SMA SUNNY BOY STORAGE 3.8-US Instructions D'installation page 58

7 Commissioning
7.2 Commissioning the Inverter
Danger to life due to fire or explosion when batteries are fully discharged
A fire may occur due to incorrect charging of fully discharged batteries. This can result in death
or serious injury.
• Before commissioning the system, verify that the battery is not fully discharged.
• Do not commission the system if the battery is fully discharged.
• If the battery is fully discharged, contact the battery manufacturer for further proceedings.
• Only charge fully discharged batteries as instructed by the battery manufacturer.
Requirements:
☐ The AC circuit breaker must be correctly rated and mounted.
☐ The product must be correctly mounted.
☐ All conductors must be correctly connected.
☐ Unused enclosure openings must be sealed tightly with sealing plugs.
Procedure:
1. Lead the enclosure lid to the Connection Unit and
plug the ribbon cable into the socket on the
communication assembly.
2. Ensure that the ribbon cable is securely plugged into the sockets at both ends.
3. Position the enclosure lid of the Connection Unit at
an angle on the top edge, press down and tighten
all 6 screws crosswise (TX25, torque: 3 Nm ±
0.3 Nm (26.55 in-lb ± 2.65 in-lb)).
4. Switch on the AC circuit breaker.
58 SBSxx-US-10-IA-xx-14
WARNING
SMA Solar Technology AG
Installation Manual