EN 16602-70-30:2014
(Main)Space product assurance - Wire wrapping of high-reliability electrical connections
Space product assurance - Wire wrapping of high-reliability electrical connections
This Standard specifies requirements for preparing and assembling parts to be joined by wire wrapping, as well as the selection, calibration, use and certification of wire wrapping tools.
The covered wirewrapped connections are illustrated in Figure 1 1.
This type of connection is similar to “Class A preferred” or “modified” connection detailed in MIL STD 1130, and NASA NHB 5300.4(3H).
Only previously tested and qualified wirewrapped connections are covered by this Standard, which includes four wire sizes from 24 AWG
to 30 AWG, and three terminal post sizes up to 1,78 mm maximum diagonal. A step-by step procedure is covered in the informative
Annex A.
The use of heavier gauge wire and larger terminals is not generally prohibited, but it is considered unlikely that for such dimensions the method of wirewrapping would be chosen as the electrical interconnection technique. Instead it is assumed that wire larger than 24 AWG
will be multi-stranded and terminated by soldering in conformance with ECSS-Q-ST-70-08, or by crimping in conformance with ECSS-Q-ST-70-26.
Training and certification requirements for operators and inspectors are defined in clause 5.6.7 and in ECSS-Q-ST-20.
With effect from the date of approval, this Standard announces the adoption of the external document on a restricted basis for use in the European Cooperation for Space Standardization (ECSS) system.
This standard may be tailored for the specific characteristic and constraints of a space project in conformance with ECSS-S-ST-00.
Raumfahrtproduktsicherung - Umhüllung von Kabeln für hochzuverlässige elektrische Verbindungen
Assurance produit des projets spatiaux - Enveloppe de fils pour connexion électrique à fiabilité élevée
La présente norme spécifie les exigences applicables à la préparation et à l'assemblage de composants à relier par enveloppe de fils et traite également du choix, de l’étalonnage, de l’utilisation et de la certification de l’outillage pour les enveloppes de fils.
Les connexions avec enveloppe de fils traitées sont illustrées à la Figure 1-1.
Ce type de connexion est semblable aux connexions « Classe A recommandée » ou « modifiée » pour lesquelles de plus amples informations figurent dans les normes MIL-STD-1130 et NASA NHB 5300.4( 3H).
Seules les enveloppes de fils précédemment testées et qualifiées font l'objet de la présente norme, qui énumère quatre calibres de câbles allant de 24 à 30 AWG et trois dimensions de bornes allant jusqu’à 1,78 mm maximum en diagonale. Une procédure pas à pas est donnée à titre informatif dans l’Annexe A.
L’utilisation de câbles de calibre supérieur et de bornes de dimensions plus grandes n’est, d'une manière générale, pas proscrite. Cependant, dans ce cas, le choix de la méthode de l'enveloppe de fils pour réaliser l'interconnexion électrique est peu probable. Il est plus vraisemblable que les câbles d'un calibre supérieur à 24 AWG comportent plusieurs torons et soient terminés par une brasure conformément à l'ECSS-Q-ST-70-08, ou par sertissage conformément à l'ECSS-Q-ST-70-26.
Zagotavljanje varnih proizvodov v vesoljski tehniki - Spajanje z žičnim ovijanjem kontaktov visoko zanesljivih električnih konektorjev
Ta standard določa zahteve za pripravo in sestavljanje delov, ki se spajajo z žičnim ovijanjem, ter tudi za izbiro, kalibracijo, uporabo in potrjevanje orodij za spajanje z žičnim ovijanjem. Pokriti, z žico oviti konektorji so prikazani na sliki 1.1. Ta tip konektorja je podoben konektorju »zaželen razred A« ali »spremenjen«, podrobno opisanem v dokumentih MIL STD 1130 in NASA NHB 5300.4(3H). V tem standardu so obravnavani samo predhodno preskušeni in kvalificirani z žico oviti konektorji, kar zajema štiri velikosti žic, in sicer od 24 AWG do 30 AWG, ter tri velikosti zaključnih priključkov do največje diagonalne mere 1,78 mm. Koraki postopka so opisani v informativnem dodatku A. Uporaba večje žice in večjih priključkov ni splošno prepovedana, a ni verjetno, da bi bila pri takih merah za tehniko električnega povezovanja izbrana metoda ovijanja z žico. Namesto tega se predvideva, da bo žica, večja od 24 AWG, imela več plasti in bo zaključena s spajkanjem v skladu s standardom ECSS-Q-ST-70-08 ali s stiskalnim spajanjem v skladu s standardom ECSS-Q-ST-70-26. Zahteve za usposabljanje in certificiranje upravljavcev in inšpektorjev so določene v točki 5.6.7 ter v standardu ECSS-Q-ST-20. Ta standard napoveduje sprejetje zunanjega dokumenta na omejeni podlagi za uporabo v sistemu evropskega sodelovanja za standardizacijo na področju vesolja (ECSS) z veljavnostjo od datuma odobritve. Ta standard se lahko prilagodi posameznim lastnostim in omejitvam vesoljskega projekta v skladu s standardom ECSS-S-ST-00.
