Aerospace series - Test specification for verification of the permeability of electrical insulation

This document specifies a test that determines the ability of electrical equipment to withstand wet atmospheres in combination with variable ambient air pressure in particular in an aircraft installation. The main adverse effects to be anticipated are fluid ingress and related insulation breakdown.

Luft- und Raumfahrt - Testverfahren zur Überprüfung der elektrischen Isolationsfestigkeit

Série aérospatiale - Spécification d’essai pour la vérification de la perméabilité de l’isolation électrique

Le présent document spécifie un essai qui détermine la capacité des équipements électriques à résister aux atmosphères humides combinées à une pression atmosphérique ambiante variable, en particulier dans une installation d'aéronef. Les principaux effets indésirables à prévoir sont la pénétration de fluides et la rupture d'isolement qui en découle.

Aeronavtika - Specifikacija preskusa za preverjanje prepustnosti izolacije električne opreme

General Information

Status
Published
Publication Date
20-Dec-2022
Current Stage
6060 - Definitive text made available (DAV) - Publishing
Start Date
21-Dec-2022
Completion Date
21-Dec-2022

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Standards Content (Sample)

SLOVENSKI STANDARD
SIST EN 4703:2023
01-marec-2023
Aeronavtika - Specifikacija preskusa za preverjanje prepustnosti izolacije
električne opreme

Aerospace series - Test specification for verification of the permeability of electrical

insulation

Luft- und Raumfahrt - Testverfahren zur Überprüfung der elektrischen Isolationsfestigkeit

Série aérospatiale - Spécification d’essai pour la vérification de la perméabilité de

l’isolation électrique
Ta slovenski standard je istoveten z: EN 4703:2022
ICS:
49.060 Letalska in vesoljska Aerospace electric
električna oprema in sistemi equipment and systems
SIST EN 4703:2023 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST EN 4703:2023
---------------------- Page: 2 ----------------------
SIST EN 4703:2023
EN 4703
EUROPEAN STANDARD
NORME EUROPÉENNE
December 2022
EUROPÄISCHE NORM
ICS 49.060
English Version
Aerospace series - Test specification for verification of the
permeability of electrical insulation

Série aérospatiale - Spécification d'essai pour la Luft- und Raumfahrt - Testverfahren zur Überprüfung

vérification de la perméabilité de l'isolation électrique der elektrischen Isolationsfestigkeit

This European Standard was approved by CEN on 22 August 2022.

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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,

Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and

United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels

© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 4703:2022 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
SIST EN 4703:2023
EN 4703:2022 (E)
Contents Page

European foreword ...................................................................................................................................................... 3

1 Scope .................................................................................................................................................................... 4

2 Normative references .................................................................................................................................... 4

3 Terms and definitions ................................................................................................................................... 4

4 Test set-up ......................................................................................................................................................... 4

4.1 General set-up .................................................................................................................................................. 4

4.1.1 General................................................................................................................................................................ 4

4.1.2 Test set-up 1: HV-insulation resistance measurement ..................................................................... 4

4.1.3 Test set-up 2: Sheath integrity measurement ...................................................................................... 5

4.2 Immersion of receptacle .............................................................................................................................. 6

4.3 Operation of test unit .................................................................................................................................... 7

5 Test procedure ................................................................................................................................................. 8

6 Pass/fail criteria .............................................................................................................................................. 9

7 Designation ..................................................................................................................................................... 10

---------------------- Page: 4 ----------------------
SIST EN 4703:2023
EN 4703:2022 (E)
European foreword

This document (EN 4703:2022) 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 document has

received the approval of the National Associations and the Official Services of the member countries of

ASD-STAN, 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 June 2023, and conflicting national standards shall be

withdrawn at the latest by June 2023.

Attention is drawn to the possibility that some of the elements of this document may be the subject of

patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

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, Republic of North Macedonia, France,

Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands,

Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and

the United Kingdom.

Any feedback and questions on this document should be directed to the users’ national standards body.

A complete listing of these bodies can be found on the CEN website.
---------------------- Page: 5 ----------------------
SIST EN 4703:2023
EN 4703:2022 (E)
1 Scope

This document specifies a test that determines the ability of electrical equipment to withstand wet

atmospheres in combination with variable ambient air pressure in particular in an aircraft installation.

The main adverse effects to be anticipated are fluid ingress and related insulation breakdown.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements 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.

