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CLC number: TB114.3; O224; O211.6

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Received: 2006-12-19

Revision Accepted: 2007-01-05

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Journal of Zhejiang University SCIENCE A 2007 Vol.8 No.3 P.453~458

http://doi.org/10.1631/jzus.2007.A0453


Research on the overload protection reliability of moulded case circuit-breakers and its test device


Author(s):  LI Kui, LU Jian-guo, WU Yi, QIN Zhi-jun, YAO Dong-mei

Affiliation(s):  Electrical Apparatus Institute, Hebei University of Technology, Tianjin 300130, China

Corresponding email(s):   likui@hebut.edu.cn

Key Words:  Moulded case circuit breakers, Overload protection, Reliability, Test device


LI Kui, LU Jian-guo, WU Yi, QIN Zhi-jun, YAO Dong-mei. Research on the overload protection reliability of moulded case circuit-breakers and its test device[J]. Journal of Zhejiang University Science A, 2007, 8(3): 453~458.

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author="LI Kui, LU Jian-guo, WU Yi, QIN Zhi-jun, YAO Dong-mei",
journal="Journal of Zhejiang University Science A",
volume="8",
number="3",
pages="453~458",
year="2007",
publisher="Zhejiang University Press & Springer",
doi="10.1631/jzus.2007.A0453"
}

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%T Research on the overload protection reliability of moulded case circuit-breakers and its test device
%A LI Kui
%A LU Jian-guo
%A WU Yi
%A QIN Zhi-jun
%A YAO Dong-mei
%J Journal of Zhejiang University SCIENCE A
%V 8
%N 3
%P 453~458
%@ 1673-565X
%D 2007
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2007.A0453

TY - JOUR
T1 - Research on the overload protection reliability of moulded case circuit-breakers and its test device
A1 - LI Kui
A1 - LU Jian-guo
A1 - WU Yi
A1 - QIN Zhi-jun
A1 - YAO Dong-mei
J0 - Journal of Zhejiang University Science A
VL - 8
IS - 3
SP - 453
EP - 458
%@ 1673-565X
Y1 - 2007
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.2007.A0453


Abstract: 
This paper analyzed the reliability and put forward the reliability index of overload protection for moulded case circuit breaker. The success rate was adopted as its reliability index of overload protection. Based on the reliability index and the reliability level, the reliability examination plan was analyzed and a test device for the overload protection of moulded case circuit-breaker was developed. In the reliability test of overload protection, two power sources were used, which reduced the time of conversion and regulation between two different test currents in the overload protection test, which made the characteristic test more accurate. The test device was designed on the base of a Windows system, which made its operation simple and friendly.

Darkslateblue:Affiliate; Royal Blue:Author; Turquoise:Article

Reference

[1] Billinton, R., Fotuhi-Firuzabad, M., Sidhu, T.S., 2002. Determination of the optimum routine test and self-checking intervals in protective relaying using a reliability model. IEEE Transactions on Power Systems, 17(3):663-669.

[2] Li, K., Lu, J.G., Hu, D.L., 1997. The reliability index of protective type electrical apparatus and its theoretical analysis. Transactions of China Electrotechnical Society, 12(3):50-54 (in Chinese).

[3] Li, K., Yao, F., Lu, J.G., Li, Z.G., 2000. Test and Analysis of Reliability for Electromagnetic Relay. Proceedings of the 46th IEEE Holm Conference on Electrical Contacts, Chicago, p.79-82.

[4] Lu, J.G., 1996. Theory of Electrical Apparatus Reliability and Its Application. China Machine Press, Beijing (in Chinese).

[5] Luo, Y.Y., Lu, J.G., Li, Z.G., Lu, B., 1999. Study on Methods of Reliability Test for Switches. Proceedings of 47th Relay Conference, California, p.6.1-6.6.

[6] Subudhi, M., 1992. Life testing of a low-voltage air circuit breaker to assess age-related degradation. Nuclear Technology, 97(3):362-370.

[7] Zhu, Y.X., Liu, P.Z., Huang, Q.F., Zhu, J., Zhang, Y.Y., Chen M.Y., 2000. Equipment for low voltage circuit breaker reliability test. Low Voltage Apparatus, (2):47-48 (in Chinese).

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