my diy pv set-up

groar · 02-01-09, 04:13 PM

One thing I confirmed during the blackout : the inverter stops when the grid doesn't provide power. This is a requirement by European norms : the time between grid's power loss and inverter switch off must be lower than 200ms.

Does your inverter has the same behavior ?

In some regions, the power provided can have perturbations. Some inverter take some times to reset the mpp (max power point) tracker and resynchronize with the grid : up to a couple minutes. Some inverter are very quick to disconnect : 20-50 ms.
From time to time I can have several microcuts per day, so some appliances are resetting. My inverter wait as much as possible (200 ms) before powering off when there is perturbations/power loss. Since my panels are connected I don't remember having any microcut, but 2 months 1/2 isn't significant enough to be able to say that my inverter "erases" these small perturbations.

Denis.

02-01-09, 04:13 PM	#11
groar X-Frenchy: very Join Date: Sep 2008 Location: Toulouse, France Posts: 153 Thanks: 0 Thanked 2 Times in 2 Posts	One thing I confirmed during the blackout : the inverter stops when the grid doesn't provide power. This is a requirement by European norms : the time between grid's power loss and inverter switch off must be lower than 200ms. Does your inverter has the same behavior ? In some regions, the power provided can have perturbations. Some inverter take some times to reset the mpp (max power point) tracker and resynchronize with the grid : up to a couple minutes. Some inverter are very quick to disconnect : 20-50 ms. From time to time I can have several microcuts per day, so some appliances are resetting. My inverter wait as much as possible (200 ms) before powering off when there is perturbations/power loss. Since my panels are connected I don't remember having any microcut, but 2 months 1/2 isn't significant enough to be able to say that my inverter "erases" these small perturbations. Denis. __________________ Earth absorbs 1.8 t CO2/head/yr, while a French generates 6.2 t CO2/yr To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. kg saved 06/08-08/09: 1816.9+382.9 (ecodriving / 1420mi not driven) = 2199.8 To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. (2.66 kg/l diesel) kg saved by 3kWc photo-voltaic solar panels : 187 kg/yr To view links or images in signatures your post count must be 0 or greater. You currently have 0 posts. (59.1 g/kWh) Radioactive wastes saved by 3kWc photo-voltaic solar panels : Long life (>100,000 years) : 2.85 g/yr (0.9 mg/kWh) Short life (<300 years) : 31.7 g/yr (10.0 mg/kWh) Based upon "official" French figures...