Design of Side Line Short Circuit Detection Device Load of Low Voltage Circuit Breaker before Closing

Abstract:

It uses MSP430F2274, the ultra low power microcontroller, as the control core of short circuit detection device, through the accurate measurement of low voltage circuit breaker load side of the main wiring of insulation resistance value and the interphase insulation resistance value, outputting high voltage startup sound and light alarm device, and then accomplish the open circuit fault detection. Testing power supply is the use of magnetic coupling resonance principle, from the main power grid electrical insulation for short circuit detection device. The device has the advantages of low cost, small volume, good safety, good detection effect, and can be embedded in use in low voltage circuit breaker.

• Periodical: Advanced Materials Research (Volumes 889-890)
• Pages: 703-706
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.889-890.703
• Online since: February 2014
• Authors: Xiang Fei Meng*, Zhi Chao Li
• Keywords: Low Voltage Circuit Breaker, Magnetic Resonance, MCU, Short Circuit Detection

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DOI: 10.1016/j.aop.2007.04.017