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Released: 31.07.2025
IEEE C57.93a-2025
IEEE Guide for Installation and Maintenance of Liquid-Immersed Power Transformers Amendment 1: Cold Start of Power Transformers filled with Natural Ester Liquids
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| Standard number: | IEEE C57.93a-2025 |
| Released: | 31.07.2025 |
| ISBN: | 979-8-8557-2275-8 |
| Pages: | 22 |
| Status: | Active |
| Language: | English |
DESCRIPTION
IEEE C57.93a-2025
The amendment mainly aims to recommend cold start methods of power transformers filled with natural ester fluids. The scope for the amendment is shown as follows: -- Requirements for properties of natural ester fluids under cold conditions. -- Cold start procedure of natural ester-filled power transformers. -- Fluid warming procedures. -- Operation requirements for the transformer's mechanically operated devices.Amendment Standard - Superseded. The amendment recommends Cold start methods of power transformers filled with 1 natural ester liquids are recommended in this amendment.