Overall evaluation system capable of meauring solar cell dark current

The SS9620 is an overall solar cell evaluation system that consists of the I-V meter 4601 and the booster unit 46015. Its combination makes it possible to measure the I-V characteristics and dark current of solar cells or modules by using a solar simulator. In addition, the SS9620 contains the reverse polarity unit CC046012 or CC046013, allowing precise parallel resistance measurement and bypass diode evaluation. The I-V meter 4601 supports short, middle and long light pulses and achieves I-V measurement at maximum 100 points in only 5 ms. It measures voltage, current and reference cell current in parallel in the minimum 50 μs to the maximum 6 s per step.

Main Functions

• Dark current measurement of large solar cell modules by connecting the booster unit 46015
• Precise parallel resistance measurement and bypass diode evaluation by using the reverse polarity unit
• Maximum output power of 300 W (300 V/±1 A, 30 V/±10 A)
• High speed measurement at 100 points in 5 ms
• 50 μs to 6s/point that supports various kinds of solar cells
• Sampling for short-pulsed, middle-pulsed and long-pulsed light
• 3-slope linear sweep function to measure finely around Isc, Pmax and Voc

Synchronization with solar simulator

To evaluate a solar panel using pulsed light, the shutter open/close and pulse emission of a solar simulator and the sweep timings of the I-V meter need to be synchronized. The SS9620 is equipped with four output ports and two input ports for semiconductor relay contact signals that can used for shutter open/close control and light emission control, making it possible to synchronize with the solar simulator.
In addition, in sweep measurement using external trigger input signals, the step count per pulsed light can be controlled by setting the sampling and the step count per trigger.
As the reference cell current is measured at the same time as the output voltage and current of a solar cell, you can compensate for optical power fluctuations generated at the time of pulse emission in I-V characteristics.

*For the detailed specifications, please download the brochure from "Documents."