UI-Kennlinienmeßgerät für Solarmodule und -generatoren


UI-Kennlinienmeßgerät für Solarmodule und -generatoren

PVPM Users Manual Page 25

Parameters affecting the Accuracy of the Measurement

● The measured value of the irradiation reference sensor

has to be adjusted with the measured temperature of the


● The measurement of the cell temperature has to take

place instantaneously before/after the measurement of

the characteristic within 1second and an accurateness of


● The active surface of the device under test must lie inplane

with the irradiation reference sensor (within +/-5%)

● Before the measurement of the I-V characteristic the

irradiation has to be constant enough for at least

10seconds (+/-10W/m²), that way misinterpretations of

the temperature of tested device and reference sensor

can be avoided

● The irradiation may not fluctuate around more than

10W/m² (PVPM will call attention in this case)

● Temperature of tested device and reference sensor has

got to be balanced (no alteration of temperature my be


● Current and voltage of the device under test are

measured with different measuring lines (four-wire


PV-Engineering GmbH

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