SMA SC 500CP-US - Manual (Page 41)

SMA America, LLC 6 Preparation for Installation
Installation Manual SCCP-US-IA-US_en-41 41
6.3 Preparation for Installation on a Foundation
In this section, the installation of the inverter on a foundation is described. Read this section if you are installing the inverter
on a foundation.
6.3.1 Requirement for Foundation and Cable Arrangement
Requirements for the foundation:
☐ The foundation must be suitable for the weight of the inverter.
☐ The unevenness of the foundation must be less than 0.25%.
☐ Minimum dimensions: 9
3
⁄
16
ft. (2,800 mm) wide, 3 ft. 9
1
⁄
4
in. (1,150 mm) deep.
☐ The foundation must have a maximum tilt of 1% to allow rain water to drain away.
Requirement for openings in the foundation and cable arrangement:
☐ Openings for the cables must be located in the foundation
underneath the interface cabinet.
☐ Openings for the cables must designed for the connection of
conduits.
☐ The data cables must be kept separate from the AC and DC cables.
☐ A sufficient amount of openings must be available:
– AC cables: number according to the cable routing (see
Section 6.2.5)
– DC cables: in accordance with the number of DC cables
– Data cable: 1
– Grounding electrode conductor: 1
Laying the cables
This manual does not specify at what stage the cables are to be laid in the foundation. When the cables are laid
must be determined individually for each plant.
Example: Arrangement of the openings in the foundation
The number of cable openings in the foundation must be equal to the number of cables to be laid.
Figure 23: Arrangement of the cable openings (example)
Position Designation
A Openings for AC cables
B Openings for DC cables
C Openings for data cables
D Openings for grounding electrode