SMA SC 500CP-US Maintenance Manual - Manual (Page 36)

7 Maintenance in Disconnected State SMA America, LLC
36 SCCP-US-WH-US_en-30 Maintenance Manual
Procedure:
2. Check whether all screw connections for the power cabling are tight. In lieu of mechanical torque checks, inspect all
power cabling connections using thermal imaging as recommended by NFPA 70B and per ASTM E1934 and/or
ISO/AWI 10881. Baseline thermal imaging is recommended after initial startup and commissioning for
comparisons on an annual basis.
If screw connections are loose, tighten them with a torque wrench.
3. Check insulation and connections for discoloration and changed appearance.
If insulation and connections are discolored or changed, contact the SMA Service Line.
4. Check the screw connections for damage and contact elements for corrosion.
If screw connections are damaged or contact elements are corroded, contact the SMA Service Line.
1. '$1*(5
Danger to life due to electric shock or electric arc by touching live components
• Disconnect the inverter and wait 15 minutes until the capacitors have discharged completely (see Section 6).