SMA SUNNY TRIPOWER CORE1-US - DC Connection; Requirements for the DC Connection

6 Electrical Connection
SMA Solar Technology America LLC
Installation ManualSTP50-US-40-IA-en_es-1128
9. Strip off the conductor insulation of L1, L2, L3 and, if applicable, N by 27mm (1.06in) each.
10. In the case of finely stranded wire, provide conductors L1, L2, L3 and, if applicable, N with a
bootlace ferrule.
11. Depending on the grid configuration, connect L1,
L2, L3 and, if necessary, N to the terminals
according to the label. To do so, position each
conductor as far as they will go into the
corresponding terminal and tighten the screw on the
terminal using a Torx screwdriver (TX30; torque for
a conductor cross-section of 25mm² to 95mm²:
14Nm (126in-lb)).
2
1
L1
L2
L3
N
12.
WARNING
Danger to life due to electric shock
The inverter is delivered with a bridge between N and the enclosure as standard. The
bridge is absolutely essential if the connection to a utility grid is established without a neutral
conductor.
If the connection to a utility grid is established with a neutral conductor, the bridge must
always be removed:
• When N is present and connected to the
corresponding terminal, remove the bridge
installed as standard between N and the
enclosure (
). To do so, unscrew the screw
of the terminal N and the screw of the
grounding point (
) using a Torx
screwdriver (TX30) and remove the bridge
from the inverter.
L1
L2
L3
N
13. Ensure that the correct conductors are assigned to all the terminals.
14. Make sure that all conductors are securely in place.
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.
☐ The maximum inverter system voltages permitted may not be exceeded (see Section10
"Technical Data", page56).
☐ The maximum short-circuit current may not be exceeded (see Section10 "Technical Data",
page56).
ENGLISH