part 4: Metal-oxide surge arresters without gaps for a.c. systems

224 IEC 61439-1 Low-voltage switchgear and controlgear assemblies - Part 1: General rules

225 IEC 61869-1 Instrument transformers - Part 1: General requirements
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226 IEC 62271-1, High-voltage switchgear and controlgear - Part 1: Common specifications for

227 alternating current switchgear and controlgear

228 IEC 62271-200, High-voltage switchgear and controlgear – Part 200: AC metal-enclosed

229 switchgear and controlgear for rated voltages above 1 kV and up to and including 52 kV

230 IEC 62271-201, High-voltage switchgear and controlgear – Part 201: AC solid-insulation

231 enclosed switchgear and controlgear for rated voltages above 1 kV and up to and including

232 52 kV

233 IEC 62271-203, High-voltage switchgear and controlgear – Part 203: Gas-insulated metal-

234 enclosed switchgear for rated voltages above 52 kV
235 ISO 2041, Mechanical vibration, shock and condition monitoring – Vocabulary
236 3 Terms and definitions

237 For the purposes of this document, the terms and definitions given in IEC 60068-3-3,

238 IEC 62271-1, IEC 62271-200, IEC 62271-201, IEC 62271-203, ISO 2041 and the following

239 apply.

240 ISO and IEC maintain terminological databases for use in standardization at the following

241 addresses:
242  IEC Electropedia: available at http://www.electropedia.org/
243  ISO Online browsing platform: available at http://www.iso.org/obp
244
245 3.1
246 switchgear and controlgear

247 a general term covering switching devices and their combination with associated control,

248 measuring, protective and regulating equipment, also assemblies of such devices and

249 equipment with associated interconnections, accessories, enclosures and supporting structures

250 SOURCE: IEC Electropedia 441-11-01
251 3.2
252 metal-enclosed switchgear and controlgear

253 switchgear and controlgear assemblies with an external metal enclosure intended to be earthed,

254 and complete except for external connections
255 SOURCE: IEC Electropedia 441-12-04
256 3.3
257 gas-insulated metal-enclosed switchgear
258 GIS

259 metal-enclosed switchgear in which the insulation is obtained, at least partly, by an insulating

260 gas or gas mixture other than air at atmospheric pressure
261 SOURCE: IEC Electropedia 441-12-05
262 3.4
263 solid-insulation enclosed switchgear and controlgear

264 switchgear and controlgear assemblies with an external solid insulating enclosure and

265 completely assembled, except for external connections
266 SOURCE: IEC 62271-201
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267 3.5
268 High Voltage Switchgear (within the scope of this standard)
269 HV Switchgear

270 Gas-insulated switchgear (GIS) assemblies for alternating current of rated voltages above

271 52 kV complying with IEC 62271-203 for indoor and outdoor installations, including their

272 supporting structure
273 3.6
274 Medium Voltage Switchgear (within the scope of this standard)
275 MV Switchgear

276 Metal-enclosed switchgear and controlgear assemblies for rated voltages above 1 kV and up to

277 and including 52 kV complying with IEC 62271-200 for metal-enclosed and IEC 62271-201 for

278 solid-insulation enclosed, ground or floor mounted
279 3.7
280 User (within the scope of this standard)
281 The Utility, the Customer, the final Owner of the qualified equipment
282 3.8
283 brittle material

284 A material that experiences limited or no plastic deformation before fracture. Limited

285 deformation shall be taken as less than 10 % in 5 cm at failure in tension
286 [SOURCE: IEEE Std 693-2018]
287 3.9
288 ductile material

289 Material that experiences considerable plastic deformation before fracture. Considerable plastic

290 deformation is defined as 10 % or greater in 5 cm at failure in tension
291 [SOURCE: IEEE Std 693-2018]
292 3.10
293 flexible equipment

294 Equipment, structures, and components whose lowest resonant frequency is less than 33 Hz

295 3.11
296 rigid equipment

297 Equipment, structures, and components whose lowest resonant frequency is greater than 33 Hz

298 3.12
299 Acceleration of gravity
300 g
301 Acceleration due to gravity that is 9,81 m/s

302 Note 1 to entry: For the purposes of this standard, the value of g is rounded up to the nearest integer, that is

303 10 m/s .
304 3.13
305 ground acceleration

306 The acceleration of the ground resulting from the motion of a given earthquake

307 3.14
308 peak ground acceleration
309 PGA

310 The peak ground acceleration is the maximum ground acceleration of any component of the

311 time history
312 3.15
313 zero period acceleration
314 ZPA

315 The zero period acceleration is the spectral acceleration for frequencies above 33 Hz

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316 3.16
317 floor acceleration

318 acceleration of a particular building floor (or an equipment mounting) resulting from its response

319 to the ground motion of a given earthquake
320 3.17
321 response spectrum

322 A plot of the maximum response of an array of single-degree-of-freedom (SDOF) identically

323 damped oscillators with different frequencies, all subjected to the same base excitation

324 3.18
325 required response spectrum
326 RRS

327 Response spectrum that defines the required level of input motion for a given level of

328 qualification
329 3.19
330 floor response spectrum

331 response spectrum of the floor acceleration history of a building floor (or an equipment

332 mounting)

333 Note 1 to entry: Response acceleration spectra can be calculated for each one of the three components of

334 excitation.
335 3.20
336 superelevation factor

337 amplification factor accounting for the amplification of seismic loading with respect to ground

338 level due to the response of buildings and structures

339 Note 1 to entry: A superelevation factor is used in lieu of a more accurate estimation of the contribution of the

340 building (or other equipment mounting) response to the response of the qualified equipment.

341 3.21
342 resonant frequency

343 Frequencies coinciding with the natural frequency of a system (at which the response amplitude

344 is a relative ma
...