SMA Solar Technology AG
WARNING
Danger to life due to fire and
explosion
In rare cases, an explosive gas mixture can
be generated inside the product under fault
conditions. In this state, switching operations
can cause a fire inside the product or
explosion. Death or lethal injuries due to hot
or flying debris can result.
• In the event of a fault, do not perform
any direct actions on the product.
• Ensure that unauthorized persons have
no access to the product.
• Do not operate the DC load-break
switch on the inverter in case of an
error.
• Disconnect the PV array from the
inverter via an external disconnection
device. If there is no disconnecting
device present, wait until no more DC
power is applied to the inverter.
• Disconnect the AC circuit breaker, or
keep it disconnected in case it has
already tripped, and secure it against
reconnection.
• Only perform work on the product
(e.g., troubleshooting, repair work)
when wearing personal protective
equipment for handling of hazardous
substances (e.g., safety gloves, eye
and face protection, respiratory
protection).
Quick Reference Guide
WARNING
Risk of injury due to toxic
substances, gases and dusts.
In rare cases, damages to electronic
components can result in the formation of
toxic substances, gases or dusts inside the
product. Touching toxic substances and
inhaling toxic gases and dusts can cause
skin irritation, burns or poisoning, trouble
breathing and nausea.
• Only perform work on the product
(e.g., troubleshooting, repair work)
when wearing personal protective
equipment for handling of hazardous
substances (e.g., safety gloves, eye
and face protection, respiratory
protection).
• Ensure that unauthorized persons have
no access to the product.
WARNING
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 1000 V or
higher.
STP50-41-IS-xx-21
2 Safety
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