Document Type
Thesis
Date of Award
5-31-1990
Degree Name
Master of Science in Mechanical Engineering - (M.S.)
Department
Mechanical and Industrial Engineering
First Advisor
Michael Pappas
Second Advisor
Bernard Koplik
Third Advisor
Harry Herman
Abstract
This thesis describes the development of an Air-Break circuit breaker, for Heinemann Electric Co., New Jersey, using I-DEAS CAD software. The physical properties obtained from the software, for the components of the armature assembly and the contact arm and the carriage, are used in determining the initial forces on a helical delay spring and in calculating accelerations of links in the trip mechanism. The trip mechanism is a four-bar mechanism with a spring as a coupler. Two second order differential equations define the motion of its links, the contact arm and the carriage. A time history of the links is obtained. The two second order differential equations are reduced to four first order differential equations. A fourth order Runge-Kutta method is used to solve this system of four Ordinary Differential equations. The circuit breaker takes 0.1262 seconds to complete the tripping process.
Recommended Citation
Korrapati, Ravi Kanth, "Development of air-break circuit breaker" (1990). Theses. 2802.
https://digitalcommons.njit.edu/theses/2802
