Converter
Reactor
SDCS-FEX-2
ND 30
Table 2.6/4: Commutating reactor (for more information
see publication
Technical Data)
Commutating reactor
When using the SDCS-FEX-2 field pow-
er converter, you should additionally
use a commutating reactor because of
EMC considerations. A commutating
reactor is not necessary for the SDCS-
FEX-1 (diode bridge); and in the DCF
503/504 field power converters, it is
already installed.
Field converter type
for field current
Transformer
I
F
type
U
prim
=
£
500 V
SDCS-FEX-1
≤
6 A
T 3.01
SDCS-FEX-2
≤
12 A
T 3.02
SDCS-FEX-2
≤
16 A
T 3.03
DCF503/4-0050
≤
30 A
T 3.04
DCF503/4-0050
≤
50 A
T 3.05
U
prim
=
£
600 V
SDCS-FEX-1
≤
6 A
T 3.11
SDCS-FEX-2
≤
12 A
T 3.12
SDCS-FEX-2
≤
16 A
T 3.13
U
prim
=
£
690 V
DCF503/4-0050
≤
30 A
T 3.14
DCF503/4-0050
≤
50 A
T 3.15
Table 2.6/3: Autotransformer data (for more information, e.g.
fuse data, see publication
Technical Data)
Additional components for field supply
Fig. 2.6/3: T3 autotransfor-
mer
Transformer T3
Type of converter
Manufacturer / Type
Fuse holder
DCS60x-0025-41/51
Bussman 170M 1564
OFAX 00 S3L
DCS60x-0050-41/51
Bussman 170M 1566
OFAX 00 S3L
DCS60x-0050-61
Bussman 170M 1568
OFAX 00 S3L
DCS60x-0075-41/51
Bussman 170M 1568
OFAX 00 S3L
DCS60x-0100-51
Bussman 170M 3815
OFAX 1 S3
DCS60x-0110-61
Bussman 170M 3815
OFAX 1 S3
DCS60x-0140-41/51
Bussman 170M 3815
OFAX 1 S3
DCS60x-0200-41/51
Bussman 170M 3816
OFAX 1 S3
DCS60x-0250-41/51
Bussman 170M 3817
OFAX 1 S3
DCS60x-0270-61
Bussman 170M 5810
OFAX 2 S3
DCS60x-0350-41/51
Bussman 170M 5810
OFAX 2 S3
DCS60x-0450-41/51/61
Bussman 170M 6811
OFAS B 3
DCS60x-0520-41/51
Bussman 170M 6811
OFAS B 3
DCS60x-0700-41/51
Bussman 170M 6813
OFAS B 3
Table 2.6/2: Fuses and fuse holders (for more information see
publication
Technical Data)
Fuses and fuse holders for armature supply
Fuse F1 and fuse holders
The converter units are subdivided into
two groups:
Unit sizes C1 and C2 with rated
currents up to 700 A require external
fuses.
In unit sizes C3 and C4 with rated
currents of 900 A to 5150 A, the
semiconductor fuses are installed
internally (no additional external
semiconductor fuses are needed).
The semiconductor fuses for the C1 and
C2 unit sizes are blade fuses. The rele-
vant data is listed in the table below.
The fuses type of construction requires
special fuse holders. Fuse holders of the
OFAX/OFAS type series are available.
The field supply units insulation volt-
age is higher than the rated operating
voltage (see Chapter Field supplies),
thus providing an option in systems of
more than 500 V for supplying the
power section of the converter directly
from the mains for purposes of armature
supply, and using an autotransformer to
match the field supply to its rated volt-
age. Moreover, you can use the au-
totransformer to adjust the field voltage
(SDCS-FEX-1 diode bridge) or to reduce
the voltage ripple. Different types (pri-
mary voltages of 400...500 V and of
525...690 V) with different rated currents
each are available.
II F 2-19
