EN 50065-4-2:2001

SLOVENSKI SIST EN 50065-4-2:2003

STANDARD
februar 2003
Signalling on low voltage electrical installations in the frequency range 3 kHz to
148,5 kHz - Part 4-2: Low voltage decoupling filters - Safety requirements
ICS 31.160; 33.040.30 Referenčna številka
©  Standard je založil in izdal Slovenski inštitut za standardizacijo. Razmnoževanje ali kopiranje celote ali delov tega dokumenta ni dovoljeno

EUROPEAN STANDARD EN 50065-4-2
NORME EUROPÉENNE
EUROPÄISCHE NORM August 2001
ICS 31.160; 33.040.30
English version
Signalling on low voltage electrical installations
in the frequency range 3 kHz to 148,5 kHz
Part 4-2: Low voltage decoupling filters -
Safety requirements
Transmission de signaux sur les réseaux Signalübertragung auf elektrischen
électriques basse tension dans la bande Niederspannungsnetzen im
de fréquences de 3 kHz à 148,5 kHz Frequenzbereich 3 kHz bis 148,5 kHz
Partie 4-2: Filtres basse tension de Teil 4-2: Niederspannungs-
découplage - Entkopplungsfilter -
Exigences de sécurité Sicherheitsanforderungen
This European Standard was approved by CENELEC on 2000-11-01. CENELEC members are bound to
comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on
application to the Central Secretariat or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CENELEC member into its own language and
notified to the Central Secretariat has the same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Czech Republic,
Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway,
Portugal, Spain, Sweden, Switzerland and United Kingdom.
CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
Central Secretariat: rue de Stassart 35, B - 1050 Brussels
© 2001 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50065-4-2:2001 E
Foreword
This European Standard was prepared by SC 205A, Mains communicating systems, of Technical
Committee CENELEC TC 205, Home and Building Electronic Systems (HBES).
This European Standard has been prepared under a mandate given to CENELEC by the European
Commission and covers the essential requirements of the Low Voltage Directive 73/23/EEC.
The text of the draft was submitted to the Unique Acceptance Procedure and was approved by CENELEC
as EN 50065-4-2 on 2000-11-01.
The following dates were fixed:
- latest date by which the EN has to be implemented
at national level by publication of an identical
national standard or by endorsement (dop) 2002-02-01
- latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2003-11-01
EN 50065 consists of the following parts, under the general title: Signalling on low voltage electrical
installations in the frequency range 3 kHz to 148,5 kHz
Part 1 General requirements, frequency bands and electromagnetic disturbances
Part 2-1 Immunity requirements for mains communications equipment and systems
operating in the range of frequencies 95 kHz to 148,5 kHz and intended for use in
residential, commercial and light industrial environments
Part 2-2 Immunity requirements for mains communications equipment and systems
operating in the range of frequencies 95 kHz to 148,5 kHz and intended for use in
industrial environments
Part 2-3 Immunity requirements for mains communications equipment and systems
operating in the range of frequencies 3 kHz to 95 kHz and intended for use by
electricity suppliers and distributors
Part 4-1 Low voltage decoupling filters – Generic specification
Part 4-2 Low voltage decoupling filters – Safety requirements
Part 4-3 Low voltage decoupling filters – Incoming filter
Part 4-4 Low voltage decoupling filters – Impedance filter
Part 4-5 Low voltage decoupling filters – Segmentation filter
Part 4-6 Low voltage decoupling filters – Phase coupler
Part 7 Equipment impedance
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Contents
1 Scope. 4
2 Normative references. 4
3 Definitions . 5
4 General requirements . 6
5 General notes on tests. 6
6 Rating . 6
7 Classification. 7
8 Marking. 7
9 Dimensions. 9
10 Protection against electric shock. 9
11 Provision for protective earthing.10
12 Terminals . 11
13 Construction. 12
14 Resistance to ageing, to harmful ingress of water and to humidity . 13
15 Insulation resistance and dielectric strength. 16
16 Temperature rise . 17
17 Mechanical strength. 19
18 Resistance to heat. 20
19 Screws, current-carrying parts and connections . 20
20 Creepage distances, clearances and distances through sealing compound. 22
21 Resistance to abnormal heat, to fire and to tracking. 25
22 Resistance to rusting. 26
23 Components . 26
24 Abnormal conditions. 27
25 Protection against short-circuit. 29
26 Resistance to transients . 29
Tables
Table 1 Symbols for identification of the termination . 8
Table 2 Connectable cross-sections of copper conductors . 12
Table 3 Test current . 18
Table 4 Permissible temperature rise.18
Table 5 Related torque. 19
Table 6 Creepage distances and clearances . 23
Table 7 Creepage distances for printed circuit board . 22
Table 8 Minimum clearances for printed circuit board. 24

