What is IEC 62446-1?

2025-11-20T15:17:37+00:002 July 2025|, , |

IEC 62446-1:2016 is the international standard that defines the required electrical tests, documentation, and reporting for verifying the performance and safety of grid-connected photovoltaic (PV) systems. It is most commonly applied during commissioning, routine maintenance, or fault investigations — ensuring that the electrical characteristics of a solar installation meet design expectations and operational safety requirements. As part of our optional string-level electrical testing service, we carry out non-invasive tests in accordance with IEC 62446-1 to assess the DC-side health of [...]

Is the testing invasive? Do you need access to the inverter or roof?

2025-11-20T15:17:41+00:002 July 2025|, , |

No — all electrical testing is performed non-invasively from ground level using industry-grade instruments. We do not access internal inverter components or climb onto the roof. This ensures safety and minimal disruption during inspection.

How do I book an IEC 62446-3:2017 compliant solar inspection?

2025-11-20T15:18:03+00:0010 February 2025|, |

Booking is easy! Simply contact us via our website or call our team to schedule a fixed-price IEC-compliant thermal inspection. We will arrange an inspection at a suitable time with optimal conditions, providing you with a detailed thermal analysis and report to ensure your solar system remains safe, efficient, and fully insured.

How often should I get my solar panels inspected?

2025-11-20T15:18:04+00:0010 February 2025|, |

Industry recommendations suggest annual solar panel inspections, particularly for commercial installations and high-performance systems. According to UK government guidelines, regular maintenance, including thermal imaging assessments, helps extend the lifespan of PV systems and maintain peak efficiency. Some manufacturers require inspections every 1-2 years to maintain warranty coverage.

Can thermal imaging detect solar panel efficiency losses due to shading or dirt?

2025-11-20T15:18:05+00:0010 February 2025|, |

Yes. Shading and dirt accumulation cause temperature variations across the panel surface, reducing overall performance. Thermal imaging can highlight areas of underperformance, allowing homeowners to take corrective actions such as cleaning, repositioning, or replacing affected panels to restore maximum energy generation.

Why do insurance companies require certified solar inspections?

2025-11-20T15:18:05+00:0010 February 2025|, |

Insurance providers require thermal imaging reports to assess the risk of fire hazards, electrical faults, and system degradation in solar PV installations. Without a certified inspection, some insurance companies may increase premiums or deny coverage due to the potential for undetected safety risks. An IEC-compliant survey ensures regulatory compliance and helps protect your investment.

Can a thermal inspection help with solar panel warranty claims?

2025-11-20T15:18:29+00:0010 February 2025|, |

Yes, an IEC 62446-3:2017 compliant thermal inspection provides documented proof of faults such as hotspots, cracked cells, or manufacturing defects. Many solar panel warranties require thermal imaging evidence to support claims, allowing homeowners to secure free repairs or replacements from manufacturers.

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