Single-Phase Servo Voltage Regulators
ELSIPOWER single-phase servo voltage regulators (3.5 – 30 kVA) with microprocessor-controlled servo motor and variac for homes, offices, shops and small businesses.
ELSIPOWER voltage regulators automatically correct low and high mains voltage to protect your machines, electronics and production. Servo and static models, single-phase 3.5–30 kVA and three-phase 10.5–800 kVA.

ELSIPOWER single-phase servo voltage regulators (3.5 – 30 kVA) with microprocessor-controlled servo motor and variac for homes, offices, shops and small businesses.
ELSIPOWER single-phase static voltage regulators (10 – 30 kVA): fully electronic, up to 20 ms correction, 97% efficiency.
ELSIPOWER three-phase servo voltage regulators (10.5 – 400 kVA) with independent per-phase control for industry, production lines, CNC and commercial buildings.
A voltage regulator keeps the output voltage constant when mains voltage drops or rises, preventing motor failures, burnt electronics and production stoppages.
ELSIPOWER supplies single- and three-phase voltage regulators with site survey, installation and 24/7 technical service.
| Model | Power range | How it works | Best for |
|---|---|---|---|
| Single-phase servo | 3.5 – 30 kVA | Microprocessor-controlled servo motor corrects voltage smoothly. | Homes, offices, shops, clinics, workshops |
| Three-phase servo | 10.5 – 400 kVA | Balances each phase; economical at high power. | Factories, production lines, hotels, hospitals |
| Single-phase static | 10 – 30 kVA | Electronic correction within 20 ms, no moving parts; 97% efficiency. | Medical devices, servers, test equipment |
| Three-phase static | 30 – 800 kVA | Fast, silent static regulation with low maintenance. | CNC machines, data centers, precision production |
Add up the connected load, divide by the power factor and add a margin for motor inrush currents. Choose a three-phase model for three-phase machines.
Our engineers measure your mains range and size the regulator during a site survey.
It keeps output voltage constant during sags and surges, protecting your equipment.
Servo models correct voltage mechanically and are economical at high power; static models correct electronically, faster and with no moving parts.
Single-phase for homes, offices and single-phase loads; three-phase for factories and three-phase machines.
No. A regulator corrects voltage but cannot supply power during an outage — you need a UPS for that.
Power, phase, technology, input range and options. We prepare a quotation to your needs.
Yes, including site survey, installation and 24/7 service.
Send us your load list or the devices you want to protect; we calculate the required capacity and send your quotation.