The on-load tap changer controller and the on-load voltage regulating switch and the on-load voltage regulating transformer can form an automatic voltage regulating power supply system, so that the power supply voltage is stable within user’s required range, ensure that the power supply voltage is not affected by external voltage fluctuations and load changes, and improve the power supply quality and the safety of power equipment.
The shell uses aluminum alloy material to enhance the shielding electromagnetic interference ability, LED digital tube display.