Servo Voltage Stabilizer

Servo Voltage Stabilizer (single and three phases) are used with sensitive electronic and electrical equipment like CNC Machine, electrical equipment, motor lab equipment, Medical Equipment etc, by connecting AC Voltage which is not stabilized and dips at one point of time and at other point of time rises to very high value. Voltage Stabilizer are designed to give a constant output voltage for single as well as three phase applications with stability of +/- 1% and efficiency as high as 98% or more.Output voltage stability of Servo Voltage Stabilizer allows the optimum drawing of the current by load and as such no extra electrical power is consumed at low as well as high voltage. Therefore use of servo voltage stabilizer saves power and reduces MDI.

Technical Specifications

Rating 1 KVA to 50 KVA Single Phase 10 KVA to 600 KVA Three Phase
Input Voltage Range 1 Phase 160V - 260V / 120V - 280V and 90V - 270V
3 Phase 270V - 460V / 250V - 480V and 300V - 460V
Output Voltage Range 1 Phase 220 / 230 / 240 +/- 1% 3 Phase 380 / 400 / 415 +/- 1%
Output Waveform True to Input
Input Frequency 45 - 55 Hz
Response Time 10 m. sec.
Correction Speed 10 - 105 V/Sec
Correction Methods Step less Correction Using Variac
Cooling Natural Air / Oil
Efficiency Better Than 98%
Control Circuit Fully Automatic IC Based Solid Stat, Glass Epoxy Control Card for easy on Line Serviceability
Duty Cycle 100%
Operation Less than 1%
Compatibility to DG Set Specially Designed Control Card for faithful operation on Mains as well as DG Set
Suitability Suitable for 3 phase Unbalanced/Balanced Supply, Unbalanced / Balanced Loads
Additional Facility 110 Volts Output can also be given.


  • IS 9815-Compliance
  • Digital Auto-Scrolling1 display indicating all parameters Viz. Line & phase voltages & load current
  • High momentary overload capacity for demanding applications
  • Electronic over load shutdown (optional)
  • Electronic over load shutdown (optional)
  • Unbalanced Line & Load Regulation.
  • Compact Design
  • No Distortion in waveform
  • Suitable for: 100% unbalanced current load
  • Output Accuracy: ± 1%
  • Overload capacity: As per IS 6600
  • Testing: As per IS 9815 / IS 2026
  • Detachable type plug-in control panel for flexibility of placements
  • Terminations: As per IS 3347
  • Quick, steady and accurate correction of voltage
  • Constant and Balanced output voltage, despite load current variations
  • Overall energy saving - above 98% efficiency