CORE LAMINATION FOR SHELL-TYPE CORES, PARTICULARLY FOR TRANSFORMERS

摘要

Core laminations of two piece EI construction for shelltype cores comprising an E part providing three legs 1,2,3 and a yoke 5, and an I part providing a yoke 4, the width c1 of the yoke 5 being greater than the width c2 of the yoke 4, the width b of the outer legs is greater than half the width f of the middle leg, and the sum C1 + c2 is greater than f. In the stacked core the E and I parts may be in respective stacks, or alternate layers may be reversed. The laminations may be secured by cementing, welding or clamping. The arrangement permits nearly wasteless stamping and improved electrical and magnetic characteristics.