What guidance does IEEE provide for loading mineral oil immersed transformers?

IEEE loading guidance focuses on thermal limits, insulation aging, and allowable short term overloads based on top oil and winding hot spot temperatures. It provides models and recommendations for evaluating how load cycles and ambient conditions translate into loss of life, informing operators when overloads are acceptable and when they risk accelerated aging. Utilities combine these guidelines with real temperature monitoring and cooling control logic to make operational decisions that balance reliability and asset life.