SMA SC 500CP-US Maintenance Manual - Manual (Page 45)

SMA America, LLC 9 Maintenance when Control Voltage is Present
Maintenance Manual SCCP-US-WH-US_en-30 45
3. Switch the circuit breaker of the grid monitoring on.
4. Switch on the circuit breaker of the 24 V circuits.
5. Close the test and disconnect terminals.
9 Maintenance when Control Voltage is Present
9.1 Safety
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Danger to life due to electric shock
High voltages are present in the conductive components of the inverter. Touching live components results in death or
serious injury due to electric shock.
• Switch the inverter key switch to the Stop position and ensure that the device cannot be accidentally reconnected.
• After disconnecting the inverter from voltage sources, wait at least 15 minutes for the capacitors of the
Sunny Central to discharge completely.
• Do not touch any live components in the inverter or the medium-voltage grid. Comply with all applicable safety
regulations for handling medium-voltage grids.
• Wear Hazard Risk Category 2 personal protective equipment.
• Always perform work in compliance with the regulations specified in 29 CFR, Chapter XVII, Part 1910 (OSHA),
NEC, and NFPA 70E.