Zhejiang Sowell Electric Co., Ltd. has recently obtained the IECEE-CB system testing certificate issued by TÜV SÜD for its photovoltaic system cables, marking another step in aligning cable products with international photovoltaic safety requirements.
As solar power installations continue expanding worldwide, the technical requirements for photovoltaic components are becoming more detailed. Cables, as a key connection element between modules, inverters, batteries, and other electrical equipment, need to maintain stable performance under long-term outdoor operation. Certification systems such as IECEE-CB provide a common evaluation framework to support consistency in electrical safety testing across different markets.
The IECEE-CB system is an international mutual recognition framework established under the International Electrotechnical Commission (IEC). Test reports and certificates issued within this system can be used by participating countries and regions as a reference for local certification processes.
Compared with repeating complete testing procedures for different market requirements, the CB system helps simplify certification processes by allowing test results to be recognized through national certification bodies. This approach can reduce duplicated testing work and improve efficiency when photovoltaic products enter different regulatory environments.
The certificate obtained from TÜV SÜD covers SOWELLSOLAR photovoltaic system cables, reflecting compliance with relevant international testing requirements.
Photovoltaic cables are different from conventional electrical cables because they are designed for continuous outdoor exposure. Solar installations often operate for many years under direct sunlight, temperature changes, humidity, and other environmental influences.
The certified products are based on the requirements of IEC62930:2017, an international standard specifically developed for photovoltaic cables. The standard addresses important performance areas including:
| Technical Requirement | Purpose in Photovoltaic Applications |
|---|---|
| UV resistance | Helps cables maintain insulation performance under long-term sunlight exposure |
| Weather resistance | Supports operation in changing outdoor environments |
| Temperature resistance | Allows stable performance under temperature fluctuations |
| Halogen-free low smoke characteristics | Reduces harmful smoke emission during fire conditions |
| Electrical safety performance | Supports reliable energy transmission in PV systems |
These requirements reflect the increasing focus on safety and durability throughout the lifecycle of photovoltaic power systems.
The certified photovoltaic cables feature a DC 1.5kV voltage rating, which corresponds with many current solar module and string inverter system configurations.
As photovoltaic projects move toward higher power generation capacity, electrical components must support higher system efficiency while maintaining safe operating conditions. Appropriate voltage ratings, conductor design, and insulation performance are becoming important considerations in cable selection.
The product range covers conductor sizes from 1.5mm² to 35mm², allowing applications from individual module connections to higher-power cable requirements within photovoltaic systems.
The development of photovoltaic cable technology is closely connected with the changing needs of solar power safety management. In addition to electrical conductivity, modern cable designs increasingly consider fire safety, environmental protection, and long-term reliability.
Halogen-free low smoke materials are one example of this development direction. In the event of fire, these materials are designed to reduce the release of toxic gases and dense smoke, supporting safer maintenance and emergency conditions in photovoltaic installations.
Founded in 2006, Zhejiang Sowell Electric Co., Ltd. has been involved in photovoltaic cable development and certification activities for many years. The company’s product range includes H1Z2Z2-K, PV1-F, PV2000DC, TCA, SSPV-00X series photovoltaic cables, PV connectors, and junction boxes.
With production facilities located in Huzhou and Ningbo, China, the company operates 11 production lines across approximately 50,616 square meters of production area. The certification progress reflects the company’s continued focus on adapting photovoltaic cable production to international standards and industry requirements.
The TÜV SÜD IECEE-CB certification for SOWELLSOLAR photovoltaic system cables highlights the ongoing evolution of photovoltaic cable technology, where IEC62930:2017 compliance, DC 1.5kV application, halogen-free low smoke materials, and a wide conductor range contribute to safer and more standardized solar power infrastructure.
