Recent content by PeR

Sorry, my fault, it was only the aliasing problem caused by digital signal sampling.

Here is the Sunspec signal specification: https://sunspec.org/wp-content/uploads/2021/03/SunSpec-Communication-Signal-For-Rapid-Shutdown-v39.pdf http://www.solarhub.co.th/images/sunspec/SunSpec_Rapid_Shutdown_Test_Specification_APPROVED_19.pdf The transmitted bits seem to follow the...

I finally managed to check the signal induced in the core by an oscilloscope. The signal indeed repeats every ~1s, frequency modulated (~1kHz/~270Hz).

I have just tried it and have to report that it works well. I made the test using a single 450W module with a Tigo TS4-A-F rapid shut down module and an APSmart transmitter. In the shut-down state it gave about 0.6V, while with the transmitter powered on it provided the full voltage and power...

I am searching for a rapid shutdown solution and found Tigo TS4-A-F modules interesting, but they require a transmitter, if not already implemented in the inverter. Unfortunately, it seems that Tigo transmitters are currently impossible to get in Europe (and only with enormous postage costs from...

Hello, Can anyone tell me what is the max PV current for iGrid VE II 5.5? Could I connect 12 PV panels with V_oc=42V, V_mpp=35V, I_MPP=10.8A, I_SC=11.4A? I guess that connecting them in series would not work due too high VOC=504V>500V(declared maximum). What about in two parallel strings, which...