SMA SC 100LV-560HE - Manual (Page 54)

Electrical Connection SMA Solar Technology AG
54 SC125_560HE-IEN083220 Installation Guide
5.2.3 AC grid connection with MV stations
The connection concept for two Sunny Central HE inverters is factory provided in the Sunny Central
MV station. In the Sunny Central MV station, the AC connection is 3-phase to the high-voltage winding
of a three winding power converter medium voltage transformer. The connection is made with male
taper plug-in contacts not included in the delivery.
Grounding and short-circuiting of the MS transformer high-voltage side
• Grounding and short-circuiting of the MS transformer high-voltage side is made in the customer
side upstream MS switching station.
• Grounding and short-circuiting of the MS transformer under-voltage side is made in the Sunny
Central HE inverter on the AC fuse switch disconnector. The corresponding grounding and short-
circuiting set can be ordered at SMA.
• This is connected to the grounding cable, then put into the fuse switch disconnector and closed.
• The grounding cable is located in the marked cable channel of the AC cabinet.
WARNING!
Risk of death due to burns and electric shock when live parts of the public grid
are touched!
• Do not touch the live components of the Sunny Central or the public grid.
• All safety precaution measures regarding the public grid must be observed.
• Only work on this device when it is switched off and under voltage-free conditions.
Optional grounding and short-circuiting set
The grounding and short-circuiting set can be ordered at SMA.
WARNING!
Risk of death due to burns and electric shock when live parts of the medium
voltage are touched!
For service and maintenance work on the Sunny Central, disconnect the medium voltage
transformer from the grid.