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2 Safety
Danger to life due to electric shock from destruction of the measuring device due to
overvoltage
Overvoltage can damage a measuring device and result in voltage being present in the enclosure of the measuring
device. Touching the live enclosure of the measuring device results in death or lethal injuries due to electric shock.
• Only use measuring devices with a DC input voltage range of 600 V or higher.
Risk of burns due to hot enclosure parts
The enclosure and the enclosure lid may get hot during operation. The DC load-break switch can not become hot.
• Do not touch hot surfaces.
• Wait until the inverter has cooled down before touching the enclosure or enclosure lid.
Damage to the enclosure seal in subfreezing conditions
If you open the inverter when temperatures are below freezing, the enclosure seals can be damaged. This can lead
to moisture entering the inverter.
• Only open the inverter if the ambient temperature is not below -5°C (23°F).
• If a layer of ice has formed on the enclosure seal when temperatures are below freezing, remove it prior to
opening the inverter (e.g. by melting the ice with warm air).
Damage to the product due to sand, dust and moisture ingress
Sand, dust and moisture penetration can damage the product and impair its functionality.
• Only open the inverter if the humidity is within the thresholds and the environment is free of sand and dust.
• Do not open the inverter during a dust storm or precipitation.
• Close tightly all enclosure openings.
Damage to the inverter due to electrostatic discharge
Touching electronic components can cause damage to or destroy the inverter through electrostatic discharge.
• Ground yourself before touching any component.
Grounding conductor test prior to recommissioning
Prior to recommissioning SMA inverters after the installation of SMA components or power assemblies which
cannot be replaced intuitively, ensure that the grounding conductor in the inverter is correctly connected. The
function of the grounding conductor must be ensured and all locally applicable laws, standards and directives
must be observed.
Observe superordinate standards
The repair work on devices and the consideration and application of other standards which correspond to a
superordinate standard is the responsibility of the qualified person performing the work. Unauthorized alterations
will void guarantee and warranty claims and in most cases terminate the operating license. SMA Solar
Technology AG shall not be held liable for any damage caused by such changes.
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CH-SBCOM31BG2-SBxx000TL-US-22-RM-xx-10
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SMA Solar Technology AG
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