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.
Dielectric recovery measurement Molded case circuit breaker (MCCB) Splitter plate
This is a preview of subscription content, log in to check access.
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).
Brdys C, Roumazet JP, Velleaud G, Servant S (1999) Study on the low-voltage electric breaking arc restrike by means of an inverse method. IEEE Trans Plasma Sci 27(2):595–603CrossRefGoogle Scholar
Choi YK, Jee SW (2017) Simple analysis method for the interrupting capability of a contact system in a molded case circuit breaker. J Electr Eng Technol 12(3):1257–1261CrossRefGoogle Scholar
Yang F, Wu Y, Rong M, Sun H, Murphy AB, Ren Z, Niu C (1999) Low-voltage circuit breaker arcs—simulation and measurements. J Phys D Appl Phys 46(27):273001CrossRefGoogle Scholar
Li X, Chen D, Wang Y, Wang Q, Geng Y (2007) Analysis on the interruption process of molded case circuit breaker. IEEE Trans Compon Packag Technol 30(3):375–382CrossRefGoogle Scholar
Hoerauf R, Shipp DD (1991) Characteristics and applications of various arc interrupting methods. IEEE Trans Ind Appl 27(5):849–861CrossRefGoogle Scholar
Shin DK, Golonoy IO, McBride JW (2018) Experimental study of reignition evaluators in low-voltage switching devices. IEEE Trans Compon Packag Technol 8(6):950–957Google Scholar
Liu H, Guan R, Yin N, Xie X, Chen D (2013) Influence of the splitter plates on the high current air arc in low voltage circuit breaker. IEICE Trans Electron E96-C(9):1119–1123CrossRefGoogle Scholar
Chen D, Li X (2005) Measurement of the dielectric recovery strength and reignition of AC contactors. IEICE Trans Electron E88-C(8):1641–1646CrossRefGoogle Scholar
Shea JJ (2002) Dielectric recovery characteristics of a high current arcing gap. IEEE Trans Compon Packag Technol 25(3):402–408CrossRefGoogle Scholar
Shea JJ (2001) The influence of arc chamber wall material on arc gap dielectric recovery voltage. IEEE Trans Compon Packag Technol 24(3):342–348MathSciNetCrossRefGoogle Scholar
Cho YM, Rhee JH, Baek JE, Ko KC (2018) Implementing a dielectric recovery strength measuring system for molded case circuit breakers. J Electr Eng Technol 13(4):1752–1758Google Scholar
Nagaoka H (1909) The inductance coefficients of solenoids. J Coll Sci 27(3):31Google Scholar