SIEMENS
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Siemens D 11 · 2015
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Options
(continued)
4
SINAMICS G150
Drive converter cabinet units
75 kW to 2700 kW
L22
Scope of delivery without line reactor
(for converters
≤
500 kW)
L23
Line reactor u
k
= 2% (for converters > 500 kW)
The line reactor is included as standard in converters up to
500 kW. For converter power ratings > 500 kW, including the
parallel connections, the line reactor (
u
K
= 2%) is optionally
available, as in this power range, the converter is often con-
nected to the medium-voltage line supply via transformers that
are adapted to the converter rating.
A line reactor is needed for high short-circuit power levels, partly
to protect the actual converter against excessive harmonic cur-
rents, and thus against overload, and partly to limit the line har-
monics to the permissible values. The harmonic currents are lim-
ited by the complete inductance comprising the line reactor and
line supply cable inductance. Line reactors can be omitted if the
line supply cable inductance is increased sufficiently, i.e. the
RSC value must be sufficiently small.
RSC = Relative Short-Circuit power: Ratio of short-circuit power
S
K line
at the supply connection point to fundamental apparent
output
S
conv
of the connected converters (according to
EN 50178/VDE 0160).
The following applies for SINAMICS G150 converter cabinet
units:
It is recommended that a line reactor is always connected on the
line side of the converter, as in practice, it is often not known on
which supply configuration individual converters are to be oper-
ated, i.e. which supply short-circuit power is present at the con-
verter connection point.
The line reactor can only be omitted (option
L22
) if the values for
RSC are lower than those shown in the table. This is the case, as
shown in the following diagram, when the converter is con-
nected to the line supply via a transformer with the appropriate
rating.
As high-rating converters are usually connected to medium-volt-
age supply systems via transformers to reduce their harmonic
effects on the supply, cabinet units over 500 kW are not
equipped with line reactors as standard.
A line reactor (option
L23
) is always required when
•
For cabinet units > 500 kW, the RSC ratio is > 20, or
•
Several converters are connected to the same line connection
point
•
For cabinet units in a parallel connection, the line supply is not
fed-in through a three-winding transformer, or
•
A line filter is used
For further information, please refer to the SINAMICS Low Volt-
age Engineering Manual.
Note:
When option
L01
is selected, a line reactor is not required
(options
L22
/
L23
and
L01
cannot be combined).
L26
Main switch incl. fuses or circuit breakers
A switch disconnector with fuses is available as main switch for
converters in single connection
with ratings up to 800 A. With
currents above 800 A, a circuit breaker is used instead of a
switch disconnector. The circuit breaker is controlled and sup-
plied within the converter.
Option L26
is included as standard for converters with power
units connected in parallel
and a rated input current of
≥
1500 A.
Circuit breakers are installed in this case. For rated input cur-
rents < 1500 A, by selecting option
L26
, main switches including
fuses are installed in addition to the line contactors provided as
standard.
L45
EMERGENCY OFF pushbutton installed in the cabinet door
Option
L45
only includes the EMERGENCY OFF pushbutton.
This is fitted with a protective collar in the cabinet door of the
converter. The contacts of the pushbutton are brought out and
connected to a terminal block. The EMERGENCY OFF functions,
Category 0 or 1, can be activated in conjunction with options
L57
,
L59
and
L60
.
Notice:
By pressing the EMERGENCY OFF pushbutton, in compliance
with IEC 60204-1 (VDE 0113), the motor is stopped – either un-
controlled or controlled depending on the selected Category 0
or 1 – and the converter disconnected from the line supply. Aux-
iliary voltages such as the supply for an external fan or anti-con-
densation heating may still be present. Certain areas within the
converter also remain live (under voltage), such as the control or
auxiliary equipment. If complete disconnection of all voltages is
required, the EMERGENCY OFF pushbutton must be incorpo-
rated into a protective system to be implemented by the cus-
tomer. For this purpose, an NC contact is provided at terminal
-X120.
The EMERGENCY OFF button is preconfigured at the factory
only when one of the options
L57
to
L60
is selected simultane-
ously. Additional wiring must be provided at the plant.
Type rating
Line reactor can be omitted
Line reactor required
kW
For RSC
Order code
(option)
For RSC
Order code
(option)
<200
≤
43
L22
>43
–
200 ... 500
≤
33
L22
>33
–
≥
500
≤
20
–
>20
L23
Connection point of the
converter
Mains supply cable
inductance
Converter
Line reactor
Line
S
k line
G_D011_EN_00023c
u
Connection point of the
transformer
Connection point of the
converter
Mains supply cable
inductance
Converter
S
transf
k transf
%
Line
k1
k2 line
G_D011_EN_00022c
S
S
© Siemens AG 2015