SMA Off-Grid Systems - Manual (Page 8)

2 Safety SMA Solar Technology AG
8 Off-Grid-IS-en-30 Installation - Quick Reference Guide
2.2 Safety Precautions
This section contains safety precautions that must be observed at all times when working on or with the system. To prevent
personal injury or property damage and to ensure long-term operation of the system, read this section carefully and follow
all safety precautions at all times.
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Danger to life due to incompatible lithium-ion battery
An incompatible lithium-ion battery can lead to a fire or an explosion. With incompatible lithium-ion batteries, it is not
ensured that the battery management is intrinsically safe and will protect the battery.
• Ensure that the battery complies with the locally applicable standards and directives and is intrinsically safe.
• Ensure that the lithium-ion batteries are approved for use with the Sunny Island.
The list of lithium-ion batteries approved for the Sunny Island is updated constantly (see Technical Information
"List of approved lithium-ion batteries" at www.SMA-Solar.com).
• If no lithium-ion batteries approved for Sunny Island can be used, you should use lead-acid batteries.
Danger to life due to explosive gases
Explosive gases may escape from the battery and cause an explosion. This can result in death or serious injury.
• Protect the battery environment from open flames, embers, or sparks.
• Install, operate, and maintain the battery in accordance with the manufacturer's specifications.
• Do not heat the battery above the temperature permitted or burn the battery.
• Ensure that the battery room is sufficiently ventilated.
Danger to life from electric shock due to circuit breakers that cannot be tripped
In the off-grid system, only the circuit breakers that can be tripped by the Sunny Island can be tripped. Circuit breakers
with a higher operating current cannot be tripped. Under fault conditions, there may be a voltage that poses a danger
to life present on accessible parts for several seconds. This can result in death or serious injury.
• Check if a circuit breaker has a higher trip characteristic than the following circuit breakers which can be tripped:
– SI3.0M-11 and SI4.4M-11: circuit breaker with trip characteristic B6 (B6A)
– SI6.0H-11 and SI8.0H-11: circuit breaker with trip characteristic B16 (B16A) or circuit breaker with trip
characteristic C6 (C6A)
If a circuit breaker has a higher trip characteristic than the specified circuit breaker which can be tripped, you
should also install a residual-current device of type A.
Danger to life from electric shock due to damaged devices
Operating a damaged device can lead to hazardous situations that can result in death or serious injuries due to electric
shock.
• Only use the off-grid system when it is technically faultless and in an operationally safe state.
• Regularly check the off-grid system for visible damage.
• Ensure that all safety equipment is freely accessible at all times.
• Make sure that all safety equipment is in good working order.