Sudden sags and surges on systems with fast-changing loads happen faster than a servo regulator can follow. A static regulator performs the correction within a small fraction of a second.
With no moving parts there is no mechanical wear, brush maintenance or motor failure. ONS Enerji designs static regulators around your required number of taps, accuracy and response speed.
How does it work?
The transformer winding is divided into multiple taps. A microprocessor control board continuously monitors input and output voltage and engages the required tap using semiconductor switches (SSR/thyristor/triac) or relays.
Because tap changing is electronic, correction is very fast. Output accuracy depends on the number of taps: more taps give finer adjustment, at the cost of higher complexity and price.
Key features
Applications
- Production lines with fast-changing loads
- Laser, plasma and automation systems
- Medical and laboratory equipment
- Facilities with heavy loads that switch on and off frequently
- Applications where vibration or environment stress mechanical parts
Technical selection parameters
| Parameter | Options / typical range |
|---|---|
| Phase configuration | Single-phase or three-phase |
| Power | Sized per project in kVA |
| Correction type | Stepped (electronic switching) |
| Correction speed | Typically in the millisecond range |
| Output accuracy | Depends on tap count; generally ±1.5% to ±5% |
| Input voltage window | Designed per application |
| Switching element | SSR, thyristor, triac or relay (design dependent) |
| Protection functions | Over/under-voltage, overload, over-temperature |
This table shows general characteristics of the technology and the parameters defined at order. Exact values are confirmed per project and in the datasheet.
How to choose the right unit
- If voltage changes are sudden and frequent, evaluate static technology first.
- Define the required output accuracy; the number of taps follows from it.
- Account for total load, starting currents and 20–25% headroom.
- If very high precision is needed, ask about a combined servo solution.
Frequently Asked Questions
01Is a static regulator better than a servo regulator?
Not better, different. A static regulator is very fast and has no mechanical parts; a servo regulator offers stepless, more precise correction. The right choice depends on load speed and accuracy needs.
02Does a static regulator need maintenance?
With no moving parts there is no brush or motor maintenance. Periodic general inspection, connection tightness and ventilation cleaning are sufficient.
03Why is the output of a static regulator stepped?
Voltage is corrected by switching between transformer taps, so the output moves in small steps between taps. More taps mean smaller steps.
04Do you manufacture three-phase static regulators?
Yes. We design and build single- and three-phase static regulators to your load and voltage data.