SMA SUNNY ISLAND 4.4M Manual Del Usuario página 9

SMA Solar Technology AG
Danger to life from electric shock due to live voltage
High voltages are present in the live components of the inverter when in operation. Touching live components results
in death or serious injury due to electric shock.
• Wear suitable personal protective equipment for all work on the product.
• Do not touch any live components.
• Observe all warning messages on the inverter and in the documentation.
• Observe all safety information of the battery manufacturer.
• Switch off or disconnect the following components from voltage sources in the following order before carrying
out any work:
– Sunny Island
– The circuit breakers of the Sunny Island, the control and measurement voltages
– All circuit breakers and load-break switches of the connected AC sources
– Load-break switch of the battery fuse
• Ensure that no disconnected devices can be reconnected.
• After disconnecting the Sunny Island from voltage sources, wait at least 15 minutes for the capacitors to
discharge completely before opening the doors.
• Before carrying out any work make sure that all devices are completely voltage-free.
• Cover or isolate any adjacent live components.
Danger to life due to electric shock
Overvoltages (e. g. in the case of a flash of lightning) can be further conducted into the building and to other
connected devices in the same network via network cables or other data cables if there is no overvoltage
protection.
• Ensure that all devices in the same network and the battery are integrated in the existing overvoltage
protection.
• When laying the network cables or other data cables outdoors, attention must be given to suitable overvoltage
protection at the cable transition from the inverter or the battery outdoors to the inside of a building.
Danger to life from electric shock due to circuit breakers that cannot be tripped
In an off-grid system and battery-backup system, only the circuit breakers that can be tripped by the Sunny Island
can be tripped in the event of a grid failure. Circuit breakers with a higher operating current cannot be tripped.
Under fault conditions, a voltage that poses a danger to life may be present on accessible parts for several
seconds.
• Check if a circuit breaker has a higher trip characteristic than the following circuit breakers which can be
tripped:
– SI4.4M-12: circuit breaker with trip characteristic B6 (B6A)
– SI6.0H-12 and SI8.0H-12: 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 breakers that can be tripped, you
should also install a residual-current device of type A.
Quick Reference Guide
DANGER
DANGER
WARNING
SI44M-60H-80H-12-IS-xx-12
2 Safety
9