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Experimental Investigation of Improvement in the Dielectric Recovery Characteristics of a Molded Case Circuit Breaker Splitter Plate

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Abstract

The dielectric recovery characteristics of a molded case circuit breaker (MCCB) are related to re-ignition after current-zero. This characteristic affects the interruption reliability of an MCCB because the fault current cannot be interrupted if re-ignition occurs despite trip unit operation. Therefore, to prevent electric leakage during re-ignition, an improvement in the dielectric recovery characteristic is required. In this paper, the influence of the dielectric recovery characteristics on the splitter plate after current-zero was investigated, and a structure intended to improve the splitter plate was proposed. Measurement of the dielectric recovery voltage confirmed that the proposed structure offered improvement compared with the existing ones.

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Acknowledgements

This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education, Science and Technology (NRF-2017R1C1B5076968).

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Authors and Affiliations

  1. Department of Electrical Engineering, Dongshin University, Naju, South Korea

    Kun-A Lee

  2. Department of Electrical Engineering, Hanyang University, Seoul, South Korea

    Kwang-Cheol Ko

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  1. Kun-A Lee
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Correspondence to Kun-A Lee.

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Lee, KA., Ko, KC. Experimental Investigation of Improvement in the Dielectric Recovery Characteristics of a Molded Case Circuit Breaker Splitter Plate. J. Electr. Eng. Technol. 15, 757–763 (2020). https://doi.org/10.1007/s42835-020-00344-6

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  • DOI: https://doi.org/10.1007/s42835-020-00344-6

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