500 KVA Servo Voltage Stabilizer
Servo Voltage Stabilizer
Servo Voltage Stabilizer
A Servo Voltage Stabilizer keeps your output voltage steady and shields machinery from sudden power fluctuations. Across India, mains supply can swing between 150V–300V on single-phase lines and 300V–500V on three-phase lines. Swings like these cause overloading, poor power factor, high line losses, overheating, and premature equipment failure. Our servo-controlled stabilizers correct these variations within moments, giving industrial, commercial, and process plants a clean, dependable supply.
Leading Servo Voltage Stabilizer Manufacturer in India
Constant Power Pvt. Ltd. is a trusted Servo Voltage Stabilizer Manufacturer & Exporter, building digital stabilizers designed for accurate voltage correction and a long service life. Our Linear Type Servo Voltage Stabilizers are available in 100 KVA, 300 KVA, 500 KVA, and 1000 KVA ratings, suited to industries that need fast, precise, stepless voltage regulation. From our Ahmedabad, Gujarat plant, we supply customers across India and overseas.
Linear Type Servo Voltage Stabilizer – Precise, Stepless Voltage Correction
The Linear Type Servo Voltage Stabilizer uses a servo motor-driven variac with a roller assembly to deliver smooth, stepless, contact-less correction. Because there are no abrupt tap changes, mechanical wear is lower, and the output stays stable even when the input voltage shifts rapidly. This makes it a strong fit for sensitive industrial equipment that cannot tolerate interrupted or uneven power.
| Parameters | Specifications |
|---|---|
| Product | Servo Voltage Stabilizer |
| Power | 100 KVA, 300 KVA, 500 KVA, 1000 KVA |
| Phase | Three Phase |
| Cooling Type | Air cooled / Oil cooled |
| Brand | Constant Power Pvt. Ltd. |
| Input Voltage | 360V to 480V (as per buyer requirement) |
| Output Voltage | 400V to 415V (as per buyer requirement) |
| Country of Origin | Made in India |
| Correction Method | Servo motor-driven variac with roller, stepless and contact-less |
| Output Accuracy | ±1% |
| Efficiency | > 98% at full load |
| Frequency | 50 Hz |
| Protections | Overload, over-voltage, under-voltage, single-phasing |
| Operation | Continuous 24×7 duty |
Features of Our Servo Voltage Stabilizers
Stepless, Contact-less Correction
Roller-on-variac design removes tap-change jumps and reduces contact wear.
High Output Accuracy
Digital control keeps the output close to the set voltage across the full input range.
Wide Input Range
Handles deep sags and surges that damage motors and electronics.
Heavy-Duty Build
Made for continuous industrial duty from 100 KVA up to 1000 KVA.
Digital Monitoring
Clear display of input voltage, output voltage, and load current.
Built-in Protections
Safeguards against overload, high/low voltage, and single-phasing.
Low Maintenance
Simple construction with easy access to roller, brushes, and control card.
Energy Efficient
Low internal losses and better power quality reduce wasted energy.
Applications of Servo Voltage Stabilizers
Our linear type servo voltage stabilizers protect equipment and keep production running across many industries:
- CNC machines and machine tools
- Injection moulding machines
- Manufacturing and process plants
- Cold storage and refrigeration
- Elevators and lifts
- Hospitals and medical equipment
- Data centers and IT loads
- Textile, plastic, and pharma units
- Power plants and substations
- Commercial buildings and malls
Frequently Asked Questions
Common questions about our Servo Voltage Stabilizers, customization and supply.
A Linear Type Servo Voltage Stabilizer holds the output voltage steady by using a servo motor to drive a variac and roller assembly. Because the correction is stepless and contact-less, the output stays smooth even when the input voltage changes quickly.
A control card continuously compares the output voltage with the set value. When it detects a difference, it commands the servo motor to move the roller on the variac winding, which raises or lowers the voltage until the output is back on target.
We manufacture linear type servo voltage stabilizers in 100 KVA, 300 KVA, 500 KVA, and 1000 KVA ratings. Custom capacities and input ranges can be built to match your load and site conditions.
They are used in manufacturing plants, CNC machines, injection moulding units, cold storage, elevators, hospitals, data centers, textile mills, and commercial buildings wherever stable voltage is needed to protect equipment.
Benefits include accurate output voltage, protection for motors and sensitive electronics, fewer breakdowns, lower line losses, better equipment life, and steadier production quality.
A servo stabilizer corrects voltage with a motor-driven variac, which gives smooth, high-accuracy correction at high capacities. A static stabilizer uses electronic switching with no moving parts, which gives a faster response but is more common at lower ratings.
Yes. Our servo voltage stabilizers are built for heavy-duty continuous operation and are suited to large motors, machine lines, and full-plant loads, with ratings up to 1000 KVA.
Yes. Our digital servo voltage stabilizers show input voltage, output voltage, and load current on the front panel, and can include protections such as overload, over-voltage, under-voltage, and single-phasing, depending on the model.
Yes. Constant Power Pvt. Ltd. supplies across India and exports to other countries. We also offer on-site installation, commissioning, and maintenance support.
Call +91 99256 38158 or email info@constantpowerindia.com with your load in KVA, supply phase, and input voltage range. Our team will send a customized quotation.