Line Reactors; Description; Safety Instructions For Line Reactors - Siemens SINAMICS S120 Equipment Manual

4.7

Line reactors

4.7.1

Description

The line reactors limit low-frequency line harmonics and reduce the load on the rectifiers in
the Power Modules. They are used to smooth voltage spikes (line supply faults) or to bridge
voltage dips/interruptions when commutating. This is why we recommend that line reactors
are used in conjunction with Power Modules in the blocksize and chassis formats.
PM240-2 FSD to FSG Power Modules have an integrated DC link reactor - and therefore do
not require a line reactor.
4.7.2

Safety instructions for line reactors

Electric shock in the event of missing touch protection
Touching live components can result in death or serious injury.
• For the line reactors, use touch protection according to IPXXA or corresponding to the
Fire through overheating due to insufficient ventilation clearances
Insufficient ventilation clearances can result in overheating with danger to persons as a
result of smoke and fire. Further, increased failures can occur and the service life of
components shortened.
• Maintain 100 mm ventilation clearances above and below the component.
Burns resulting from high surface temperature of the line reactor
The surface temperature of the line reactors may exceed 80° C. Contact with the surface
will cause you to suffer severe burn injuries.
• Mount the line reactor so that it cannot be touched. If this is not possible, at the
AC Drive
Manual, 06/2019, 6SL3097-5AL00-0BP1
WARNING
local installation regulations.
WARNING
CAUTION
dangerous locations, attach an appropriate warning note that is clearly visible and easy
to understand.
Mains connection and line-side power components
4.7 Line reactors
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