IEEE C57.19.100-2025

This document provides guidance on the use of outdoor power apparatus bushings.

The purpose of this guide is to present general information and recommendations for the application of power apparatus bushings when incorporated as part of power transformers, power circuit breakers, and isolated-phase bus. The loading model developed in this guide is based on oil-impregnated, paper-insulated, capacitance-graded bushings (OIP). Manufacturers may allow the use of this loading model for their resin insulated designs. Always consult with the bushing manufacturer prior to using this model for non-OIP designs.

Revision Standard - Active. Guidance on the use of outdoor power apparatus bushings is provided in this document. The bushings are limited to those built in accordance with IEEE Std C57.19.00™ with references to obsolete voltage classes and breaker bushings.