Line Reactors; Description; Safety Information - Siemens SINAMICS S120 Equipment Manual

2.4

Line reactors

2.4
2.4.1

Description

The line reactors limit lower-frequency harmonics that are fed back into the line supply. They
are used to smooth voltage spikes (line supply faults) or to bridge voltage dips/interruptions
when commutating. This is the reason that we recommend line reactors in conjunction with
PM340 and Power Module Chassis.
2.4.2

Safety information

Caution
The cooling clearances of 100 mm above and below the components must be observed.
Note
The connecting cables to the Power Module must be as short as possible (max. 5 m).
If possible, they should be shielded.
Caution
The terminals must be correctly connected:
- Incoming line cable to 1U1, 1V1, 1W1, and
- Outgoing cable to the load 1U2, 1V2, 1W2.
Non-observance may damage the line reactor.
Caution
When using line reactors that have not been approved by SIEMENS for SINAMICS, the
following can occur:
- the Power Modules could be damaged/destroyed.
- Line harmonics that may interfere with or damage other loads connected to the same line
supply.
Caution
The surface temperature of the line reactors may exceed 80 °C.
Equipment Manual AC Drive
Manual, (GH6), 03/2006 Edition, 6SL3097-2AL00-0BP0
Line-side power components
2.4 Line reactors
2-15