A Voltage Stabilizer (Unbalanced Type)—often referring to an unbalanced servo voltage stabilizer—is designed to correct voltage fluctuations, but unlike the balanced type, it does not distribute correction equally across phases or cycles.
In an unbalanced stabilizer, each phase (in a 3-phase system) is corrected independently. This means:
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- Voltage correction is not symmetrical
- Each phase can have a different output voltage level
- Suitable where load across phases is uneven
⚙️ Main Components:
- Servo Motor(s) – Usually one per phase
- Variable Transformer (Variac) – Adjusts voltage per phase
- Buck-Boost Transformer – Adds/subtracts voltage
- Control Circuit – Monitors each phase separately
- Carbon Brushes – Move to regulate voltage
✅ Advantages:
- Ideal for uneven load conditions
- More flexible for real-world industrial setups
- Prevents over/under-voltage on individual phases
- Efficient when phase loads are not equally distributed
📌 Applications:
- Small to medium industries
- Workshops with uneven machinery load
- Commercial buildings with mixed equipment
- Areas with highly fluctuating and unequal phase supply