Siemens SINAMICS G130 Engineering Manual page 95

The table below specifies the permissible motor cable lengths with dv/dt filters plus VPL for SINAMICS G130, G150,
S150, S120 Motor Modules (Chassis and Cabinet Modules).
Line supply voltage
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 for SINAMICS G130, G150, S150
and SINAMICS S120 Motor Modules in format 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. Please refer to section "Motor reactors" for information on how to
calculate the permissible motor cable lengths for multi-motor drives. 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
maximum cross-sections A
In the case of cabinet units G150 and S150, it must also be noted that an additional cabinet is required for units
above a certain output rating. An additional cabinet is always needed for S120 Motor Modules in the format Cabinet
Modules.
The pulse frequency and output frequency must be limited for thermal reasons when dv/dt filters plus VPL are
installed:
•
The maximum 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 output frequency is limited to 150 Hz.
The voltage drop across the dv/dt filter plus VPL is approximately 1 %.
The dv/dt filter plus VPL should be sited in the immediate vicinity of the converter or inverter output. The cable length
between the dv/dt filter plus VPL and the output of the converter or inverter must not exceed 5 m.
dv/dt filters plus VPL must be selected with parameter setting P0230 = 2 when the drive is commissioned. This
ensures that optimum allowance will be made for the effect of the filter in the vector control model.
Restrictions do not apply to the permissible pulse patterns of the gating unit, i.e. pulse-edge modulation can be used
freely which means that the attainable output voltage is virtually identical to the input voltage.
dv/dt filters plus VPL can be used in both grounded systems (TN/TT) and non-grounded systems (IT).
Fundamental Principles and System Description
Maximum permissible motor cable length
with dv/dt filter plus VPL
Shielded cable
e.g. Protodur NYCWY
300 m
300 m
300 m
the relevant recommended values n
max
Engineering Information
Unshielded cable
e.g. Protodur NYY
450 m
450 m
450 m
and A from the catalog have to be used.
E rec rec
SINAMICS Engineering Manual - May 2008
© Siemens AG
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