Air Cooled Servo Voltage Stabilizers

Air Cooled Servo Voltage Stabilizers

Air Cooled Servo Voltage Stabilizer Manufacturers


Air-Cooled Servo Stabilizers of Servomax Limited, those are intended to stabilize voltage-levels in three-phase power appliances, are characteristically special and advantageous. With an intensive concern of environmental safety, we design servo-controlled voltage stabilizers with eco-friendly principles using natural air-based cooling techniques.

We are the best air-cooled servo stabilizer manufacturers in Hyderabad today as our products and services are top-notch and affordable in the market. Our skilled workforce entails amazing eco-friendly initiatives to save the surrounding ambiance from adverse pollution issues.

The Company’s servo stabilizer products and services are always ready to impart huge savings – we defend your equipment, we save power, we rescue the environment, and we also treasure minimum maintenance costs.

Satisfying the needs of indoor and outdoor voltage stabilization, Servomax Limited offers different sizes and capacities (till 250kVA) of three-phase air-cooled servo voltage stabilizers to a wide range of customers all over the world. Some of the desired applications include –

  • Air-Conditioners
  • CNC and VMC Machines
  • Medical Equipment
  • Television Sets
  • Elevators
  • Lighting Purposes
  • Textile Industries
  • Household Appliances
  • Construction Devices
  • Commercial Malls



  • CNC, VMC Machines
  • Industrial applications
  • IT applications
  • Automobiles equipments
  • Air-conditioners
  • Elevators
  • Construction devices
  • Household appliances
  • Lightning purposes
  • Metal-processing equipment
  • Medical equipment
  • Television sets
  • Textile industry

Benefits of Three-Phase Air-Cooled Servo Controlled Voltage Stabilizers:

  • Economical
  • Available in assorted sizes
  • Enable higher capacities
  • Highly efficient
  • Assure stable output under severe unbalanced conditions

Best Protection
These units are the best assurance for many protections including –

  • Single Phasing Prevention
  • Output Electronic Overload Protections
  • Phase Reversal Protection
  • Input Short Circuit Protection with MCB
  • Input Overload Protection with MCB
  • Output Low Voltage Protection
  • Output High Voltage Protection
  • Audio Alarm for Protections
  • Surge Suppressor Protection
  • Bypass/Change over switch Protection

Our units are disposed of with certain indications to enable a better outlook for the users. These include-

  • Mains Input on 3 LED Indications
  • 3-Phase Output on Indication
  • Phase Reversal Indication
  • Overload Indication

Indications in LCD Display
Our units are enhanced with indications in LCD Display for visual appeal. These include –

  • Input High and Input Low
  • Output on Indication
  • Output High Cut-off and Output Low Cut-off

Programmable Parameters

  • Output Voltage Set (210-245V)
  • Output Low Voltage Cut-off
  • Output High Voltage Cut-off
  • Input Low on LCD Display
  • Input High on LCD Display
  • Sensitivity/Regulation
  • Overload Cut-off
  • CT Full Scale

Programmable Control Timming

  • Overload Cut-off Time
  • Auto Restart Time
  • On and Off Delay Time

Programmable Controls

  • Display Scrolling – Auto / Manual
  • Start / Stop Buttons
  • Menu / Start / Stop / Reset / Log Button
  • Data Log: Last 100 fault events log with Date and Time stamp and works on FIFO basis.
  • Very important for CSD
  • Analysis Problems
Input Voltage Range 300-460V, 340-480V, 360-460V
Type of Cooling AIR COOLED
Output Voltage 415V
Input Voltage Range 300-460V / 340-480V / 360-460V AC 3Ph
Output Voltage (3-Phase) 415V AC
Connections Star
Operating Frequency 47 to 53 Hz
Output Voltage Adjustable 380V to 415V AC in 3-Phase
Output Voltage Regulation +1% (No Load)
Output Voltage Regulation +1% (Full Load)
Overload Capacity 120%
Correction Rate 60 / 30 / 25V per sec – 3 phase
Waveform Distortion Nil
Output Waveform True Reproduction of Input
Insulation Class F
Short Circuit Period and Percentage 300% for 250 milli sec
Normal Operation Temperature 0°C to 45°C
Climate Conditions 90% Rh Max. Non-Condensing at 35°C
Type of Cooling Natural Air-Cooled up to 600kVA
Mode of System Fully Automatic
System Construction As per IS: 9815 – 1994

Salient Features

Here are the specific salient features of our Three-phase Air-cooled Servo Controlled Voltage Stabilizer.

  • Quick response time of 10 milli sec (half a cycle)
  • Very high efficiency above 99%
  • Excellent regulation as high as +/- 0.5%
  • “Micro-controller” controlled system
  • Wide input range of operations and high speed of correction

Metering on LCD Display

  • 3 ph Input voltage ph to ph and ph to Neutral
  • 3 ph Output voltage ph to ph and ph to Neutral
  • System Frequency
  • Output Current on each ph


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