Air Cooled Servo Stabilizer
10kVA – 150kVA | 1-Phase & 3-Phase | Dry Type Cooling
VoltaPex air cooled servo stabilizer is the perfect choice for small to medium industries, commercial complexes, and clean indoor environments. Compact, cost-effective, and easy to maintain.
What is an Air Cooled Servo Stabilizer?
For industrial and commercial applications up to 150kVA, an air cooled servo stabilizer offers the perfect balance of performance, cost, and simplicity. Unlike oil cooled units, air cooled stabilizers use natural or forced air convection to dissipate heat. They are lighter, more compact, and easier to maintain.
Lower Initial Cost
No oil, no tank – significantly cheaper than oil cooled for the same kVA. Perfect for budget-conscious projects.
Clean Operation
No risk of oil leaks or spillage. Environmentally friendly and safe for indoor installations.
Lightweight & Compact
Easier to install on mezzanine floors or in control rooms. Wall-mountable options available up to 25kVA.
Quick Maintenance
All components are easily accessible. Brush inspection takes only 15 minutes.
Air Cooled vs Oil Cooled – Which One Do You Need?
Air Cooled Servo Stabilizer
- Lower initial cost – 30-40% cheaper than oil cooled
- Clean operation – no oil leaks or spillage
- Lighter weight – easier installation
- Quick maintenance – components easily accessible
- Wall-mountable options available (up to 25kVA)
- Ideal for clean indoor environments
- Fast delivery (3-5 days for popular models)
Oil Cooled Servo Stabilizer
- Higher initial cost (30-40% more)
- Risk of oil leaks
- Heavier – requires floor mounting
- More complex maintenance
- Floor-standing only
- Required for outdoor/dusty environments
- Longer delivery for custom units
Dry Type Servo Stabilizer Construction
A dry type servo stabilizer (air cooled) has no oil. The variac and buck-boost transformers are wound with copper wire and insulated with class F or H materials (155°C or 180°C).
Cooling Methods
- Natural convection – ventilated enclosure for units up to 75kVA
- Forced air cooling – temperature-controlled fans for units above 75kVA
Air Cooled vs Oil Cooled – When to Choose Air
Choose air cooled when: capacity ≤150kVA, clean indoor environment, budget is a constraint, quick delivery needed, easy maintenance is priority.
| Capacity Range | 10kVA – 150kVA |
| Input Voltage (Single) | 170V – 270V |
| Input Voltage (3-Phase) | 300V – 490V |
| Output Voltage | 230V / 415V ±1% |
| Frequency | 47Hz – 53Hz |
| Correction Speed | 50V per second |
| Efficiency | ≥98% at full load |
| Cooling | Natural (≤75kVA) / Forced Fan (>75kVA) |
| Ambient Temperature | 0°C to 45°C |
| Enclosure | CRCA steel, powder coated |
Popular Air Cooled Stabilizer Capacities
For industrial and commercial applications up to 150kVA
| kVA Rating | Typical Application | Phase | Mounting | Delivery | Approx. Price (INR) |
|---|---|---|---|---|---|
| 10 kVA | Small shop / Office | Single | Wall/Floor | 3 days | ₹18,000 – ₹25,000 |
| 15 kilowatt stabilizer | Medium shop / Clinic | Single/3 | Wall/Floor | 3 days | ₹28,000 – ₹38,000 |
| 20 kilowatt stabilizer | Large retail store | Single/3 | Wall/Floor | 3 days | ₹38,000 – ₹50,000 |
| 25 kVA | Showroom / Small hotel | 3-Phase | Floor | 3-5 days | ₹50,000 – ₹65,000 |
| 30 kva stabilizer | Medium hotel / Office floor | 3-Phase | Floor | 3-5 days | ₹70,000 – ₹95,000 |
| 50 kVA | Small factory / Mall feeder | 3-Phase | Floor | 5-7 days | ₹1,10,000 – ₹1,50,000 |
| 75 kVA | Medium factory / Large hotel | 3-Phase | Floor | 5-7 days | ₹1,60,000 – ₹2,20,000 |
| 100 kVA | Large workshop / Commercial complex | 3-Phase | Floor | 7-10 days | ₹2,20,000 – ₹3,00,000 |
| 125-150 kVA | Industrial unit / Mainline | 3-Phase | Floor | 7-10 days | ₹3,00,000 – ₹4,50,000 |
Need Fast Delivery?
Popular air cooled models (10-50kVA) available from stock. Same-day dispatch for urgent requirements.
Where Air Cooled Stabilizers Are Used
CNC Machines
Small VMC, Lathes
Printing Presses
Offset, digital
Pharmaceutical
Small machinery
Retail Shops
Wall-mountable units
Corporate Offices
Server rooms
Hotels
Guest rooms, kitchen
Schools
Computer labs
Clinics
Medical equipment
Digital Voltage Stabilizer – Smart Features
Real-time Display
Shows input/output voltage and load current
Configurable Settings
Adjustable high/low cut-off and time delays
Complete Protection
Over/under voltage, overload, short circuit
Air Cooled Servo Stabilizer – Complete Guide
An air cooled servo stabilizer is the workhorse for small to medium industries, commercial complexes, and clean indoor applications. For capacities up to 150kVA, air cooling offers the perfect balance of performance, cost, and simplicity.
When to Choose Air Cooled Over Oil Cooled
- Capacity ≤150kVA: Air cooling is perfectly adequate and more economical
- Clean indoor environment: No dust or moisture concerns
- Budget constraints: Air cooled units are 30-40% cheaper
- Quick delivery needed: Popular models available from stock
- Easy maintenance priority: No oil checks or filtration required
What is the Price of a 30 kVA Stabilizer (Air Cooled)?
A 30 kva stabilizer in air cooled construction costs approximately ₹70,000 – ₹95,000 for a 3-phase unit. Single-phase 30kVA costs more per kVA due to higher currents. For a 15 kilowatt stabilizer (15kVA), prices start at ₹28,000 – ₹38,000.
Maintenance of Air Cooled Stabilizers
Air cooled industrial servo stabilizers require minimal maintenance:
- Check carbon brushes every 6 months (15-minute job)
- Clean air vents and fans every 3-6 months (depending on dust levels)
- Annual electrical testing recommended
VoltaPex is a leading servo stabilizer manufacturer india for air cooled units, with popular models available from stock. All units feature copper wound stabilizer construction and come with a 2-year warranty.
Frequently Asked Questions
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