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Fostoria Bushings and Insulators

HV-2

STANDARD BUSHING ASSEMBLIES FOR DISTRIBUTION TRANSFORMERS 8.7kV CLASS, 75 kV B.I.L.


Technical Specification

Product: Transformer Bushing Assembly
Application: Liquid-Filled Transformers

1. Mounting

  • Designed for installation in a 2.25 in (57.2 mm) diameter tank hole.

2. Leakage Distance

  • Externally Clamped: Minimum 7 in (177.8 mm)
  • Internally Clamped: Minimum 8.5 in (215.9 mm

3. Electrical Ratings

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

4. Insulator Construction

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

5. Gaskets

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

Standard: Nitrile (Buna-N)

Optional: Cork and rubber composite

Technical drawing of standard bushing assemblies for distribution transformers, displaying dimensions and specifications for external and internal clamps, and indicating mounting details.