EN 50397-2:2009

SLOVENSKI STANDARD
01-februar-2010
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Covered conductors for overhead lines and the related accessories for rated voltages
above 1 kV AC and not exceeding 36 kV AC -- Part 2: Accessories for covered
conductors - Tests and acceptance criteria
Kunststoffumhüllte Leiter und zugehörige Armaturen für Freileitungen mit
Nennspannungen zwischen 1 kV und 36 kV Wechselspannung -- Teil 2: Armaturen für
kunststoffumhüllte Freilleitungsseile - Prüfungen und Anforderungen
Conducteurs gainés pour lignes aériennes et accessoires associés pour tension
supérieure à 1 kV AC et inférieure à 36 kV AC -- Partie 2: Accessoires pour conducteurs
gainés - Exigences et essais
Ta slovenski standard je istoveten z: EN 50397-2:2009
ICS:
29.060.20 Kabli Cables
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 50397-2
NORME EUROPÉENNE
October 2009
EUROPÄISCHE NORM
ICS 29.240.20
English version
Covered conductors for overhead lines and the related accessories
for rated voltages above 1 kV AC and not exceeding 36 kV AC -
Part 2: Accessories for covered conductors -
Tests and acceptance criteria
Conducteurs gainés pour lignes aériennes Kunststoffumhüllte Leiter
et accessoires associés pour des tensions und zugehörige Armaturen
assignées supérieures à 1 kV c.a. für Freileitungen mit Nennspannungen
et ne dépassant pas 36 kV c.a - über 1 kV und nicht mehr als 36 kV
Partie 2: Accessoires Wechselspannung -
pour conducteurs gainés - Teil 2: Armaturen für kunststoffumhüllte
Exigences et essais Freileitungsseile -
Prüfungen und Anforderungen
This European Standard was approved by CENELEC on 2009-04-22. 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 50397-2:2009 E
Foreword
This European Standard was prepared by 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 50397-2 on 2009-04-22.
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) 2010-05-01
– latest date by which the national standards conflicting

with the EN have to be withdrawn
(dow) 2012-05-01
EN 50397 consists of two parts: Part 1 "Covered Conductors" and Part 2 "Accessories". It
covers the construction, performance and test acceptance criteria for covered conductors for
overhead lines having a nominal voltage above 1 kV a.c. up to and including 36 kV a.c., and
for the related accessories.
This European Standard EN 50397-2 covers the accessories.
NOTE It has been assumed in the preparation of this document that the execution of its provisions will be
entrusted to appropriately qualified and experienced people, for whose use it has been produced.

WARNING This European Standard calls for the use of substances and/or procedures that
may be injurious to health if adequate precautions are not taken. It refers only to technical
suitability and does not absolve the user from legal obligations relating to health and safety at
any stage.
__________
– 3 – EN 50397-2:2009
Contents
Introduction. 5
1 Sc op e . . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Requirements . . 8
4.1 General requirements . 8
4.2 Specific requirements for fittings used on covered conductor . 8
4.3 Marking . 10
5 Quality assurance . 10
6 Classification of tests – Type tests, sample tests, routine tests . 10
6.1 Type tests . 10
6.2 Sample tests . 11
6.3 Routine tests . 11
7 Tests . 11
7.1 Visual examination . 12
7.2 Dimensional and material verification . 12
7.3 Test for permanent marking . 12
7.4 Mechanical tests . 12
7.5 Hot dip galvanizing test . 31
7.6 Water tightness test for IPC . 31
7.7 Electrical ageing test for connectors . 32
7.8 Short-circuit test on APD or EPD . 32
7.9 Power arc test . 33
7.10 Environmental test for suspension and tension clamps . 34
7.11 Environmental tests for connectors . 36
Annex A (normative) Type tests, sample tests and routine tests . 39
Annex B (informative) Example of sampling with inspection by attributes . 40
Annex C (informative) Example of sampling with inspection by variable . 41
Bibliography . 42

