Advertenties
Beschikbare talen
Beschikbare talen
SMA Solar Technology AG
4 Grounding
Safety in accordance with IEC 62109
In order to guarantee safety in accordance with IEC 62109, you must take one of the following measures:
• Connect a grounding conductor made of copper wire with a cross-section of at least 10 mm² to terminal
AC1 or AC2.
• If one grounding conductor each is connected to AC1 and AC2, each grounding conductor must be made
of copper wire and have a cross-section of at least 4 mm².
5 Information on Battery-Backup Systems
Wiring and connection of automatic transfer switches for single-phase or three-phase battery-
backup systems
• Do not bridge the neutral conductors of connections X1 to X5 in the automatic transfer switch. If the neutral
conductor connections are bridged, residual-current devices could trip accidentally.
• Label the equipment and devices of the automatic transfer switch in accordance with the schematic diagrams.
This will facilitate installation, commissioning and assistance in case servicing is required.
Connection of automatic transfer switches for single-phase battery-backup systems
In single-phase battery-backup systems, only the line conductor of the Sunny Island that is connected to the circuit
breaker F1 of the automatic transfer switch is monitored for grid failure. If terminal AC2 Gen/Grid L is connected
to another line conductor, the battery-backup system is not able to synchronize with the utility grid following a grid
failure.
• With single-phase battery-backup systems, connect circuit breaker F1 and terminal AC2 Gen/Grid L of the
Sunny Island to the same line conductor, e.g. to L1 (for a single-phase battery-backup system with an all-pole
disconnection function).
• Connect the PV inverter and the Sunny Island to the same line conductor if possible. This way, in the event of
grid failure, the PV inverters are supplied with voltage directly and then can feed in even if phase coupling is
deactivated.
6 Overview of firmware versions
Systems with parallel operation with the utility grid
The system structure and system configuration (e.g. as battery-backup system) determine the firmware version that is
required for commissioning the system.
System structure
Single system or single-cluster sys-
tem
Multicluster system with MC-
Box-12.3-20
Multicluster system with MC-
Box-12.3-20 and GRID-
1)
BOX-12.3-20
1)
GRID-BOX-12.3-20 can only be used in countries where compliance with the European requirements for grid connection as set out in
Commission Regulation (EU) 2016/631 for establishing a network code (known as RfG) is not required.
Quick Reference Guide
SMA Energy System
Home with increased
self-consumption
from 3.20.09.R
Only with 1.04.00.R
Only with 1.04.00.R
SMA Energy System Home
with increased self-con-
sumption and battery
backup
from 3.20.09.R
Only with 1.04.00.R
Only with 1.04.00.R
SI44M-60H-80H-13-IS-de-12
4 Grounding
Battery-backup
system
from 3.20.09.R
Only with 1.04.00.R
Only with 1.04.00.R
15
Advertenties
