SMA Solar Technology AG
2 Safety
Installation Manual
SB13_21TL-IA-en-65
9
2.3 Safety Precautions
To prevent personal injury or property damage and to ensure long-term operation of the product,
read this section carefully and comply with the safety precautions at all times.
Danger to life due to high voltages
When exposed to sunlight, the PV array generates dangerous DC voltage which is present in the
DC conductors and the live components of the inverter. Touching the DC conductors or the live
components can lead to lethal electric shocks.
• Do not touch the DC conductors.
• Do not touch any live components of the inverter.
• Prior to performing any work on the inverter, disconnect it from all voltage sources as
described in this document (see Section 8).
If you disconnect the DC connectors from the inverter under load, an electric arc may occur, causing
electric shock and burns.
• If the inverter is not equipped with an Electronic Solar Switch and the regulations in the country
of installation require an external DC switch-disconnector, you must install an external
DC switch-disconnector.
• Always switch the AC miniature circuit-breaker off and then disconnect the inverter on the
DC side before pulling out the DC connectors.
• Danger to life due to high voltages
Touching a non-earthed PV module or array frame can result in fatal electric shock.
• Connect and earth the PV modules, array frame and electrically conductive surfaces in
continuous conduction mode. Observe the applicable local regulations.
Risk of burns due to hot surfaces
Some parts of the enclosure can get hot during operation.
• When in operation, touch the inverter on the enclosure lid only.
