Inductive method for AC and DC testing, creation and testing of installations

摘要

High values of critical current multiwire superconducting cables make it impossible to use the galvanic current input method for sample testing. This necessitates the development of an inductive method. The main advantage of this method is the relatively low cost of generating very high currents. Series of toroidal and solenoidal transformers has been developed and tested. The transformers with a steel core have been used for DC tests, and those without the steel core have been used for DC and AC tests. Currents of up to 126.3 kA (quench current DC) and 50 kA AC have been obtained. Joint resistance has been less than 10/sup -10/ Omega . The possibility of using the inductive method for the critical, quench, and recovery currents is discussed, and results obtained are presented.