An Improved Arc Trigger for High Voltage High Current Hybrid Current Limiting Fuse

Abstract:

With conventional high voltage current limiting fuse, the rated current is usually below 200 A. The rated current of the state of the art arc triggering hybrid current limiting fuse is only 600 A, with its interrupting capability being 25 kA, and still can’t meet the requirements of modern industrial application. With the arc triggering hybrid current limiting fuses, the major obstacle to higher rated current and interrupting capability lies in the long operation time of the arc trigger. Increasing the current density of arc trigger notches can effectively improve the operation speed of the trigger. Simulation and parameter optimization of the arc trigger are conducted by using ANSYS 11.0 to attain the optimal fuse element structure. In this study, the notch current density of the arc trigger was as high as 3300 A/mm², and the trigger can be used in the hybrid current limiting fuse of rated 35 kV, 2 kA and 40 kA interrupting capability.

• Periodical: Advanced Materials Research (Volumes 546-547)
• Pages: 338-343
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.546-547.338
• Online since: July 2012
• Authors: Bo Chen, Jin Wu Zhuang, Chao Zhang
• Keywords: Arc Trigger, Current Density, Fault Current Limiter, Hybrid Current Limiting Fuse

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