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EVALUTION AND CALIBRATION OF MINIATURE CIRCUIT BREAKER | Singh | INTERNATIONAL JOURNAL OF COMPUTERS & TECHNOLOGY

EVALUTION AND CALIBRATION OF MINIATURE CIRCUIT BREAKER

Ramandeep Singh, Baljinder Singh

Abstract


The purpose of this paper is to examine the significant developments in MV and LV switchgear technology over the last few decades and why they are only recently beginning to benefit the users. A recent development now has sufficient field experience to show how through innovative design it has been possible to vastly improve an auto-reclosing circuit breaker. The author believes that the same innovative ideas will soon be applied to all types of switchgear.  The next generation of military switchgear is likely to be developed for the Electric Warship. Irrespective of which distribution supply is used the next generation of switchgear should benefit from the new technology. Calibration of Miniature Circuit Breaker takes a lot of time. Calibration is done to satisfy the International Standards so that all the MCBs are standardized. In this paper we concerned with decreasing this calibration time of MCBs whose rated current is less than or equal to 32 Amps. Calibration can be done by two methods, wiz, and Dual current and single current parameter method. This paper also deals with the decrease in the Calibration time and increase in Production efficiency by the use of later method which is a modification of the former one proposed and implemented here. This is done by employing faster motor for the calibration.  A recent development now has sufficient field experience to show how through innovative design it has been possible to vastly improve an auto-reclosing circuit breaker. The author believes that the same innovative ideas will soon be applied to all types of switchgear.


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References


HAVELLS INDIA PVT LTD, BADDI PLANT.

Xiaoyong , Zhang Xiaoyan , Yao Fang Li Wenhua , Wu, "Research on the reliability test control system's design of the miniature circuit breaker" IEEE International Symposium on Industrial Electronics, 2009. ISIE 2009, 5-8 July 2009, Page(s): 1380 - 1384.

Wolff, H.W," Integration of miniature circuit breakers into distribution networks", Proceedings of the Institution of Electrical Engineers, August 1970, Volume: 117, Issue: 8, Page(s): 1546 - 1560.

YanYan Luo; JianGuo Lu; ZhiGang Li , "Study of reliability test and analysis for miniature circuit breakers", Proceedings of the Forty-Eighth IEEE Holm Conference on Electrical Contacts, 2002, Page(s): 80- 85.

Wolff, H.W., "Design, performance and application of miniature circuit-breakers". Proceedings of the IEE - Part A: Power Engineering, June 1955, Volume: 102 , Issue: 3, Page(s): 364- 373

J Rye, L J Makay, J C Tobias, ‘The advantages of fixed circuit breaker switchgear’, Fifth International Conference on Trends in Distribution Switchgear.

International Standard IEC 60898-1 and European Standard EN 60898-1 that define the rated current In of a MCB for low voltage distribution applications as the current that the breaker is designed to carry continuously (at an ambient air temperature of 30 °C).


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