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IEEE C57.98

2011 Edition, December 11, 2011

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Guide for Transformer Impulse Tests



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Description / Abstract:

To aid in the interpretation and application of the impulse testing requirements of the IEEE Standard Test Codes for Transformers.

Purpose

This guide is written primarily for power transformers, but it is also generally applicable to distribution and instrument transformers. Other IEEE standards, plus the purchaser's specifications determine the specific requirements for impulse tests. The purpose of this guide is not to change those standards in any way, but to add background information that will aid in the interpretation and application of those standards. The information contained in this guide is a compendium of technical information provided by engineers and technicians well versed in the art of transformer impulse testing. It is hoped that this guide will provide a basis for a better understanding of impulse test techniques and troubleshooting procedures.