Additionally required mounting material (not included in the scope of delivery):
☐ Ground electrode in accordance with the grounding concept of the PV system
☐ Clean cloth
☐ Ethanol cleaning agent
☐ Terminal lugs suitable for the selected cable cross-section
☐ Non-woven abrasive
Procedure:
1. Install the ground electrodes in accordance with the applicable regulations.
2. Ensure that the required grounding resistance is achieved.
3. If insulated grounding cables are used, strip off the insulation.
4. Fit the grounding cables with terminal lugs.
5. Clean the contact surfaces of the terminal lugs with a clean cloth and ethanol cleaning agent.
6. Clean the contact surfaces with the non-woven abrasive until they have a light metallic sheen. Ensure that the
coated contact surfaces are not damaged.
7. Remove metal dust using a clean cloth and ethanol cleaning agent and do not touch the contact surfaces again
after cleaning.
8. Connect the grounding cable for grounding the oil tray to the grounding bolt of the oil tray (M13, torque:
15Nm).
9. Connect the grounding cable for grounding the oil tray to the grounding busbar of the MVPowerStation.
10. Connect the grounding cable for the ground electrode to the grounding busbar of the MVPowerStation.
11. Connect the grounding cable for the ground electrode to the ground electrode.
5.5 Installing the AC Connection
Depending on the order option, the AC connection must be installed on the medium-voltage switchgear or the MV
transformer. You must select the relevant section.
5.5.1 Installing the AC Connection on the Medium-Voltage Switchgear
Requirements:
☐ The cables must be inserted through the base plate (see Section12.4, page167). It is recommended using plastic
tubes without grooves in order to allow easier insertion of the cables.
Procedure:
• Connect the cables to the medium-voltage switchgear (see documentation for the medium-voltage switchgear).
5 Installation
SMA Solar Technology AG
System ManualMVPS22JP-SH-en-1158
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