SMA SC 100LV-560HE - Manual (Page 74)

Commissioning SMA Solar Technology AG
74 SC125_560HE-IEN083220 Installation Guide
Equipotential bonding
The Sunny Central HE inverter is connected to the equipotential bonding of the mounting locations
respectively of the operation room. Make sure that the terminals are securely positioned.
AC auxiliary power supply connection
Check the connection of the separate cable for the external AC auxiliary supply voltage.
• If the power required is supplied externally and in three phases, a right-hand rotary field has to
lay here as well.
6.2.2 Cabling Check DC Power Connections
The DC power connections are made via the main DC cables to the inverter.
• The voltage on the individual DC main cables should be identical and must never exceed the
maximum DC voltage of the inverter.
• Make sure that the terminals are securely positioned.
Cabling checks Team-connection
• In the case that two Sunny Central inverters work in the team, check also the team terminals in
the devices for polarity and secure position.
• The cables are connected via the DC main cables between the team clamp in the Sunny Central
team chief and the team contactor clamp in the Sunny Central team member.
6.2.3 Cabling Check Serial Interfaces
Checking of the external communication and the string current monitoring
• Check the cabling of the connection of the data lines at the Sunny String Monitor HUB.
• Check the connection of the NET interface.
6.2.4 Emergency-stop cabling
Check the external emergency-stop switch and the emergency-stop chain.
ATTENTION!
Damage of the central inverter through too high DC voltage
The DC voltage of the PV generator must never exceed the maximum permissible inverter
input voltage.
• VPV ≤ 1000 V for Sunny Central Standard / HE with EVR option
• VPV ≤ 880 V for Sunny Central Standard / HE
• VPV ≤ 650 V for Sunny Central LV
Check the polarity of the individual DC main cables.
Incorrect polarity in one of the DC main cables can also damage the PV generator.