Manufacture and electrical characterisation of high voltage insulation for superconducting busbars - (Part 2) application techniques and electrical characteristics

摘要

It is planned that the high voltage electrical insulation on the ITER feeder bus bars will consist of interleaved layers of epoxy resin-pre-impregnated glass tapes ('pre-preg') and polyimide. The development and characterisation of these materials was detailed in Part 1 of this report [1]. This paper provides details of the techniques adopted to fully insulate the complex shape of the busbars, forming insulation to fit the many changes in section. Additionally and so far as is reasonably practicable, the insulation should be void and wrinkle free around the helium inlet and outlet pipes that protrude from the surface of the current leads.