Sinusoidal Filter; Chassis; Description; Safety Information - Siemens SINAMICS S120 Equipment Manual

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5.2

Sinusoidal filter

5.2
5.2.1

Chassis

5.2.1.1

Description

The sinusoidal filter at the output of the Power Module supplies voltages that are virtually
sinusoidal at the motor, thereby enabling standard motors to be used without shielded cables
and without the need to reduce the power. Non-shielded cables can be used and, if long
motor supply cables are used, no additional motor reactors are required.
Sinusoidal filters with a power rating of up to 200 kW are available
The pulse frequency of the Motor Modules must be set to 4 kHz for the sinusoidal filters. This
reduces the output current of the Power Module, refer to Chapter Technical data.
When a sinusoidal filter is used, the available output voltage decreases by 15 %.
5.2.1.2

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 kept as short as possible (max. 5 m).
Caution
Using sinusoidal filters that have not been approved by SIEMENS for SINAMICS can:
• damage/destroy the Power Modules
• cause line harmonics that may interfere with or damage other loads connected to the
Caution
The sinusoidal filters can have surface temperatures of over 80 °C.
Equipment Manual AC Drive
Manual, (GH6), 03/2006 Edition, 6SL3097-2AL00-0BP0
same line supply.
Motor-side power components
5.2 Sinusoidal filter
5-19

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