SMA SB 4200TL HC Multi-String - Manual (Page 9)

SMA Technologie AG Safety Instructions
Installation Guide SBTLHCMS-IEN080411 Page9
3 Safety Instructions
Caution! Overvoltage!
Check the system design using the "Sunny Design" design tool
(
www.SMA.de ) or by calling the SMA Service Line. Overvoltage damages
the Sunny Boy and results in the exclusion of all warranty claims!
Warning! High voltages!
Work on the Sunny Boy with the cover removed must be carried out by a
qualified electrician. High voltages are present in the device. Before work-
ing on the Sunny Boy with the cover removed, the AC and DC voltages
must be disconnected from the Sunny Boy and the capacitors must be dis-
charged.
The Sunny Boy must be disconnected from the mains grid and precautions
must be taken to prevent the grid being inadvertently reconnected. In ad-
dition, the connections to the PV generator must be disconnected.
After isolating the AC and DC voltage, you must wait approx. 30 minutes
for the capacitors in the Sunny Boy to discharge. Only then is it safe to
open the unit by removing the cover. You must also make sure that no
voltage is present in the device.
Caution! Electrostatic charge!
When working on the Sunny Boy and handling the components, remem-
ber to observe all ESD safety regulations. Electronic components are vul-
nerable in terms of electrostatic charge. Discharge any electrostatic
charge by touching the grounded enclosure before handling any electron-
ic component.
Notice! Entry of water and dirt!
Once the handle of the Electronic Solar Switch has been pulled out, the
Sunny Boy provides protection degree IP21. The Sunny Boy is then no
longer protected against water and contamination with dirt!
Grounding the PV generator
Pay attention to local regulations for the grounding of the modules and the PV-
generator. SMA reccomends to electrically bond the module frames, the racks
and all metal surfaces and ground these in order to have optimal protection of the
system and personnel.