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Photovoltaic (PV) Balance of System Component Testing and Certification

Ensure quality and reliability in the PV balance of system

About PV Balance of System (BOS) testing

BOS encompasses the testing and certification of a wide range of components such as solar PV inverters, cables, connectors, junction boxes, switches, PV mounting systems, PV batteries, PV materials, PV trackers and storage systems.

Testing and certification of your BOS components helps you gain international recognition and market access for your products. It also identifies potential improvements in your manufacturing process, enabling you to increase production quality and product safety.

TÜV SÜD offers long-standing expertise and a strong background in PV BOS product safety and performance requirements. Our PV teams are familiar with all relevant national and international directives.

Our PV BOS testing and certification services include:

  • Product development

    TÜV SÜD provides support with BOS component testing during research and development (R&D). We offer PV laboratory qualification according to ISO/IEC 17025, which comprises verification of scope and accreditations, testing structure and laboratory layout, operations and maintenance requirements.

  • Product testing and certification

    Our experts conduct rigorous testing and certification in accordance with national and international standards.

  • PV inverters - IEC 62109 and country-specific grid connection requirements.
  • PV electrical components - junction box (EN 50548), cables (Draft DIN VDE AK 411.2.3) and connectors (EN 50521).
  • PV mounting systems - PPP 59029.
  • PV batteries and energy storage systems (ESS) - IEC 62619 and IEC 62620, as well as specific country safety requirements and standards.PV material testing - backsheet (PPP 58066), EVA encapsulant (PPP 58065) and adhesive and potting compound (PPP 58064).
  • PV trackers and storage systems - combination of IEC standards.
  • Our reliability testing for BOS components is conducted in addition to and above the standard test requirements.
  • Performance and safety-related environmental testing

    TÜV SÜD provides fast-motion simulation of various environmental conditions (heat, cold, dry, wet, etc.) and testing for corrosion resistance and long-term durability performance (endurance testing with outdoor field conditions, temperature change examination and moisture-heat examination).

  • Product quality monitoring and inspections

    Our experts conduct initial and follow-up surveillance for manufacturing facilities. We offer annual routine inspections comprising the predefined routine testing, special inspections and on-site assessments, pre-shipment inspection (PSI) and during-production audits (DuPro), as well as bankability audits.

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