Installation Manual

Procedure:

Danger to life due to high voltages

When exposed to sunlight, the PV array generates dangerous DC voltage which is present in

the DC conductors. Touching the DC conductors can lead to lethal electric shocks.

• If an external DC disconnecting switch is available, open the external DC disconnecting

switch.

• If there is no external DC disconnecting switch, cover the PV modules with opaque

material (e.g. foil).

• Ensure that the DC load-break switch on the inverter is in the O position.

• Ensure that there is no voltage on the DC cables of the PV array.

2. Remove the adhesive tape from the enclosure opening for the DC connection and, if other

enclosure openings are to be used, take the sealing plugs out of these enclosure openings.

3. Insert the conduit fitting into the opening and tighten from the inside using the counter nut.

4. Attach the conduit to the conduit fitting.

5. Guide the conductors from the conduit into the inverter. In the process, lay the conductors in

the inverter such that they do not come into contact with the communication assembly.

6. Connect each equipment grounding conductor of the PV array to an equipment grounding

terminal:

• Strip the insulation of the equipment grounding conductor by 18mm (0.71in).

• Thread the screw through the spring lock washer, the clamping bracket and the washer.

• Guide the equipment grounding conductor

between the washer and clamping bracket

and tighten the screw with a Torx

screwdriver (TX 25) (torque: 6Nm ±

0.3Nm (53.10in-lb ± 2.65in-lb)). Here,

the equipment grounding conductor must

have contact with an inner edge of the

clamping bracket.

• If two equipment grounding conductors are

to be connected to one equipment

grounding terminal, guide both equipment

grounding conductors between the washer

and clamping bracket and tighten the screw

with a Torx screwdriver (TX 25) (torque:

6Nm ± 0.3Nm (53.10in-lb ± 2.65in-lb)).

Here, every equipment grounding

conductor must have contact with an inner

edge of the clamping bracket.

7. Plug the connecting terminal plate for the DC connection into the DC-in slot in the inverter.

While doing so, only touch the connecting terminal plate on the black enclosure.

6 Electrical Connection

SMA Solar Technology America LLC

Installation manualSB5.0-6.0-1SP-US-40-IA-xx-1034

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