Servo Voltage Stabilizer
Motor-driven automatic voltage correction for the widest range of industrial and commercial loads, from 10 KVA to 1000 KVA.
Engineered for continuous industrial duty
Automatic voltage correction
A servo-motor-driven variable transformer continuously corrects input fluctuations to deliver a steady output.
Oil-cooled & air-cooled variants
ONAN oil-cooled construction for higher capacities, air-cooled for compact indoor installations.
Single & three phase, balanced/unbalanced
3-phase, 4-wire configurations available in both dimmer (unbalanced) and linear types.
Built-in protection
High/low voltage cut-off, overload protection and phase-prevention as standard, with servo bypass on request.
Performance parameters
| Capacity | 10 KVA to 1000 KVA |
| Stabilizer type | 3 Phase, 4 Wire, Dimmer / Linear, Balanced or Unbalanced |
| Type of cooling | ONAN (Oil Cooled) or Air Cooled |
| Correction speed | Approx. 20–30V per second |
| Safety functions | High/Low cut, overload, phase prevention, servo bypass (optional) |
| Application | Indoor type |
| Duty cycle | 100% continuous at 50Hz AC supply |
| Enclosure protection | IP-54 / IP-55 / IP-65 available |
All specifications are subject to change due to technology upgradation without notice. Custom ratings available on request.
Where it's used
Why customers choose this system.
Wide correction range
Corrects a much larger voltage swing than static units, ideal for weak or rural grid connections.
Rugged, field-proven design
Simple electromechanical design that's easy to service in the field, even in remote locations.
Lower cost per KVA
The most cost-effective option for high-capacity industrial correction requirements.
Talk to our engineering team before you order.
Send your capacity, phase, unbalance and installation environment and we'll confirm the right specification — including enclosure rating, safety functions and delivery timeline.