Supplementary Conditions Which Apply When Dv/Dt-Filters Are Used - Siemens SINAMICS G130 Engineering Manual

Fundamental Principles and System Description
Engineering Information
The use of dv/dt filters plus VPL and dv/dt filters compact plus VPL is thus a suitable method of reducing the voltage
stress on the motor winding at line supply voltages of 500 V to 690 V to such an extent that special insulation in the
motor can be dispensed with. Bearing currents are also reduced significantly. Using these filters therefore allows
standard motors with standard insulation and without insulated bearing to be operated on SINAMICS up to line
supply voltages of 690 V. This applies to both Siemens motors and motors supplied by other manufacturers.
The table below specifies the permissible motor cable lengths for dv/dt filters plus VPL and dv/dt filters compact plus
VPL for SINAMICS G130, G150, S150 and S120 Motor Modules in Chassis and Cabinet Modules format.
Line supply voltage
du/dt-Filter plus VPL
380 V – 480 V 3AC
500 V – 600 V 3AC
660 V – 690 V 3AC
du/dt-Filter compact plus VPL
380 V – 480 V 3AC
500 V – 600 V 3AC
660 V – 690 V 3AC
Maximum permissible motor cable lengths with dv/dt filters plus VPL and dv/dt filters compact plus VPL
for SINAMICS G130, G150, S150 and SINAMICS S120 Motor Modules (Chassis and Cabinet Modules)
These cable lengths apply to drives on which only one motor is connected to the filter output. Longer motor cable
lengths can be used for drives with multiple motors at the filter output. Please refer to section "Motor reactors" for
information on how to calculate the permissible motor cable lengths drives with multiple motors. If this calculation
method is used for converters with dv/dt filters, it has to be taken in account that instead of the maximum number of
parallel cables n and the maximum cross-sections A
S max
the catalog have to be used.

1.10.2.2 Supplementary conditions which apply when dv/dt-filters are used

On G150 and S150 cabinet units and S120 Motor Modules in Cabinet Modules format, please note the following:
·
Above certain output power ratings, dv/dt filters plus VPL require an additional cabinet panel and thus increase
the cabinet dimensions (see Catalogs D 11 and D 21.3).
·
dv/dt filters compact plus VPL can generally be integrated into cabinet units without the need for an additional
cabinet panel.
It must be noted that the dv/dt filter plus VPL or dv/dt filter compact plus VPL should be mounted close to the
converter or inverter output in the case of SINAMICS G130 and S120 units in Chassis format. The cable length
between the filter and the output of the converter or inverter should not exceed 5 m.
The pulse frequency and output frequency must be limited for thermal reasons when dv/dt filters plus VPL and dv/dt
filters compact plus VPL are used:
·
The maximum permissible pulse frequency is limited to twice the factory setting value, i.e. to 4 kHz for units with
factory setting 2 kHz and to 2.5 kHz for units with factory setting 1.25 kHz.
·
The maximum permissible output frequency is limited to 150 Hz.
·
The minimum, continuously permissible output frequency is:
§ 0 Hz with dv/dt filters plus VPL
§ 10 Hz with dv/dt filters compact plus VPL
(Operation at output frequencies of < 10 Hz is permissible for 5 minutes maximum, if this is followed by a
period of operation at output frequencies of > 10 Hz for 5 minutes minimum).
SINAMICS Engineering Manual – November 2015
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Ó Siemens AG
Maximum permissible motor cable length
Shielded cable Unshielded cable
e.g. Protodur NYCWY e.g. Protodur NYY
300 m 450 m
300 m 450 m
300 m 450 m
100 m 150 m
100 m 150 m
100 m 150 m
max
the relevant recommended values n and A from
S rec rec