Aerospace series - Cables, electrical, aircraft use - Test methods - Part 307: Corona extinction voltage

This test standard defines methods to cover the detection and measurement of partial discharge (corona) under an applied test voltage, including the determination of partial discharges (corona) inception and extinction voltages as the test voltage is raised and lowered, of electrical cables for aircraft use.
It shall be used together with EN 3475-100.

Luft- und Raumfahrt - Elektrischen Leitungen für Luftfahrt Verwendung - Prûfverfahren - Teil 307: Korona-Aussetzspannung

Série aérospatiale - Câbles électriques à usage aéronautique - Méthodes d’essais - Partie 307: Tension d’extinction corona

La présente Norme Européenne définit des méthodes pour couvrir la détection et la mesure des décharges partielles (corona) des câbles électriques à usage aéronautique sous une tension d'essai appliquée. Elles comprennent la détermination des tensions d’apparition et d’extinction des décharges partielles (corona) quand la tension d’essai est augmentée et abaissée.
Elle doit être utilisée conjointement avec l'EN 3475-100.

Aeronavtika - Električni kabli za uporabo v zračnih plovilih - Preskusne metode - 307. del: Napetost koronske izgube

Ta preskusni standard določa metode za zaznavanje in merjenje delne razelektritve (korona) pri preskusni napetosti, vključno z določanjem napetosti koronske pridobitve in izgube pri višanju in nižanju preskusnih napetosti, električnih kablov za uporabo v aeronavtiki.
Uporabljati ga je treba s standardom EN 3475-100.

General Information

Status
Published
Public Enquiry End Date
19-May-2014
Publication Date
28-Jul-2015
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
09-Jul-2015
Due Date
13-Sep-2015
Completion Date
29-Jul-2015

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Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 3475-307:2015
01-september-2015
1DGRPHãþD
SIST EN 3475-307:2010
$HURQDYWLND(OHNWULþQLNDEOL]DXSRUDERY]UDþQLKSORYLOLK3UHVNXVQHPHWRGH
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Aerospace series - Cables, electrical, aircraft use - Test methods - Part 307: Corona
extinction voltage
Luft- und Raumfahrt - Elektrischen Leitungen für Luftfahrt Verwendung - Prûfverfahren -
Teil 307: Korona-Aussetzspannung
Série aérospatiale - Câbles électriques à usage aéronautique - Méthodes d’essais -
Partie 307: Tension d’extinction corona
Ta slovenski standard je istoveten z: EN 3475-307:2015
ICS:
49.060 /HWDOVNDLQYHVROMVND Aerospace electric
HOHNWULþQDRSUHPDLQVLVWHPL equipment and systems
SIST EN 3475-307:2015 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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SIST EN 3475-307:2015

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SIST EN 3475-307:2015

EUROPEAN STANDARD
EN 3475-307

NORME EUROPÉENNE

EUROPÄISCHE NORM
June 2015
ICS 49.060 Supersedes EN 3475-307:2010
English Version
Aerospace series - Cables, electrical, aircraft use - Test methods
- Part 307: Corona extinction voltage
Série aérospatiale - Câbles électriques à usage Luft- und Raumfahrt - Elektrische Leitungen für
aéronautique - Méthodes d'essais - Partie 307: Tension Luftfahrtverwendung - Prüfverfahren - Teil 307: Corona-
d'extinction corona Aussetzspannung
This European Standard was approved by CEN on 21 June 2014.

CEN 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 CEN-CENELEC Management Centre or to any CEN 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 CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same
status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United
Kingdom.





EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2015 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 3475-307:2015 E
worldwide for CEN national Members.

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SIST EN 3475-307:2015
EN 3475-307:2015 (E)
Contents Page
European Foreword .3
1 Scope .5
2 Normative references .5
3 Terms and definitions .5
4 Applicability .5
5 Apparatus .6
6 Methods .6
6.1 General .6
6.2 Method A .6
6.3 Method B .7
7 Procedure .8
8 Requirement .9

2

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SIST EN 3475-307:2015
EN 3475-307:2015 (E)
European Foreword
This document (EN 3475-307:2015) has been prepared by the Aerospace and Defence Industries Association
of Europe - Standardization (ASD-STAN).
After enquiries and votes carried out in accordance with the rules of this Association, this Standard has
received the approval of the National Associations and the Official Services of the member countries of ASD,
prior to its presentation to CEN.
This European Standard shall be given the status of a national standard, either by publication of an identical
text or by endorsement, at the latest by December 2015, and conflicting national standards shall be withdrawn
at the latest by December 2015.
Attention is drawn to the possibility that some of the elements of this document may be the subject of patent
rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights.
This document supersedes EN 3475-307:2010.
According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following
countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech
Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,
Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom.
3

