Motor-Side Power Components; Motor Reactors; Description; Safety Information - Siemens SINAMICS S120 Equipment Manual

Motor-side power components

6.1

Motor reactors

6.1
6.1.1

Description

Motor reactors reduce the voltage stress on the motor windings by reducing the voltage
gradients at the motor terminals that occur when motors are fed from drive converters. At the
same time, the capacitive re-charging currents that additionally load the output of the Power
Module when longer motor cables are used are simultaneously reduced.
Conditions
• Ambient temperature 40 °C.
• Pulse frequency f
• Output frequency f
• If the total shielded cable length in the drive group (drive line-up) is more than 250 m,
• If the total non-shielded cable length in the drive group (drive line-up) is more than 400 m,
• Only valid for vector operating mode.
• Supported in Starter from Version 2.4 up to 1 motor reactor.
• Supported in Starter from Version 2.5 up to 3 motor reactors.
6.1.2

Safety information

Caution
The 100 mm clearances above and below the components must be observed.
Note
The connecting cables to the Motor Module must be kept as short as possible (max. 5 m).
Equipment Manual for Booksize Power Units
Equipment Manual, (GH2), 03/2006 Edition, 6SL3097-2AC00-0BP3
=4 kHz.
max
=120 kHz.
max
then a Voltage Clamping Module or an HFD-R reactor must be used.
then a Voltage Clamping Module or an HFD-R reactor must be used.
6
6-1