Figures
Figures 1 - Test arrangement for damage and failure load test . 14
Figures 2 - Test arrangement of slip test at ambient temperature . 15
Figures 3 - Slip test arrangement at low temperature . 17
Figure 4 - Lift and side load test. 20
Figure 5 - Tensile test arrangement . 22
Figure 6 - Arrangement for the low temperature zone . 23
Figure 7 - Test arrangement . 29
Figure 8 - Mechanical stresses on earth parking device . 31
Figure 9 - Test arrangement for water tightness test . 32
Figure 10 - Resistance measurement . 33
Figure 11 - Example of power arc test arrangement for arc protection system . 34

Tables
Table 1 - Specified minimum loads . 19
Table A.1 . 39

– 5 – EN 50397-2:2009
Introduction
Covered conductors consist of a conductor surrounded by a covering made of insulating
material as protection against accidental contacts with other covered conductors and with
grounded parts such as tree branches, etc. In comparison with insulated conductors, this
covering has reduced properties, but is able to withstand the phase-to-earth voltage
temporarily.
Since covered conductors are unscreened, they are not touch-proof, i.e. they must be treated
as bare conductors with respect to electric shock.
EN 50397-2 does not cover aspects related to the installation of overhead lines such as
determination of clearances, spans, sags, etc.

1 Scope
This Part 2 of EN 50397 contains the requirements for accessories that are for use with the
covered conductors in accordance with EN 50397-1. They are for applications in overhead
lines with rated voltages U above 1 kV a.c. and not exceeding 36 kV a.c.
NOTE This European Standard describes the requirements and tests only for the accessories installed on the
covered conductor itself.
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.
Covered conductors for overhead lines and the related accessories for
EN 50397-1:2006
rated voltages above 1 kV a.c. and not exceeding 36 kV a.c. - Part 1:
Covered conductors
EN 50483-5 Test requirements for low voltage aerial bundled cable accessories -
Part 5: Electrical ageing test
EN 50483-6:2009
Test requirements for low voltage aerial bundled cable accessories -
Part 6: Environmental testing
EN 61284:1997 Overhead lines - Requirements and tests for fittings (IEC 61284:1997)
EN 61467 Insulators for overhead lines - Insulator strings and sets for lines with a
nominal voltage greater than 1 000 V - AC power arc tests (IEC 61467)
EN ISO 1461 Hot dip galvanized coatings on fabricated iron and steel articles -
Specifications and test methods (ISO 1461)
International Electrotechnical Vocabulary (IEV) - Part 461: Electric
IEC 60050-461
cables
ISO 2859-1 Sampling procedures for inspection by attributes - Part 1: Sampling
schemes indexed by acceptance quality limit (AQL) for lot-by-lot
inspection
ISO 2859-2 Sampling procedures for inspection by attributes - Part 2: Sampling
plans indexed by limiting quality (LQ) for isolated lot inspection
ISO 3951 series Sampling procedures for inspection by variables
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.
3.1
type tests (symbol T)
tests required to be made before supplying a type of product covered by this EN on a general
commercial basis in order to demonstrate satisfactory performance characteristics to meet the
intended application
NOTE These tests are of such nature that, after they have been made, they need not be repeated unless
changes are made in the material, design or manufacturing process, which might change the performance
characteristics.
3.2
sample tests (symbol S)
tests made on samples of completed product or components taken from the completed
product adequate to verify, that the finished product meets the design specifications

– 7 – EN 50397-2:2009
3.3
routine tests (symbol R)
tests intended to prove conformance of fittings to specific requirements and made on every
fitting
3.4
rated voltage
the reference voltage (U), for which it is designed and which serves to define the electrical
tests
NOTE The rated voltage is expressed by the value U expressed in kV, where U is the r.m.s. value between any
two phase conductors.
3.5
ambient temperature
the temperature from 15 °C to 30 °C
3.6
factory-formed helical conductor fitting
fitting consisting of helically formed wires which provide the force necessary to grip the
conductor by self-tightening
3.7
tension clamp
device which firmly attaches a covered conductor to a support and is designed to transmit the
specified mechanical tension in the conductor to the supporting structure
[IE
...