SMA Solar Technology AG 2 Safety
Installation Manual - Quick Reference Guide FSS-IS-en-42 9
Chemical burns and poisoning due to battery electrolyte
If handled inappropriately, battery electrolyte can cause irritation to the eyes, respiratory system, and skin, and it can
be toxic. This may result in blindness and serious chemical burns.
• Protect the battery enclosure against destruction.
• Do not open or deform the battery.
• Whenever working on the battery, wear suitable personal protective equipment such as rubber gloves, apron,
rubber boots, and goggles.
• Rinse acid splashes thoroughly with clear water and consult a doctor.
• Install, operate, maintain, and dispose of the battery according to the manufacturer's specifications.
Risk of injury due to short-circuit currents
Short-circuit currents in the battery can cause heat build-up and electric arcs. Burns or eye injuries due to flashes may
result.
• Remove watches, rings, and other metal objects.
• Use insulated tools.
• Do not place tools or metal parts on the battery.
Risk of burns due to short-circuit currents on the disconnected Sunny Island
The capacitors store energy at the DC connection input area. After the battery is isolated from the Sunny Island, battery
voltage is still temporarily present at the DC terminal. A short circuit at the DC connection can lead to burns and may
damage the Sunny Island inverter.
• Wait 15 minutes before performing any work at the DC connection or on the DC cables. This allows the capacitors
to discharge.
Damage to the battery due to incorrect settings
The set battery parameters influence the charging behavior of the Sunny Island inverter. The battery can be damaged
by incorrect settings of the parameters for battery type, nominal voltage, and capacity.
• Ensure that the values recommended by the battery manufacturer are set (refer to the technical data of the battery
in the manufacturer documentation). Note that the battery charging behavior names used by
SMA Solar Technology AG and the battery manufacturer may, in some cases, differ in meaning (for the battery
charging behavior of the Sunny Island inverter, see technical information "Battery Management").
• Set the battery capacity for a ten-hour electric discharge (C10) The battery manufacturer specifies the battery
capacity in relation to discharge time.
Destruction of devices due to electrostatic discharge (ESD)
If enclosure parts are removed, the devices (e.g., Sunny Island or PV inverter) can be damaged or destroyed if
electronic components or terminals are touched.
• Do not touch any electronic components in open devices.
• Ground yourself before touching any connections.
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