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IEC/TS 63126 Ed. 2.0 en:2025

Guidelines for qualifying PV modules, components and materials for operation at high temperatures
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IEC/TS 63126 Ed. 2.0 en:2025

Guidelines for qualifying PV modules, components and materials for operation at high temperatures

IEC/TS 63126 Ed. 2.0 en:2025

IEC TS 63126:2025 defines additional testing requirements for photovoltaic (PV) modules deployed under conditions leading to higher module temperature which are beyond the scope of IEC 61215-1 and IEC 61730-1 and the relevant component standards, IEC 62788-1-7, IEC 62788-2-1, IEC 62790, and IEC 62852.

The testing conditions specified in IEC 61215-2 and IEC 61730-2 (and the relevant component standards IEC 62788-1-7, IEC 62788-2-1, IEC 62790, and IEC 62852) assumed that these standards are applicable for module deployment where the 98th percentile temperature (T98), that is the temperature that a module would be expected to exceed for 175.2 hours per year, is less than 70 °C.

This document defines two temperature regimes, temperature Level 1 and temperature Level 2, which were designed considering deployment in environments with mounting configurations such that the T98 is:

  • less than or equal to 80 °C for temperature Level 1, and
  • less than or equal to 90 °C for temperature Level 2.

This document provides recommended additional testing conditions within the IEC 61215 series, IEC 61730 series, IEC 62788-1-7, IEC 62788-2-1, IEC 62790, and IEC 62852 for module operation in temperature Levels 1 and 2.

Successfully passing a higher Level for a test, sequence of tests, or complete testing for a higher Level is an implied passing of the relevant lower Level testing. For example, passing 200 thermal cycles for Level 2 is considered passing Level 0 and Level 1 for 200 thermal cycles.

SDO IEC: International Electrotechnical Commission
Document Number IEC/TS 63126
Publication Date Not Available
Language en - English
Page Count 38
Revision Level 2.0
Supercedes
Committee 82
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