FN660-20-10 Schaffner EMC Inc, FN660-20-10 Datasheet - Page 5

• Manufacturer Part Number: FN660-20-10
• Description: FILTER 2-STAGE GENERAL 20A
• Manufacturer: Schaffner EMC Inc
• Series: FN 660r

Specifications of FN660-20-10

• Filter Type: Power Line
• Voltage - Rated: 250V
• Current: 20A
• Inductance: 480µH
• Mounting Type: Chassis Mount
• Termination Style: Stud Lug
• Current Rating: 20A
• Voltage Rating: 250V
• Leakage Current Max: 190µA
• Capacitance: 0.15µF
• Inductance Min: 480µH
• Termination Type: Screw
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 282-352; 817-1225; FN 660 -20 /10

Understanding EMC standards
and filter specifications
This section introduces the
standards and regulations
associated with EMC protection,
and provides detailed information
to help you understand filter
design and specifications. It will
help you identify for your applica-
tion the right specifications and
type of filter.
Interference protection standards
Until recently most countries have had
their own regulations and standards
governing electro-magnetic interference
(EMI) or radio frequency interference (RFI).
However, on the 1 January 1992 the
European Directive 89/336/EMC on
electro-magnetic compatibility (EMC)
came into force. This directive brings a
common approach to EMC to every
member state of the European Union.
Common standards will be used
throughout Europe to ensure that
technical trade barriers are removed. As
well as controlling EMI emissions from
equipment, the directive also calls for
equipment to be immune to external
electro-magnetic disturbances.
The task of elaborating the standards to
be used has been given to the European
organisation called CENELEC. The
member countries of CENELEC are:
Austria
Belgium
Denmark
Finland
France
Germany
Greece
Iceland
Ireland
Most of the European standards will be
based upon international standards from
CISPR and IEC. The numbering system
used in the European standards is:
EN = European Norm. xx = 50 denotes that
the standard is a standard of CENELEC
origin; xx = 55 means the standard is
based on a CISPR standard yyy; xx = 60
means the standard is based on an IEC
standard yyy.
4
Italy
Luxembourg
Netherlands
Norway
Portugal
Spain
Sweden
Switzerland
United Kingdom
EN xx yyy
Table 1. European EMC standards
Once the European standard is complete
the individual members of the European
Union will produce national harmonised
standards and will usually give their
harmonised standard a national number,
eg the British harmonised standard of EN
55011 is BS EN 55011.
Types of standards:
Basic standards
and fundamental rules for meeting the
requirements. Terminology, phenomena,
compatibility levels, measurement, test
techniques and classification of EM
environments are so described within.
Generic standards
environments. They set minimal EMI levels
which equipment in these environments
must meet. Where no product specific
standards exist then the generic standards
are to be used. Generic standards
describe household and industrial EMI
environments.
Products standards
products or product groups. These
standards are coordinated with the
generic standards.
In countries outside Europe other
standards will be used, such as the FCC in
the USA. Table 1 shows the main
European standards.
Product type
Household appliances &
portable tools: vacuum
cleaners, washing
machines, heating,
cooking equipment,
dimmers
Luminaires with
discharge lamps
TV receivers
Information Technology
Equipment (ITE)
Mains signalling
equipment
Industrial, scientific and
medical eqpt. designed
to generate RF energy
Industrial electronic
power and control
equipment
Industrial non-electronic
equipment
describe the general
refer to specific
are for specific
Harmonics
EN60555-2
EN60555-2
EN60555-2
EN60555-2
Voltage
fluctuations
EN60555-3
Emissions
Permissible noise limits
The various standards set down limits for
conducted EMI emissions. These limits are
measured in voltage and given in dB V
where 0dB is 1 V. The interference is
measured using measurement equipment
which has defined bandwidths and
receivers. The two receivers used are a
quasi-peak detector, and an average
detector.
To ensure repeatability of the
measurements, the impedance of the
mains supply must be constant. The
standards calls for a defined artificial
mains network - sometimes called a line
impedance stabilisation network (LISN) -
which gives a defined impedance to the
noise and also helps filter any noise on the
mains which may affect the
measurements.
Figure 1 shows the limits of EN 50081-1
the European generic standard for
residential, commercial and light industrial
environments, and Figure 2 of EN 50081-2,
the European generic standard for the
industrial environment.
Above 30MHz, radiated noise interference
is measured instead of conducted noise.
This takes place on an open field test site
using defined antennas.
Radio
interference
EN55014
EN55015
EN55013
EN55022
EN50065-1
EN55011
EN50081-2
EN50081-2
(if producing RF
interference)
Immunity
All
aspects
EN50082-1
EN50082-1
EN55020
EN55024
all parts
EN50082-2
EN50082-2
EN50082-2