The Star Enterprise Providing Substantial Power Demands

Servo Stabilizer Oil Cooled

Capacity Available Upto 5000kVA

Servo Voltage Stabilizer (Oil Cooled)

Servomax Limited is also specialized in manufacturing and supplying Servo-Controlled Voltage Stabilizers that are Three-Phase and Oil-Cooled. Either simple residential appliances or complex industrial machinery should have longer life to enable our needs efficiently. However, well-maintenance of these equipment through perfect stabilization means can increase their longevity. Our three-phase oil-cooled servo-controlled voltage stabilizer units enable high-levels of safety. In the three-phase AC power means, if higher voltages are evident, these units will cut-off the output and if the input voltage becomes lower, these will bring up the voltage to the required level.

We follow magnificent and standard manufacturing processes meeting the IS, CE, and other standards. Eco-friendly strategies are evoked during the build of these units –cutting-edge advanced technologies, and standard raw materials like copper are used. These units are specially incorporated with specific oil lubricant for cooling purpose; better capillaries are provided for oil rotation. With this extensive cooling consideration, even higher capacity ranges can be managed effectively. Heavy loads in summer can be maintained well by these units. Thereby, we assure efficient durability of these units in the three-phase AC power connections.

Standardized servo motors are utilized to design these three-phase oil-cooled servo-controlled voltage stabilizers. The architecture of these units include specific motors are intended to vibrate the oil in the fins. Our units are developed to withstand the capacity range up to 5000kVA. Apart from indoor usage, we also customize the units to suit for outdoor applications. These units are designed for serving various applications like –


  • CNC & VMC Machines
  • Industrial applications
  • IT applications
  • Automobile equipment
  • Elevators
  • Electrical Equipment
  • Metal Processing Equipment
  • Medical Equipment
  • Motor Lab Equipment

Benefits of Three-Phase Oil-Cooled Servo-Controlled Voltage Stabilizers

Servomax Limited’s three-phase oil-cooled servo voltage stabilizers are beneficial because they are –

  • Highly durable
  • Affordable
  • Able to withstand high capacities
  • Capable of higher voltage stabilization


These units are specialized to offer the following protections.

  • Single Phasing Prevention
  • Output Electronic Overload Protection
  • 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 Protections
  • Bypass/Change over switch Protections


Servomax Limited introduces certain elegant indications like –

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

Indications in LCD Display

An LCD Display is provided to the three-phase oil-cooled servo stabilizer units to indicate –

  • 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
  • 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 Timings

  • 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 OC 3Ph
Output Voltage (3-Phase) 415V OC
System Star
Operating Frequency 47 to 53 Hz
Output Voltage Adjustable 380V to 415V OC 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 Oil-Cooled up to 5000kVA
Mode of System Fully Automatic
System Construction As per IS: 9815 – 1994

Our Servomax Limited’s three-phase oil-cooled servo-controlled stabilizers have specific features like –

  • Instant response time 10 milli sec (half a cycle)
  • Greater efficiency above 99%
  • Best regulation as high as +/- 0.5%
  • “Micro-controller” enabled controlled system
  • Wider input range of operations and greater 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
Servomax repair services

Servomax Limited Service Division Service Division (CSD)

Through the brand of Servocare, assures world-class service for various power-conditioning and power-saving products. We are specialized in servicing different kinds of transformers, stabilizers, control panels, and UPS – our service branches are spread across Pan India.

The service team of Servocare includes technically-proficient and experienced Engineers...

Our Clients

Aditya Birla
 Amara Raja
Apollo Health & Lifestyle ltd
Biological E. Limited
Future Group
GVK BIO Accelerating Research
Indian Machine Tool Manufacturers’ Association
Karachi Bakery