The figure on our voltage regulator changes because it reflects the real voltage. Generally speaking, the voltage regulator can stabilize the voltage, but it is difficult for almost all single-phase voltage regulators to keep the voltage stable at the same level all the time. There must be some power loss during the whole process. Such as heating causing power loss. Although some manufacturers’ voltage regulators will remain unchanged, they have set some programs to keep the figure unchanged.
Post time: Dec-03-2022