IEC 62108:2007

Overview

IEC 62108:2007 is an international standard developed by the International Electrotechnical Commission (IEC) specifically for concentrator photovoltaic (CPV) modules and assemblies. This standard defines the minimum requirements for design qualification and type approval to ensure CPV products are suitable for long-term operation in various general open-air climates. The testing procedures established within IEC 62108 evaluate electrical, mechanical, and thermal durability to ensure CPV modules and assemblies can withstand prolonged exposure to environmental stressors. The tests are partly based on requirements found in IEC 61215, the standard for traditional flat-plate photovoltaic modules, but tailored to the unique characteristics of CPV technologies.

Key Topics

• Design Qualification
  IEC 62108 specifies comprehensive design qualification tests that verify CPV modules’ durability and long-term performance. These tests assess resistance to environmental factors such as thermal cycling, damp heat, humidity freeze, and ultraviolet exposure.

• Type Approval
  The standard outlines type approval criteria ensuring CPV modules and assemblies meet performance and safety benchmarks before entering the market. Approval validates conformity with IEC requirements and promotes international market acceptance.

• Test Procedures
  Detailed test methodologies are addressed, including:

  • Visual Inspection for identifying major defects
  • Electrical Performance Measurement through outdoor and simulated I-V (current-voltage) characteristics
  • Mechanical Load Testing to confirm structural integrity under wind and snow loads
  • Thermal Cycling and Damp Heat Tests to simulate extreme temperature and humidity conditions
  • Hail Impact and Water Spray Testing for physical resistance assessment
  • Ground Path Continuity and Electrical Insulation Tests to verify safety compliance

• Pass Criteria and Reporting
  IEC 62108 defines clear pass/fail criteria for each test to ensure consistent assessment. Test reports document results, modifications, and any relevant observations, providing transparency and traceability.

Applications

IEC 62108:2007 is essential for manufacturers, testing laboratories, certification bodies, and purchasers involved in the CPV industry. Its applications include:

• Product Development
  Manufacturers leverage IEC 62108 during the design phase to ensure their CPV modules and assemblies meet durability and performance standards before mass production.

• Certification and Quality Assurance
  Independent testing laboratories use the standard’s test sequences to provide credible type approval certificates, which can be prerequisites for regulatory approvals or financial incentives.

• Procurement Specifications
  Project developers and investors reference IEC 62108 compliance to specify and procure reliable CPV systems capable of sustained outdoor performance.

• Market Harmonization
  Adoption of this standard promotes harmonization of quality and safety benchmarks internationally, facilitating cross-border trade and industry growth.

Related Standards

• IEC 61215 – Design qualification and type approval for terrestrial photovoltaic (PV) modules (flat-plate)
• IEC 61730 – Photovoltaic module safety qualification
• IEC 60904 – Photovoltaic device measurement methods
• ISO 14001 – Environmental management standards relevant to sustainable CPV manufacturing practices

Keywords

Concentrator photovoltaic (CPV), CPV modules, CPV assemblies, IEC 62108, design qualification, type approval, photovoltaic standard, solar power module testing, electrical performance, mechanical reliability, thermal durability, environmental testing, renewable energy standards, photovoltaic module certification, international photovoltaic standards.

Utilizing IEC 62108 ensures that concentrator photovoltaic technology meets rigorous international protocols, which guarantees sustained energy production, durable field operation, and enhanced safety in diverse climatic conditions. This standard remains a critical foundation for advancing CPV innovation and market acceptance worldwide.