IEEE Guide for Loading Mineral-Oil-Immersed Power Transformers Rated in Excess of 100 MVA (65C Winding Rise) (Folded into C57.91-1995) (65C Winding Rise)

Published by	Publication Date	Number of Pages
IEEE	12/27/1991	40

Category: IEEE

Description

IEEE C57.115 – IEEE Guide for Loading Mineral-Oil-Immersed Power Transformers Rated in Excess of 100 MVA (65C Winding Rise) (Folded into C57.91-1995) (65C Winding Rise)

Revision Standard – Inactive-Withdrawn.The guide covers modern power transformers rated above 100 MVA, three-phase equivalent and 65¿¿C rise. The general approach is tutorial. Four different types of loading, that is, normal life expectancy loading, planned loading beyond nameplate rating, long-time emergency loading, and short-time emergency loading, are considered. The various effects of loading a transformer in excess of its nameplate rating are discussed. Temperature and maximum loading limitations are suggested.