Single-Phase PV Bidirectiona Automatic Voltage Stabilizer 1kva-60kva

Working Principle Explained The stabilizer continuously monitors the input voltage through an automatic sampling control circuit. When voltage deviation is detected: The control circuit sends a signal to the servo motor The motor drives the sliding arm (carbon brush) The contact point on the autotransformer is adjusted Output voltage is stabilized to the rated value This mechanical compensation method ensures: Smooth voltage regulation No step switching No additional waveform distortion Key Advantages of Servo Voltage Stabilizers Large capacity capability – ideal for high-power single-phase loads High efficiency (up to 98%) No waveform distortion introduced Strong overload tolerance Stable performance under inductive, capacitive, resistive, and nonlinear loads Manual / automatic mode switching for flexibility Compared with relay-type stabilizers, servo models provide continuous regulation rather than step-based correction, resulting in more stable output. Electrical Parameters 1 Model ADR 1Kva-60Kva 2 Rated Capacity 1Kva-60Kva 3 Ac Input Number Of Phases Single Phase 1P N Rated Voltage 220V±20% Frequency 50/60Hz 4 Ac Output Number Of Phases Single-Phase 1P N Rated Voltage 220V±2% Frequency 50/60Hz 5 Output Rated Current 4.55A-273A 7 Load Work Continuous Operation At 80% Load 8 Productiveness 98% 9 Insulation Voltage 2500V/Min No Breakdown 10 Insulation Grade F Level 11 Cooling-Down Method Dry Natural Cooling 12 Regulation Accuracy Factory setting: 2%V (adjustable from 1-5%) 13 Dielectric  Strength 2500Vac/Min 14 Noise ≤60db (Excluding Forced Air Cooling Systems) 15 Temperature Rise ≤75℃ 16 Output Voltage Setting Range 220V±10% 17 Bypass Function Manual Bypass 18 Defencive Function Overvoltage, Undervoltage, Overcurrent, And Circuit Break Protection 19 Status Indication Normal, Avr, Fault, And Bypass Indicators 20 Product Weight About 55 (Kg) 21 External Dimensions 480 Mm Long, 360 Mm Wide, 580 Mm High 22 Panel Display Lcd Digital Display 23 Certificate Ce, Rohs, Iso9001 Certification 24 Environment  Temperature -10～40℃ Relative Humidity 15～90%（25℃） Above Sea Level ＜1500M 25 Defects Liability Period The Entire Machine Is Covered By a 12-Month Warranty. 26 After-Sale Service Resolved Within 24 Hours Custom specifications are available upon request. Servo vs Other Technologies Compared to relay-based stabilizers, servo models offer: Higher precision Smoother regulation Better load adaptability While SCR stabilizers respond faster, servo stabilizers remain preferred for high-capacity, cost-sensitive, and mechanically robust applications. Selection Guidance When choosing a servo voltage stabilizer, consider: Select a scaled-up capacity of 2-3 times. Voltage fluctuation range Installation environment Continuous operation requirements ZHENGXI provides engineering-based selection support to ensure optimal configuration. FAQ Q1: Does a servo stabilizer distort the waveform?No. The regulation process does not introduce additional waveform distortion. Q2: Is regular maintenance required?Minimal maintenance is needed. Periodic inspection of carbon brushes is recommended for long-term operation. Q3: Can this stabilizer operate continuously?Yes, it is designed for continuous operation under rated conditions. Conclusion The Single-Phase Servo Automatic Voltage Stabilizer (ADR Series) remains a dependable and economical solution for voltage regulation. With proven mechanical design, high efficiency, and strong load adaptability, it continues to serve as a cornerstone technology in power conditioning systems worldwide.