Sonnen eco 10, Installation And Commissioning Manual, Page: 25 / 65

17
The Hub board
Fig. 23 Hub board
Each sonnen unit comes with a green circuit
board, called the Hub board, located below the
main din rail in the main cabinet. There are also
green POS male connectors that will be used to
make connections to the Hub. Some of these
optional connections include:
1. Generator autostart wiring
2. Emergency stop switch
3. Whole home self consumption kit
Connecting AC cables
DANGER
Danger to life by electric shock!
Touching live parts of the electrical
connection may lead to death or
serious injury.
▶
Turn off the storage system.
▶
Turn off the main disconnect
circuit breaker.
Only trained, electrically qualified
persons are allowed to perform the
electrical installation.
Trained, electrically qualified person only!
Trained, electrically qualified person only! The
storage system has two AC primary connections:
One for the utility grid and one for the micro-grid.
These connections must be made for the storage
system to operate.
The utility grid port on the storage system must
be connected to either the utility meter or the
main utility panel. In either case, install a main
disconnect between the storage system and the
utility grid of equal or greater rating than the
supply feeder connection, up to 200 amps.
If using a protected loads panel, design the panel
for a nominal current of 33A.
Fig. 24 Installation using protected loads panel
Special care must be taken to ensure the
main panel and the protected loads panel are
electrically isolated from each other when the
storage system is not providing a closed circuit
between the two. L1, and L2, and N must have no
connection between the two panels aside from
through the storage system.
If not using a protected loads panel, use the
storage system’s built-in, 200-amp automatic
transfer switch to provide backup power for whole
house.
Fig. 25 Installation without protected loads panel
In either case, the load that will be powered by
50A rated
Main
utility panel
Protected
loads panel
Generator (optional)
Utility
meter
Storage
system
Utility
grid
Production
meter
PV array
Main utility panel
Generator (optional)
Utility
meter
Storage system
200A rated
Utility grid
Production
meter
PV array