Electrical Installation - Siemens SINAMICS G150 Operating Instructions Manual

Electrical installation

Important safety precautions
The line harmonics filters are operated with high voltages.
All connection procedures must be carried out when the cabinet is de-energized.
All work on the device must be carried out by trained personnel only.
Death, serious injury, or substantial material damage can result if these warnings are not
taken into account.
Work on an open device must be carried out with extreme caution.
The power and control terminals may be live even when the motor is not running.
Due to the capacitors, dangerously high voltage levels are still present in the cabinet up to
five minutes after it has been disconnected. For this reason, the cabinet should not be
opened until a reasonable period of time has elapsed.
The operator is responsible for ensuring that the motor, converter, and other devices are
installed and connected in accordance with the recognized technical rules in the country of
installation and applicable regional guidelines. Special attention should be paid to cable
dimensioning, fuses, grounding, shutdown, disconnection, and overcurrent protection.
If an item of protective gear trips in a branch circuit, a leakage current may have been
disconnected. To reduce the risk of fire or an electric shock, the current-carrying parts and
other components in the cabinet unit should be inspected and damaged parts replaced.
When an item of protective gear trips, the cause of the trip must be identified and rectified.
When the line harmonics filter is connected to a network with a line frequency of 60 Hz, the
cable jumpers must be removed in accordance with the instructions in the device (see
interface overviews below).
Tightening torques for connecting current-carrying parts
When securing connections for current-carrying parts (e.g. copper bars), you must observe
the following tightening torques.
Table 4-1
Line harmonics filters
Operating Instructions, 07/07, A5E01347987A
WARNING
Tightening torques for connecting current-carrying parts
Screw
M6
M8
M10
M12
4
Torque
6 Nm
13 Nm
25 Nm
50 Nm
19