NDLI: Simulation of the temporal behavior of circuit breakers and motor starters

Content Provider	IEEE Xplore Digital Library
Author	Stammberger, H. Pursch, H. Zacharias, A. Terhoeven, P.
Copyright Year	2004
Description	Author affiliation: Ind. Autom. Pre-Dev., Moeller GmbH, Bonn, Germany (Stammberger, H.; Pursch, H.; Zacharias, A.; Terhoeven, P.)
Abstract	Low-voltage circuit breakers have to be able to detect and disconnect short circuit currents autonomously. Especially for high-energy applications such as container ships the peak value of the short circuit current has to be limited significantly in order not to overload the downstream parts of the electrical system. That is why the contact system has to open rapidly well before the maximum of the prospective current has been reached. Development and design of these devices faces the challenge of shorter development cycles, smaller volumes and increasing technical requirements making it more crucial to pass the relevant tests in the first try. This work describes a method that enables us to predict the results of short-circuit current tests for single circuit breakers or multiple breakers connected in series before prototypes of the devices are available. Specifically the current, the arc voltage, the position of movable parts, and numerous other data are calculated. We set up a system of coupled differential equations for the subsystems electrical network, contact system of the switching device and the electromagnetic releases. We describe the simulation model and the input data required for the calculations and show results obtained with this method for three-phase circuit breakers and motor starters.
Sponsorship	Components, Packaging, and Manuf. Technol. Soc. of the Inst. of Electr. and Electron. Eng., Inc
Starting Page	35
Ending Page	40
File Size	390153
Page Count	6
File Format	PDF
ISBN	0780384601
DOI	10.1109/HOLM.2004.1353091
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2004-09-23
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Circuit simulation Circuit breakers Circuit testing Short circuit currents Contacts Electromagnetic coupling Containers Marine vehicles Prototypes Voltage
Content Type	Text
Resource Type	Article

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