SMA SC 400HE - Manual (Page 12)

2 Safety SMA Solar Technology AG
12 SC4-63HE-BE-BEN103280 Operating Manual
2.2 Safety Instructions
Electrical Risk
Risk of electric shock when touching conductive parts
High voltages that can cause electrical shocks are present in the inverter. Work on the inverter is only
allowed if the power is disconnected and in compliance with the guidelines that apply at the
installation location.
• Disconnect the following components:
– Grid voltage for grid feeding
– Internal power supply
– DC voltage from the PV array
– Additional external voltages (e.g., control signals of a control room)
• Ensure that the device cannot be reconnected.
• Ensure that no voltage is present.
• Ground and short-circuit.
• Cover or safeguard any adjacent live components.
Electric shock through capacitors not fully discharged
Hazardous voltages may still be present in the inverter even if the main AC and DC switches are
switched off.
• Wait at least 10 minutes after switching off the inverter.
Electric shock caused by damage on the inverter
The operation of a damaged inverter can lead to serious or lethal injuries through electric shock.
• Operate the inverter only in technically proper and operationally safe status.
• Operate the inverter only when there is no visible damage and check regularly for visible
damage.
• Ensure that all external safety features are freely accessible at all times and that they function
correctly.
• Regularly check for correct functioning.
Electric shock caused by ground fault
In case of a ground fault, assume that grounded plant components are still live.
• Ensure that no voltage present before touching.
Electric shock resulting from a failure to comply with safety requirements
Failure to follow this manual and the operating or safety instructions it contains may lead to severe
injury from electric shock.
• Only perform work as described in this manual. Observe all safety instructions.