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Characteristics of Arc-Induction Type DC Circuit Breaker Depending on Alteration of Induction Needle

  • Sang-Yong Park
  • Hyo-Sang ChoiEmail author
Original Article
  • 6 Downloads

Abstract

The existing DC (direct current) circuit breakers used for LVDC (low-voltage direct current) extinguish the arc by using an arc chute. The arc chute has an insulating inner barrier and cuts off the current by increasing the length of the arc and raising the arc voltage. If the arc chute fails to extinguish the arc energy by dissipating heat, the arc generation time will increase, thereby raising the possibility of damage to the cut-off contacts. Therefore, we proposed a new arc-induction type DC circuit breaker with key components like mechanical contacts, an induction needle, and a magnet. The arc generated between the contacts is guided to the induction needle and then grounded via a ground wire before being extinguished. The induction needle is a critical component of such mechanism because it induces the arc. The performance of the DC circuit breaker is determined by modifying the induction needle. In this study, the operational characteristics of the arc-induction type DC circuit breaker according to the variation of the induction needle was analyzed using the Maxwell program. The shape and position of the induction needle were changed, and the changes in the electric field were compared via simulation. As a result, the electric field value was confirmed to have been improved by up to about 20.5% when the two variables were applied.

Keywords

DC circuit breaker Arc-induction type Induction needle Low-voltage Mechanical contacts 

Notes

Acknowledgements

This research was supported by Korea Electric Power corporation (Grant Number: R16XA01). This work was supported by the National Research Foundation of Korea (NRF) Grant funded by the Korea Government (MSIT) (No. 2018R1A2B2004242).

References

  1. 1.
    Thangarajan RB, Chetwani S, Shrinet V, Oak M, Jain S (2015) A comparison of thermoset and thermoplastic arc chutes in molded-case circuit breakers under fault clearing. IEEE Electr Insul Mag 31(2):30–35CrossRefGoogle Scholar
  2. 2.
    Jemma NB, Morin L, Benhaenda S, Nedelec L (1998) Anodic to the cathodic arc transition according to break arc lengthening. IEEE Trans Compon Packag Manuf Technol Part A 21(4):599–602CrossRefGoogle Scholar
  3. 3.
    Jemma NB, Morin L (2002) Transition from the anodic arc phase to the cathodic metallic arc phase in vacuum at low DC electrical level. IEEE Trans Compon Packag Technol 25(4):651–655CrossRefGoogle Scholar
  4. 4.
    Hammerschmidt M, Neuhaus AR, Rieder WF (2004) The effects of material transfer in relays diagnosed by force and/or voltage measurement. IEEE Trans Compon 27(1):12–18CrossRefGoogle Scholar
  5. 5.
    Sallais D, Carvou E, Jemma NB (2007) Opening speed effect on arc duration and extinction gap for usual contact materials, Proceedings of the 2nd International conference on reliability of electrical products and electrical contacts, pp 69–72Google Scholar
  6. 6.
    Park SY, Choi HS (2018) Operating characteristics of arc-induction type DC circuit breaker. Trans Korean Inst Electr Eng 67(7):981–986Google Scholar
  7. 7.
    Ammerman Ravel F, Gammon Tammy, Sen Pankaj K, Nelson John P (2010) DC-arc models and incident-energy calculations. IEEE Trans Ind Appl 46(5):1810–1819CrossRefGoogle Scholar

Copyright information

© The Korean Institute of Electrical Engineers 2019

Authors and Affiliations

  1. 1.Department of Electrical EngineeringChosun UniversityGwangjuSouth Korea

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