SMA SI 3324 Installation - Manual (Page 72)

Commissioning SMA Technologie AG
Page 72 SI3324/4248-14:SE2406 Installation Guide
8.4 Operating with the Public Grid
If you wish to integrate a Sunny Island system into the public grid, you must set the
type of integration in the Sunny Island 3324/4248 ("24-8 Grid Connected"
parameter). To do this, start in the main menu (Home Screen):
1. Keep pressing the arrow key (↓) until you reach the "20-Settings" menu.
2. Press and use the arrow keys (↑ ↓) to scroll to the "24-Generator
Settings" menu.
3. Press once more and use the arrow keys (↑ ↓) to scroll to the "24-8
Grid Connected" parameter.
"GridNone" Setting (Factory Setting)
Select the "GridNone" setting when a generator, a public grid with large frequency
and voltage fluctuations, or no device is connected to the AC input of the Sunny
Island 3324/4248. The limits for generator voltage and frequency are set using the
parameters 24-4 to 24-7 (see also section 17.2.2 "Adjustable System Parameters"
(Page 134)).
"GridCharge" Setting
If only the grid is to be used for charging the batteries, then the parameter should be
set to "GridCharge". With this setting, it is not possible to feed the public grid through
the Sunny Island 3324/4248. Usually, no Sunny Boy inverters are connected to the
system.
Instead of the limits that can be defined using parameters 24-4 to 24-7, the following
predefined limits apply:
• Frequency: 49.8 Hz to 50.2 Hz
• Voltage: 190.0 V to 250.0 V
When using the "GridCharge" setting, set the "24-1 GenControl" parameter to
"Manual" and "24-3 GenOperation" parameter to "Auto".
The Sunny Island 3324/4248 will often shut down in poor grid quality because
the predefined voltage and frequency limits are often exceeded. In this case,
set the "24-8 Grid Connected" parameter to "GridNone" (see above), to allow
the voltage and frequency limits to be manually set to suit the conditions.