1. Monitor
The control circuit monitors voltage and compares the measured output with the selected voltage setting.
Power Segment / 10–100 KVA
Three Phase Servo Voltage Stabilizer
Three-phase servo voltage stabilizers from 10–100 KVA for suitable industrial machines, production lines and commercial installations.
KEVOR / Servo voltage stabilizerConfigured for your load
How it works
Voltage correction for the equipment you use
A three-phase servo voltage stabilizer monitors voltage changes and uses a motor-driven correction mechanism to keep the equipment supply close to the selected output level. It can raise low voltage or reduce high voltage within its specified correction range.
KEVOR’s three-phase range covers 10–100 KVA for suitable industrial and commercial requirements. Review the complete electrical load, measured site voltage, starting demand and the machine manufacturer’s supply limits before selection.
Voltage regulation uses the available mains supply. Backup power and electrical isolation are separate requirements.
- Product
- Three Phase Servo Voltage Stabilizer
- Capacity range
- 10–100 KVA
- Supply phase
- Three phase
- Operation
- Automatic servo-controlled voltage correction
- Correction method
- Servo motor-driven voltage regulation
- Standard nominal output
- 400 V AC nominal; custom output reviewed for the equipment
- Input-voltage range
- Selected from measured minimum and maximum site voltage
- Cooling
- Air or oil cooling as specified for the offered construction
- Operating duty & ambient
- Rated duty, ambient limit and any derating confirmed for the installation
- Phase correction / imbalance
- Arrangement and permissible imbalance confirmed in the technical offer
- Protection & bypass
- Supplied features and optional protection itemized in the quotation
- Performance schedule
- Input limits, output tolerance, correction speed, response and efficiency stated for the agreed model
- Enclosure & installation
- Location, ventilation, cable access and service clearances reviewed for the site
- Dimensions & weight
- Confirmed for the agreed configuration
Applications
Select from the equipment you use
The application is a starting point. The complete electrical input, start-up behavior, permissible supply voltage and installation determine suitability.
Servo voltage regulation
Sense the voltage. Adjust the correction.
A servo stabilizer raises low voltage or reduces high voltage within its specified operating range.
2. Adjust
The servo motor moves the regulating mechanism to increase or decrease voltage correction.
3. Regulate
Feedback continues as the supply changes. A large voltage correction takes mechanical movement; the controller’s reaction time and the complete correction time are different.
A conventional variac-based servo design uses a variable autotransformer, a buck-boost transformer and a servo motor. The regulating arrangement and component selection are confirmed for the offered model. Voltage regulation uses the available AC supply; battery backup and electrical isolation are separate functions.
Read the specification clearly
What the technical terms mean
Input range
The incoming voltage window for the selected configuration. Confirm whether full rated load is supported throughout that window.
Nominal output & accuracy
The target voltage and permitted variation under stated conditions. The nominal value alone is not a guarantee of regulation accuracy.
Correction speed
The rate of voltage correction, normally expressed in volts per second. It varies with the selected construction.
Response time
A defined reaction interval. It should not be confused with the time needed to complete a large mechanical voltage correction.
KVA and load current
Capacity must be considered with phase, voltage, simultaneous electrical load and motor starting demand. kW and KVA are not interchangeable.
Protection & bypass
Cut-offs, overload arrangements, phase monitoring and bypass are model-specific. Confirm the actual supplied features in the technical offer.
Air & oil cooling
Air-cooled construction transfers heat to the surrounding air. Oil-cooled construction uses insulating oil in its thermal design. Cooling must suit the load, operating hours, ventilation and ambient conditions.
Frequency & waveform
Voltage correction does not replace a frequency converter or harmonic filter. Check the permitted supply frequency and any distortion limits against the equipment requirements.
Duty & temperature
Continuous duty describes operation under specified conditions; it does not mean unlimited service life. Ambient temperature and temperature rise describe different measurements.
Efficiency & losses
Efficiency depends on the operating conditions and load. Ask which input voltage and load were used for the stated figure. Regulation alone does not establish an electricity-saving percentage.
Phase balance
Three-phase selection needs the load and voltage on each phase. Confirm independent phase correction, neutral requirements and permitted imbalance for the offered design.
Standards & test reports
A standard number should identify the relevant product and test scope. Request the applicable model documents instead of treating a catalogue reference as certification.
Questions, answered
Before you select this Servo
How does a three phase servo voltage stabilizer work?
A controller monitors voltage and operates a servo motor-driven correction mechanism to raise low voltage or reduce high voltage within the selected unit’s operating range.
What is KEVOR’s three phase range?
KEVOR’s published three phase range is 10–100 KVA. Confirm the actual electrical input, simultaneous load and starting demand before choosing a capacity.
Can a Servo stabilizer protect every power problem?
It regulates available supply within its specified operating limits. Backup, galvanic isolation, surge protection and wiring faults require their own assessment. Check the connected equipment manufacturer’s requirements.
How are price and delivery confirmed?
Price depends on the agreed configuration and order scope. KEVOR offers Pan-India door delivery; the quotation confirms freight, dispatch, installation and warranty arrangements.
Your requirement, first
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