SMA SC 100LV-560HE - Manual (Page 12)

Safety SMA Solar Technology AG
12 SC125_560HE-IEN083220 Installation Guide
Emergency-stop
In installations with more than one device or with additional external emergency-stop switches, the
emergency shut-off circuits have to be connected and tested for correct functionality, as described in
the installation guide. The emergency shut-off circuit may only be supplied with voltage from a device.
2.2.5 Power Supplies
Requirements for switching on the external power supplies
• All connections have been carried out according to the installation guide and the circuit
diagram.
• The protective ground connection for grid feed-in and for internal power supply has been made.
• The device has been switched off. The key switch is in the "stop" position and the main switches
are switched off.
• The DC input fuses (internal and external) are pulled and the protection against accidental
contact (Plexiglas covers) is installed. For team operation on both devices.
• The nominal voltage, frequencies and the right-hand rotary field are maintained (see device
technical data).
• The polarity of the DC voltage at the inputs/fuse inputs (device dependent) has been checked.
Emergency shut-off circuit
• The emergency shut-off circuit may only be supplied with power from a single Sunny
Central.
• Set the bridges at the emergency-stop terminal strip of the device into correct position.
WARNING!
Risk of lethal electric shock!
High voltages are present in the device.
• The protective ground connection must be made before the external voltage is
switched on.
• At the AC grid connection terminal, the nominal voltage, frequency and the right-
hand rotary field have to be maintained.
• Before inserting the DC input fuses (internal or external), the correct polarity and
earth fault protection of the inputs must be ensured. The fuses may only be inserted
or removed under load-free conditions and when using the appropriate personal
protective equipment and fuse carriers.
• In the case of inserted DC fuses (internal or external), reverse voltage is applied to
all externally connected DC main distributors and DC sub-distributors (Sunny String
Box) as well as the team device via the bus bar in the Sunny Central.
• The doors must remain closed when connecting the supplies!