EN IEC 62817 Photovoltaic Systems - Design Qualification of Solar Trackers

The standard "EN IEC 62817 Photovoltaic systems - Design qualification of solar trackers," based on a European standard and subsequently published by the International Electrotechnical Commission (IEC), is a design qualification standard applicable to solar trackers for photovoltaic systems, but can also be used for trackers in other solar applications. This standard describes test procedures for both the basic components and the complete tracker system.

In some cases, test procedures describe methods for measuring or calculating parameters to be reported in the defined tracer specification sheet. In other cases, the test procedure results in a pass/fail criterion. The purpose of this design qualification standard is twofold:

• First, this standard ensures that the parameters reported in the specification sheet are measured by consistent, industry-accepted procedures for the tracker in question. This provides customers with a solid basis for comparing and selecting a tracker suitable for their specific needs. This standard provides industry-wide definitions and parameters for solar trackers. Every vendor can design, build, and specify functionality and accuracy with a uniform definition. This ensures consistency in determining purchasing requirements, comparing products from different vendors, and verifying product quality.
• Second, pass/fail tests are designed to distinguish tracker designs that are likely to fail prematurely from those that are robust and suitable for use as specified by the manufacturer. The mechanical and environmental tests in this standard are designed to measure the tracker's ability to perform under varying operating conditions and to survive extreme conditions. Mechanical tests are not intended to certify structural and foundation designs because such certifications are specific to local jurisdictions, soil types, and other local requirements.

EN IEC 62817 is a European standard focusing on the design, construction, installation, and testing of photovoltaic (PV) mounting systems. These systems are essential components of solar power plants, providing the infrastructure that supports solar panels. This standard specifies requirements for mechanical stability, material selection, and installation methods to ensure reliable and safe operation of PV mounting systems throughout their lifespan.

This standard is designed to ensure that photovoltaic systems operate efficiently even in harsh environmental conditions, while complying with safety regulations to protect both individuals and infrastructure.

The primary objective of this standard is to ensure the mechanical durability, reliability, and performance of PV tracking systems under real-world operating conditions. This helps manufacturers, project developers, and investors assess the quality and long-term viability of tracking systems used in solar power installations.

The scope of this standard covers a wide range of provisions, from design and testing procedures for mounting structures to specific conditions for different installation environments. The main objectives are to:

• Safety: Guidelines for ensuring PV mounting systems are safe for installation and use, testing for mechanical stability and durability.
• Efficiency: Optimizing the performance of the PV mounting system, allowing maximum energy production from solar panels.
• Durability: Addressing the longevity of the mounting system by considering environmental factors such as wind, snow, and UV exposure.
• Compliance: Creating a framework for manufacturers and installers to comply with European regulations and standards related to solar installations.

The main features of the EN IEC 62817 standard can be listed as follows:

• Design criteria:
  • Structural integrity: This standard specifies criteria for designing a PV mounting system to ensure it can withstand extreme weather conditions, such as heavy snow loads or strong winds.
  • Material selection: Guidelines are given for selecting durable materials that can withstand environmental stress, corrosion, and abrasion, such as stainless steel or aluminum alloys.
• Testing requirements:
  • Mechanical testing: This standard includes testing for mechanical properties such as strength, stiffness, and stability under various loads. This ensures that the mounting system remains robust over time and does not compromise the solar panel's efficiency.
  • Corrosion resistance: Corrosion resistance is a fundamental requirement for systems exposed to the elements. This ensures the longevity of the system and the safety of the entire installation.
  • Installation and performance testing: This standard provides field test protocols to verify that the PV mounting system operates as intended after installation.
• Mounting system configurations:
  • Fixed and adjustable systems: This standard provides guidelines for both fixed and adjustable mounting systems. The choice of configuration depends on the type of installation and the desired tilt angle for optimal energy capture.
  • Roof-mounted and ground-mounted systems: This standard distinguishes between roof-mounted systems, commonly used in residential and commercial buildings, and ground-mounted systems, used for large-scale solar farms.
• Environmental issues:
  • Wind and snow loads: A critical consideration in the design and testing of PV mounting systems is their ability to withstand environmental factors such as wind and snow loads. This standard provides a framework for determining appropriate load conditions for different geographic areas.
  • Exposure to UV and temperature fluctuations: This standard takes into account long-term exposure to ultraviolet (UV) radiation and the effects of temperature fluctuations on materials used in PV systems.
• Installation practices: This standard emphasizes the importance of following proper installation methods to ensure system safety and reliability. This includes correctly positioning, securing, and fastening assembly components, as well as ensuring adequate training for installers.

The benefits of complying with the EN IEC 62817 standard are:

• Enhanced safety: By complying with this standard, manufacturers and installers can ensure the structural safety of PV mounting systems and minimize the risks associated with installation error.
• Increased durability: Guidelines help extend the lifespan of solar installations by ensuring PV mounting systems are made from high-quality materials and built to withstand environmental challenges.
• Better performance: Optimized design and installation practices lead to improved overall performance of solar energy systems, which directly contributes to greater energy efficiency and cost-effectiveness.
• Regulatory compliance: Compliance with standards is often a legal requirement in most European countries and ensures that installations meet safety and environmental standards.

Ultimately, EN IEC 62817 is a vital standard for ensuring the reliability and safety of photovoltaic mounting systems in solar power plants. It covers a wide range of criteria, from design and materials to installation practices, and aims to optimize the performance and durability of solar power plants.

Our organization, which has been supporting businesses across all sectors for years through a wide range of testing, measurement, analysis, and evaluation activities, has a strong team of employees who closely follow global developments in science and technology and are constantly improving themselves. In this context, we also provide testing services in accordance with the EN IEC 62817 Photovoltaic systems - Design adequacy of solar trackers standard.