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IEEE STD C57.91-1995: GUIDE FOR LOADING MINERAL-OIL-IMMERSED TRANSFORMERS

IEEE STD C57.91-1995: GUIDE FOR LOADING MINERAL-OIL-IMMERSED TRANSFORMERS
Applications of loads in excess of nameplate rating involve some degree of risk. While aging and long time mechanical deterioration of winding insulation have been the basis for the loading of transformers for many years, it is recognized that there are additional factors that may involve greater risk for transformers of higher megavoltampere and voltage ratings. The risk areas that should be considered when loading transformers beyond nameplate rating are listed below.
This guide is applicable to loading 65 C mineral-oil-immersed distribution and power transformers. Guides for loading, IEEE Std C57.91-1981 (prior edition), IEEE Std C57.92-1981, and IEEE Std C57.115-1991 (redesignation of IEEE Std 756) are all combined in this document as the basic theory of transformer loading is the same, whether the subject is distribution transformers, power transformers 100 MVA and smaller, or transformers larger than 100 MVA. In recognition of different types of construction, special considerations, and the degree of conservatism involved in the loading of this equipment, specific clauses are devoted to power transformers and distribution transformers. In the previously referenced information, the guide for units larger than 100 MVA referenced the IEEE Std C57.92-1981 loading guide for units up to and including 100 MVA.

To read the whole IEEE standard document, click the link below to download the pdf file.
IEEE STD C57.91-1995: GUIDE FOR LOADING MINERAL-OIL-IMMERSED TRANSFORMERS PDF DOWNLOAD
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  1. DanielJanuary 8, 2021 at 9:04 PM

    Podrias actualiza el link de descarga por favor, Could you update the download link please

    ReplyDelete
  2. DanielJanuary 8, 2021 at 9:05 PM

    Could you update the download link please

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