Single-Phase 220V To Three-Phase 380V Phase Converter

The DZW series is a compact, high-performance Single-Phase To Three-Phase transformer alternative — a smart Phase Converter that turns ordinary 220V single-phase mains into reliable three-phase 380V power. Using advanced SVPWM (space-vector PWM) modulation together with rectification, frequency conversion, inversion and voltage boosting, the unit delivers a true three-phase sine wave with harmonic distortion below 2% and excellent transient response.

Where It’s Used

Workshops, home factories and commercial premises lacking three-phase service
Rural, remote or temporary sites (farms, field operations)
On-site renewables: convert PV or small wind output to three-phase for local loads
Retrofit projects where applying for three-phase supply is impractical or costly

Key Benefits & Features

True sine-wave three-phase output — THD < 2% for smooth motor and sensitive equipment operation.
High conversion efficiency — SVPWM control and premium IPM deliver efficiencies > 93% and low no-load losses.
Fast transient response — output stabilizes within 50 ms to handle load changes.
Robust protection — built-in short-circuit, overload and over-temperature protection for safe continuous operation.
Power frequency isolation transformer — isolates AC and DC buses to eliminate interference and improve safety.
User display & diagnostics — LCD reports input DC voltage, output frequency/voltage, power (kWh), runtime and fault codes.
Cost-effective — uses standard single-phase billing while supplying industrial three-phase loads — avoids three-phase application hassles and fees.
Cleaner mains — filters out disturbances and provides cleaner power for downstream equipment.
Long service life — industrial components and cooling design for extended reliability (design life > 15 years under normal conditions).

TECHNICAL PARAMETERS

Model	DZW-1.5KVA	DZW-2.2KVA	DZW-3KVA	DZW-4KVA	DZW-5.5KVA
	DZW-7.5KVA	DZW-8.5KVA	DZW-11KVA	DZW-15KVA	DZW-20KVA
	DZW-25KVA	DZW-30KVA	DZW-40KVA	DZW-50KVA	DZW-60KVA
Phase	three-phase, three-wire / three-phase, four-wire
Response speed	10ms
Adjustment speed	100V/S
Circuit Method	IGBT / PWM Modulation
Output waveform	Standard sine wave CF=1.4
Output Current	Phase Current High Grade 41A Low Grade 82A
Frequency stabilization	≤0.01%
Load Voltage Stabilization	≤1%
Waveform Distortion	≤2% (pure resistive load)
Phase Angle	120°±1°
Protection reaction time	≤2ms
Efficiency	≥87%
Power	1500VA	2200VA	3000VA	4000VA	5500VA
Size(mm) LWH	270430350	270430350	270430350	270430350	270430350
N.W(kg)	17.5	17.5	17.5	17.5	17.5
Power	7500VA	8500VA	11KVA	15KVA	20KVA
Size(mm) LWH	580355620	580355620	580355620	580355620	580355620
N.W(kg)	34	34	34	35.5	37
The size and weight vary depending on the voltage range, and are subject to the customized actual product.

How to Choose the Right Model

Match continuous motor load (kW/kVA): pick a converter with continuous output ≥ the motor’s rated kW plus startup surge margin (motors often need 2–3× starting current).
Consider duty cycle: frequent starts/stops or long heavy loads may require a larger unit or enhanced cooling.
Check environment: outdoor or dusty sites require higher IP rating and filtered air intake.
Verify supply capacity: the converter’s output is limited by available 220V input current — ensure mains can supply the required input amps.
Installation & grounding: follow local electrical code; recommend a qualified electrician for wiring and earthing.

FAQ

Q: Can this run induction motors and compressors?
A: Yes — the DZW is optimized for motor loads. Because it produces a low-distortion sine wave, motors start and run smoothly. For large motor starts, size the converter to allow starting surge (consult the technical sheet).

Q: How is this different from a rotary phase converter?
A: Unlike rotary converters, the DZW uses solid-state conversion (SVPWM inverter) to produce a stable, low-distortion three-phase sine output close to utility quality — better for sensitive electronics and variable-speed drives.

Q: Will it save me money?
A: It can be more economical than applying for three-phase service (installation fees, upgraded wiring). However, energy consumption depends on loads — the unit converts what you draw from single-phase mains, so size and usage determine cost.