Design and Testing of a Phototype Water-Cooled Vacuum Interrupter for Use in Superconducting Magnet Protection Circuits

摘要

A water-cooled vacuum interrupter was designed and tested for use at 25 kA and 10 kV. This device is expected to have a lifetime approximately one order of magnitude greater than commercial dc circuit breakers. Testing showed that, although the device could successfully carry and interrupt 25 kA, interruption reliabililty was only about 95% with a 10 kV recovery voltage. In addition, a structural crack developed in one electrode from either thermal or mechanical stresses or a combination thereof. 11 refs., 4 figs., 1 tab. (ERA citation 13:037286)