IEEE C57.98-2011 PDF
To aid in the interpretation and application of the impulse testing requirements of the IEEE Standard Test Codes for Transformers.
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.
Revision Standard – Inactive-Reserved. Transformer connections, test methods, circuit configurations, failure analysis of lightning impulse, and switching impulse testing of power transformers are addressed. This guide is also generally applicable to distribution and instrument transformers.
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