A servo voltage stabilizer is an advanced power protection device that uses a closed-loop control system and a servo motor to provide precise and continuous regulation of output voltage, safeguarding sensitive equipment from damaging power fluctuations.
How It WorksA servo stabilizer continuously monitors the input voltage and makes real-time, smooth adjustments (unlike the stepped adjustments of relay-based stabilizers) to maintain a stable output.
- Voltage Sensing: A control circuit continuously monitors the incoming AC voltage supply.
- Deviation Detection: If the input voltage sags or surges from the preset nominal value (e.g., 230V or 400V), the control circuit calculates the necessary correction.
- Motor Activation: The control circuit activates a servo motor, which is mechanically linked to the movable brush of a variable transformer (variac).
- Voltage Adjustment: The servo motor moves the brush along the variac's winding to increase or decrease the voltage to the primary side of a buck-boost transformer.
- Stable Output: The buck-boost transformer then ensures the final output voltage is stable, precise (typically within ±1% accuracy), and delivered to the connected load.
Key Benefits
- High Precision: Provides an output voltage accuracy of typically ±1%.
- Rapid Response: Corrects voltage fluctuations in real-time, even with frequent or wide variations.
- Equipment Protection: Safeguards sensitive and expensive electronics and machinery from damage caused by surges, sags, and spikes, thereby extending their lifespan.
- Energy Efficiency: Helps reduce electricity wastage by ensuring appliances operate at optimal voltage, which can lower electricity bills.
- Wide Application: Suitable for both single-phase (homes, offices) and three-phase (industrial) applications