AC automatic voltage regulators

Step Voltage Regulators applied in the utility’s distribution systems are generally medium-voltage mechanical automatic voltage regulators (AVR). It should be noted that there are two distinct types of AC automatic voltage booster regulators: Medium-voltage (mechanical) and the Low-voltage regulators (mechanical or electronic). The difference in their operation and design clearly demonstrate that their applications are not the same. The latter is intended to protect end-user devices from overvoltage and undervoltage conditions . Nonetheless, this post will focus on the medium-voltage regulators, which is primarily used by the electric utility to compensate for the voltage drop in the feeders or distribution systems. In addition, the term step-voltage regulator is often used to refer to utility AVR.