10 SB3-5TL-21-BE-en-10 Operating Manual
2 Safety SMA Solar Technology AG
2.3 Safety Precautions
STSatz_Sicherh_Einleitungssatz
This section contains safety precautions that must be observed at all times when working on or with
the product.
To prevent personal injury or property damage and to ensure long-term operation of the product,
read this section carefully and follow all safety precautions at all times.
SiHiw_Stromschlag durch hohe Spannung
SiHiw_nicht geerdetes PV-Modul
Danger to life due to high voltages in the inverter
The inverter should be mounted, installed and commissioned by qualified persons only.
This also applies to troubleshooting.
• Always operate the inverter in a closed state.
• Do not touch exposed cable ends.
• Have the inverter mounted, installed and commissioned by qualified persons only.
• If an error occurs, have it rectified by qualified persons.
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 10, page 47).
Danger to life due to electric shock
Touching an ungrounded PV module or an array frame can cause a fatal electric shock.
• Connect and ground the PV modules, array frame and electrically conductive surfaces so that
there is continuous conduction. Observe the applicable local regulations.
Risk of burns due to hot enclosure parts
Some parts of the enclosure can get hot during operation.
• Do not touch any parts other than the lower enclosure lid of the inverter during operation.
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