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DBW Voltage Stabilizers — Single Phase Compensating Power Regulators
DBW series single-phase compensating voltage stabilizers maintain a stable 220V output from a fluctuating 160–250V input, using a compensating transformer with servo-driven brush adjustment. Rated 5–100 kVA, they combine high accuracy (±3%) with strong overload capacity, making them suitable for larger single-phase equipment, laboratories, and residential or commercial power distribution.
Key Features
Single-phase 160–250V input with stable 220V ±3% output
Compensating (buck-boost) transformer design for high efficiency
Capacity 5–100 kVA for larger single-phase loads
Servo-driven brush adjustment with smooth continuous regulation
Overload and short-circuit protection with auto-recovery
Low waveform distortion suitable for precision equipment
Applications
- Larger single-phase equipment and laboratories
- Residential and commercial voltage stabilization
- CNC and precision machinery on 220V supply
- Lighting and HVAC systems in weak-grid areas
Selection Guide
Capacity
Sum the load kVA and add 20–30% headroom for inrush and future growth.
Input range
Confirm the site's voltage fluctuation stays within 160–250V.
Environment
Select indoor or outdoor enclosure based on installation location.
- Frequently Asked Questions
What is the difference between DBW and TND regulators?
TND is a contact-type toroidal regulator for smaller loads (typically up to 30 kVA), while DBW uses a compensating transformer for larger single-phase power (up to 100 kVA) with higher efficiency and overload capacity.
What input voltage range does DBW handle?
Typically 160–250V single-phase, output regulated to 220V ±3%.
Is DBW suitable for motor loads?
Yes, the compensating design provides strong overload capacity for motor inrush and larger single-phase loads.
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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
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