Low-cost transformer has a capacity of 3kVA, single phase 220V to split phase 120V/240V, used for for 50/ 60Hz AC circuit. IP20 protection grade enclosure makes the device suitable for indoor and outdoor applications.
3 kVA Single Phase to Split Phase Transformer Specifications
Model | CHN-DGS3kVA |
Phase | Single phase to split phase |
Capacity | 3 kVA |
Primary Voltage | 1 Phase / 2 phase 110, 120, 208, 220, 230, 240, 380, 415, 440, 460, 480, |
Secondary Voltage | 120V/240V AC(L1, L2, N, L+L=240V, L+N=120V) |
Frequency | 50/60Hz |
Winding Material | Aluminum/Copper wire (Optional) |
Work Efficiency | ≥95% |
Insulation Resistance | ≥50 MΩ |
Electrical Strength | 2000V AC/1 min |
Noise | ≤35dB (1 meter) |
Insulation Grade | Grade B (130℃), Grade F (155℃), Grade H (180℃) |
Cooling Method | Natural or air cooling |
Overload Capacity | Allow more than 1.2 times rated load to work for up to 1 hour |
Induced Overvoltage Withstand Test | 125Hz/800V/min |
Transformation Ratio | <3% |
Air Carrying Current | <6% |
Impedance Voltage | About 6% |
Total Losses | 10% |
Certification | CE, ISO |
Temperature | -15℃~+45℃ |
Humidity | ≤90%RH, without condensation |
Altitude | <2000m, non corrosive gas and conductive dust |
Enclosure Protection Grade | IP20 |
Warranty | 12 months |
Weight of Aluminium Wire Transformer | Open type: 45kg Protected type: 63kg |
Weight of Copper Wire Transformer | Open type: 48kg Protected type: 68kg |
Single Phase to Split Phase Transformer Schematic Diagram

3 kVA Split Isolation Transformer Dimension (Unit: mm)

Aluminium Wire Transformer Size | Copper Wire Transformer Size |
Open type: a*b*c=240*240*260mm | Open type: a*b*c=240*230*260mm |
Mouting size: D*E=180*170mm (aperture: 20*10mm) | Mouting size: 180*160mm (aperture: 20*10mm) |
Protected type: A*B*C=300*440*500mm | Protected type: A*B*C=380*530*560mm |
Tips: Working principle of rectifier transformer
The windings are composed of two independent wires of primary and secondary and share an iron core. The primary winding is connected to the AC power supply, and the alternating current flows in to generate magnetic potential. The magnetic flux flows in the closed iron core. Alternating current of the same frequency is induced in the secondary winding.
At the beginning of the transformer, the turns ratio of the secondary winding is equal to the voltage ratio. In order to obtain multiple output voltages, some transformers can have multiple secondary windings and taps.
3kVA single phase to split phase transformer convert AC220V to 120V/240VAC, the primary voltage can also choose 110V, 208V, 240V, 380V, 415V, 440V and 480V, 50/60Hz frequency, transformer is powerful and reliable, with low cost and high efficiency.