SMA SC 4000 UP, Service Manual

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2 Safety SMA Solar Technology AG
Service Manual for Installers SC-UP_SCS-UP_EZE-SG-en-10 8
WARNING
Danger to life due to electric shock when the internal power supply is switched off
After switching off the internal power supply at the load-break switch -Q62 , lethal voltages are still present in the
cables to load-break switch -Q62 Only after the power path has been enabled are all cables of the internal power
supply de-energized. Touching live components can result in death or serious injury due to electric shock.
• Disconnect the inverter from the power path and ensure that it cannot be reconnected.
• Do not touch the orange cables in the inside of the product. These cables are used for connecting the external
supply voltage and can be dangerous to touch.
• Wear suitable personal protective equipment of the corresponding hazard risk category for all work when the
power transmission path is connected. The hazard risk categories of the various areas of the product are
different.
WARNING
Danger to life due to electric shock if external supply voltage is not disconnected
When using an external supply voltage, even after disconnecting the inverter, there may still be lethal voltages
present in cables. Touching live components can result in death or serious injury due to electric shock.
• Disconnect the external supply voltage.
• Do not touch the orange cables in the inside of the product. These cables are used for connecting the external
supply voltage and can be dangerous to touch.
• Wear suitable personal protective equipment of the corresponding hazard risk category for all work when the
power transmission path is connected. The hazard risk categories of the various areas of the product are
different.
WARNING
Hearing impairment due to high-frequency noises of the product
The product generates high-frequency noises during operation. This can result in hearing impairment.
• Wear hearing protection.
WARNING
Danger to life due to electric arc if there are tools inside the product
When reconnecting or during operation, an electric arc can occur if there are tools in the product creating a
conductive connection between the live components. This can result in death or serious injury.
• Before commissioning or reconnection, verify that no tools are inside the product.
CAUTION
Risk of burns due to hot components
Some components of the product can get very hot during operation. Touching these components can cause burns.
• Observe the warnings on all components.
• During operation, do not touch any components marked with such warnings.
• After switching off the product, wait until any hot components have cooled down sufficiently.
• Wear suitable personal protective equipment for all work on the product.