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International
time for acquiring the I-V characteristicIEC60904-9-20203.6
time for acquiring the I-V characteristic
time for acquiring the entire I-V characteristic of a PV device
Note 1 to entry: If the I-V characteristic of the PV device is measured in a single flash it is equal to the data
acquisition time.
Note 2 to entry: If the I-V characteristic of the PV device is measured through sectoring in different parts with
multiple flashes, it is the sum of data acquisition times for the single sectors of the IV characteristic.
3.7
spectral range
reference spectral distribution of sunlight at Air Mass 1,5 Global (AM1.5), defined in
IEC 60904-3. For simulator evaluation purposes two wavelength ranges are defined:
a) Restricted wavelength range (400 nm to 1 100 nm): This definition shall establish
backward compatibility to IEC 60904-9 Ed.2:2007. Spectral match evaluation is performed
in the 6 wavelength bands given in Table 1.
b) Extended wavelength range (300 nm to 1 200 nm): In accordance with Table 2 the total
wavelength range is divided into 6 wavelength bands, each contributing the same
percentage to the integrated irradiance.
3.8
spectral match
spectral match of a solar simulator defined by the deviation from AM1.5 reference spectral
irradiance as laid down in IEC 60904-3
Note 1 to entry: For six wavelength intervals of interest, the percentage of total irradiance is specified in Table 1
and Table 2. Table 1 shall be referenced if backward compatibility to the Edition 2 of this document is required.
Table 1 – Global reference solar spectral irradiance distribution
given in IEC 60904-3 contribution of wavelength intervals to total
irradiance in the restricted wavelength range 400 nm to 1 100 nm
Wavelength range
nm
Percentage of total irradiance
in the wavelength range
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