大电流发生器是进行电器保护装置调试与检验仪表、互感器等必需的装置。其工作电流从数十安到上千安培。我单位用一台5KVA的自耦变压器制作了一台2V12500A的大电流发生器，花钱少效果好。原变压器铁芯上线圈为25O匝。用4根50mm’的电组并列加绕到铁芯上2匝。按公式VI’二IF；Iw High-current generator is to conduct electrical protection device debugging and testing instruments, transformers and other necessary devices. Its operating current from tens of thousands to thousands of amps. My unit with a 5KVA autotransformer produced a 2V12500A high current generator, less cost effective. The original transformer core coil 25O turns. With 4 50mm ’electric parallel to the iron core plus 2 turns. According to the formula VI ’two IF; Iw