AVR automatic voltage stabilizer / power line conditioner

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Voltage Fluctuation

Main Characteristics:

  • In the real world, power line voltage fluctuations occur frequently, especially in industrial areas.
  • Every electrical equipment and device has a working voltage limit/tolerance.
  • Some equipment is built to tolerate ±10% of nominal voltage, while others ±5% or less depending on sensitivity.


The correct operation of electrical and electronic equipment depends on voltage accuracy and stability.

  • Long-time overvoltage can lead to equipment damage.
  • Long-time undervoltage can cause malfunctions and computation errors in electrical and electronic equipment.


Installing POWER MASTER Automatic Voltage Stabilizer (AVS) or power line conditioner will ensure the continuity and quality of production.

  • Input voltage variation:
  • Single Phase: 230V ± 15%
  • Three Phase: 415V ± 15% + Neutral (3 phase 4 wire)
  • Excellent output voltage accuracy of within ±1.5% set value.
  • Regulation correction time approximately 0.05 ~ 0.07 sec per volt.
  • Minimum maintenance due to its simplicity in design.
  • Easy installation.
  • Tailor-made to special voltages and configurations, for example, three-phase voltage without neutral or for outdoor configurations.

POWER MASTER Servo-Motor Automatic Voltage Stabilizer provides continuous monitoring of the output voltage (true RMS sensing) by means of an electronic Control Circuit that compares the instantaneous output voltage with the set value.


  • CNC wire-cut / EDM
  • CNC drilling machine
  • CNC milling machine
  • X-ray equipment
  • Industrial robots
  • Communication system
  • PLC equipment
  • Broadcasting equipment
  • Photographic processing equipment
  • Photocopy machine
  • Test equipment
  • Computers
  • Medical equipment
  • Lab equipment
  • Home theatre
  • Precision equipment or instrument

* Specifications are subject to change without prior notice.


Model Power Rated Output (KVA) Rated / Output Current (A) Input Voltage Variation (%) Output Accuracy Dimensions (mm) (+/-) Weight (kg)
S1 – 2 12 1 230 ± 15% ± 1.5% 260 x 280 x 335 1