Siemens SINAMICS G220 Operating Instructions Manual page 170

Connecting
7.1 Line system, motor and braking resistor
Requirement
The following requirements apply when the housing cover is removed:
• Switch off the converter power supply.
• Comply with ESD regulations.
• Required tools:
– Torx screwdriver T20
Damage to the converter when connected to an IT line system
The converter will be damaged if it is operated with integrated line filter on an IT line system.
• Open the ground connection of the integrated line filter.
Electric shock as a result of a residual charge in power components
After the power supply has been switched off, it takes up to 5 min. until the capacitors in the
converter have discharged so that the residual charge is at a non-hazardous level. Touching live
components can result in death or severe injury.
• Check that there is absolutely no voltage between any of the power connections, or
Procedure
Proceed as follows to open the ground connection of the integrated line filter:
1. Release the screws of the converter housing cover.
The screws are connected to the housing cover and are captive.
2. Remove the housing cover.
168
CAUTION
WARNING
between them and the protective conductor connection.
Operating Instructions, 04/2024, FW V6.2, A5E51781573B AB
SINAMICS G220 converter