More on the Delta Inverter

To log into the M-4-TL or M-8-TL inverter, 

Open the app while standing very close to the inverter. I stand inside by the window nearest it, maybe three feet away and it finds it automatically.

It will prompt you for a code. Enter the 4 digit code to get you logged in.

Once you in, this what you see:

-3.2 kWh produced today so far

-2.776 kW current power output

-1732.5 kWh produced since system install

(all data in the Tesla app)

After that though, its all new stuff. We get the system level AC voltage and AC  current.

247 V and 11.2 {Power=I  * V}

P= 11.2 A x 247 V=2.776 kW

The string level detail is next. PV1 and PV2 are the DC voltage and current produced by each string.

In this case, the real time power from each string is:

P1= 7.4 A x 229 V= 1694.6 W

P2= 4.4 A x 244 V=  1073.6 W

Total P=  2768.2 w or 2.768 kW

This data was about 9am. So PV1 must be the Eastern array.

Here is the same data near mid day when we are at peak output.  You can see the inveter is putting out a smidge over the nominal output (4.016 kW vs 4kW).

How much can the inverter output?

I dont know.....I saw a spike up to 4.1 kW once. Will it maintain 4.1, 4.2, 4.3?

I guess the next  month or so will find out where it clamps the output.

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