ISO 2678, Environmental tests for aircraft equipment — Insulation resistance and high voltage tests for

electrical equipment
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminology databases for use in standardization at the following addresses:

— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1
LCR meter
type of electronic test equipment used to meas
...

SLOVENSKI STANDARD
oSIST prEN 4703:2022
01-junij-2022
Aeronavtika - Specifikacija preskusa za preverjanje prepustnosti električne
izolacije

Aerospace series - Test specification for verification of the permeability of electrical

insulation

Luft- und Raumfahrt - Testverfahren zur Überprüfung der elektrischen Isolationsfestigkeit

Série aérospatiale - Spécification d’essai pour la vérification de la perméabilité de

l’isolation électrique
Ta slovenski standard je istoveten z: prEN 4703
ICS:
49.060 Letalska in vesoljska Aerospace electric
električna oprema in sistemi equipment and systems
oSIST prEN 4703:2022 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
oSIST prEN 4703:2022
---------------------- Page: 2 ----------------------
oSIST prEN 4703:2022
DRAFT
EUROPEAN STANDARD
prEN 4703
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2022
ICS 49.060
English Version
Aerospace series - Test specification for verification of the
permeability of electrical insulation

Série aérospatiale - Spécification d'essai pour la Luft- und Raumfahrt - Testverfahren zur Überprüfung

vérification de la perméabilité de l'isolation électrique der elektrischen Isolationsfestigkeit

This draft European Standard is submitted to CEN members for enquiry. 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, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,

Poland, Portugal, Republic of North Macedonia, Romania, Serbia, 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: Rue de la Science 23, B-1040 Brussels

© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 4703:2022 E

worldwide for CEN national Members.
---------------------- Page: 3 ----------------------
oSIST prEN 4703:2022
prEN 4703:2022 (E)
Contents Page

European foreword .................................................................................................. Error! Bookmark not defined.

1 Scope ................................................................................................................ Error! Bookmark not defined.

2 Normative references ................................................................................ Error! Bookmark not defined.

3 Terms and definitions ............................................................................... Error! Bookmark not defined.

4 Test set-up ..................................................................................................... Error! Bookmark not defined.

4.1 General set-up .............................................................................................. Error! Bookmark not defined.

4.1.1 General............................................................................................................ Error! Bookmark not defined.

4.1.2 Test set-up 1: HV-insulation resistance measurement ................. Error! Bookmark not defined.

4.1.3 Test set-up 2: Sheath integrity measurement .................................. Error! Bookmark not defined.

4.2 Immersion of receptacle .......................................................................... Error! Bookmark not defined.

4.3 Operation of test unit ................................................................................ Error! Bookmark not defined.

5 Test procedure ............................................................................................. Error! Bookmark not defined.

6 Pass/fail criteria .......................................................................................... Error! Bookmark not defined.

7 Designation ................................................................................................... Error! Bookmark not defined.

---------------------- Page: 4 ----------------------
oSIST prEN 4703:2022
prEN 4703:2022 (E)
European foreword

This document (prEN 4703:2022) 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 document has

received the approval of the National Associations and the Official Services of the member countries of

ASD-STAN, prior to its presentation to CEN.
This document is currently submitted to the CEN Enquiry.
---------------------- Page: 5 ----------------------
oSIST prEN 4703:2022
prEN 4703:2022 (E)
1 Scope

This document specifies a test that determines the ability of electrical equipment to withstand wet

atmospheres in combination with variable ambient air pressure in particular in an aircraft installation.

The main adverse effects to be anticipated are fluid ingress and related insulation breakdown.

2 Normative references

The following documents are referred to in the text in such a way that some or all of their content

constitutes requirements 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.

ISO 2678, Environmental tests for aircraft equipment — Insulation resistance and high voltage tests for

electrical equipment
3 Terms and definitions
For the purposes of this document, the following terms and definitions apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

• ISO Online browsing platform: available at https://www.iso.org/obp
• IEC Electropedia: available at https://www.electropedia.org/
3.1
LCR meter

type of electronic test equipment used to measure the inductance (L), capacitance (C) and resistance (R)

of an electronic component
4 Test set-up
4.1 General set-up
4.1.1 General

The test shall be conducted inside a suitable test chamber. The temperature inside the chamber shall be

15 °C to 35 °C. The unit under test (UUT) shall be placed in a suitable, electrically non-conducting

container filled with tap water. NaCl shall be dissolved in the tap water until a conductivity value of

−1 −1

1 mS cm ± 0,1 mS cm has been attained. The conductivity shall be measured with a conductivity

met
...

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