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

6.2

Motor reactors

6.2.1

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 charge/discharge currents that also occur on the output of the
Motor Module when long motor cables are used are reduced.
6.2.2

Safety information

CAUTION
The 100 mm cooling clearances above and to the side of the components must be
observed.
Note
The connecting cables to the Motor Module must be kept as short as possible (max. 5 m).
CAUTION
Using motor reactors not approved by SIEMENS for SINAMICS can result in thermal
damage to the reactor.
The surface temperature of the motor reactors can exceed 80 °C.
CAUTION
If a motor reactor is connected to the Motor Module, it is essential that it is activated during
commissioning (p0230 = 1).
CAUTION
The maximum permissible output frequency when sine-wave filters are used is 150 Hz.
CAUTION
The maximum permissible pulse frequency when motor reactors are used is 2.5 Hz or
4 kHz.
Chassis power units
Manual, (GH3), 10/2008, 6SL3097-2AE00-0BP3
CAUTION
Motor-side power components
6.2 Motor reactors
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