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Fostoria Bushings and Insulators

HC-7

FOR MOUNTING IN 3.38″ DIAMETER HOLE


Technical Specification

Product: Transformer Bushing Assembly
Application: Liquid-Filled Transformers

1. Electrical Ratings

  • Electrical ratings are based on use in liquid-filled transformers, with the lower end of the bushing submerged below the oil level.

2. Construction

  • Insulator Material: High-quality electrical-grade wet-process porcelain.
  • Finish: Standard gray glaze, unless otherwise specified.

3. Gasket Options

To specify this option, add suffix “C” to the part number when ordering.

Standard Gasket: Nitrile (Buna-N).

Optional Gasket:Cork and rubber composite

Technical diagram of electrical bushings for mounting in a 3.38" diameter hole, detailing specifications for 2.5 kV and 5 kV classes, including leakage distance and part numbers.