AUTO POWER REDUCTION APPARATUS

摘要

PURPOSE: An auto power reduction apparatus is provided, which increases efficiency of power saving and generates constant output voltage by supplying constant voltage to a load. CONSTITUTION: A noise filter part(100) filters a 3 phase AC power inputted from a load stage U.V.W supplying a power supply voltage from a power supply input stage R.S.T and a load. A transformer part(110) boosts the AC voltage by 2.4 times by a V connection of amorphous serial transformers(T1,T2). And a voltage/current detection part(130) detects an overvoltage by connecting current transformers(CT1,CT2) on R phase and T phase. A voltage/frequency conversion control part(120) converts a voltage and a frequency of the AC voltage, and comprises main control circuits(122,122') and subsidiary control circuits(124,124').