PD IEC/TS 61463:2016

What is PD IEC/TS 61463 – Seismic qualification of bushings about?

PD IEC/TS 61463 is an International Standard on seismic qualification of bushings, enabling the structural integrity and operational stability of bushing flange.

PD IEC/TS 61463 is applicable to alternating current and direct current bushings for the highest voltages above 52 kV mounted on transformers, other apparatus or buildings.

PD IEC/TS 61463 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.

Who is PD IEC/TS 61463 - Seismic qualification of bushings for?

PD IEC/TS 61463 on seismic qualification of bushings is relevant to:

• Manufacturers of bushings
• Dealers and importers of bushings
• Electrical engineers
• Construction companies
• Product design engineers
• Quality testing personnel

Why should you use PD IEC/TS 61463 - Seismic qualification of bushings?

The seismic qualification must assure the equipment will hold its capability to perform the required safety functions during and after a seismic event keeping such a state that corresponds to the end of its qualified life.

PD IEC/TS 61463 provides users three methods and combinations for assessing seismic qualification:

• Qualification by static calculation
• Qualification by dynamic analysis
• Qualification by vibration test

PD IEC/TS 61463 provides users guidance on seismic qualification, severities, qualification by static calculation and dynamic analysis, qualification by vibration test, evaluation of seismic qualification, and necessary exchange of information, ensuring the safety and operability of bushings.

With the adoption of PD IEC/TS 61463, users can assess the seismic qualification of bushings, ensuring the quality and performance necessary for safety, reliability and longevity in transformers and building applications.

What’s changed since the last update?

PD IEC/TS 61463:2016 replaces the first edition published in 1996 and amendment 1:2000. This edition constitutes a technical revision:

• The seismic spectrum profile has been substituted with the one of IEEE Std 693-2005, worldwide used as a reference
• The acceptance criteria have been reviewed and the maximum permissible stress for each main material has been harmonized with the relevant IEC Standard for that material
• A load on the head has been prescribed when the bushing is subject to the vibration test
• The sine sweep test has been added as a method of search of resonance frequency worldwide used