A High-Current High-Voltage Fuse for Protection of Pulsed Power Circuits

R. Sh. Enikeev; Еникеев Р. Ш.; K. S. Sapozhnikov; Сапожников К. С.; A. A. Rudenko; Руденко А. А.

doi:10.31857/S0032816223020167

A High-Current High-Voltage Fuse for Protection of Pulsed Power Circuits

Authors: Enikeev R.S.¹, Sapozhnikov K.S.¹, Rudenko A.A.¹
Affiliations:
1. Efremov Scientific Research Institute of Electrophysical Apparatus
Issue: No 3 (2023)
Pages: 46-52
Section: ЭЛЕКТРОНИКА И РАДИОТЕХНИКА
URL: https://rjraap.com/0032-8162/article/view/670512
DOI: https://doi.org/10.31857/S0032816223020167
EDN: https://elibrary.ru/GSUGTS
ID: 670512

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Abstract

A high-current high-voltage fuse has been developed and tested for protection of some electric power system components at the International Experimental Thermonuclear Reactor (ITER) against short-circuit currents. The fuse has been designed in accordance with the ITER requirements for use in a pulsed operation mode to cut off the current with an amplitude as high as 30 kA in case of a short circuit, thus providing a long-term interruption of the electric circuit with a voltage of up to 9 kV. The design of the developed fuse is described. The main engineering solutions are considered that ensure its compliance with the requirements for the dielectric strength, switching currents, and switch-off time. The results of experimental investigations of the switching characteristics are presented. The range of switching currents and the dielectric strength in a pulsed operation mode with the application of a postswitching voltage are determined.

References

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