Electrical Insulation Requirements and Test Procedures for SSC Dipole Magnets

Abstract

The development of the basic requirements for the turn-to-turn, coil-to-coil, and coil-to-ground insulation for SSC dipoles is discussed. The insulation method is also described along with test procedures for verification of insulation integrity.

Electrical tests are performed throughout the magnet assembly and fabrication process to verify that coil integrity and insulation quality of the various components and sub-assemblies are within nominal limits. These tests are also required to certify each dipole for SSC acceptance before it is installed in the cryostat and leaves the factory for final installation. The following series of tests, which are conducted at room temperature, are listed below.

• Resistance

• Inductance and "Q"

• Hypot

• Impulse

• Ratiometer

Work performed under contract with the U.S. Department of Energy.