ABB DCS880 series, Hardware Manual

Page: 46 / 164

Planning the electrical installation
46
3ADW000462R0401 DCS880 Hardware manual e d
EMC filters
Further information is
available in the
Technical guide
:
The paragraphs below describe selection of the electri-
cal components in conformity with the EMC Guideline.
The aim of the EMC Guideline is, as the name implies,
to achieve electromagnetic compatibility with other
products and systems. The guideline ensures that the
emissions from the product concerned are so low that
they do not impair another product's interference
immunity.
In the context of the EMC Guideline, two aspects must
be borne in mind:
• the product's interference immunity and • the product's actual emissions.
The EMC Guideline expects EMC to be taken into
account when a product is being developed; however,
EMC cannot be designed in, it can only be quantita-
tively measured.
Note on EMC conformity:
The conformity procedure is the responsibility of both
the power converter's supplier and the manufacturer of
the machine or system concerned, in proportion to their
share in expanding the electrical equipment involved.
First environment (residential area with light industry) with PDS category C2
Not applied, since category C1 ( general distribution sales channel) excluded
Not applicable Satisfied
Satisfied
M M
Mains filter
Converter
Line reactor
Supply transformer for a residential
area (rating normally
≤
1.2 MVA)
Earthed public 400 V
network with neutral
conductor
Medium-voltage network
Earthed
neutral
T
o
other loads
, e
.g.
dr
iv
e systems
An isolating transformer
with an earthed screen
and earthed iron core
renders mains filter and
line reactor superfluous. Operation at public
low-voltage network
together with other
loads of all kinds.
Residential area
T
o
other loads which ha
v
e
to be protected from the system disturbances caused b
y
po
w
er con
v
e
rters (HF interf
erence and comm
utation notches)
Converter
M M M M M M
alter
nativ
e
alter
nativ
e
Line r
Y-capacitor
Medium-voltage network
Supply transformer for a residential
Earthed
neutral
Earthed public 400 V
network with neutral
conductor
T
o
other loads
, e
.g.
dr
iv
e systems
Mains filter
Line reactor
Converter Converter
Mains filter
Line reactor
Converter Converter
An isolating transformer
with an earthed screen
and earthed iron core
renders mains filter and
line reactor superfluous. Operation at public
low-voltage network
together with other
loads of all kinds.
T
o
other loads
, e
.g.
dr
iv
e systems
T
o
other loads which ha
v
e
to be protected from the system disturbances caused b
y
po
w
er con
v
e
rters (HF interf
erence and comm
utation notches)
Earthed public 400 V
network with neutral
conductor
Operation at public
low-voltage network
together with other
loads of all kinds.
Light industry
Residential area
Comm
utaion notches < 20
%
area (rating normally
≤
1.2 MVA)