EN 50483-3:2009

SLOVENSKI STANDARD
01-julij-2009
Zahteve za preskušanje pribora za nizkonapetostne izolirane nadzemne kable - 3.
del: Zatezne in nosilne sponke za sisteme z nosilnim nevtralnim vodnikom
Test requirements for low voltage aerial bundled cable accessories -- Part 3: Tension
and suspension clamps for neutral messenger system
Prüfanforderungen für Bauteile für isolierte Niederspannungsfreileitungen – Teil 3:
Abspann- und Tragklemmen für Systeme mit Nullleiter-Tragseil
Prescriptions relatives aux essais des accessoires pour réseaux aériens basse tension
torsadés -- Partie 3: Matériels d'ancrage et de suspension pour réseaux aériens en
conducteurs isolés torsadés avec neutre porteur
Ta slovenski standard je istoveten z: EN 50483-3:2009
ICS:
29.240.20 Daljnovodi Power transmission and
distribution lines
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
EN 50483-3
NORME EUROPÉENNE
January 2009
EUROPÄISCHE NORM
ICS 29.240.20
English version
Test requirements for low voltage aerial bundled cable accessories -
Part 3: Tension and suspension clamps for neutral messenger system

Prescriptions relatives aux essais  Prüfanforderungen für Bauteile für
des accessoires pour réseaux aériens isolierte Niederspannungsfreileitungen -
basse tension torsadés - Teil 3: Abspann- und Tragklemmen
Partie 3: Matériels d'ancrage für Systeme mit Nullleiter-Tragseil
et de suspension pour réseaux aériens
en conducteurs isolés torsadés
avec neutre porteur
This European Standard was approved by CENELEC on 2008-12-01. 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, Bulgaria, Cyprus, the
Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia,
Lithuania, Luxembourg, Malta, the Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain,
Sweden, Switzerland and the United Kingdom.

CENELEC
European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung

Central Secretariat: avenue Marnix 17, B - 1000 Brussels

© 2009 CENELEC - All rights of exploitation in any form and by any means reserved worldwide for CENELEC members.
Ref. No. EN 50483-3:2009 E
Foreword
This European Standard was prepared by a sub-group of WG 11 of the Technical Committee
CENELEC TC 20, Electric cables.
The text of the draft was submitted to the formal vote and was approved by CENELEC as
EN 50483-3 on 2008-12-01.
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) 2009-12-01
– latest date by which the national standards conflicting
with the EN have to be withdrawn (dow) 2011-12-01
This is Part 3 of CENELEC standard EN 50483 “Test requirements for low voltage aerial
bundled cable accessories”, which has six parts:
– Part 1: Generalities;
– Part 2: Tension and suspension clamps for self supporting system;
– Part 3: Tension and suspension clamps for neutral messenger system;
– Part 4: Connectors;
– Part 5: Electrical ageing test;
– Part 6: Environmental testing.
__________
– 3 – EN 50483-3:2009
Contents
1 Scope . 4
2 Normative references . 4
3 Terms and definit ions . 4
4 Symbols . 6
5 Charact erist i cs . 6
6 Marking . 6
7 General test conditions . 7
7.1 Mechanical tes t s . 7
7.2 T e m per atur e . 7
8 Type tests . 7
8.1 Type tests for tension clamps . 7
8.2 Type tests for suspension clamps . 21
Bibliography . 41
Figures
Figure 1 – Test arrangement . 8
Figure 2 – Cycle and temperature profile . 11
Figure 3 – Arrangement of the fitting for mechanical test at low temperature . 12
Figure 4 – Voltage test arrangement on tension clamp only . 17
Figure 5 – Dielectrical voltage test arrangement on tension clamp and conductor in air . 18
Figure 6 – Dielectrical voltage test arrangement on tension clamp in water . 20
Figure 7 – Mechanical test arrangement . 22
Figure 8 – Mechanical test arrangement . 23
Figure 9 – Slip test on the suspension clamps . 24
Figure 10 – Slip test on the suspension clamps . 25
Figure 11 – Corrosion test . 27
Figure 12 – Dielectrical voltage test arrangement in air . 30
Figure 13 – Dielectrical voltage test arrangement for metallic body . 31
Figure 14 – Dielectrical voltage test arrangement in water . 33
Figure 15 – Swing test arrangement . 35
Figure 16 – Swing test temperature measurement . 36
Figure 17 – Test arrangement for slip test at high temperature . 37
Figure 18 – Cycle and temperature profile . 39
Table
Table 1 – Tensile loads . 23

