20kVA AC Static Frequency Converter Power Supply for PVD Vacuum Coating Equipment Exported to the USA
WINZPOWER supplied 11 units of the WVFP-33020 AC Static Frequency Converter Power Supply for PVD vacuum coating equipment manufactured by Penta Technology (Suzhou) Co., Ltd. and exported to the United States. Each unit is rated at 20kVA and converts the project’s nominal 480V / 60Hz grid supply to the 380V / 50Hz supply required by the coating equipment.
Project Overview
| Item | Details |
|---|---|
| Customer | Penta Technology (Suzhou) Co., Ltd. |
| Equipment Application | PVD Vacuum Coating Equipment |
| Destination | United States |
| Quantity | 11 Units |
Customer Background
Penta Technology (Suzhou) Co., Ltd. is a Singapore-invested high-tech enterprise based in Suzhou, China. The company’s activities include vacuum coating equipment, PVD coating systems, microelectronics equipment and Parylene nano coating technology.
Power Compatibility: 380V 50Hz Equipment on a 480V 60Hz Grid
The PVD vacuum coating equipment was designed for a 380V / 50Hz power supply. For export to the United States, it needed to be compatible with the project’s 480V / 60Hz grid supply. Both voltage and frequency differed from the equipment’s original power requirements.
A power conversion stage was therefore required between the grid and the coating equipment to provide 380V / 50Hz.
AC Static Frequency Converter Solution
For this application, WINZPOWER supplied 11 units of the WVFP-33020 AC Static Frequency Converter Power Supply.
480V / 60Hz AC Input → WVFP-33020 AC Static Frequency Converter Power Supply → 380V / 50Hz AC Output
The unit uses AC-DC-AC conversion: the incoming AC supply is converted to DC, then converted back to AC at the required output voltage and frequency.
Project Technical Summary
| Item | Specification |
|---|---|
| Equipment | WVFP-33020 AC Static Frequency Converter Power Supply |
| Quantity | 11 Units |
| Rated Capacity | 20kVA per unit |
| Input | 480V ±20%, 60Hz |
| Output | 380V, 50Hz |
| Connection | Input: 3 phase 3 wire + ground / Output: 3 phase 4 wire + ground |
| Conversion Type | AC-DC-AC Conversion |
Manufacturing and Assembly
WINZPOWER manufactured, assembled and wired all 11 WVFP-33020 units at its factory to the same project configuration.
Wiring and internal connections were inspected during assembly before the units moved on to factory testing.
Factory Testing and Verification
Input Voltage Range Verification
Factory testing covered the nominal input condition and the lower and upper input voltage conditions associated with the 480V ±20% input rating.
Low Input Test
≈384V / 60Hz
↓ Output: ≈381.2V line-to-line / 50Hz.
Rated Input Test
≈480V / 60Hz
↓ Output: ≈381.2V line-to-line / 50Hz.
High Input Test
≈576V / 60Hz
↓ Output: ≈381.2V line-to-line / 50Hz.
The low, rated and high input voltage test photographs each show an output of approximately 381.2V line-to-line at 50Hz, indicating consistent output readings across the tested input conditions. The approximately 220V readings are line-to-neutral values; the specified 380V output refers to line-to-line voltage.
Manual Voltage and Frequency Verification
Input voltage and frequency were also checked with a handheld meter at the input terminals.
Input Voltage Verification
Input Frequency Verification
Aging Test Before Shipment
The batch underwent power-on aging testing before final inspection and shipment.
Export Packaging and Delivery
After testing, the 11 units completed final inspection and were prepared for shipment for the PVD vacuum coating equipment export project to the United States.
Project Highlights
International Equipment Power Compatibility
The project required a 380V / 50Hz supply for Penta Technology’s PVD vacuum coating equipment exported to the United States, where the intended grid supply was 480V / 60Hz.
480V 60Hz to 380V 50Hz Conversion
The WVFP-33020 uses AC-DC-AC conversion to provide the equipment’s required voltage and frequency.
Batch Manufacturing and Inspection
The project covered 11 units with the same 20kVA rating and input/output specifications, followed by factory testing, power-on aging testing and final inspection before shipment.
Related Product
WVFP Series AC Static Frequency Converter Power Supply
Related Solution
Frequency Conversion Solutions for Industrial Equipment
Related Case
Where this project uses the WVFP static frequency converter to match a fixed overseas supply, the related case study shows the same AC-DC-AC conversion technology used as an adjustable test power source. A 30kVA WVFP-33030KVA three-phase unit is installed at the customer’s test station, where output voltage (0-260V low range / 261-520V high range) and output frequency (50Hz / 60Hz) are set on the touchscreen, so exported bakery and commercial kitchen equipment can be tested under the supply conditions of different target markets (208V / 60Hz in that project).
