Photovoltaic product certification is a crucial step in ensuring quality, safety, and performance, and it is also a necessary condition for entering the international market
1. International mainstream certifications and standards
Certification type Applicable market Core standards Main testing content Importance
CE certification, EU, IEC 61215/61730, electrical safety, EMC, RoHS, mandatory, market access
UL Certification  North America  UL 1703 (Components)  Fire Resistance, Electrical Insulation, Mechanical Strength  Mandatory, Market Access
TUV certification  European / Global  IEC/EN standards  Safety, reliability, performance  Recommended, enhance competitiveness
MCS certification, UK, British standards, system performance, installation specifications, mandatory, subsidy acquisition
CEC certification  Australia  AS/NZS standards  Safety, energy efficiency ratio  Mandatory, market access
Other regional certifications: Middle East / Latin America, etc. Local standards: Adapting to regional special requirements. Necessary for regional access
2. Detailed explanation of component certification (taking UL 1703 as an example)
Safety testing:
Fire Test: Class A (highest), flame spread ≤1.5m, suitable for roof installation
Electrical insulation: insulation resistance ≥100MΩ, electrical clearance ≥3.2mm, to prevent arcing
Mechanical loading: Wind pressure resistance (5400Pa) and snow pressure resistance (2400Pa) tests to ensure safety in extreme weather conditions
Environmental testing:
Salt spray corrosion: Simulate marine environment, test corrosion resistance, lasting for 1000 hours
Damp heat test: Test stability under an environment of 85℃/85% RH for 1000 hours
UV aging: Simulate long-term exposure to sunlight to test the durability of materials
Performance test:
Power attenuation: Test the power change between initial and after 1000 hours under standard conditions, with high-quality components showing a change of ≤2%
Potential Induced Degradation (PID): Testing performance stability under high voltage, N-type batteries exhibit better resistance to PID
3. Key points of inverter certification
Safety standards: UL 62109 (North America), IEC 62109 (International), tested for overvoltage, overcurrent, and short circuit protection
Grid connection standard:
Islanding protection: During a power outage in the grid, power supply to the grid must be stopped within 200ms to prevent safety accidents
Frequency/Voltage Adaptation: Capable of adapting to grid fluctuations, actively protecting and reporting in case of anomalies
EMC certification: compliant with CISPR 22 standard, preventing interference with power grids and other devices
4. Certification of stent system
UL 2703 Standard: Special certification for photovoltaic mounting systems, testing structural strength, durability, and grounding performance
Wind/snow load certification: Test the stability of the bracket under extreme weather conditions based on local meteorological conditions
Material certification: The thickness of the hot-dip galvanized layer is ≥85μm, ensuring a service life of over 25 years
Certification value: Obtaining authoritative certification is not only a necessary condition for market entry, but also enhances product premium (approximately 5%-15%), reduces after-sales risks, and enhances customer trust. Especially in mature markets such as Europe and the United States, uncertified products are almost impossible to enter mainstream projects