Achieving New Heights in Global Expansion with 35 Years of Excellence in Power Testing

For over 35 years, Preen has been a leader in the power testing industry, consistently advancing technology to uphold the highest standards of precision and reliability. Focused on meeting customer needs, we offer a broad spectrum of testing solutions tailored to diverse applications.

This year, Preen has made significant strides in raising our global market visibility. At Munich Electronica India 2024, we successfully showcased our new testing systems and established strong partnerships within the local industry. Additionally, to be more in tune with the Japanese market, we have set up a new service location in Japan, ensuring faster and more professional customer support.

With an eye on the future, Preen will continue to expand our global reach, strengthening our presence in regional markets to provide even higher-quality products and services to customers worldwide. We believe that through close collaboration with our customers, we can jointly drive the development of the power testing industry.

Below is the 2024 overview of Preen's applications, which we hope will inspire and bring greater benefits to your projects:

Brand New Low Voltage ADG-L Series: Efficient and Versatile

To address the demands of the automotive, industrial automation, and renewable energy sectors, the low-voltage model of the ADG-L series programmable DC power supply has been launched, extending to a wider range of output voltage from 30V, 40V, to 80V. This series features rapid transient response and low ripple characteristics, making it suitable for LV 148 testing of automotive electronic components.

Military-Grade EMC Testing Solutions: High-Purity Power to Protect Defense Equipment

EMC testing for military electronic devices ensures their stable operation in complex electromagnetic environments. The AFV+ series high-power programmable AC power supplies are specifically designed for military EMC testing, delivering ultra-pure power with waveform distortion as low as 0.5%.

This product supports tests like CE101 and CE102, offering continuously adjustable output frequencies from 300Hz to 840Hz, meeting international standards such as RTCA/DO-160. It is suitable for testing ships, aircraft, and land-based equipment. Beyond military applications, it excels in civilian EMC testing as well. AFV+ series’ outstanding waveform purity and voltage regulation precision have made it the go-to choice for renowned certification bureaus such as UL and TUV.

Auxiliary Converter Testing Solutions: Enhancing Railway Transport Reliability

Auxiliary converters are core components of modern railway systems, with increasingly demanding testing requirements. The ADG-L series programmable DC power supply supports testing projects in compliance with GB/T 34575-2023, simulating rigorous power supply conditions to ensure the device under test operates stably under voltage fluctuations of +15%, +25%, and ±40%.

This series features wide-range output and series-parallel modes, facilitating tests of internal converter components such as control interface units, fuses, and contactors. Additionally, with its overload capacity and high-precision voltage regulation, the APH series non-contact stabilized power supply provides reliable support for railway applications. 。

EV Charging Gun Testing: An Integrated Solution for Safety and Efficiency

As the prevalence of electronic vehicles (EVs) in the market steadily increases, the expansion of charging infrastructure and the continuous advancement of charging technology have become focal points of widespread interest. Multiple charging standards are available in the market, including SAE J1772, GB/T 20234, IEC 62196, and CHAdeMO. Preen’s EV Charging Connector Test System offers a comprehensive and efficient solution to meet various standards.

It integrates the ADG+ high-power programmable DC power supply, a high-precision temperature inspection device, and the intuitive Preen Program remote operation software. It enables simultaneous testing for up to 30 DC charging guns. Through real-time temperature monitoring and automated protection mechanisms, the system provides precise insights into the thermal performance of each charging gun component. This ensures swift responses to abnormalities, significantly enhancing product reliability and durability, while helping customers accelerate time-to-market.

Vision for the Future

In 2025, Preen Electronics will remain committed to innovation and customer-centric solutions, delivering the most accurate and reliable power testing systems. We sincerely thank you for your continued support and look forward to tackling more challenges and seizing new opportunities together.

Wishing you a Happy New Year and great success in all your endeavors!