Development of Simulation Software for Pressure Calculation of Arc Chute and Magnetic Release Characteristics of Low Voltage Circuit Breaker

Based on the standard algorithm of pressure calculation,a calulation model of the pressure inside arc chute during short circuit interruption was proposed,taking into account the influence of venting,splitter plates,etc.And the corresponding software was developed.Coupling the electromagnetic-electric circuit-mechanical motion to describe the dynamic characteristics of the clapper type magnetic release,the software was developed to calculate its dynamic characteristics,and the design of the reactive spring parameters for the new type adjustable magnetic release was optimized.It better resolves the new type adjustable rebease,s counter-force characteristic design problems.