SMA SC 500HE-US Installation - Manual (Page 73)

SMA America, LLC 9 Commissioning
Installation Manual SC500HEUS-IA-US_en-14 73
9 Commissioning
This section explains, step-by-step, how to put the Sunny Central into operation, and how you can
determine that the commissioning was successful.
9.1 Visual Inspection of the Sunny Central
1. Ensure that all AC and DC voltages are not connected to the inverter.
2. Wait 8 minutes for all internal power supplies to discharge.
3. Check voltage in order to ensure that all voltages have been removed.
4. Inspect all large power cables and bus connections throughout the inverter to verify that they
are tight.
5. Verify that all PV wires are connected with the proper polarity.
6. Verify that all PV wires are tightened to the proper torque specification.
7. Verify that the PV ground wires are connected to ground and are isolated from PV+ or PV–.
8. Verify that the AC phase wires are connected correctly.
9. Verify that all AC phase wires are tightened to the proper torque specification.
10. Verify that the AC ground wire is connected correctly.
11. Inspect the interior of the Control and Interface Cabinet and the Power Cabinet to insure that
they are free of any tools, foreign objects, water, debris or documents.
12. Ensure that the area around the Sunny Central is clear of any tools, foreign objects or debris.
13. Check the AC connection for a possible clockwise phase sequence. For this purpose, hold the
terminals of the phase sequence indicator onto the three phases of the AC connection in the
Sunny Central. The indicator shows you whether there is clockwise phase sequence.
%"/(&3
Electric shock due to improper startup of the Sunny Central.
Death resulting from burning and electric shock.
• All procedures described in this section shall only be conducted by qualified personnel.
• If problems occur when performing the work described here, contact SMA America.
Application to Energy Supply Company
Before you commission the Sunny Central, inform the relevant energy provider. You must submit
the following information:
• Date of commissioning.
• Technical data of the plant.