SMA SC 500HE-US Maintenance Manual - Manual (Page 31)

SMA America, LLC 4 Maintenance
Maintenance Manual SC500HEUS-eng-WH-IUS120411 31
4.3.10 Checking the Connection of the Power Cables Using
Terminal Lugs (Optional)
Requirement:
☐ The inverter must be disconnected (see 4.3.1 "Disconnecting the Inverter", page 19).
Figure 8: Position of the power cables in the terminal lug option
/05*$&
Damage to screw connections from over-tightening
• Only tighten loose screw connections with the prescribed torque. Torque specifications are
shown in the installation manual of the inverter. Contact the SMA Service Line if specifications
are missing.
Position Designation
A For negative grounding: DC −
For positive grounding: DC+
B For positive grounding: DC −
For negative grounding: DC+