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The sound that Tesla solar inverter makes

arnolddeleon

Supporting Member
Jul 21, 2012
683
767
SF Bay Area
I held my camera next to the inverter to record the really faint pumping noises that it makes. I thought some folks would find this interesting.

This was near solar noon, this is a 4 kW inverter with about 4 kW of panels on a NW facing roof. Inverter was on the SW wall of my house in sun. The glass door felt cool to the touch.

 

Electrph

Member
Aug 29, 2019
273
157
Central California
interesting .. is this noise unique to Tesla branded inverter vs solaredge etc?
I have heard the pumping noise of powerwalls when they are rapidly charging or discharging ... which is cool was not aware inverter made noise
 

JeremyWhaling

Member
Jul 25, 2019
93
76
So. Cal.
I have one of these likely in my future, with a 4kW expansion. Does this version have two MPPT channels? Are you using one or both channels?

Can you show what the config web page looks like?
 

arnolddeleon

Supporting Member
Jul 21, 2012
683
767
SF Bay Area
I have one of these likely in my future, with a 4kW expansion. Does this version have two MPPT channels? Are you using one or both channels?

Can you show what the config web page looks like?
According to the specs it has two MPPT channels. Here is an album of photos including some pictures/videos I had already shared

 
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arnolddeleon

Supporting Member
Jul 21, 2012
683
767
SF Bay Area
interesting .. is this noise unique to Tesla branded inverter vs solaredge etc?
I have heard the pumping noise of powerwalls when they are rapidly charging or discharging ... which is cool was not aware inverter made noise
I'm not aware of any other residential solar inverters that use liquid cooling so I suspect they are currently unique. The noise is similar to the sound the powerwalls make (which I'm sure is not a coincidence).
 
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Electrph

Member
Aug 29, 2019
273
157
Central California
I'm not aware of any other residential solar inverters that use liquid cooling so I suspect they are currently unique. The noise is similar to the sound the powerwalls make (which I'm sure is not a coincidence).
I was not keeping up on the inverter thread otherwise I would have known liquid cooled 😆 .... duh hence sound
 

jboy210

Supporting Member
Dec 2, 2016
4,824
2,968
Northern California
Nice. A liquid-cooled unit is more likely to stay in the optimal performance temp range and not be subject to output reductions that conductive cooled, and even fan-cooled units like my Deltas are. If my Delta units die I will be requesting Tesla inverters as a replacement.
 
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