SMA SMC 7000HV Installation - Manual (Page 38)

Electrical Connection SMA Solar Technology AG
38 SMC70HV11-IA-IEN112970 Installation Manual
5.5 Connection of the SMA Power Balancer
The Sunny Mini Central is equipped with the SMA Power Balancer as standard. This enables a circuit
connection of 3 Sunny Mini Central inverters to a three-phase feed-in system.
Each of the 3 Sunny Mini Central devices in a group must be connected to a different phase conductor
of the low-voltage grid (L1, L2 and L3).
By activating this circuit, you can stipulate how the other two Sunny Mini Centrals are to react if there
is a device disturbance with the third Sunny Mini Central or there is a grid voltage fault in its phase.
The connections for the SMA Power Balancer are galvanically isolated from the rest of the
Sunny Mini Central circuit.
5.5.1 Configuration
The SMA Power Balancer is deactivated at the factory using the "PowerBalancer" parameter
(parameter setting = Off) and can only be activated and configured using a communication product.
To change the "PowerBalancer" parameter, you need a personal access code – the so-called
SMA Grid Guard-Code. The application form for the personal access code is available in the
download area at www.SMA.de/en, in the "Certificate" category of the respective inverter.
The configuration options are described below.
Three-phase grid connection
For further information on this subject, see the Technical Information
"Three phase connection with Sunny Mini Central" in the download area at
www.SMA.de/en.