12 kVA Single Phase Servo Voltage Stabilizer
12 kVA single-phase servo voltage stabilizer (230V ±1%) for 3–4 BHK homes, builder floors & clinics. Handles up to 7.4 kW concurrent load. 100% copper wound.
Core Features
- Step-less servo motor voltage correction
- Phase-to-phase high & low cut-off
- Over-load and short-circuit protection
- Fast response to voltage fluctuations
Technical Specifications
| Capacity | 12 kVA |
|---|---|
| Phases | Single Phase |
| Cooling | Air & Oil Cooled |
| Input Voltage | 130V – 270V |
| Output Voltage | 230V ±1% |
| Efficiency | > 98% |
| Warranty | 1 Year |
12 kVA Single Phase Stabilizer Sizing & Appliance Load Guide
Accurate load planning ensures optimal voltage regulation without nuisance tripping. The table below details recommended connected appliances and concurrent running capacity for 3–4 BHK homes, builder floors, and diagnostic clinics.
Nominal Rating
12 kVA
Single Phase (230V ±1%)
Concurrent Running Load
7,400 Watts
7.4 kW Continuous Capacity
Recommended Application
3–4 BHK
Independent Floors & Clinics
3–4 BHK Home Appliance Sizing Breakdown
Simultaneous continuous operation scenario on a 12 kVA single-phase supply
| Appliance / Machine Category | Typical Specification | Units | Wattage / Unit | Running Load |
|---|---|---|---|---|
| Air Conditioners | 1.5 Ton 5-Star Inverter Split ACs | 2 | 1,450 W | 2,900 W |
| Water Heating | 25L Storage Geyser (Morning Peak) | 1 | 2,000 W | 2,000 W |
| Water Pumping | 1.0 HP Submersible Water Pump | 1 | 750 W | 750 W |
| Refrigeration | 350L Double-Door Refrigerator | 1 | 350 W | 350 W |
| Laundry | 7 kg Fully Automatic Washing Machine | 1 | 500 W | 500 W |
| Illumination & Fans | LED Ceiling Lights & Inverter Fans | Full Floor | 500 W | 500 W |
| Entertainment & Home Office | 55" 4K Smart TV, Wi-Fi Router, Laptops | Combined | 400 W | 400 W |
| Total Concurrent Connected Running Load | 7,400 W (7.4 kW) | |||
Independent Builder Floor / 3–4 BHK Apartment
Centralized mainline stabilizer installation directly after the utility meter. Protects all appliances across the home against voltage sags down to 130V.
- Two 1.5 Ton Inverter ACs running concurrently
- 1x 25L Storage Geyser during morning cycles
- 1x 1.0 HP Submersible water pump filling rooftop tank
- Continuous double-door refrigerator, smart TV, Wi-Fi & LED lights
Dental Clinic / Pathology Laboratory
Clean, step-less ±1% voltage conditioning for sensitive diagnostic analyzers, dental chairs, autoclave sterilizers, and clinical air conditioning.
- 2x 1.5 Ton Inverter ACs for patient treatment & waiting rooms
- Dental chair compressor and suction unit (1,500 W)
- Centrifuge, hematology analyzer & laboratory microscope (1,200 W)
- PC workstations, reception billing system & LED clinical lighting (800 W)
Frequently Asked Questions: 12 kVA Single Phase Stabilizer
Can a 12 kVA single-phase servo stabilizer run 3 air conditioners simultaneously?
Yes, provided the air conditioners are modern inverter models (1.5 Ton each). Running three 1.5 Ton inverter ACs concurrently consumes approximately 4,350W, leaving over 3,000W of capacity for a refrigerator, LED lights, fans, and entertainment electronics.
What is the recommended continuous running load for a 12 kVA stabilizer?
The recommended continuous running load for a 12 kVA single-phase servo stabilizer is up to 7,400 Watts (7.4 kW). Maintaining this operating level ensures maximum efficiency (>98%) and leaves sufficient safety margin for startup inrush surges.
What appliances can operate simultaneously on a 12 kVA single phase stabilizer?
A typical full-house load on a 12 kVA unit includes two 1.5 Ton inverter split ACs (2,900W), a 1 HP water pump (750W), one 25L storage geyser (2,000W), a double-door refrigerator (350W), a washing machine (500W), and all home lighting, fans, and televisions (900W).
What input voltage range does this 12 kVA stabilizer handle?
The standard model corrects input voltage fluctuations from 130V to 270V AC, maintaining a constant 230V ±1% output. Wide-range variants (90V–280V) are also manufactured on order for rural and industrial feeder lines with extreme voltage drops.
What is the factory price of a 12 kVA single-phase servo stabilizer in Delhi NCR?
A 100% copper-wound 12 kVA single-phase servo stabilizer typically ranges from ₹28,000 to ₹42,000 depending on the input voltage range (standard vs wide range) and display instrumentation. Contact ServoKai System for a factory-direct quote.