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ZHENGXI is a professional servo voltage stabilizer and automatic voltage regulator (AVR) manufacturer in China, specializing in high-precision voltage stabilization systems for industrial, commercial, and mission-critical applications.
With over 20 years of manufacturing experience, we design and produce single phase and three phase servo voltage stabilizers from 0.5kVA to 4000kVA, supporting OEM & ODM customization for global distributors and engineering projects.
Choosing the right voltage stabilizer manufacturer is critical for equipment safety and production stability.
Output voltage accuracy up to ±2% to ±3%, ensuring stable and reliable operation of sensitive equipment.
Available with digital LED or LCD displays for convenient system monitoring and management.
We offer a wide range of servo voltage stabilizer models and specifications to meet different power requirements. Whether you need a low-power or high-power solution, we can provide the most suitable option for you. Customization is also available for appearance, color, input voltage range, and output voltage, ensuring a solution tailored to your specific needs.
A Servo Voltage Stabilizer (also known as an Automatic Voltage Regulator, AVR) is designed to maintain a consistent output voltage even when the incoming power supply fluctuates. By automatically correcting voltage variations, it helps protect sensitive electrical and electronic equipment from under-voltage and over-voltage conditions.
Servo stabilizers are widely used in industrial, commercial, and critical infrastructure applications where power quality directly affects equipment performance, reliability, and lifespan.
Provides precise voltage regulation for sensitive equipment.
Smooth voltage correction without stepped switching.
Performs exceptionally well under varying load conditions.
Ensures stable voltage for high-precision machining operations.
Maintains consistent beam performance and cutting accuracy.
Protects CT scanners, MRI systems, and laboratory devices.
Improves production stability and equipment protection.
Supports consistent operation and product quality.
Protects servers, storage systems, and network infrastructure.
Ensures stable power for continuous production processes.
Maintains reliable communication network performance.
A servo voltage stabilizer operates through a closed-loop automatic feedback system. It continuously monitors input voltage, detects deviations, and automatically adjusts the output to maintain stable power even under unstable grid conditions.
| Parameter | Specification |
|---|---|
| Capacity | 0.5kVA – 4000kVA |
| Phase | Single / Three Phase |
| Input Voltage | 90V–260V / Customized |
| Output Voltage | 220V / 380V / Customized |
| Accuracy | ±2% to ±3% |
| Frequency | 50Hz / 60Hz |
| Efficiency | ≥95% |
| Cooling | Air Cooling |
| Transformer | 100% Copper |
| Control System | Servo Motor Control |
ZHENGXI Due to excellent management practices, we ensure competitive pricing, timely delivery, and the highest product reliability. These AVR/automatic voltage stabilizers are certified by IEC, CE, RoHS,FCC, ISO9001, ISO14001 and ISO45001. We also offer professional OEM and ODM services to meet your specific needs: you name it, we make it.
Servo voltage stabilizers are widely used in the following fields:







Servo stabilizers are regulated by servo motors, mainline stabilizers are usually regulated by relays or electronically, servo stabilizers are more accurate.
High accuracy, high stability, fast response, long life and adaptability.
Depends on the application scenario. Servo stabilizers are suitable for high precision needs, while static stabilizers are suitable for fast response and contactless applications.
Automatic voltage regulator regulate the stabilized voltage, while UPS provides temporary power support in case of power failure.
Yes, but they are usually used for more powerful industrial equipment, while domestic devices are generally controlled with low-power voltage regulators.
Autotransformers are usually used.
The conventional output voltage is 220V single phase or 380V three phase, depending on the model and application area, and can be customized upon request.
ZHENGXI provides customized automatic voltage stabilizer solutions for distributors, contractors, factories, and OEM partners worldwide.
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