page 14
Installation & Taking I-V Curve
DS-1000 Operating Manual
Summary of Steps for Taking I-V Curves
1.
Connect the computer to the DS-Tracer and start IVPC. Turn the DS-Tracer
power switch ON.
2.
Connect pyranometers to the DS-1000. If pyranometers are connected, enter
pyranometer constants in IVPC. Refer to the IVPC help system for details. Note:
Pyranometers do not need to be used to sweep an I-V curve.
3.
Connect thermocouples to the DS-1000. Refer to the IVPC help system for
details. Thermocouples are not required to sweep an I-V curve.
4.
Connect the DS-Tracer test lead to the DS-Tracer before connecting the test lead
to the PV system. Connect the red clip to PV positive and the black clip to PV
negative. Be sure to connect the tracer to the PV system through a system
disconnect switch rated for Isc and Voc. The DS-Tracer is now ready to take I-V
curves.
5.
From the “Curve” menu in IVPC select “New Curve”.
6.
Edit I-V curve information such as name and site as needed.
7.
When ready, press the “Take Curve” button to begin the I-V sweep. The I-V curve
is displayed as soon as the curve sweep is complete.
8.
To take another I-V curve of the same PV system, repeat step 5-7.
To test another PV subsystem, open the PV system disconnect switch. Remove
the cables and repeat steps 4 and 7.
9.
When finished taking curves, open the PV system disconnect switch. Disconnect
the DS-Tracer from the PV system.
10.
Switch off the power to the DS-Tracer.
