Siemens SINAMICS G150 Operating Instructions Manual page 612

Maintenance and servicing
11.2 Maintenance
Danger to life if the fundamental safety instructions and remaining risks are not carefully
observed
The non-observance of the fundamental safety instructions and residual risks stated in
Chapter 1 can result in accidents with severe injuries or death.
• Adhere to the fundamental safety instructions.
• When assessing the risk, take into account residual risks.
Danger to life through electric shock due to the residual charge of the DC link capacitors
Because of the DC link capacitors, a hazardous voltage is present for up to five minutes
after the power supply has been switched off.
Contact with live parts can result in death or serious injury.
• Only open the device after five minutes have elapsed.
• Measure the voltage before starting work on the DCP and DCN DC link terminals.
Danger to life due to electric shock from external supply voltages
When the external power supply for individual options (L50 / L55) or the external 230 V AC
auxiliary supply is connected, dangerous voltages are still present at the components even
when the main switch is open.
Contact with live parts can result in death or serious injury.
• Switch off any external supply voltages and the external 230 VAC auxiliary supply
Danger to life from live parts and components for devices connected in parallel
Touching live components of sub-cabinets associated with devices connected in parallel
can result in death or severe injury.
• When connecting, installing and repairing, electrically disconnect both partial cabinets
612
WARNING
DANGER
DANGER
before opening the device.
WARNING
from the line supply.
Converter cabinet units
Operating Instructions, 07/2016, A5E03347396A