SMA MULTICLUSTER BOX 36 - Manual (Page 36)

8 Commissioning the Multicluster Box SMA Solar Technology AG
36 MC_BOX_36-BE-en-20 Operating Manual
8 Commissioning the Multicluster Box
Requirements:
☐ The Multicluster Box must be properly mounted.
☐ 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 connection cables must be firmly enclosed by a double-membrane seal or a cable support
sleeve in the base of the Multicluster Box.
☐ All connection cables for generator, loads, PV plant and Sunny Island inverters must be secured
inside the Multicluster Box.
☐ The base of the Multicluster Box must be closed by means of the sliding panels. All seals must
be correctly fitted.
☐ Protection against contact must be installed.
☐ The kick plates on the base of the Multicluster Box must be attached.
Procedure:
1. Close the Multicluster Box.
• Slightly raise the door stopper of the left-hand door with your foot and close the door.
• Lock the left-hand door using the turning lever.
• Slightly raise the door stopper of the right-hand door with your foot and close the door.
• Lock the Multicluster Box with the switch cabinet key.
2. Switch on and start the multicluster system in accordance with the Sunny Island documentation.
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 menu
400# Failure/Event for the Sunny Island inverters.