SMA SSM-U-1615 - Manual (Page 27)

Position Designation
E Electronic assembly
F Strain relief for the cables
6.2 Grounding
6.2.1 Information on Grounding
The parts to be grounded can be connected to a joint grounding electrode.
6.2.2 Grounding the Electronic Assembly
Cable requirement:
☐ Conductor cross-section: 6 mm 2
Procedure:
1. Lead the grounding cable through the corresponding enclosure opening (see Section 6.1,
page 25) into the DC subdistribution (see Section 12.1, page 62).
2. Strip the grounding cable by 15 mm. Make sure that no pieces of cable are dropped into the
DC subdistribution.
3. Connect the grounding cable to the electronic assembly at screw terminal X8 FE (see
Section 4.4, page 17) to ground the electronic assembly.
4. Ensure that the grounding cable is securely fixed.
5. Attach the grounding cable to the strain relief in the DC subdistribution using a cable tie.
6. Ground the grounding cable in the vicinity of the DC subdistribution, e.g. by means of a
grounding electrode.
6.2.3 Grounding the DC Surge Arrester
In order to guarantee the function of the DC surge arrester, it must be connected to the external
grounding.
Cable requirements:
☐ Conductor cross-section: 16 mm 2 to 35 mm 2
☐ Recommended cable type: NYY-O
Procedure:
1. Lead the grounding cable through the corresponding enclosure opening (see Section 6.1,
page 25) into the DC subdistribution (see Section 12.1, page 62).
2. Strip the grounding cable by 15 mm. Make sure that no pieces of cable are dropped into the
DC subdistribution.
3. Route the grounding cable in the cable channel to the connecting terminal plate for functional
grounding of the DC surge arrester (see Section 4.4, page 17). To do this, you can remove
and reattach the cover of the cable channel.
6 Installation SMA Solar Technology AG
Operating Manual 27 SSMUXX15-BE-en-10