I-V Curve Tracer



		Testing an Array





	Introduction This Page Specifications IVPC Software Tracer Photos	Description: The Daystar DS-100C I-V curve tracer is a portable self-contained unit for testing installed photovoltaic systems. It weighs 13 kg and is packaged in a non-metallic case 44 x 35 x 20 cm. The DS-100C uses a capacitive load to vary the impedance connected to the output terminals of the PV array under test. The voltage and current are sampled as the capacitors in the DS-100C are charged. See notes on Sweep Rate . This data set is transferred to the control computer for display, analysis, and storage using the powerful Windows-based IVPC software. The displayed I-V curve includes values of: • Open Circuit Voltage, Voc • Short Circuit Current, Isc • Peak Power • Voltage at Peak Power, Vpk • Current at Peak Power, Ipk • Fill Factor The DS-100C has two thermocouple inputs, Type T is standard, and two analog voltage inputs that can be used for irradiance sensors. Values from attached sensors are saved as part of the I-V curve data record. USB and RS-232 serial connections are supported. The DS-100C is packaged in a rugged non-metallic cases which increases safety. They can be operated continuously for more than ten hours before battery recharge. A copy of the manual may be downloaded here.
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