Siemens SINAMICS G150, Operating Instructions Manual

Page: 614 / 680

Maintenance and servicing
11.3 Maintenance
Converter cabinet units
614
Operating Instructions, 07/2016, A5E03347396A
11.3 Maintenance
Servicing involves activities and procedures for maintaining and restoring the specified
condition of the device.
Required tools
The following tools are required for replacing components:
● Standard set of tools with screwdrivers, screw wrenches, socket wrenches, etc.
● Torque wrenches 1.5 Nm up to 100 Nm
● 600 mm extension for socket wrenches
Tightening torques for screw connections
The following tightening torques apply when tightening current-conducting connections (DC
link connections, motor connections, busbars, lugs) and other connections (ground
connections, protective conductor connections, steel threaded connections).
Table 11- 1 Tightening torques for screw connections
Thread Ground connections, protective
conductor connections, steel
threaded connections
Aluminum threaded connections,
plastic, busbars, lugs
M3 1.3 Nm 0.8 Nm
M4 3 Nm 1.8 Nm
M5 6 Nm 3 Nm
M6 10 Nm 6 Nm
M8 25 Nm 13 Nm
M10 50 Nm 25 Nm
M12 88 Nm 50 Nm
M16 215 Nm 115 Nm
Note
Screw connections for protective covers
The threaded connections for the protective covers made of Makrolon may only tightened
with 2.5 Nm.