Exporting of printing equipment is an acceptance of a simple fact: the grid is different everywhere. In North America, the supply is 480V/60Hz, while much of Europe is at 400V/50Hz. The quality of supply, in terms of voltage and frequency, varies considerably from one country to another. Apply a 380V/50Hz machine to the wrong supply and you‘ll have an unstable motor speed, registration problems, vibration and a broken down press – usually at the absolutely wrong moment.
A variable frequency power supply that we design and manufacture can eliminate that risk. JINMA‘s 220V up to 380 V power supply units will take any input between 220V and 500 V and convert it to a precisely regulated, stable output of 380 V±1% with a faithfully reproduced 60 Hz-to- 50Hz conversion. Your printing machines will perform exactly as intended, no matter where in the world.
| Parameter | Value |
| Conversion technology | AC-DC-AC (rectification, inversion, filtering) |
| Input voltage | 220V–500V |
| Output voltage | 380V ±1% (accuracy class 0.5) |
| Output voltage range | 376.2V–383.8V |
| Frequency conversion | 60Hz → 50Hz via SPWM, deviation ≤ ±0.1Hz |
| Phase synchronization | PLL (phase-locked loop) |
| Control system | 32-bit DSP, response time 50ms |
| Grid fluctuation tolerance | ±15% input; response within 100ms |
| Conversion efficiency | 98% |
| No-load loss | Reduced by 68% |
| Overload capacity | 300% for 10 seconds |
| Insulation class | H (180°C) |
| Enclosure protection | IP54 (IP65 optional) |
| Ambient temperature | -20°C to 50°C |
| Heat dissipation | Corrugated oil tank, +35% area, temp rise ≤60K |
| Power range | 10kVA–2,000kVA |
| Certifications | UL (UL 5085), CE, PSE; SASO / AS/NZS on request |
No two export projects are identical, and JINMA designs accordingly:
JINMA custom variable frequency power supplies are built on AC-DC-AC conversion technology: rectification, inversion, and filtering work in sequence to convert voltage and frequency in a single unit.
Precision voltage conversion as the foundation. Multi-tap windings and digital voltage regulation give an input range of 220V–500V, comfortably covering grid fluctuations worldwide. Output is regulated to 380V±1% with accuracy class 0.5 — well inside the ±2% industry standard.
Precision frequency conversion as the technical core. SPWM converts 60Hz to 50Hz with frequency deviation held within ±0.1Hz. PLL keeps the output phase-synchronized with the input, preventing equipment vibration and noise.
An intelligent control system as the brain. A built-in 32-bit DSP monitors voltage, current, and frequency in real time and responds in as little as 50 milliseconds. When the grid fluctuates by ±15%, the output is adjusted instantly to keep equipment running smoothly.
Heat dissipation design built for reliability. Class H insulation (rated 180°C), IP54 protection, and operation from -20°C to 50°C ambient. The corrugated oil tank increases heat dissipation area by 35%, keeping full-load temperature rise at or below 60K.
JINMA variable frequency power supplies have been powering solutions for more than 500 industries and facilities worldwide. Traveling from Chilean mines to precision textile factories in Germany; American auto plants to Japanese photovoltaic manufacturing plants.
Printing equipment. High-precision presses run on stable 380V/50Hz power with registration accuracy held within ±0.1mm. Customers report a 3% reduction in waste rate, and a large printing plant saves more than ¥500,000 a year in power-related costs.
UV printers exported to North America. A UL-certified 480V-to-380V transformer solves the voltage mismatch when UV printers enter the US and Canadian market. Equipment runs stably with 40% fewer faults and measurably higher customer satisfaction.
Industrial robotics. Robots draw heavy startup current. The power supply supports 300% instantaneous overload for 10 seconds, letting production lines start smoothly and raising startup success from 60% to 100%.
Renewable energy testing. Photovoltaic inverter test platforms use the frequency converter to simulate the grid conditions of different countries, accelerating product certification. Even during lightning storms, the equipment keeps running stably.
Yes. SPWM technology converts 60Hz input to 50Hz output with deviation held within ±0.1Hz, while PLL keeps phase synchronization so motors run smoothly without vibration.
The input range is 220V–500V, covering most grids worldwide, including 480V systems in North America. Output is regulated to 380V±1% regardless of input fluctuation.
Standard certifications include UL (UL 5085) for North America, CE (EMC + LVD) for the EU, and PSE for Japan. SASO and AS/NZS versions can be provided for Saudi Arabia and Australia.
Yes. Power ranges from 10kVA to 2,000kVA, with voltage, frequency, enclosure, and protection level customized. IP65 and corrosion-resistant versions are available for harsh environments.
