Table of Contents

FOREWORD<br>INTRODUCTION<br>1 Scope<br>2 Normative references<br>3 Terms and definitions<br>4 Symbols and abbreviated terms<br>5 Methods of seismic qualification<br>6 Severities<br>7 Qualification by static calculation<br>8 Qualification by dynamic analysis<br>9 Qualification by vibration test<br>10 Evaluation of the seismic qualification<br>11 Necessary exchange of information<br>Annex A (informative) - Flow chart for seismic<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;qualification<br>Annex B (informative) - Natural frequency and<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;damping determination: Free oscillation<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;test<br>Annex C (informative) - Static calculation method<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;- Additional considerations<br>Annex D (informative) - Qualification by static<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;calculation - Example on transformer<br>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;bushing<br>Annex E (informative) - Center clamped bushings<br>Bibliography

Abstract

Applies 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.

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Published
Document Type	Standard
Status	Current
Publisher	British Standards Institution
Pages
ISBN
Committee	PEL/36