Anomaly guide
17 anomaly classes found on solar plants
The SolarDetech platform automatically assigns every anomaly it finds in thermal and RGB imagery to one of 17 classes. This guide sets out the definition of each class, its signs in the imagery, its possible causes and the action required in the field.
The classes are defined following the IEC TS 62446-3 methodology. Thermal classes are determined from the panel's temperature difference under load. This difference is normalised to irradiance and compared with neighbouring panels. RGB classes are determined from the visible-light image, and some classes from both channels assessed together.
Priority is set with both production loss and safety risk in mind. There are four priority levels: Very high, High, Medium and Low. Junction box heating and reversed polarity are rated Very high even when the production loss is small. For hot cell and diode classes, priority rises as the measured temperature difference grows.
Classes
String fault (3 or more consecutive modules)
String-Fault
- Channel
- Thermal
- Priority
- High · very high if arcing
See the anomalies in your plant, panel by panel
Send us your panel count and plant location, and we will send you a quote within 24 hours at most.