2 Safety SMA Solar Technology AG
10 SCCPXT-IA-D7-en-42 Installation Manual
Danger to life from electric shock if the Sunny Central is damaged
Operating a damaged Sunny Central can lead to hazardous situations that result in death or serious injuries due to
electric shock.
• Only use the Sunny Central when it is in a technically faultless condition and safe to operate.
• Regularly check the Sunny Central for visible damage.
• Make sure that all external safety equipment is freely accessible at all times.
• Make sure that all safety equipment is in good working order.
• Wear suitable personal protective equipment for all work on the Sunny Central.
Danger to life from electric shock even if the Sunny Central is disconnected on both AC and DC sides
The precharge unit of the option "Q at Night" will carry live voltage even if the AC contactor and the DC switching unit
are open. Touching live components of this assembly will result in death or serious injury.
• Do not touch any live components.
• Switch the Sunny Central off.
• Wait 15 minutes after switching off the inverter before opening it. This will ensure that the capacitors are
discharged.
• Ensure that no voltage is present.
• Do not remove protective covers.
• Observe the warning messages.
• Wear personal protective equipment.
Danger to life from electric shock if the Sunny Central is not locked
If the Sunny Central is not locked, unauthorized persons will have access to live components carrying lethal voltages.
Touching live components can result in death or serious injury due to electric shock.
• Always close and lock the Sunny Central.
• Remove the keys from the door locks and from the key switch.
• Keep keys in a safe place.
• Ensure that unauthorized persons do not have access to the PV system.
Danger to life due to blocked escape routes
In hazardous situations, blocked escape routes can lead to death or serious injury. Opening the doors of two
Sunny Central inverters located opposite each other blocks the escape route. It is imperative that the escape route is
freely accessible at all times.
• An escape route of at least 500 mm width must be available at all times. Make sure the minimum passage width
of the escape route meets local standards.
• Do not place any objects in the escape route area.
• Remove all tripping hazards from escape routes.
• If two Sunny Central inverters have been installed facing each other, never open the doors of both inverters
simultaneously.
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