1 Scope
EN 50483 series applies to overhead line fittings for tensioning, supporting and connecting
aerial bundled cables (ABC) of rated voltage U /U (U ): 0,6/1 (1,2) kV.
0 m
This Part 3 applies to tensioning devices consisting of tension and suspension clamps, and
tension and suspension assemblies used for the installation of ABC with either insulated or
bare neutral messenger.
The tension and suspension clamps are designed to be installed on neutral conductors of ABC
defined in HD 626.
Tests described in this document are type tests.
NOTE  This European standard does not invalidate existing approvals of products achieved on the basis of national
standards and specifications and/or the demonstration of satisfactory service performance. However, products
approved according to such national standards or specifications cannot directly claim approval to this European
Standard. It may be possible, subject to agreement between supplier and purchaser, and/or the relevant conformity
assessment body, to demonstrate that conformity to the earlier standard can be used to claim conformity to this
standard, provided an assessment is made of any additional type testing that may need to be carried out. Any such
additional testing that is part of a sequence of testing cannot be done separately.
2 Normative references
The following referenced documents are indispensable for the application of this document. For
dated references, only the edition cited applies. For undated references, the latest edition of
the referenced document (including any amendments) applies.
EN 50483 series, Test requirements for low voltage aerial bundled cable accessories
HD 626 S1:1996, Overhead distribution cables of rated voltage U /U(U ): 0,6/1 (1,2) kV
o m
IEC 60050-461, International Electrotechnical Vocabulary (IEV) – Part 461: Electric cables
3 Terms and definitions
For the purposes of this document, the terms and definitions given in IEC 60050-461 and the
following apply.
3.1
aerial bundled cable (ABC)
aerial cable consisting of a group of insulated conductors which are twisted together including,
or not, a non insulated conductor
[IEV 461-08-02, modified]
NOTE  The terms bundled conductors, bundled cables, bundled cores, conductor bundles and bundle could be
used as equivalent to the term aerial bundled cable (ABC).
3.2
aerial-insulated-cable
insulated cable designed to be suspended overhead and outdoors
[IEV 461-08-01]
– 5 – EN 50483-3:2009
3.3
angle of deviation
complementary angle to the angle defined by the two parts of the cable on both sides of the
suspension clamp
3.4
clamp bolt
bolt which tightens two parts of a clamp together
3.5
conductor insulation
insulation applied on a conductor
[IEV 461-02-02, modified]
3.6
conductor (of a cable)
part of a cable which has the specific function of carrying current
[IEV 461-01-01]
3.7
core
assembly comprising conductor and its own insulation
[IEV 461-04-04, modified]
3.8
fixture (or fitting)
device for attaching ABC tension or/and suspension clamps to a pole or to a wall
3.9
insulation (of a cable)
insulating materials incorporated in a cable with the specific function of withstanding voltage
[IEV 461-02-01]
3.10
messenger
wire or rope, the primary function of which is to support the cable in aerial installations, which
may be separate from or integral with the cable it supports
[IEV 461-08-03]
3.11
minimum breaking load (MBL)
minimum breaking load of the conductor given by HD 626 or the cable manufacturer if not
defined in the standard or minimum breaking load of the clamp given by the clamp
manufacturer
3.12
mobile link
device linking the suspension clamp to the fixture
3.13
neutral messenger system
aerial insulated system where only the neutral messenger supports the ABC
3.14
sheath
uniform and continuous tubular covering of metallic or non metallic material, generally extruded
[IEV 461-05-03]
3.15
suspension clamp
device which attaches an aerial insulated cable to a fixture in order to carry its weight and any
specified loading
[IEV 461-18-02, modified]
3.16
suspension or tension assembly
clamp with mobile link, or not, and associated fixture
3.17
tension clamp
device which firmly attaches an aerial insulated cable to a fixture and is designed to transmit
the specified mechanical tension in the cable or messenger to the supporting structure
[IEV 461-18-01, modified]
3.18
type test
test required to be made before supplying a type of material covered by this standard on a
general commercial basis, in order to demonstrate satisfactory performance characteristics to
meet the intended application
NOTE  These tests are of such a nature that, after they have been made, they need not be repeated unless
changes are made to the accessory materials, design or type of manufacturing process which might change the
performance characteristics.
4 Symbols
g slippage after 2 cycles
g slippage after 15 cycles
g slippage after 250 cycles
g slippage after 500 cycles
d diameter of core
α maximum angle (°) of deviation of a suspension clamp as recommended by the
manufacturer or specified by the customer
5 Characteristics
These fittings shall be capable of supporting the tensile loads applied to the ABC for which they
are designed, referring to the neutral messenger specified MBL, in accordance with the
following tests.
Tension and suspension equipment shall be designed to avoid any direct or accidental contact
between any phase conductor and metallic parts of the clamp.
6 Marking
See Clause 6 of EN 50483-1.
– 7 – EN 50483-3:2009
7 General test conditions
See Clause 9 of EN 50483-1.
7.1 Mechanical tests
See Clause 9 of EN 50483-1.
NOTE  Where an assembly is to be tested, each bracket should be secured in accordance with the manufacturer’s
installation instructions.
7.2 Temperature
See Clause 9 of EN 50483-1.
8 Type tests
Each clamp shall be tested for the smallest and largest messenger size except for
environmental tests where only the largest size is used.
8.1 Type tests for tension clamps
The foll
...