ABB DCS800 - Page 37

Planning the electrical installation
37
3ADW000194R0611 DCS800 Hardware Manual f us
Single-phase filters for field supply
Many field supply units are single-phase converters for up to 50 A excitation current.
They can be supplied by two of the three input phases of the armature supply
converter. Then a field supply unit does not need its own filter.
If the phase to neutral voltage shall be taken (230 V in a 400 V line) then a separate
filter is necessary. ABB offers such filters for 250 V and 6...30 A.
* single-phase operation
Converter type of
field supply unit
dc current
[A]
Filter type ➀
U
max
= 250 V
DCF803-0016 *
DCF803-0035 *
FEX-425-Int *
8 NF1-250-8
16 NF1-250-20
DCF803-0050 50 NF1-250-55
DCF804-0050 50 NF1-250-55
further filters for 12 NF1-250-12
30 NF1-250-30
➀ The filters can be optimized for the real field cur-
rents: I
Filter
= I
Field