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SIST EN 3475-307:2015
EN 3475-307:2015 (E)
Introduction
For an electrical cable, the presence of partial discharges effects at operating voltage may result in a
significant reduction of service life.
Some insulation materials are more susceptible to such discharge damage than others.
Evidence of partial discharges during operation signifies for example:
 the insulation thickness is insufficient for the applied voltage;
 the quality of the insulation is inadequate possibly due to excessive size or quantities of internal cavities
or voids;
 an overstress is present, resulting in a local reduction of the cable insulation properties.
* *
Significant parameters may influence PDIV and PDEV such as pressure, temperature, humidity, previous
electrification, input signal characteristics (sine wave, voltage rate, .). Attention shall be given to installation
conditions in A/C, for example excessive bending or surface wrinkling of insulation shall be avoided.
Up to few tens of kHz frequency can be considered as non-significant parameter.

*
See definition, Clause 3.
4

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SIST EN 3475-307:2015
EN 3475-307:2015 (E)
1 Scope
This European Standard defines methods to cover the detection and measurement of partial discharge
(corona) under an applied test voltage, including the det
...

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Luft- und Raumfahrt - Elektrischen Leitungen für Luftfahrt Verwendung - Prûfverfahren - Teil 307: Korona-AussetzspannungSérie aérospatiale - Câbles électriques à usage aéronautique - Méthodes d’essais - Partie 307: Tension d’extinction coronaAerospace series - Cables, electrical, aircraft use - Test methods - Part 307: Corona extinction voltage49.060Aerospace electric equipment and systemsICS:Ta slovenski standard je istoveten z:FprEN 3475-307 revkSIST FprEN 3475-307:2014en,fr,de01-maj-2014kSIST FprEN 3475-307:2014SLOVENSKI
STANDARD



kSIST FprEN 3475-307:2014



EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
FINAL DRAFT
FprEN 3475-307 rev
March 2014 ICS 49.060 Will supersede EN 3475-307:2010English Version
Aerospace series - Cables, electrical, aircraft use - Test methods - Part 307: Corona extinction voltage
Série aérospatiale - Câbles électriques à usage aéronautique - Méthodes d'essais - Partie 307: Tension d'extinction corona
Luft- und Raumfahrt - Elektrischen Leitungen für Luftfahrt Verwendung - Prûfverfahren - Teil 307: Korona-Aussetzspannung This draft European Standard is submitted to CEN members for formal vote. It has been drawn up by the Technical Committee ASD-STAN. If this draft becomes a European Standard, CEN 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.
This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels © 2014 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. FprEN 3475-307 rev:2014 EkSIST FprEN 3475-307:2014



FprEN 3475-307:2014 (E) 2 Contents Page Foreword .3 1 Scope .5 2 Normative references .5 3 Terms and definitions .5 4 Applicability .5 5 Apparatus .6 6 Methods .6 6.1 General .6 6.2 Method A .6 6.3 Method B .7 7 Procedure .8 8 Requirement .9
kSIST FprEN 3475-307:2014



FprEN 3475-307:2014 (E) 3 Foreword This document (FprEN 3475-307:2014) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN). After enquiries and votes carried out in accordance with the rules of this Association, this Standard has received the approval of the National Associations and the Official Services of the member countries of ASD, prior to its presentation to CEN. This document is currently submitted to the Formal Vote. This document will supersede EN 3475-307:2010. kSIST FprEN 3475-307:2014



FprEN 3475-307:2014 (E) 4 Introduction For an electrical cable, the presence of partial discharges effects at operating voltage may result in a significant reduction of service life. Some insulation materials are more susceptible to such discharge damage than others. Evidence of partial discharges during operation signifies for example:  the insulation thickness is insufficient for the applied voltage;  the quality of the insulation is inadequate possibly due to excessive size or quantities of internal cavities or voids;  an overstress is present, resulting in a local reduction of the cable insulation properties. Significant parameters may influence PDIV and PDEV such as pressure, temperature, humidity, previous electrification, input signal characteristics (sine wave, voltage rate, .). Attention shall be given to installation conditions in A/C, for example excessive bending or surface wrinkling of insulation shall be avoided. Up to few tens of kHz frequency can be considered as non-significant parameter. kSIST FprEN 3475-307:2014



FprEN 3475-307:2014 (E) 5 1 Scope This European Standard defines methods to cover the detection and measurement of partial discharge (corona) under an applied test voltage, including the determination of partial discharges (corona) inception and extinction voltages as the test voltage is raised and lowered, of electrical cables for aircraft use. It shall be used together with EN 3475-100. 2 Normative references The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition
...

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