SMA SC 500CP-US Maintenance Manual - Manual (Page 26)

6 Disconnecting the Inverter SMA America, LLC
26 SCCP-US-WH-US_en-30 Maintenance Manual
Procedure:
1. Switch the key switch of the inverter to Stop..
2. If an Integrated DC Switch is present, switch the DC Switch in the
door to OFF.
☑ The red light repeater lights up.
Danger to life from electric shock if the inverter is damaged
Operating a damaged inverter can lead to hazardous situations that result in death or serious injuries due to electric
shock.
• Only use the inverter when it is technically faultless and in an operationally safe state.
• Regularly check the inverter for visible damage.
• Make sure that all external safety equipment is freely accessible at all times.
• Make sure that all safety equipment is in good working order.
• Wear Hazard Risk Category 2 personal protective equipment for all work on the inverter.
Danger to life from electric shock even if the inverter is disconnected on the AC and DC sides
The precharge unit of the option "Q at Night" is also live if the AC contactor and the DC switch are open. Touching live
components of this assembly will result in death or serious injury.
• Do not touch live components.
• Do not remove protective covers.
• Observe the warning messages.
• Wear personal protective equipment
Hazard Risk Category 2 protective equipment required
In accordance to NFPA 70E, an arc flash hazard risk analysis has been performed by SMA, and appropriate Arc
Flash Hazard labels stating the required Personal Protective Equipment (PPE) for exposed, energized interaction with
the equipment, are installed. Hazard Risk Category 2 PPE is the requirement for all routine maintenance, diagnostics,
and commissioning activities as described in the SMA protocols. Areas within the machine also exist that cannot,
under any circumstances, be exposed while energized. These areas are marked accordingly on the machine, and
can only be made accessible after de-energization of the inverter.
For additional information, please contact the SMA Service Line.
Disconnecting the AC voltage of the MV transformer
Only a duly authorized person trained in electrical safety is allowed to connect and disconnect the AC voltage of
the MV transformer.
'$1*(5