SMA SMC 7000HV Installation - Manual (Page 42)

Electrical Connection SMA Solar Technology AG
42 SMC70HV11-IA-IEN112970 Installation Manual
• PowerGuard
This setting can be selected if the entire PV plant only consists of three Sunny Mini Central
inverters and in the event of a malfunction, the unbalanced load should be limited to 4.6 kVA
over a 10-minute average.
If one of the 3 inverters indicates a grid voltage fault or device fault and stops feeding in,
the other two inverters automatically limit their power to 4.6 kVA over a 10 minute average.
5.5.2 Cabling
Cable Requirements
For cabling the SMA Power Balancer, use a "LiYCY" cable, structured as shown here:
• Indoor: LiYCY 2 x 2 x 0.25
• Outdoor: Li-2YCYv 2 x 2 x 0.25
Deviating unbalanced load limit for Italy
The unbalanced load for inverters set to the Italian national standard DK 5940 is limited
to 6 kVA over a 10-minute average.
Position Description
A Flexible insulation
B Shielding
C Twisted pair 2 (2 x 0.25 mm²)
D Twisted pair 1 (2 x 0.25 mm²)