IEC 61215-1:2016

Overview

IEC 61215-1:2016 is an international standard developed by the International Electrotechnical Commission (IEC) that sets forth the design qualification and type approval test requirements for terrestrial photovoltaic (PV) modules. This standard applies to flat-plate terrestrial PV modules including crystalline silicon and thin-film technologies, designed for durable operation in general open-air climates as defined by IEC 60721-2-1. The document establishes test sequences aimed at validating electrical and thermal characteristics, ensuring modules can endure prolonged environmental exposure while maintaining performance.

This standard forms the first part of a series: Part 1 defines general requirements, while Part 2 covers detailed test procedures. It represents a significant revision from the 2005 edition, aligning with newer IEC structural approaches and updating test definitions to Module Quality Tests (MQTs).

Key Topics

• Scope and Applicability: IEC 61215-1:2016 applies broadly to all terrestrial flat-plate PV modules, including both crystalline and thin-film types. It excludes high-concentration photovoltaic modules but allows use for low-concentrator modules (1 to 3 suns) with tests adjusted accordingly.

• Design Qualification Objectives: The standard aims to certify modules for long-term outdoor functionality by evaluating their electrical output and thermal stability under accelerated aging and climatic stress, with the objective of ensuring reliability over the module’s operational lifespan.

• Test Structure and Pass Criteria:

  • Divided into two main "gates" for performance verification:
    • Gate No. 1 confirms initial module power output at Standard Test Conditions (STC) against nameplate ratings.
    • Gate No. 2 assesses maximum power degradation after accelerated aging tests.
  • Additional checks cover electrical circuitry integrity, visual defects, and electrical safety requirements.

• Marking and Documentation: Requirements for clear nameplate marking and comprehensive documentation (including assembly instructions) are specified to ensure traceability and proper use.

• Sampling Procedures: Updated sampling methods define how test samples are selected for design qualification to maintain consistency and representativeness.

• Terminology and Temperature Metrics: Introduces the use of Nominal Module Operating Temperature (NMOT) for temperature assessments, replacing NOCT, with reference to IEC 61853-2 for relevant procedures.

• Standard Integration: The document incorporates references to related standards such as IEC 60891 for temperature and irradiance corrections, IEC 60904 series for PV device measurements, and IEC 61730-2 for safety testing.

Applications

• Quality Assurance for PV Manufacturers: IEC 61215-1:2016 provides a framework for manufacturers to validate module designs prior to market release, ensuring compliance with international durability and performance standards.

• Certification and Type Approval: Certification bodies use this standard to perform design qualification testing and grant approvals needed for modules to enter global markets.

• Product Development and Testing Labs: R&D teams and testing laboratories implement this standard to evaluate prototype modules, characterize performance under environmental stress, and verify adherence to technical requirements.

• System Designers and Installers: Ensures that selected PV modules have undergone rigorous quality scrutiny, supporting system reliability and long-term energy yield in general outdoor environments.

• Regulatory Compliance: Supports regulatory frameworks mandating certified photovoltaic components, enhancing consumer confidence and system safety.

Related Standards

• IEC 61215-2: Specifies the detailed test procedures corresponding to IEC 61215-1 requirements, focusing on the execution of module quality tests.

• IEC 61730-2: Addresses photovoltaic module safety qualification, complementing design qualification with safety evaluations.

• IEC 60891: Describes procedures for temperature and irradiance corrections applied in I–V characteristic measurement.

• IEC 60904 Series: Covers measurement methodologies for photovoltaic devices including current-voltage characterization and spectral irradiance standards.

• IEC 61853-1 & IEC 61853-2: Relate to performance testing and energy rating of PV modules, with specific reference to operating temperature measurements used in IEC 61215-1.

• IEC 60721-2-1: Defines environmental conditions (climate classes) for long-term outdoor exposure relevant to terrestrial PV module qualification.

By adhering to IEC 61215-1:2016 standards, manufacturers and stakeholders ensure photovoltaic modules are rigorously tested for extended durability and reliable performance in typical global climates, fostering consistent quality and accelerating deployment of solar energy solutions worldwide.