Authors : M.J.E. Evbogbai , S.A. Akhadelor , G.I. Ighalo , F.I. Anyasi and I.O. Aimuanwosa
Abstract: This study present a 3kVA, single-phase alternating current, electric are welding machine and a battery charger in one unit. The device was designed, fabricating and tested using material and tools available locally in Nigeria. The work was achieved through the design and construction of a core type power transformer, which step down the 220 Volt main voltages to the appropriate voltage levels of 14 Volt, 26 Volts and 90Volts respectively. The 14 and 26 Volts were rectified using bridge rectifies (MBR1060) to produce the direct current needed for charging the 12 and 14 Volts batteries respectively while the 90Volt terminal is for alternating current welding. The welding transformer on testing has efficiency of 97%, voltage regulation of 80% and a power factor of 79%. The research will be pertinent to Engineers, Technologies, Technicians, Artisan and every one or organizations involved in metal works and battery charging business. It will provide job opportunities and reduces the over dependence of third world countries on imported goods.
M.J.E. Evbogbai , S.A. Akhadelor , G.I. Ighalo , F.I. Anyasi and I.O. Aimuanwosa , 2007. Realization of a 3kVA, Single Phase, Electric ARC Welding Machine with Facilities for Charging Batteries . International Journal of Electrical and Power Engineering, 1: 537-542.