Jinma Electric 380V to 220V three-phase isolation transformer adopts a dry oil-free structure, and the winding is equipped with H-class insulation materials (temperature resistance is 180℃), which is fireproof, environmentally friendly and easy to maintain.
The products have passed CE certification, and the indicators of electromagnetic radiation, insulation strength, and temperature rise control meet the EN 60076 series standards, which can meet the safety compliance audit requirements of electrical equipment imported from Vietnam.
| Category | Item | Parameter |
| Electrical Parameters | Rated Capacity | 5kVA–5000kVA (customized per project) |
| Number of Phases | Three-phase | |
| Input Voltage | 380V | |
| Output Voltage | 220V | |
| Voltage Error | Within ±1% | |
| Three-phase Voltage Unbalance | ≤2% | |
| Conversion Efficiency | 98% | |
| No-load Loss | Below 0.3% | |
| Structure & Protection | Structure Type | Three-phase dry-type (oil-free) |
| Insulation Class | Class H (temp. resistance 180℃) | |
| Protection Class | IP23 | |
| Enclosure Material | Anti-corrosion steel plate | |
| Certification | CE (EMC, LVD), compliant with EN 60076 series | |
| Environment & Delivery | Operating Temperature | -20℃ to 70℃ |
| Relative Humidity | ≤95% | |
| Delivery Time | Fastest 7 days (direct from factory) | |
| Rated Frequency | Customized per project / pending tech confirmation |
Directly connected to the power grid or using ordinary supporting transformers, it is difficult to meet the three requirements of the Vietnamese market at the same time.
Jinma Electric’s 380V to 220V three-phase transformer relies on the principle of electromagnetic induction to convert the 380V input voltage into a 220V output voltage to provide an adapted power supply for the three-phase 220V refrigeration equipment exported to Vietnam.
The device only realizes voltage level conversion, does not change the power supply frequency, and has no backup power supply capacity; the voltage output accuracy takes effect within the rated operating conditions and reasonable input fluctuation range, and is affected by the actual load.
Background: Cold chain enterprise refrigeration units are exported to Vietnam.
Issues.: Poor voltage adaptation, 8% deviation in cooling capacity, and 20% increase in energy consumption.
Solution Replace the Jinma Electric transformer.
Result: The cooling capacity is up to standard, the energy consumption is reduced by 15%, and the monthly power saving fee exceeds US 55,000.
Vietnam’s power grid is three-phase 380V, and some refrigeration compressors are three-phase 220V. The voltage does not match and the equipment cannot run. Whether to configure the reference equipment nameplate.
Non-inverter, only 380V to 220V voltage conversion is realized, the frequency is not changed, and there is no backup power supply. Inverter power supply is required for inverter conversion.
Dry type oil-free + H-grade insulation + IP23 protection, suitable for environments with -20℃~70℃ and humidity≤95%, the actual effect is affected by the installation and ventilation.
According to the selection of equipment power and start–up characteristics, 5kVA-5000kVA can be customized; the factory will send it directly in 7 days at the fastest, and a technical plan can be issued by providing equipment parameters.
