Servo Voltage Stabilizer Manufacturer in India

Introduction of Product

Highly fluctuating AC mains supply is a very common phenomenon in India and difficulties caused by them are well known. The stable Input supply is a basic necessity in the absence of which sophisticated equipment does not give optimal performance. Major industrial loads are inductive in nature (i.e . A.C. Motors) and they draw considerably high current at High & Low voltages resulting in higher losses which in turn increases the temperature of motors thereby reducing the motor life. Other types of equipment that are affected by high & Low voltages are Lighting loads(Bulbs & Tubes) Air conditioning plants Elevators & lifts, Medical equipment, etc.

For overcoming this ‘Shakti’ manufacture state of the art ‘Servo Voltage Stabilizer’ which ensure constant output voltage thus providing complete protection and optimum efficiency of all electrical & electronic equipment. With the installation of the shakti stabilizer and maintain the output voltage of 400V 3-0 /230V, 1-0 within 1% the motors operate smoothly without drawing excess current.

Shakti’s 3-phase stabilizers are manufactured using individual controls for each phase thus making it suitable for unbalanced input voltage and unbalanced load current. Balance type units can also be supplied on demand.


Effects of Voltage Unbalance

The main effect of voltage unbalance between phases is damage to the motor due to excessive heat. Voltage unbalance can create a current unbalance of 6 to 10 times the magnitude of voltage unbalance. Consequently this current unbalance creates heat in the motor winding that breaks down motor insulation causing cumulative and permanent damage to the motor. The figure shows the percentage of temperature rise as related to voltage unbalance.

The relationship is exponential & approximately increases by twice the square of the voltage unbalance.

In order to avoid frequent tripping of overload relays, the operator sets the relays at higher than actual limits to continue the production. The motors cannot withstand this higher current for a long time and in most cases, the motor burns out and also damages controlling relays/contactors.

The most suitable option is to use servo stabilizers having a separate control system on each phase (Unbalance type). This will take care of both unbalanced and balanced input supply providing a balanced 3-phase supply at the output.


Benefits of Servo Voltage Stabilizer

Maximum load in industries consists of motors, heaters & compressors. At high voltage, they draw higher current thus increasing the power Consumption & MDI and reducing the power factor. Electrical equipment is designed for 230 Volts (1-Ph) i.e. 400 Volts (3-Ph) and has maximum efficiency at this voltage. These heavy electrical equipment draw considerably more power at higher voltage thus increasing the electricity bill of the industry. Similarly, in the case of bulbs & tubes, the percentage increase in power consumption will be more than double the percentage increase of voltage. The higher voltage also results in higher losses causing the higher breakdown of Motors Lightings & all other electrical equipment.

Servo stabilizer can give a saving of up to 15% on power consumption & reduction in the breakdown of electrical equipment up to 80% if the voltage supply is above the recommended voltage and higher efficiency of your equipment if voltage supply is lower than the recommended voltage.


Input voltage variation Percent Reduction in Breakdown Possible Approximate Savings in Power Consumption Possible
380 to 420 Volts Up to 10% Reduction in breakdown of electrical equipment. Up to 5%
380 to 440 Volts Up to 20% Reduction in breakdown of electrical equipment. Up to 7%
380 to 460 Volts Up to 60% Reduction in breakdown of electrical equipment. Up to 10%
380 to 470 Volts Up to 80% Reduction in breakdown of electrical equipment. Up to 15%


Salient Features of Servo Stabilizer


  • Fully solid-state Micro Processor Based Digital control circuit.
  • No waveform distortion.
  • High efficiency.
  • Auto / Manual operation facility.
  • + 1% regulation of the output.
  • No phase shift.
  • Output adjustment possible.
  • High speed of correction.
  • No effect on power factor.


Pointwise benefits of Servo Voltage Stabilizer


  • 10 to 15 % saving in electricity bill ( More than 25 % on lighting load )
  • Up to 80 % reduction in the breakdown of electrical equipment.
  • Reduction in MDI by 10-15 %
  • Improvement in Power factor
  • Payback period within 6-12 months
  • Improved production of the industry.
  • Uniform Quality of the final product.


Technical Specifications


Capacity 10 to 50 kva 1 ph   10 to 2000 Kva 3 ph or as required
Input Voltage Range 300-460/320-460/340-460/350-450 Volt 3 ph or as required
Output Voltage 220/230/240V 1-ph, 380/400/415 V 3-ph
Regulation + 1%
Operating Frequency 50 Hz + 5%
Efficiency 98-99.5% (Based on Capacity & Range)
Effect of Load Power Factor Nil
Wave Form Distortion Nil
Cooling Air / Oil
Location Indoor / Outdoor
Correction Speed Upto 60V per sec 1 ph and 105V per sec 3 ph
Response Time Less than 10 ms
Duty Cycle 100% Continuous
Control Fully Solid State Digital Control


Basic Concept

“Shakti” Servo Stabilizer has a solid-state circuit that controls the servo motor. The motor is mechanically coupled to the arm of a continuously variable autotransformer which feeds to the primary of a Buck/Boost transformer. The stabilizer output voltage is compared with the reference voltage and the resultant error signals control the servo motor providing a true proportional control system rather than an On/Off circuit.


Optional Accessories


  • MCCB / MCB
  • High & Low Voltage Cut -off Output.
  • Electronic Overload Protection.
  • Push Buttons for manual rese.t
  • Single Phasing Preventor.
  • Display of output Load Current.


Fields of Applications


  • All kinds of industries like Textile, Cement Plants, Cold Storage, Paper, Oil & Ginning, Food Processing, Footwear Leather, Mining Dairy Chemical, Automobile, Printing Press, Newspaper, etc.
  • And for Hospitals, Nursing Homes, Banks, Colour Labs, Jewellers, hotels, Resorts, Restaurants, Defense, Telecom installations, Buildings, Commercial Complexes, Show Rooms, Residential Installations, etc.
  • Also for Elevators, AC Plants, Compressors, Medical Equipments Computers Xerox Machines High Power Music systems, CNC Machines, etc.


Servo Voltage Stabilizer Manufacturer and Supplier in Jaipur Rajasthan

Shakti Electrical Corporation is here with the new age Servo Voltage Stabilizer for you which provides high protection to all the electrical equipment from the fluctuating current. Servo Voltage Stabilizer manufacturer mentions that the stabilizers are of 3 phase and individual controls are used for each phase to make it perfect for the fluctuating input voltage. Servo Voltage Stabilizer Manufacturer in India designs the product in a way that it saves a lot of power consumption which is up to 15% and also helps to increase the efficiency of your electrical equipment.

To buy a Servo Voltage Stabilizer or regulator is to provide a life backup to your Electrical equipment as the unbalanced input voltage damages the household Electrical equipment to a great extent and hence resulting in less efficiency and small life of the products. This breakdown of the electrical products results in the loss of the owner. The increase in the electricity bill is also one of the consequences of this current fluctuation. Hence, the owner is in a double loss if they do not invest in a good quality voltage stabilizer or Regulator. It is no longer a luxury but has become a need for every household or even office that requires a long life of their Electrical products and less consumption of electricity. What are you waiting for? Grab your stabilizer now from the dependable servo voltage stabilizer manufacturers in Jaipur Rajasthan.