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 [...]

Do you carry out repairs if an electrical fault is found?

2025-11-20T15:17:38+00:002 July 2025|, , |

No — we operate strictly under a Survey → Analysis → Reporting framework. We provide certified data and detailed findings for your appointed maintenance provider or installer to act on as required.

When should electrical testing be added to a thermographic inspection?

2025-11-20T15:17:40+00:002 July 2025|, , |

It’s recommended during annual maintenance checks, performance reviews, post-installation validation, or when thermal anomalies are suspected to have an electrical cause. It is especially valuable for system benchmarking, fault correlation, or prior to warranty expiry.

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.

What is string-level electrical testing and why is it useful?

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

String-level testing measures the electrical performance of PV strings — including voltage, current, insulation resistance, and polarity. It helps detect hidden faults such as underperforming strings, diode issues, or insulation degradation that may not be visible in thermal imagery.

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.

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