#China #Energy Storage #Hefei #Sungrow PowerKeeper #UL 9540A

Sungrow's PowerKeeper Achieves Unprecedented Triple UL 9540A Certification

In the world of commercial and industrial energy storage, safety has always been a priority, and Sungrow's latest achievement has taken this concern to new heights. The PowerKeeper energy storage system has recently completed a comprehensive series of thermal runaway tests as per the stringent UL 9540A standard, becoming the first modular DC-coupled C&I energy storage solution to receive a triple certification for cell, module, and unit-level testing. This groundbreaking accomplishment, witnessed by TÜV Rheinland, is significant in establishing a new safety benchmark for energy storage in environments densely populated with people and assets, such as shopping malls, office buildings, hotels, and factories.

A New Level of Energy Storage Safety

The safety dynamics in high-density spaces require more than just basic compliance; they necessitate robust systems capable of preventing risks before they escalate. Traditional industry practices typically focus on single-layer testing for either cell-level or module-level safety performance, which often leaves gaps in overall risk management. Sungrow’s PowerKeeper addresses these deficiencies through a thoroughly integrated approach that validates safety across three essential levels:

1. Cell-Level Testing: Focuses on identifying critical parameters that indicate thermal runaway threats.
2. Module-Level Testing: Verifies that any thermal runaway occurring within a module can be contained effectively.
3. Unit-Level Testing: Ensures that thermal isolation is maintained between adjoining cabinets and surrounding structures, thereby protecting overall system integrity.

This strategic methodology allows PowerKeeper to maintain functionality and safety even when facing extreme operational conditions.

Real-World Testing Simulations

Sungrow has engineered the certification testing to reflect real-world installation constraints, recognizing that commercial spaces often necessitate close proximity installations. For instance, the system is effective even with just 25 mm clearances from walls and a mere 450 mm separation between units. In these tests, PowerKeeper showcased its remarkable containment skills:

• - Extensive Temperature Management: The highest temperature recorded in a triggered cell was 595.2°C; however, neighboring units mere feet away only peaked at 13.7°C, significantly below the UL 9540A threshold of 141.3°C.
• - Minimal Wall Impact: With merely 25 mm clearance, the wall temperature increase was just 29°C, far exceeding safety limits set at 97°C.

In module-level tests where thermal runaway was intentionally induced in multiple cells, there were no incidents of combustion or explosion, showcasing the system’s ability to strictly contain potential hazards.

Advanced Safety Features

Beyond the accomplished passive protection of UL 9540A certification, Sungrow has integrated intelligent safety measures that underscore its commitment to everyday operational safety. The PowerKeeper incorporates:

• - Five-Dimensional Alerts: Real-time monitoring of current, voltage, smoke, stack temperature, and water immersion ensures proactive risk management.
• - Triple-Guard Protection: This feature spans across cell, pack, and plant levels, providing a comprehensive safety framework.

These components form a holistic approach to energy safety, enabling early detection of risks and swift interventions as needed.

A Commitment to Safer Energy Solutions

The successful achievement of triple UL 9540A certification by PowerKeeper not only affirms its exceptional safety performance but also marks a substantial leap forward for global standards in commercial energy storage solutions. With rising demand for reliable energy storage systems, Sungrow is at the forefront, offering intelligent solutions that empower businesses to transition towards sustainable energy use securely and reliably.

About Sungrow

As a pioneer in renewable energy technology, Sungrow has been a leading provider for over 29 years, having installed more than 1000 GW of power electronic converters globally. The company's innovations, coupled with a vast service network, position it as a trusted name in the industry, committed to advancing towards a sustainable future through cutting-edge technology. For more information, visit Sungrow's website.