SMA MC-Box 6.3 - Manual (Page 34)

7 Commissioning the Multicluster Box SMA Solar Technology AG
34 MC-BOX-6_12-BE-en-20 Operating Manual
7 Commissioning the Multicluster Box
Requirements:
☐ The Multicluster Box must be properly mounted or installed.
☐ The multicluster system must be grounded outside the Multicluster Box on either the generator
side or the load side.
☐ The neutral conductor must be connected to the grounding conductor.
☐ All connection cables must be correctly connected.
☐ All cables must be tightly enclosed by the membrane on the bottom side of the Multicluster Box.
☐ All connection cables for generator, loads, PV system and Sunny Island inverters must be
secured inside or outside the Multicluster Box.
Procedure:
• Commission the multicluster system (see documentation of the Sunny Island inverters).
Load shedding in the first two operating hours
The state of charge (SOC) recorded by battery management and the available battery
capacity (SOH) will deviate strongly from the actual SOC and SOH values for a newly
connected battery. During operation, the values recorded by battery management will
gradually approach the real values. In the first two operating hours with the new battery,
these deviations can lead to load shedding and corresponding entries in the log file.