SMA SC 100 Indoor Installation - Manual (Page 11)

SMA Solar Technology AG Safety Instructions
Installation Guide SC-100-IEN093231 11
Lightning / Overvoltage Protection
The device has internal overvoltage protection on the DC side and, depending on the option chosen,
also has lightning and/or overvoltage protection on the AC side. The desired level of protection can
only be achieved when the grid connection point has a Lightning Protection Zones Concept in
compliance with DIN VDE 0185-3 (DIN EN 62305 / VDE 085, part 305-3). In keeping with the
Lightning Protection Zones Concept, there are lightning conductors and combined overvoltage
protectors which are not included in the scope of delivery for the equipment and which must be
installed at the entrance (transfer point from lightning protection zone LPZ 0 to LPZ 1).
Emergency Shut-off
The inverter is not equipped with an external emergency shut-off switch.
An external emergency shut-off switch or the external emergency shut-off function for more than one
device can be ordered as an option (emergency shut-off circuit).
3.9 Operation
Apart from the Sunny Central Control, there are no control elements on the device. The cabinet doors
must only be opened for commissioning, maintenance and troubleshooting, as well as for data query
and parameter setting. Before opening, the device must be switched off using the key switch. Please
also note the following safety instructions for working on the device.
We recommend using lightning protection for the PV generator.
A direct strike can irreparably damage the overvoltage protectors or other system
components and cause additional consequential damages.
We recommend expanding the lightning and overvoltage protection for external input
control voltage. Please see section 7.1.9 Lightning and Overvoltage Protection.
WARNING!
The emergency shut-off circuit may only be supplied with power from a single Sunny
Central.
DANGER!
Before opening the door, the Sunny Central must be switched off using the key switch!
The Sunny Central must not be operated with the door open!