L07, Dv/Dt Filter Compact Plus Voltage Peak Limiter - Siemens SINAMICS S120 Manual

8.24

L07, dv/dt filter compact plus Voltage Peak Limiter

Availability of option
This option is available for the following S120 Cabinet Modules:
● Motor Modules in chassis format
Description
The dv/dt filter compact plus Voltage Peak Limiter comprises two components: the dv/dt
reactor and the voltage-limiting network (Voltage Peak Limiter), which cuts off the voltage
peaks and feeds back the energy into the DC link. The dv/dt filter compact plus Voltage Peak
Limiter is designed for use with motors for which the voltage strength of the insulation
system is unknown or insufficient.
The dv/dt filter compact plus Voltage Peak Limiter limits the voltage load on the motor cables
to values in accordance with the limit value curve A in compliance with IEC/TS 60034-25.
The rate of voltage rise is limited to < 1600 V/µs, the peak voltages are limited to < 1400 V.
Note
Operation of standard motors with standard insulation and without insulated bearing is
possible on SINAMICS converters up to line supply voltages of 690 V.
Restrictions
The following constraints should be noted when a dv/dt filter compact plus Voltage Peak
Limiter is used:
● The output frequency is limited to no more than 150 Hz.
● Maximum permissible motor cable lengths:
Load at low output frequencies
When a dv/dt filter compact plus Voltage Peak Limiter is used, the drive must not be
operated in uninterrupted duty with an output frequency lower than 10 Hz.
A maximum load duration of 5 minutes at an output frequency lower than 10 Hz is
permissible, provided that the drive is operated with an output frequency higher than 10 Hz
for a period of 5 minutes thereafter.
Uninterrupted duty at an output frequency less than 10 Hz can produce thermal overload
and destroy the dv/dt filter.
Cabinet Modules
Manual, 03/2013, A5E03263538A
– Shielded cables: max. 100 m (e.g. Protodur NYCWY)
– Unshielded cables: max. 150 m (e.g. Protodur NYY)
WARNING
8.24 L07, dv/dt filter compact plus Voltage Peak Limiter
Options
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