KACO Powador-gridsave - Manual (Page 23)

Installing the device
Operating instructions Powador-gridsave_EN Page 23
Authorised electrician
7.2.1.1 Output from the inverter
Recommended cable cross-sections for the inverter output and fuse rating of cables for fixed wiring accord-
ing to VDE 0100 part 430
The fuse rating for the cable is dependent on the cable cross-section.
max. 40A automatic circuit breaker
NOTE
When the line resistance is high (i.e. long grid-side cables), the voltage at the grid terminals of the
inverter will increase during feed-in to the grid. The inverter monitors this voltage. If the voltage
exceeds the country-specific grid overvoltage limit value, the inverter switches off.
› Ensure that the conductor cross-sections are sufficiently large or that the cable lengths are suffi-
ciently short.
NOTE
In order to avoid asymmetries in the grid, systems with multiple battery systems should be designed
so that the inverters in the devices feed into the grid in differing phases.
› Follow the connection conditions for the particular type of grid and the schematic illustration
below.
Country
and
grid-type
Grid monitoring Required
monitoring
max. asymmetry between phases
L1,L2,L3
DE-NSP Three-phase or single phase phase unbalanced load 4.6 kVA
Table 5: Grid-type-specific connection conditions
L1
L2
L3
N
Connection X1 Connection X1 Connection X1 Connection X1
L1 L2 L3 N PE L1 L2 L3 N PE L1 L2 L3 N PE L1 L2 L3 N PE
Powador-gridsave inverter
1. L1 - L1 / L2 - L2 / L3 - L3
2. L1 - L2 / L2 - L3 / L3 - L1
3. L1 - L3 / L2 - L1 / L3 - L2
4. L1 - L1 / L2 - L2 / L3 - L3
Figure 14: Grid-side connection for systems with multiple battery systems with three-phase grid monitoring