{"id":255266,"date":"2024-10-19T16:52:25","date_gmt":"2024-10-19T16:52:25","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bsi-pd-iec-ts-614632016\/"},"modified":"2024-10-25T12:19:11","modified_gmt":"2024-10-25T12:19:11","slug":"bsi-pd-iec-ts-614632016","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bsi-pd-iec-ts-614632016\/","title":{"rendered":"BSI PD IEC\/TS 61463:2016"},"content":{"rendered":"

IEC TS 61463<\/span> <\/span>, which is a Technical Specification, is applicable to alternating current and direct current bushings for highest voltages above 52 kV (or with resonance frequencies placed inside the seismic response spectrum), mounted on transformers, other apparatus or buildings. For bushings with highest voltages less than or equal to 52 kV (or with resonance frequencies placed outside from the seismic response spectrum), due to their characteristics, seismic qualification is not used as far as construction practice and seismic construction practice comply with the state of the art.<\/p>\n

This document presents acceptable seismic qualification methods and requirements to demonstrate that a bushing can maintain its mechanical properties, insulate and carry current during and after an earthquake.<\/p>\n

The seismic qualification of a bushing is only performed upon request.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
4<\/td>\nCONTENTS <\/td>\n<\/tr>\n
6<\/td>\nFOREWORD <\/td>\n<\/tr>\n
8<\/td>\nINTRODUCTION <\/td>\n<\/tr>\n
9<\/td>\n1 Scope
2 Normative references
3 Terms and definitions <\/td>\n<\/tr>\n
10<\/td>\n4 Symbols and abbreviated terms <\/td>\n<\/tr>\n
11<\/td>\n5 Methods of seismic qualification <\/td>\n<\/tr>\n
12<\/td>\n6 Severities
6.1 At the ground
6.2 At the bushing flange
Tables
Table 1 \u2013 Ground acceleration levels <\/td>\n<\/tr>\n
13<\/td>\n7 Qualification by static calculation <\/td>\n<\/tr>\n
14<\/td>\nTable 2 \u2013 Dynamic parameters obtained from experience on bushings with porcelain insulators (f0 = natural frequency, d\u00a0=\u00a0damping)
Table 3 \u2013 Dynamic parameters obtained from experience on bushings with composite insulators (f0= natural frequency, d\u00a0=\u00a0damping) <\/td>\n<\/tr>\n
15<\/td>\n8 Qualification by dynamic analysis
8.1 General <\/td>\n<\/tr>\n
16<\/td>\n8.2 Modal analysis using the time-history method
8.3 Modal analysis using the RRS
9 Qualification by vibration test
9.1 General
9.1.1 General
Figures
Figure 1 \u2013 Example of model of the transformer system <\/td>\n<\/tr>\n
17<\/td>\n9.1.2 Mounting
9.1.3 External load
9.1.4 Measurements
9.1.5 Standard frequency range
9.1.6 Test methods <\/td>\n<\/tr>\n
19<\/td>\n9.1.7 Testing
Figure 2 \u2013 RRS for ground mounted equipment \u2013 ZPA\u00a0=\u00a00,5\u00a0g [1] [2]
Table 4 \u2013 Example of qualification level: AG5: ZPA = 0,5\u00a0g <\/td>\n<\/tr>\n
20<\/td>\n9.2 Test on complete apparatus
9.3 Test on the bushing mounted on a simulating support
9.4 Test on the bushing alone
10 Evaluation of the seismic qualification
10.1 Combination of stresses <\/td>\n<\/tr>\n
21<\/td>\n10.2 Cantilever test
10.3 Acceptance criteria <\/td>\n<\/tr>\n
22<\/td>\n11 Necessary exchange of information
11.1 Information supplied by the apparatus manufacturer
11.2 Information supplied by the bushing manufacturer <\/td>\n<\/tr>\n
23<\/td>\nFigure 3 \u2013 Response factor R
Table 5 \u2013 Response factor R <\/td>\n<\/tr>\n
24<\/td>\nFigure 4 \u2013 Test with simulating support according to 9.3
Figure 5 \u2013 Determination of the severity <\/td>\n<\/tr>\n
25<\/td>\nAnnexes
Annex A (informative) Flow chart for seismic qualification
Figure A.1 \u2013 Flow chart for seismic qualification <\/td>\n<\/tr>\n
26<\/td>\nAnnex B (informative) Natural frequency and damping determination: Free oscillation test
B.1 Free oscillation test
Figure B.1 \u2013 Typical case of free oscillations <\/td>\n<\/tr>\n
27<\/td>\nFigure B.2 \u2013 Case of free oscillations with beats <\/td>\n<\/tr>\n
28<\/td>\nAnnex C (informative) Static calculation method \u2013 Additional considerations
C.1 General
C.2 Effect of the first bending mode
C.3 Determination of Sc
C.4 Value of abg <\/td>\n<\/tr>\n
29<\/td>\nC.5 Typical seismic response of cantilever type structures
Figure C.1 \u2013 Single degree of freedom system <\/td>\n<\/tr>\n
30<\/td>\nFigure C.2 \u2013 Structure at the flange of a bushing with cemented porcelain [5] [7] <\/td>\n<\/tr>\n
31<\/td>\nC.6 Superelevation factor K
Figure C.3 \u2013 Spring stiffness C in function of cemented part geometry [5] [7] <\/td>\n<\/tr>\n
32<\/td>\nFigure C.4 \u2013 Superelevation factor due to the existenceof transformer body and foundation [5] <\/td>\n<\/tr>\n
33<\/td>\nTable C.1 \u2013 Examples of typical seismic responses <\/td>\n<\/tr>\n
35<\/td>\nAnnex D (informative) Qualification by static calculation \u2013 Example on transformer bushing
D.1 Seismic ground motion
D.2 Critical part of the bushing
D.3 Static calculation
D.3.1 General
Figure D.1 \u2013 Critical part of the bushing <\/td>\n<\/tr>\n
36<\/td>\nD.3.2 Seismic load
Figure D.2 \u2013 Forces affecting the bushing <\/td>\n<\/tr>\n
37<\/td>\nD.3.3 Wind load
D.3.4 Terminal load
Figure D.3 \u2013 Porcelain diameters <\/td>\n<\/tr>\n
38<\/td>\nD.4 Guaranteed bending strength <\/td>\n<\/tr>\n
39<\/td>\nAnnex E (informative) Center clamped bushings
Figure E.1 \u2013 Failure process [6] <\/td>\n<\/tr>\n
40<\/td>\nFigure E.2 \u2013 Failure process, flow chart [5] [6]
Figure E.3 \u2013 Stress profile during the opening process [6] <\/td>\n<\/tr>\n
41<\/td>\nFigure E.4 \u2013 Relation between compression and tensile stress in the bottom edge of the porcelain due to the opening process [6] <\/td>\n<\/tr>\n
42<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Bushings. Seismic qualification<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2016<\/td>\n44<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":255271,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[497,2641],"product_tag":[],"class_list":{"0":"post-255266","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-29-080-20","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/255266","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/255271"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=255266"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=255266"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=255266"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}