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DBW / SBW Series Automatic Voltage Stabilizer

Automatic Voltage Stabilizer Single / Three phase

Voltage regulation problems account for more than 90% of the power quality problems seen at most sites.The Voltage Stabilizers provide protection against mains power sags, surges and brownouts.It is ideal for geographical regions that are subject to inconsistencies in the mains supply, such as Africa,Asia and certain parts of Europe.Each stabilizer has a wide input voltage tolerance,and has been designed to provide the ultimate reliability in hostile environments,where the quality of the mains supply cannot be guaranteed.


•Extremely wide voltage regulation range

•Patent Maintenance free roller type carbon brush

•Individual regulation with unique small dimension

•The temperature of your rack is always under control

•Maximum capacity up to 5000KVA

•Use advanced digital control board

•High Performance ARM chip control

•High Mean time Between Failure(MTBF)

•Reliable and quiet servo motors

•Wheels mounted for easy installation

•Start up delay to prevent over current inrush

•Isolation transformer on request

•Indoor or outdoor version on request


•Broadcast: Regulation for broadcast transmitter sites and studios.

•Commercial: High-rise building, elevator control, large A/C chillers, lighting, other sensitive critical systems.

•Industrial: Industrial automation, process control, CNC,factory robotics, heavy load machinery.

•Medical: X-ray, CT scanner, MRI system, Radiation therapy machine, other medical imaging equipments.

•Telecom: Mobile base stations, exchanges stations, control centers and transmission relay stations.

Input Voltage Single phase 220V±20%, three phase: 380V±20%

Output Voltage Single phase 220V±1-5%, three phase: 380V±1-5%

Supply Frequency 50/60Hz

Insulation Resistance ≥2MΩ

Voltage Regulation Mode Independent phase regulation for three phase

Waveform Distortion nil

Insulation Class H class

Method of Voltage Regulation Regulation transformer with servomotor

Insulated Strength

Single phase: 2000V/1min without puncture

Three phase: 2500V/1 min without puncture

Efficiency >97% on full load

Overload Rating Withstand 200% overload in short time

Protection class IP20(indoor), outdoor type on request

Electrical safety CE equivalent

Operational Temperature -20 C to +45 C

Functions Power-on style,Malfunction protection,Short-circuit protection,Lack of phase protection,Over voltage shutdown,Under voltage shutdown,Safe start


  • Wenzhou, Zhejiang, China
  • Gary Wang