SMA SC 400HE Installation - Manual (Page 23)

SMA Solar Technology AG Installation
Installation Guide SCxxxHE-IEN104432 23
4.2.1 MV Stations
Inverters in the HE series are normally set up in a compact concrete substation, opposite to each other
as a “left-hand system” and a “right-hand system”. The installation has to be carried out in accordance
with the VDE guidelines for a closed electrical operating room. The figure below depicts a left-hand
and a right-hand system.
The AC cabinets should always stand next to the dividing wall to the transformer room, to allow the
AC power cables to be connected to the transformer over the shortest possible route.
Minimum passageway in electrical operating rooms
Observe the following points for a minimum passageway:
• With fully opened switch cabinet doors, a minimum passage width of 500 mm
(escape routes) must be maintained, see DIN VDE 0100 part 729, part 731.
• To maintain the minimum passageway requirements, the cabinet doors in an inverter
system with two rows of opposing cabinets (e.g. in a station building) may only be
opened on one side at a time.
Left system Right system
A DC cabinet
B Inverter cabinet
C AC cabinet
WARNING!
Smoke development in electrical operating rooms.
We recommend the installation of a smoke detector inside the operating room which
controls the external emergency stop connection of the device and which switches off the
Sunny Central in the event of smoke.
A B C C B A
SUNNY CENTRAL 630HE SUNNY CENTRAL 630HE SMA SMA