SIEMENS
SINAMICS G180
Option descriptions
Standard options
4/16
Siemens D 18.1 · 2014
4
■
Options
(continued)
L10, L14, L15, L16 and L17
Output filter
Inadmissible option combinations
L14
,
L15
,
L16
,
L17
L10
Strengthened d
v
/d
t
output filter for max. 250/300 m
(type-dependent) – design for longer motor cables
available on request
L10
Output filter (example of filter reactor)
All SINAMICS G180 converters are fitted with a d
v
/d
t
filter as
standard that are suitable for motor cable lengths (depending on
the power rating, see technical data) from 100 to 200 m typically.
Standard motors with standard insulation can be used.
With option
L10
a strengthened d
v
/d
t
output filter is selected.
The strengthened d
v
/d
t
output filter typically extends the possi-
ble motor cable length (depending on the power rating, see
technical data) as follows:
•
Shielded cables: 250 to 300 m (e.g. NYCWY)
•
Unshielded cables: 300 to 450 m (e.g. NYY)
These cable lengths are based on worst-case conditions. If the
motor cable lengths are longer in a special case, the feasibility
can be checked in the factory. The cable types, their number
and length must be known for this purpose.
Method of operation:
The d
v
/d
t
filter in SINAMICS G180 limits the voltage gradient
(d
v
/d
t
) and the peak voltage
Û
LL
for the motor winding to the
following values:
•
Voltage gradient d
v
/d
t
< 1500 V/μs
•
Peak voltages
Û
LL
(typically) < 1560 V
Various explosion protection regulations (ATEX) specify a
maximum permissible average peak voltage at the motor
(IEC 60034-25-A) of 1560 V (LHX2 motor winding) and a
permissible maximum terminal voltage at the motor
(explosion-proof motors only) of 1866 V.
Design:
SINAMICS G180 d
v
/d
t
filters mainly comprise a d
v
/d
t
reactor
and a voltage limiting network that limits the voltage peaks.
Reduction of voltage peaks using d
v
/d
t
filters normally obviates
the need for special insulation of the motors. The filter also has a
positive effect on the bearing currents (reduction of bearing
currents).
Voltage drop:
The voltage drop in the converter is compensated using the
"Overmodulation" software function in which case the output
voltage of the converter is almost equal to the input voltage.
L14
Sine-wave filter integrated in control cabinet or
additional cabinet, suitable for motor frequencies of
≤
75 Hz,
voltage drop approx. 10 % of the line voltage
L14
Sine-wave filter (example shown)
With option
L14
a sine-wave filter for motor frequencies of
≤
75 Hz is integrated in the control cabinet.
Sine-wave filters should largely suppress the clock-frequency
harmonics at the motor terminals to the extent that the voltage
approximates a sinusoidal wave. They are implemented as LC
networks.
Due to the large voltage drop of a sine-wave filter, it should nor-
mally be checked before it is used whether a d
v
/d
t
filter would
suffice for the application case. To check this, please send the
necessary data (cable length, cable type, cable cross-section,
number of parallel cables) to your Siemens contact person.
Note:
The voltage drop at the sine-wave filter can cause an unaccept-
able temperature rise in the motor.
Voltage drop approximately 10 % of the line voltage.
The voltage drop can be compensated by using a sine-wave
filter with a step-up transformer. If this is required, please ask
your Siemens contact person.
The cabinet dimensions may increase as a result.
Output filter
L10
L14
L15
L16
L17
Strengthened d
v
/d
t
output filter
L10
Sine-wave filter in control
cabinet, 75 Hz;
10 % voltage drop
L14
–
–
–
Sine-wave filter in control
cabinet, 60 Hz;
10 % voltage drop
L15
–
–
–
Sine-wave filter IP00
supplied separately, 75 Hz;
10 % voltage drop
L16
–
–
–
Sine-wave filter in control
cabinet, 75 Hz;
5 % voltage drop
L17
–
–
–
Options are combinable.
–
Options mutually exclude each other.
© Siemens AG 2014