UV Preconditioning Tests of PV Modules according to IEC 61215 Series

The qualification of PV modules according to IEC 61215 and IEC 61646 requires preconditioning with defined doses of UVA and UVB radiation. Unlike conventional radiometers, the BTS256-UV spectroradiometer enables the most accurate measurement of UVA and UVB irradiance levels irrespective of the type of UV source used. Each device is supplied with a traceable calibration certificate and is designed to operate at the required high temperature.

The BTS256-UV measures the spectral irradiance produced by UV preconditioning systems over the spectral range 280 nm to 400 nm. This enables the most accurate determination of the absolute proportions of UVA and UVB radiation. Incorporation within automated systems is made possible via the RS-485 serial interface with the software Read-out Kit, S-SRK-BTS256. This enables control of the UV radiation system and ensures an appropriate dose of UVB radiation within a total UV prescribed dose of 15 kWh/m2. The full measurement data are available via the user application software or the Read-out Kit.

The BTS256-UV spectroradiometer is built into a stainless steel housing that has excellent UV stability and low thermal conductivity providing reliable operation at the obligatory temperature of (60±5)°C. Its thin construction and integrated cosine diffuser ensure correct measurement of irradiance in the required plane.

The calibration laboratory at Gigahertz-Optik offers factory calibrations for the BTS256-UV with the highest level of traceability. They are subject to the same quality management as used in Gigahertz-Optik’s DAkkS-accredited calibration and testing laboratory. ISO 17025 accredited test certificates of calibration for the BTS256-UV are optionally available.

The BTS256-UV spectroradiometer covers the spectral range 200 nm to 520 nm and is therefore suitable for other high intensity UV applications including UV curing, solar simulation, UV weathering systems, and germicidal UV radiation