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Sungrow PowerKeeper Achieves Groundbreaking Triple UL 9540A Certification

In a remarkable achievement for safety in energy storage, Sungrow's PowerKeeper, specifically designed for commercial and industrial (C&I) applications, has become the first energy storage system to receive triple certification under the UL 9540A standard. This milestone was validated through rigorous testing conducted by TÜV Rheinland, demonstrating PowerKeeper's ability to manage thermal runaway across three critical system levels: cell, module, and unit.

An Industry First in Modular Design

The PowerKeeper system's unique design targets high-density installation environments, such as shopping malls and office buildings, where safety is paramount due to the proximity of people and valuable equipment. Traditional energy storage safety testing has generally focused on just one layer, such as cell or module-level assessments. However, this limited approach fails to comprehensively evaluate how well the various safety barriers work together to prevent risks.

Experiencing thermal runaway in any part of the system can have serious implications, which is why Sungrow's approach, encompassing a multi-tiered evaluation of safety measures, stands out. The newly implemented cell-module-unit validation chain ensures that safeguards are effective throughout the entire system.

Detailed Safety Validation Process

To assure safety under extreme conditions, PowerKeeper's validation process includes:

1. Cell-Level Testing: This involves analyzing key thermal runaway metrics from individual cells to understand their vulnerabilities.
2. Module-Level Testing: This stage checks the design functionality of modules to contain thermal runaway scenarios.
3. Unit-Level Testing: This crucial phase assesses the thermal isolation capacities between multiple battery cabinets and their surroundings.

The triple certification offers substantial assurances that the PowerKeeper system can withstand harsh operations and maintain integrity even in the most demanding conditions.

Real-World Application and Space Efficiency

In commercial installations where spatial constraints are a reality, PowerKeeper has been designed for efficient space use. It can be installed as close as 25 mm from walls with just 450 mm between units, ensuring great adaptability to varied site conditions. Remarkably, during unit-level testing, a triggered cell reached a peak temperature of 595.2°C, yet the adjacent unit's surface temperature remained below the critical threshold of 13.7°C, demonstrating superior containment ability.

Moreover, in module-level assessments with controlled thermal runaway scenarios, PowerKeeper succeeded in maintaining safety without any combustion, explosion, or release of hazardous materials, validating its reliable containment of threats.

Advanced Safety Mechanisms

In addition to its passive safety certifications, Sungrow has incorporated a suite of active safety features into PowerKeeper. These include:

• - 5D Alerts: Monitoring systems that track current, voltage, smoke, temperature, and water immersion to provide continuous oversight.
• - Triple-Guard Protection: Stringent protection mechanisms that safeguard operation across cell, pack, and plant levels.

Together, these features create a robust proactive safety framework, enabling swift responses to emerging risks in everyday operation.

Establishing New Safety Standards

The comprehensive testing and resultant triple UL 9540A certification position PowerKeeper as a frontrunner in the commercial and industrial energy storage sector. This successful validation not just endorses the safety of the system but also elevates the global safety standards applicable to energy storage technologies.

With an increasing demand for safe, reliable energy storage solutions worldwide, Sungrow remains at the forefront of innovation in the sector, committed to facilitating businesses’ transition to sustainable energy solutions confidently.

About Sungrow

Sungrow has been a leader in the renewable energy sector for over 29 years and has successfully installed over 1,000 GW of power electronics globally. The company is noted for its innovations in PV inverters and energy storage solutions, recognized as the most bankable provider in the industry according to BloombergNEF. Sungrow's commitment to cutting-edge technology and exemplary service is driving the global energy transition towards sustainability efficiently and effectively.