SMA SC 500CP-10-JP Maintenance Manual - Manual (Page 23)

SMA Solar Technology AG 6 Maintenance under Voltage-Free Conditions
Maintenance Manual SCCP-JP-WA-A4-en-12 23
6.4.4 Checking the Bolted Connections of the Power Cabling
Procedure:
2. Open the inverter doors.
3. Check whether all bolted connections for the power cabling are tight.
If bolted connections are loose, tighten them using a torque wrench.
4. Check the insulation and connections for discoloration and changed appearance.
If insulation and connections are discolored or changed, contact the SMA Service Line.
5. Check the bolted connections for damage and contact elements for corrosion.
If bolted connections are damaged or contact elements corroded, replace them.
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Damage to bolted connections from over-tightening
• Only tighten loose bolted connections to the prescribed torque. Torque specifications are indicated in the circuit
diagram of the inverter. Contact the SMA Service Line if specifications are missing.
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Danger to life due to electric shock or electric arc by touching live components
• Switch off the inverter and wait at least 15 minutes it, until the capacitors have discharged completely.
• Disconnect the inverter (see Section 6.1).