Page 22 Installation Instructions Powador 2500xi / 3600xi / 4000xi / 4500xi / 5000xi_EN
8.2 Installation with multiple inverters
Observe the following regarding installations with multiple inverters:
Asymmetric grid feed:
The power should be distributed as equally as possible over the three phases. In Germany, the asymmetry between the phases may be a
maximum of 4.6kW (according to the VDEW guidelines concerning the connection and parallel operation of independent power generat-
ing plants on the low-voltage grid, 4th edition, 2001).
Figure 8.3: Grid-side connection for installations with multiple inverters
Electrical connection:
The Powador is equipped with 3-phase monitoring, but it only feeds in on one phase. In order to avoid asymmetries in the grid, instal-
lations with multiple inverters should be designed so that the inverters feed into the grid in differing phases. The inverter feeds into the
phase that is labelled L1 on the inverter’s terminals
If you have multiple inverters, connect the actual phase L1 to terminal L1 on the fi rst unit. On the second unit, connect phase L2 to ter-
minal L1. On the third unit, connect phase L3 to terminal L1. Continue as above. This distributes the power optimally.
Figure 8.4: Electrical connection
Connection L1 feeds into the grid.
Connections L2 and L3 are just monitored.
Section 8 · Powador as Part of a PV Installation
Wechselrichter
PV-Generator
L1
L2
L3
N
Sicherung
N PE
L3 L2 L1
1234
n
N PE
L3 L2 L1
N PE
L3 L2 L1
N PE
L3 L2 L1
PV-Generator
Inverter
fuse
To Next Page
Loading...
Need help?
General