Dc Connection; Requirements For The Dc Connection - SMA SUNNY TRIPOWER 12000TL-US Installation Manual

6 Electrical Connection
Procedure:
1.
Danger to life due to electric shock
• Disconnect the inverter from all voltage sources (see Section 9, page 39).
2. If the protective cover is mounted, loosen the screws of the DC protective cover using an Allen
key (AF 3) and remove the DC protective cover.
3. Lead the equipment grounding conductor or the cable of the grounding electrode through the
installed conduit into the inside of the inverter.
4. Strip the equipment grounding conductor or the cable of the grounding electrode by 18 mm
(0.71 in).
5. Connect the equipment grounding conductor to the connection point with the symbol
and tighten with a screwdriver (blade width: 6 mm (0.24 in)) (torque: 5.8 Nm (51 in-lb)).
6. Connect the grounding electrode cable to the connection point GEC and tighten with a
screwdriver (blade width: 6 mm (0.24 in)) (torque: 5.8 Nm (51 in-lb)).
7. Make sure the equipment grounding conductor or the grounding electrode cable is firmly in
place.
8. Reattach the DC protective cover. Tighten all
four screws with an Allen key (AF 3) in the order
1 to 4 (torque: 3.5 Nm (31 in-lb)).
6.4

DC Connection

6.4.1

Requirements for the DC Connection

Requirements for the PV modules per input:
☐ All PV modules must be of the same type.
☐ All PV modules must be aligned and tilted identically.
☐ On the coldest day based on statistical records, the open-circuit voltage of the PV array must
never exceed the maximum input voltage of the inverter.
☐ The same number of series-connected PV modules must be connected to each string.
☐ The thresholds for the input voltage and the input current of the inverter must be adhered to
(see Section 14 "Technical Data", page 66).
☐ The maximum input current per string must be maintained (see Section 14 "Technical Data",
page 66).
Additionally required material (not included in the scope of delivery):
☐ Depending on the number of strings, one or two conduits made of metal: 25.4 mm (1 in)
30 STPTL-US-10-IA-xx-17
SMA Solar Technology America LLC
Installation Manual