single detailServo Voltage Stabilizer

Servo Voltage Stabilizer In a three phases servo controlled voltage stabilizer, single independents units of variac coupled with.


Volina make servo stabilizers are one of best latest digital power saving technology in country strictly adhering BIS9815:1994 standard & can be installed on main incoming supply hence no need to install separate stabilizers for individual system. It provides you smooth supply without any hunting .We are in this field from past 32 years and PAN India presence.

Main parts of the servo controlled voltage stabilizers are:

Servo motor


S.No. Particulars Details
A Standard Features  
1 Product Name Servo Controlled Voltage Stabilizer
IS 9815 : Part 1 : 1994 | Reaffirmed : 2014 
2 AutoCAD Drawing Provided after acceptance of order 
3 Capacity  5 kVA to 3000 KVA 
4 Winding Material Pure Electrolyte Copper Super Enamel/Glass Coated /DCC, Wire/Strip
5 Oil Quantity as per capacity 
6 Max Current (Per Phase) as per capacity 
7 No Load Losses Less than 1.5 %
8 On Load Losses Less than 2.5 %
9 Max Current (Per Phase) as per capacity 
10 Type of Cooling 1 KVA to 15 KVA (Air Cooled/Oil Cooled) & 25KVA -3000 KVA (Oil cooled) 
11 No. of Phases Three Phases ,  4 Wire
12 Rated Frequency 50 Hz.
13 Load Type Suitable for Unbalanced Voltage and Unbalanced Load 
14 Winding Copper Wound (Dimmer & Transformers)
15 Input Voltage Range 3Ø :200V-480V, 270V-480V,300V-480V, 340V - 480V , 360V-480V
16 Output Voltage 3Ø : 415V ±1 % (adjustable)
17 Response Time <10 msec 
18 Efficiency More  than 95%
19 Rate of Correction (Phase & Neutral) More than 8V/Sec in Single Phase 12V/sec in Three Phase 
20 Wave Form Distortion Nil
21 Environment/Installation Type Indoor Type (IP 32) / Outdoor Type (IP 55 with CPRI Certifcation) 
22 Duty Cycle 24*7 Continous
23 Control Auto / Manual 
B Protections/Indications  
1 Trip / MCCB Overload & Short Circuit Protection
High/Low Voltage Cut Off
Single Phase Sequence Change Protection
Single Phase Prevention System
Over Temperature Cut Off (Optional)
2 Spike & Surge Protection Spike & Surge Protection (Type - II) (Optional)
3 By Pass Arrangement By Pass Arrangement (for in case of Emergency)
4 Indicator  Input/Output Voltage (Per Phase)
Output Current (Per Phase)
5 Fittings Four Plain Rollers
Two Earthing Terminals
Four Lifting Hooks
Oil filling hole with cap
oil level indicator
C Salient Features  
1 Motor Variable Speed High Torque, AC servo Motor with proportional control
2 DG Compatible Special sensing circuit to maintain output voltage
3 Auto / Manual Control Facility on Front Control Plate in unlikely events.
4 Construction  Rugged construction with caster wheels for easy movement.
5 Transformer and Variac Wound with Electrolyte grade Copper of 99% purity, low loss CRGO Sheets
6 Earthing Suitable Earthing Terminal to be provided