3 Phase Servo Voltage Stabilizer
15kVA – 2000kVA | 3-Phase | Air & Oil Cooled
VoltaPex 3 phase servo voltage stabilizer delivers balanced output even when input supply is highly unbalanced. Each phase corrects independently – perfect for CNC machines, textile mills, and industrial plants with unstable grids.
Protect Your 3 Phase Machinery from Voltage Fluctuations
In three-phase industrial supplies, voltage fluctuation often affects each phase differently. A single-phase stabilizer cannot fix phase imbalance. VoltaPex three phase servo voltage stabilizer monitors and corrects each phase independently.
Independent Phase Correction
Each phase has its own servo mechanism – delivers balanced output even when input phases are highly skewed.
Fast 50V/sec Correction
Responds to voltage dips and surges within milliseconds – prevents motor overheating and controller resets.
Air & Oil Cooled Options
Air cooled up to 150kVA, oil cooled beyond 150kVA for harsh industrial environments.
Wide Input Voltage Range
Operates from 300V to 490V (line-to-line) – ideal for areas with chronic voltage problems.
| Input Voltage Range | 300V – 490V (Line to Line) |
| Output Voltage | 415V ±1% (Adjustable 380-440V) |
| Frequency | 50Hz ±3% |
| Correction Speed | 50V per second |
| Efficiency | ≥98% at full load |
| Phase Correction | Independent per phase |
| Cooling | Air (15-150kVA) / Oil (150-2000kVA) |
| Protections | Over/under voltage, single phasing, reverse phase, overload |
Popular 3 Phase Stabilizer Capacities
Select the right kVA for your industrial application
| KVA Rating | Typical Application | Input Range | Cooling | Approx. Price (INR) |
|---|---|---|---|---|
| 15 kilowatt stabilizer (15kVA) | Small CNC / Printing press | 300-470V | Air | ₹45,000 – ₹55,000 |
| 20 kilowatt stabilizer (20kVA) | VMC machine / Injection moulding | 300-470V | Air | ₹60,000 – ₹75,000 |
| 25 kVA servo stabilizer price range | Textile spinning / Pharma machinery | 290-470V | Air | ₹70,000 – ₹90,000 |
| 30 kva stabilizer | Medium workshop / 3-4 CNC machines | 280-470V | Air/Oil | ₹85,000 – ₹1,05,000 |
| 50 kVA | Small factory mainline | 280-480V | Oil | ₹1,20,000 – ₹1,50,000 |
| 75 kVA | Plastic moulding plant | 270-480V | Oil | ₹1,60,000 – ₹2,00,000 |
| 100 kva stabilizer | Medium factory mainline | 270-480V | Oil | ₹1,80,000 – ₹2,20,000 |
| 150 kVA | Large workshop / Textile mill | 260-480V | Oil | ₹2,50,000 – ₹3,20,000 |
| 200 kVA | Cement plant / Steel processing | 260-480V | Oil | ₹3,50,000 – ₹4,50,000 |
| 300 kVA | Large factory mainline | 250-480V | Oil | ₹5,00,000 – ₹6,50,000 |
Air Cooled vs Oil Cooled 3 Phase Stabilizers
Air Cooled (Up to 150kVA)
- Lower initial cost
- Lightweight and compact
- Easy maintenance
- Best for clean indoor environments
Oil Cooled (150kVA – 2000kVA)
- Superior heat dissipation
- Dust and moisture proof (IP54/IP65)
- Suitable for outdoor installation
- Longer lifespan (20+ years)
3 Phase Applications
CNC & VMC Machines
Fanuc, Siemens, Haas, DMG Mori
Textile Mills
Spinning, weaving, processing
Printing Presses
Offset, flexo, digital
Pharmaceutical
Granulators, compressors
Plastic Injection
Moulding machines
Data Centers
Mainline protection
Cement Plants
Crushers, conveyors
Water Treatment
Large pumps
3 Phase Servo Voltage Stabilizer – Complete Guide
A 3 phase servo voltage stabilizer is essential for any industrial facility with three-phase machinery. Unlike single-phase stabilizers, three-phase units correct all three phases independently, ensuring balanced voltage delivery even when the incoming supply is highly unbalanced.
Why Do You Need a Three Phase Stabilizer?
In many industrial areas, voltage fluctuation affects each phase differently. One phase may drop to 210V while another remains at 250V. This imbalance causes:
- Motor overheating and premature failure
- Increased current draw on the weaker phase
- Tripping of overload relays
- Reduced machine life and productivity
VoltaPex three phase voltage stabilizer solves this by correcting each phase independently, delivering balanced 415V ±1% output.
What is the Price of a 3 Phase Servo Stabilizer?
The 3 phase 10kva servo voltage stabilizer price starts around ₹35,000-45,000. However, for most industrial applications, we recommend starting at 15kVA. Servo stabilizer 10kva price single phase is lower, but for 3-phase loads, you must use a 3-phase unit. 25 kva servo stabilizer price typically ranges ₹70,000-90,000, while servo stabilizer 30kva price is ₹85,000-1,05,000.
Mainline Stabilizer vs. Individual Units
A mainline stabilizer (or mainline voltage stabilizer) is installed at the main incoming supply of a factory, protecting all downstream equipment. This is more cost-effective than buying individual stabilizers for each machine. VoltaPex manufactures mainline units up to 2000kVA.
As a leading servo stabilizer manufacturer india and industrial stabilizer manufacturer, VoltaPex has supplied thousands of 3 phase stabilizers to industries across India and abroad. All units feature copper wound stabilizer construction for maximum efficiency and longevity.
3 Phase Stabilizer FAQ
Protect Your 3 Phase Machinery Today
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