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TNS Three Phase Servo Voltage Stabilizers — 3 Phase Automatic Voltage Regulator
TNS series three-phase high-precision servo voltage stabilizers regulate a fluctuating 280–430V three-phase input to a stable 380V ±3% output, using servo-driven variable transformer technology. Rated 6–100 kVA for industrial machinery, CNC equipment, and three-phase installations requiring accurate voltage with fast correction.
Key Features
Three-phase 280–430V input with stable 380V ±3% output
Servo motor-driven variable transformer for continuous regulation
High precision ±3% with fast response time
Capacity 6–100 kVA for industrial three-phase loads
Over/under-voltage and phase protection
Low waveform distortion for CNC and precision equipment
Applications
- CNC machine tools and machining centers
- Three-phase industrial machinery
- Printing, textile and packaging lines
- Laboratories and test equipment
Selection Guide
Phase
Confirm three-phase 4-wire supply for the load.
Capacity
Sum three-phase load kVA and add headroom.
Precision
Choose servo (TNS/SVC) for ±3% precision on CNC and precision loads.
- Frequently Asked Questions
What is a TNS voltage stabilizer?
TNS is a three-phase servo voltage stabilizer (three-phase automatic voltage regulator) that keeps 380V output stable from a fluctuating three-phase input, using a servo-driven variable transformer.
How is TNS different from SVC?
Both are three-phase high-precision servo stabilizers; TNS is the standard three-phase servo designation, while SVC covers high-precision servo regulation for similar three-phase loads.
What voltage range is covered?
Input 280–430V three-phase (4-wire), output regulated to 380V ±3%.
Instant Selection & Quote Calculator
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| Base price (interpolation) | $20 |
| × Product factor | ×1.0000 |
| × Country factor | ×1.0000 |
| × Copper-linked factor | ×1.0000 |
| + Options / accessories | $0 |
Complete equipment — no winding copper linkage
Reference prices are for estimation only and do not constitute a formal offer.
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