A variable frequency power supply is not simply a transformer. It takes in AC power and transforms it to become a controlled output whose voltage and frequency may be set to the load‘s requirements, rather than be set by the supply.
Jinma unit synchronize DSP with SPWM(high frequency switch)using high frequency switches. With this combination, the generated power can keep voltage stability in ± 1% as well as frequency stability in ± 0.01Hz. In a view of design condition, supply a 380V/50Hz production line with power of exactly the same voltage and frequency even the grid behind it is 440V/60Hz.
Protection is included as standard. Overcurrent, overvoltage, undervoltage, overtemperature protection circuits watch the unit constantly, providing protection for the power supply and the equipment utilizing it.
| Parameter | Specification |
| Input voltage | 440V (some regions at 460V/60Hz; tolerates ±10% grid fluctuation) |
| Output voltage | 0-520V adjustable, accuracy ±1% |
| Output frequency | 40-70Hz; bidirectional 50/60Hz conversion |
| Voltage stability | ±1% |
| Frequency stability | ±0.01Hz |
| Capacity range | 10kVA – 1000kVA |
| Control technology | DSP + SPWM high-frequency modulation |
| Protections | Overcurrent, overvoltage, undervoltage, overtemperature |
| Enclosure rating | IP20 – IP54 (by configuration) |
| Transformer options | Autotransformer or isolation type |
| Certifications | NOM (NOM-019-SCFI-2015), CE |
| Warranty | 2 years + lifetime maintenance service |
| Standard lead time | 7-15 days for standard models |
The input stage is designed around Mexico’s grid characteristics. The unit accepts 440V input, the mainstream industrial voltage standard in Mexico (some regions operate at 460V/60Hz), and tolerates grid fluctuations within ±10% without losing output stability.
On the output side, voltage is adjustable across 0-520V with ±1% accuracy. A single range therefore covers the voltages that most buyers in Mexico actually need:
Frequency flexibility matters just as much. The unit converts bidirectionally between 50Hz and 60Hz and covers a wide 40-70Hz output range, so it can also drive motors, pumps and other equipment that require non-standard operating frequencies.
Three application patterns dominate in the Mexican market:
For exporters, the benefit is practical: one adjustable unit replaces the need for site-specific transformers and frequency converters, so a single product line can serve projects across different Mexican states, grid conditions and equipment types.
The unit can be supplied in two transformer configurations, and the choice depends on the load:
Autotransformer type: suitable for ordinary industrial equipment such as motors, pumps and production machinery; generally more compact and economical.
Isolation type: provides galvanic isolation between input and output, which is preferred for medical imaging devices, precision instruments and other sensitive electronics that need protection from grid interference.
Both arrangements can be tuned to the load over the 10kVA to 1000kVA range, and enclosure ratings from IP20 to IP54 can be specified to match the environment.
In uncertain situations, the manufacturer can recommend the correct type, considering the connected equipment and the ability of that equipment to handle electrical noise, so that the buyers aren‘t required to learn everything about power quality.
Yes. The unit accepts 440V input, tolerates grid fluctuations within ±10%, and delivers adjustable 0-520V output with bidirectional 50/60Hz conversion, so 380V/50Hz equipment can be supplied with exactly the power it was designed for.
The autotransformer type suits ordinary industrial equipment and is generally more economical. The isolation type provides galvanic isolation between input and output, making it the preferred choice for medical and precision instruments sensitive to grid interference.
The unit is available from 10kVA to 1000kVA. Sizing depends on the total connected load and its operating pattern; send the manufacturer your equipment list to confirm the right rating.
