Operating Manual

Installation, assembly and commissioning for
the first time
Version 1.1 Page 40 of 92
4.5 Preparing the electrical connections for the single mode
Definition of single mode:
Single mode means the operation of a BMZ ESS 7.0 energy storage system at an inverter.
Safety instructions
Please follow the safety instructions in the Safety section, page 9.
Establish the connections between the inverter and the battery
Pre-conditions:
• The current isolator (NH isolator) must be pulled
• The battery inverter must be switched off (“Off”)
Check for the correct polarity carefully before establishing connections. Connection lines are marked in different
colours:
• Plus pole = RED
• Minus pole = BLACK
The connection of a battery with an SMA Sunny Island inverter is described below as an example.
When using another inverter, please follow the specifications in the corresponding manufacturer’s
documentation.
Check whether the inverter used by you is approved for use with the BMZ ESS 7.0 battery storage system.
Step Description
1 Push the 50 mm² lines through metric screw joints into the housing of the inverter.
Plus pole = RED
Minus pole = BLACK
Figure 4-4: inverter, connection area for battery lines
The 50 mm² connection lines must NOT be connected to incorrect poles.
Follow the installation manual of the inverter manufacturer.