SMA SC 500CP-US - Manual (Page 40)

6 Preparation for Installation SMA America, LLC
40 SCCP-US-IA-US_en-41 Installation Manual
Cable Arrangement for AC Cables Shorter than 6.5 ft. (2 m)
Arrange the cables as shown in the following figure for each number of cables having a length shorter than 6.5 ft. (2 m).
The description is provided as an example for an arrangement with four cables per line conductor. The distance between
the cables should be twice the diameter of a single cable.
Figure 20: AC cable arrangement 1
Cable Arrangement for AC Cables Longer than 6.5 ft. (2 m)
Arrange all cables with a length of over 6.5 ft. (2 m) as shown in the following figure. The description is provided as an
example for an arrangement with four cables per line conductor.
For AC cable arrangement 1: The distance between the cables should be twice the diameter of a single cable.
Figure 21: AC cable arrangement 2
Figure 22: AC cable arrangement 3
Requirement:
☐ The AC cables must be bundled in the three-phase system.
☐ Between the medium-voltage transformer and the inverter there must be three separate cable routes for the AC
cables, e.g. cable channels.
Procedure:
• Lay one A, B and C line conductor in each cable route. Ensure the distance between the cable bundles is at least
double that of the diameter of a cable. This prevents current imbalances.*
6 If possible: AC cable arrangement 3
Otherwise: AC cable arrangement 1
* For further information, see the Technical Information "Cable Set ‒ Requirements for and Laying of Cables between SUNNY CENTRAL CP
and TRANSFORMER COMPACT STATION"
Number of cables per
line conductor
AC cable arrangement