SMA SC 100LV-560HE - Manual (Page 13)

SMA Solar Technology AG Safety
Installation Guide SC125_560HE-IEN083220 13
• The polarity of the DC voltage at the inverter input/team input (device dependent) has been
checked.
• The photovoltaic generator has been checked with an insulation test to ensure that there is no
ground fault.
Sequence for switching on the external power supplies
• Grid voltage for the grid feed-in
• Grid voltage for internal power supply
• DC voltage from the photovoltaic generator
• DC voltage for team operation (optional)
2.2.6 Disconnecting the device
External disconnection of the device must always occur under load-free conditions. The device must
be switched off in order to do this, the key switch must be in the “Stop” position.
The following power supplies must be disconnected:
• Grid voltage for the grid feed-in
• Grid voltage for internal power supply (optional)
• DC voltage from the photovoltaic generator
• DC voltage for team operation (optional)
• If necessary, additional external voltages (e.g. emergency-stop)
Simply switching off the main AC and DC switches is not sufficient to ensure proper disconnection of
the device. The main switches only separate the power circuit from the grid and the photovoltaic
generator.
DANGER!
Risk of lethal electric shock!
Work on the Sunny Central may only be performed after switching off the power to the
unit. The VDE regulations must be followed.
• Disconnection (also team device)
• Secure against re-connection
• Verify that the installation is free of voltage
• Ground and short the unit if necessary (not on the DC side)
• If necessary, cover or protect against accidental contact with any neighboring
voltage carrying components