svetz
Works in theory! Practice? That's something else
Saw an interesting post regarding Enphase microinverters on their forums, but it's probably applicable to all microinverters.
Microinverters are supposed to drop out for 5 minutes when the power falls outside of tolerances. It's not uncommon to see them drop out occasionally here and there due to minuscule issues. But some people have a lot of them dropping out all around the same time every day, and while that could be something noisy getting switched on during the day (e.g., a pool pump), it might also be something else. In this post, the "noise" was from a faulty microinverter.
Here's a link to the original thread, but you'd need to scroll down a bit to:
How they diagnosed it was the installer toolkit measures noise and they saw they had noise 110kHz range. They then flipped off breakers and confirmed the noise was the PV side. Then they shaded the panels one at a time until the noise went away. Replacing that microinverter solved the problem.
Microinverters are supposed to drop out for 5 minutes when the power falls outside of tolerances. It's not uncommon to see them drop out occasionally here and there due to minuscule issues. But some people have a lot of them dropping out all around the same time every day, and while that could be something noisy getting switched on during the day (e.g., a pool pump), it might also be something else. In this post, the "noise" was from a faulty microinverter.
Here's a link to the original thread, but you'd need to scroll down a bit to:
How they diagnosed it was the installer toolkit measures noise and they saw they had noise 110kHz range. They then flipped off breakers and confirmed the noise was the PV side. Then they shaded the panels one at a time until the noise went away. Replacing that microinverter solved the problem.
