Line Reactors; Description; Safety Information - Siemens SINAMICS S120 Combi User Manual

Line-side power components

2.7 Line reactors

2.7 Line reactors
2.7.1

Description

Line reactors for the S120 Combi limit low-frequency line harmonics to permissible values.
For this reason, line reactors should always be used.
2.7.2

Safety information

CAUTION
Only the line reactors described in this Manual must be used.
The following can occur if line reactors are used that have not been approved for
SINAMICS S120 Combi by SIEMENS:
- The infeed in the S120 Combi may be damaged/destroyed.
- Line harmonics may occur that damage/destroy loads connected to the same line supply.
The line reactors may reach high surface temperatures of > 80 °C. To prevent adjacent
components from being damaged due to these high temperatures, a clearance of 100 mm
must be maintained around the reactors.
If this clearance cannot be observed, additional measures such as shielding plates or a
cooling must be provided.
CAUTION
Reactors generate magnetic fields. Components and cables which could be subject to
interference or be affected by these fields must, therefore, be located a sufficient distance
(at least 200 mm) away or be shielded accordingly.
Note
Connecting cables
The connecting cables between the line reactor and S120 Combi must be kept as short as
possible.
If at all possible, shielded connecting cables should be used.
When using unshielded connecting cables, the cores must be protected from rubbing against
the shield connection clip.
Do not route any cables near the line reactor. If this cannot be avoided, observe a minimum
distance of 200 mm.
40
CAUTION
SINAMICS S120 Combi
Manual, Edition 07/2012, 6SL3097-4AV00-0BP3