1 Scope
This product safety standard applies to electrical equipment, such as decoupling filters and phase
couplers in a mains communication system for a phase to neutral voltage not exceeding AC 250 V and a
nominal current not exceeding 125 A, intended for household and similar fixed-electrical installations
including residential, commercial and light industrial buildings
2 Normative references
This European Standard incorporated by dated or undated reference, provisions from other publications.
These normative references are cited at the appropriate places in the text and the publications are listed
hereafter. For dated references, subsequent amendments to or revisions of any of these publications
apply to this European Standard only when incorporated in it by amendment or revision. For updated
references the latest edition of the publication referred to applies.
EN 60065 Audio, video and similar electronic apparatus – Safety requirements
(IEC 60065)
EN 60068-2-75 1997 Environmental testing – Part 2-75: Tests – Test Eh Hammer tests
(IEC 60068-2-75:1997)
EN 60127 series Miniature fuses (IEC 60127 series)
EN 60417 series Graphical symbols for use on equipment (IEC 60417 series)
EN 60529 Degrees of protection provided by enclosures (IP code) (IEC 60529)
EN 60669-1 1999 Switches for household and similar fixed electrical installations –
Part 1: General requirements (IEC 60669-1:1998, mod.)
EN 60695-2-1/X 1996 Fire hazard testing- Part 2: Test methods (IEC 60695-2-1/X:1994)
EN 60721-3-3 1995 Classification of environmental conditions – Part 3: Classification of groups of
environmental parameters and their severities – Section 3: Stationary use at
weather protected locations (IEC 60721-3-3:1994)
EN 60999-1 2000 Connecting devices – Safety requirements for screw-type and screwless-type
clamping units for electrical copper conductors – Part 1: General requirements
and particular requirements for conductors from 0,5 mm up to
35 mm (included) (IEC 60999-1:1999)
EN 132400 1994 Sectional Specification: Fixed capacitors for electromagnetic interference
suppression and connection to the supply mains (Assessment level D)
HD 214 S2 1980 Method of determining the comparative and the proof tracking indices of solid
insulating materials under moist conditions (IEC 60112:1979)
HD 384.4.442 S11997 Electrical installations of buildings – Part 4: Protection for safety –
Chapter 44 Protection against overvoltages - Section 442: Protection of low-
voltage installations against faults between high-voltage systems and earth
(related to IEC 60364-4-442:1993 + A1:1995)
HD 625.1 S1 1996 Insulation coordination for equipment within low-voltage systems –
Part 1: Principles, requirements and tests (IEC 60664-1:1992, mod.)
IEC 60695–10-2 1995 Fire hazard testing – Part 10: Guidance and test methods for the minimisation
of the effects of abnormal heat on electrotechnical products involved in fires –
Section 2 Method for testing products made from non-metallic materials for
resistance to heat using the ball pressure test

- 5 - EN 50065-4-2:2001
IEC 60999-2 1995 Connecting devices – Safety requirements for screw-type and screw-less
clamping units for electrical copper conductors – Part 2: Particular requirements
2 2
for conductors from 35 mm up to 300 mm
3 Definitions
Where the term’s voltage and current are used, they imply r.m.s. values, unless otherwise specified.
For the purpose of this standard, the following definitions apply:
3.1
decoupling filter
a device which attenuates incoming or outgoing signals within a specified frequency range
3.2
phase coupler
a device which transmits a signal within a specified frequency range from one phase to another in a multi-
phase installation
3.3
fault conditions
abnormal conditions which may occur during normal operation
3.4
enclosed equipment
equipment which is mounted and/or applied without an additional enclosure
3.5
unenclosed equipment
equipment intended to be built into an enclosure which completely covers the equipment
3.6
partly enclosed equipment
equipment intended to be built into an appropriate enclosure which only covers the unenclosed part of the
equipment
NOTE Flush-mounted equipment intended to be located in a box is an example of such equipment.
3.7
terminal
the conductive part of one pole, composed of one or more clamping unit(s) and insulation if necessary
3.8
screw-type terminal
a clamping unit for the connection and subsequent disconnection of one conductor or the interconnection
and subsequent disconnection of two ore more conductors, the connection being made, directly or
indirectly, by means of screws or nuts of any kind
3.9
screwless-type terminal
a clamping unit for the connection and subsequent disconnection of one conductor or the interconnection
and subsequent disconnection of two ore more conductors, the connection being made, directly or
indirectly, by means other than screws
3.10
nominal voltage
the voltage assigned to the equipment by the manufacturer
3.11
nominal current
the nominal maximum operating current assigned to the equipment by the manufacturer
3.12
conditional short-circuit current
a value of the AC component of a prospective current, which the equipment protected by a suitable short-
circuit protective device (hereafter referred to as SCPD) in series can withstand under specified
conditions of use and behaviour.

4 General requirements
Equipment and its enclosures shall be so designed and constructed that, in normal use, their
performance is reliable and without danger to the user or the surrou
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