IEC TS 62915
Retesting guidelines for modified PV modules
Articles
- A Second-Source Material Means Retesting Everything? Using IEC TS 62915 to Keep a Whole Product Family Certified with Minimal SamplesModule makers qualify second and third sources, thin their wafers and trim encapsulant grammage almost every week, and each change can touch an IEC 61215/61730 certificate. Built around IEC TS 62915:2023, this article explains the three yardsticks for deciding whether something counts as a change, the few 'fatal' changes that demand full requalification, the retest menu for common material changes, a junction-box retest matrix, and practical strategies for representative samples and bundled changes.
- Changed a Material: Does the Certificate Still Count? A Guide to the IEC TS 62915 Retesting SpecificationOnce a module holds IEC 61215 / IEC 61730 certificates, does the certificate still cover it after a new encapsulant, thinner glass, a different cell size or a higher system voltage? We explain IEC TS 62915:2023: its role, the 19-item change map, six general rules, typical examples, what changed in 2023, where things stand in 2026, and practical advice for engineers.