Dv/Dt Filter Plus Voltage Peak Limiter - Siemens SINAMICS S120 Manual

9.26

dV/dt filter plus Voltage Peak Limiter

Availability of option
This option is available for the following S120 Cabinet Modules:
● Motor Modules
Description
The dv/dt filter plus Voltage Peak Limiter comprises two components: the dv/dt reactor and
the voltage-limiting network (Voltage Peak Limiter), which limits the voltage peaks to the
level of the DC-link voltage and returns energy to the DC link.
The dv/dt filters plus Voltage Peak Limiter must be deployed for motors for which the proof
voltage of the insulation system is unknown or insufficient. Standard motors of the 1LA5,
1LA6, and 1LA8 series only require them at supply voltages > 500 V + 10%.
The dv/dt filter plus Voltage Peak Limiter limits the voltage rates of rise to values < 500 V/µs
and the typical voltage peaks to the following values (for motor cable lengths < 300 m for
frame sizes FXL, GXL, HXL or < 150 m for frame size JXL):
< 1000 V at U
< 1250 V at 660 V < U
The dv/dt filter plus Voltage Peak Limiter is installed in an additional cabinet with a width of
600 mm that is located on the right-hand side of the Motor Module.
Note
Parts of the dv/dt filter plus Voltage Peak Limiter do not have nickel-plated copper busbars.
Note
Cabinet width
The width of the Motor Module cabinet is reduced by 200 mm. The additional components
are installed in a supplementary cabinet, 600 mm wide. The motor cables also connected in
this supplementary cabinet.
Restrictions
The following restrictions must be taken into account when a dv/dt filter is used:
● The output frequency is limited to no more than 150 Hz.
● Maximum permissible motor cable lengths:
– Shielded cable: max. 300 m (frame sizes FXL, GXL, HXL) / 150 m (frame size JXL)
– Unshielded cable: max. 450 m (frame sizes FXL, GXL, HXL) / 225 m (frame size JXL)
Cabinet Modules liquid cooled
Equipment Manual, 04/2020, A5E37067587A
< 575 V
line
< 690 V.
line
9.26 dV/dt filter plus Voltage Peak Limiter
Options
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