SMA SC 500CP-US - Manual (Page 14)

2 Safety SMA America, LLC
14 SCCP-US-IA-US_en-41 Installation Manual
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 Hazard Risk Category 2 personal protective equipment.
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Danger to life from electric shock when the inverter is not locked
If the inverter is not locked, this means that unauthorized persons have access to components carrying lethal voltages.
Touching live components may result in death or serious injury due to electric shock.
• Always close and lock the inverter.
• Remove the keys from the door locks and from the key switch.
• Keep the keys in a safe place.
• Ensure that unauthorized persons do not have access to the PV plant.
Danger to life due to blocked escape routes
In hazardous situations, blocked escape routes can lead to death or serious injury. Opening the doors of two inverters
located opposite each other blocks the escape route. It is imperative that the escape route is freely accessible at all
times.
• An escape route of at least 3 ft. (915 mm) width must be available at all times. Make sure the minimum passage
width of the route meets local standards.
• Do not place any objects in the escape route path.
• Remove all tripping hazards from the escape routes.
• If two inverters have been installed facing each other, never open the doors of both inverters simultaneously.
Risk of fire due to failure to observe torque specifications on high-voltage bolted connections
Failure to follow the specified torques reduces the ampacity of the live screw connections so that the contact resistances
increase. This can cause components to overheat and catch fire.
• Ensure that high-voltage bolted connections are always executed with the exact torques specified in this document.
• Use suitable tools when working on the device.
• Avoid repeated tightening of high-voltage bolted connections, as this may result in inadmissibly high torques.
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