Line connection and line-side power components
3.8 Line reactors
Booksize Power Units
98 Manual, (GH2), 04/2014, 6SL3097-4AC00-0BP6
Damping resistor for HFD line reactors
3.8.4.1
Description
Using a damping resistor
In some systems, oscillations can be generated which place an impermissibly high strain on
the insulation systems of the motors and converters involved. Connecting a damping resistor
to the additional winding of the HFD line reactor is an effective means of damping just such
system oscillations.
new systems using Active Line Modules should be designed with Active Interface
Modules as line connection components.
Safety instructions for damping resistors for HFD reactors
Risk of burns due to high surface temperatures of the damping resistor
The damping resistor can become very hot. You can get seriously burnt when touching the
surface.
• Mount the damping resistors so that contact is not possible. If this is not possible, attach
a clearly visible and understandable warning notice at hazardous positions.
• To prevent adjacent components from suffering damage due to these high
temperatures, maintain a clearance of 100 mm on all sides of the damping resistors.
If possible, mount the damping resistors externally, i.e. outside of the control cabinet.
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