Servo Stabilizer

Servo voltage regulators (automatic voltage regulators) are a commonly used, traditional type of voltage regulator. They regulate (correct) the mains voltage using a variac, motor, and booster transformer. They are used in homes, factories, hospitals, and anywhere electrical machinery is present to correct mains voltage, and are also used in conjunction with uninterruptible power supplies (UPS). Microprocessor control samples the output voltage as TRUE RMS, and a stable output is obtained by selecting the appropriate correction speed.

Depending on the mains voltage, regulators with correction options in phase-to-neutral ranges of 110-230V, 140-240V, 160-250V, and 180-260V are preferred. Standard regulators are produced with a phase-to-neutral regulation range of 160-250V (phase-to-phase 275-430 VAC). When choosing a regulator’s correction band, it is helpful to regularly measure the mains voltage at specific intervals and make a decision based on the results. Choosing a regulator with an unnecessarily wide correction band means paying extra money due to the cost of the materials used.

Depending on the manufacturing type, correction speeds are lower than static regulators, ranging from 50V/s to 100V/s. Correction speeds can reach up to 200V/s by controlling the variac motor with a MOSFET.

Artsan voltage regulators optionally offer undervoltage, overvoltage, overcurrent, and overheat protection. Variac windings must be copper as standard. However, the booster transformer can be chosen with copper or aluminum windings.

To choose the appropriate servo regulator for your application, please review the regulator types below.