Lux hybrid 3.6 and 2x4.8 storage. Only using 3.2kw of discharge.

arms

New install and noticing when the load is on the battery we are are maxing at 3.2kw discharge and taking the rest from grid. We hit 3.6 with solar.

arms

Is this normal? Do I have a setting wrong?

arms

Here’s with the immersion on.

QrizB

What's the maximum discharge rate on your Pylontechs? It could be 32A each, which would be 1.6kW each at a nominal 50V but a bit less as the voltage drops?

Reed_Richards

My battery cannot manage a 3 kW discharge (or my inverter won't let it).  The most it has managed today is 2.5 kW and I think that's typical.

arms

I’m not sure if I have the UP5000 (50A) or the US5000 (80A) will check tomorrow.

arms

Reed_Richards said:

My battery cannot manage a 3 kW discharge (or my inverter won't let it).  The most it has managed today is 2.5 kW and I think that's typical.

I have 2 US5000 rated at 80a discharge.

arms

After more digging, the continuous discharge rate of a US5000 is 2.4kw. So should total be 4.8kw (limited to 3.6kw due to inverter)?

arms

Taken the manual on the Luxpower site.

QrizB

arms said:

Taken the manual on the Luxpower site.

But look at the line above - max charge/discharge current 66A.

Power is voltage x current. In order to get 3600W at 66A, you need a battery voltage of 54.5V.

In the image you posted with your immmersion on, your battery voltage is only 49.1V so the maximum possible discharge at that time is 3240W, not 3600W. (3106W is 63.3A at 49.1V, so it's still slightly less than nominal, but you'd need to know how the rated conditions for the inverter compare to the actual conditions in your installation regarding temperature etc.)

arms

QrizB said:

arms said:

Taken the manual on the Luxpower site.

But look at the line above - max charge/discharge current 66A.

Power is voltage x current. In order to get 3600W at 66A, you need a battery voltage of 54.5V.

In the image you posted with your immmersion on, your battery voltage is only 49.1V so the maximum possible discharge at that time is 3240W, not 3600W. (3106W is 63.3A at 49.1V, so it's still slightly less than nominal, but you'd need to know how the rated conditions for the inverter compare to the actual conditions in your installation regarding temperature etc.)

Thanks. Now it makes sense. Looks like I'll need to swap out the immersion element to something smaller.