Wet-Molded & Field-Control Components

Assembled Insulated Grading Spheres

Also known as: Assembled Equalizing Balls

Assembled insulated grading spheres use multiple pressboard insulation layers with spacer blocks arranged between layers. The assembled structure is customized for field control, insulation distance and mechanical requirements.

Dimensions, materials, tolerances and testing requirements are confirmed according to customer drawings and order specifications.

Key functions and options

  • Multi-layer insulation build
  • Spacer blocks between layers
  • Customized layer and spacer arrangement
  • Copper or aluminum base structures

Typical applications

  • High-field transformer lead-out systems
  • Electric-field control assemblies
  • Complex insulation structures
Quotation preparation

Information to include with your RFQ

  • Assembly drawing
  • Metal-core details
  • Number of insulation layers
  • Spacer arrangement and quantity

For custom parts, a dimensioned drawing is the most reliable starting point. Drawings can be emailed to sales@boreviax.com.

Dimensional inspection of transformer insulation components