Specifications

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SINAMICS G150

Drive converter cabinet units

75 kW to 1500 kW

3/27

Siemens D 11 · 2008

Options (continued)

L22/L23

Delivery without line reactor (L22 for converters

500 kW )

W ith line reactor 2 % (L23 for converters in single

ciruit > 500 kW )

The line reactor is included in the converter as standard for con-

verters up to 500 kW and for those with power units connected

in parallel. The line reactor (

= 2 %) is optional for converter

outputs # 500 kW, because converters in this power range are

often connected to the medium-voltage network using trans-

formers adapted to the converter output.

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 line harmon-

ics to the permitted values. The harmonic currents are limited by

the complete inductance comprising the line reactor and mains

supply cable inductance. Line reactors can be omitted if the

mains supply cable inductance is increased sufficiently, i. e., the

value of RSC must be sufficiently small.

RSC = Relative Short-Circuit power: Ratio of short-circuit power

k line

at the line connection point to fundamental apparent out-

put

conv

of the connected converters (in accordance with

EN 50178/VDE 0160).

For SINAMICS G150 drive converter cabinet units:

As, in practice, it is not known on which supply configuration in-

dividual converters are to be operated, i. e., which supply short-

circuit power is present at the converter connection point, it is

recommended that a line reactor is connected on the line side of

the converter.

The line reactor can be omitted (option L22) only if the values for

RSC are lower than those shown in the table. This is the case

when, as shown in the following figure, the converter is con-

nected to the line through a transformer with the appropriate rat-

ing.

As high-output converters are usually connected to medium-

voltage networks using transformers because of the harmonic

effects on the supply, cabinet units in a single circuit with outputs

over 500 kW have no line reactors as standard.

A line reactor (L23 option) is always required, however, if

• for cabinet units > 500 kW, the RSC ratio is > 20, or

• a line filter is used.

L26

Main switch incl. fuses/circuit-breakers

A switch disconnector with fuses is available as the main switch

for converters in a single circuit with ratings up to 800 A. Cabi-

nets with an output current greater than 800 A use a circuit-

breaker instead of a switch disconnector. The circuit-breaker is

controlled and supplied within the converter.

Option L26 is mandatory for converters with parallel-connected

power units and a rated input current of # 1500 A. Circuit-break-

ers are fitted in these units. For parallel-connected converters

with rated input currents of < 1500 A, option L26 can be se-

lected to equip them with fused main switches in addition to the

obligatory line contactors (option L13).

L45

EMERGENCY OFF pushbutton, door mounted

The EMERGENCY OFF button with protective collar is fitted in

the converter cabinet door and its contacts are connected to the

terminal block. The EMERGENCY OFF functions of Category 0

or 1 can be activated in conjunction with options L57, L59 and

L60.

Attention:

By pressing the EMERGENCY OFF button, the motor

is stopped either uncontrolled or controlled depending on the

selected Category 0 or 1, and the main voltage disconnected

from the motor in accordance with IEC 60204-1 (VDE 0113).

Auxiliary voltages (e.g. for separately-driven fans or anti-con-

densation heating) may still be present. Certain areas within the

converter also remain under voltage, e.g. the control function or

auxiliaries. If complete disconnection of all voltages is required,

the EMERGENCY OFF button must be incorporated into a pro-

tection function to be provided on the plantside. An NC contact

is available at terminal –X120 for this purpose.

The EMERGENCY OFF button is preconfigured at the factory

only when one of the options L57 to L60 is selected simulta-

neously. Other circuit arrangements must be implemented on

the plant side.

Type rating Line reactor can be

omitted

Line reactor req uired

kW for RSC Order code

(option)

for RSC Order code

(option)

< 200 " 43 L22 > 43 -

200 ... 500 " 33 L22 > 33 -

# 500 " 20 - > 20 L23

6)((#?-%)( *)%(- )$

?)(/#+-#+

;>%(, *)0 #+ %(*.-

%(".?->(?#

6)(/#+-#+

:%(# +#>?-)+

:%(#

& '%(#

9=7233=8<=22245?

Connection point of

transformer

Connection point of

converter

Mains power

input inductance

Converter

transf

k transf

Line

k2 line

G_D011_EN_00022c

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