Mechanical installation
3.3 Installation
Cabinet Modules NEMA
54 Manual, 04/2014, A5E03586450A
To install the connections, you will need:
● Standard toolbox with screwdrivers, screw wrenches, socket wrenches, etc.
● Torque wrench from 1.5 Nm to 100 Nm
● 400 mm extension for socket wrench
Tightening torques for screw connections
The following tightening torques apply when tightening current-conducting connections (DC-
link connections, motor connections, busbars, cable lugs) and other connections (ground
connections, protective conductor connections, steel threaded connections).
Table 3- 2 Tightening torques for screw connections
Ground connections, protective
conductor connections, steel
threaded connections
Aluminum threaded connections,
plastic, busbars, cable lugs
M4 3 Nm 1.8 Nm
M6 10 Nm 6 Nm
Screw connections for protective covers
The screw connections for the protective covers made of Makrolon may only be tightened
with 2.5 Nm.