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
01-januar-2015
=DJRWDYOMDQMHYDUQLKSURL]YRGRYYYHVROMVNLWHKQLNL6SDMDQMH]åLþQLPRYLMDQMHP
NRQWDNWRYYLVRNR]DQHVOMLYLKHOHNWULþQLKNRQHNWRUMHY
Space product assurance - Wire wrapping of high-reliability electrical connections
Raumfahrtproduktsicherung - Umhüllung von Kabeln für hochzuverlässige elektrische
Verbindungen
Assurance produit des projets spatiaux - Enveloppe de fils pour connexion électrique à
fiabilité élevée
Ta slovenski standard je istoveten z: EN 16602-70-30:2014
ICS:
49.060 /HWDOVNDLQYHVROMVND Aerospace electric
HOHNWULþQDRSUHPDLQVLVWHPL equipment and systems
49.140 Vesoljski sistemi in operacije Space systems and
operations
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN 16602-70-30
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2014
ICS 49.140
English version
Space product assurance - Wire wrapping of high-reliability
electrical connections
Assurance produit des projets spatiaux - Enveloppe de fils Raumfahrtproduktsicherung - Umhüllung von Kabeln für
pour connexion électrique à fiabilité élevée hochzuverlässige elektrische Verbindungen
This European Standard was approved by CEN on 11 April 2014.
CEN and 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 CEN-CENELEC Management Centre or to any CEN and 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 CEN and CENELEC member into its own language and notified to the CEN-CENELEC Management Centre
has the same status as the official versions.
CEN and CENELEC members are the national standards bodies and national electrotechnical committees 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.
CEN-CENELEC Management Centre:
Avenue Marnix 17, B-1000 Brussels
© 2014 CEN/CENELEC All rights of exploitation in any form and by any means reserved Ref. No. EN 16602-70-30:2014 E
worldwide for CEN national Members and for CENELEC
Members.
Table of contents
Foreword . 5
1 Scope . 6
2 Normative references . 8
3 Terms, definitions and abbreviated terms . 9
3.1 Terms defined in other standards . 9
3.2 Terms specific to the present standard . 9
3.3 Abbreviated terms. 10
4 Principles . 11
5 Requirements . 12
5.1 Preparatory conditions . 12
5.1.1 Hazards, health and safety precautions . 12
5.1.2 Facilities . 12
5.1.3 Tools and equipment . 13
5.1.4 Configuration of process and workpiece . 15
5.1.5 Wire-wrap process certification . 16
5.1.6 Requirements for new combinations of wire-wrap . 16
5.2 Material selection . 17
5.2.1 Wire . 17
5.2.2 Terminal post . 19
5.3 Wire-wrap operation . 22
5.3.1 Preparation for wire-wrapping . 22
5.3.2 Process and criteria . 22
5.3.3 Number of turns on terminal post . 24
5.3.4 Wire routing. 25
5.3.5 Rework . 25
5.4 Test methods . 26
5.4.1 General . 26
5.4.2 Stripping force . 26
5.4.3 Unwrapping test . 27
5.4.4 Connection resistance . 27
5.4.5 Gas-tightness test . 28
5.4.6 Metallography . 28
5.4.7 Records of tests . 29
5.5 Workmanship and acceptance criteria . 29
5.5.1 Visual inspection . 29
5.5.2 Replacement and rework . 30
5.5.3 Performance tests . 31
5.6 Quality assurance . 32
5.6.1 General . 32
5.6.2 Traceability . 32
5.6.3 Data . 33
5.6.4 Nonconformance . 33
5.6.5 Calibration . 35
5.6.6 Workmanship standards. 35
5.6.7 Operator and inspector training and certification . 35
5.6.8 Inspections . 36
5.7 Document requirements. 37
Annex A (informative) Procedure for wire-rapping . 38
Bibliography . 46
Figures
Figure 1-1: Single wire-wrapped connection to square terminal and reference corner . 7
Figure 5-1: Minimum wrapping length on terminal post for each wire gauge . 21
Figure 5-2: Terminal post dimensions over minimum wrapping length for each terminal
size . 21
Figure 5-3: Position and regularity of wrap connection . 24
Figure 5-4: Wire-wrap rejection criteria which require reworking of the connection . 31
Figure 5-5: Guide to quality assurance during wire wrapping. 34
Figure 5-6: Guide to quality assurance during wire wrapping. 34
Figure A-1 : Examples of approved wire-wrapping tools . 39
Figure A-2 : Wire-wrap connection process . 40
Figure A-3 : Hand unwrapping tools . 41
Figure A-4 : Example of a daily process control sheet for test samples . 43
Figure A-5 : Stripping force test fixture . 44
Figure A-6 : Connection resistance test . 44
Figure A-7 : Typical cross-section of wire-wrap (×64) . 45
Figure A-8 : Gas-tightness test result . 45
Tables
Table 5-1: Wire size to terminal post combinations . 22
Table 5-2: Minimum number of wire turns on terminal post . 25
Table 5-3: Minimum stripping force . 27
Table 5-4: Test current for connection resistance . 28
Foreword
This document (EN 16602-70-30:2014) has been prepared by Technical
Committee CEN/CLC/TC 5 “Space”, the secretariat of which is held by DIN.
This standard (EN 16602-70-30:2014) originates from ECSS-Q-ST-70-30C.
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 April 2015,
and conflicting national standards shall be withdrawn at the latest by April
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 has been prepared under a mandate given to CEN by the
European Commission and the European Free Trade Association.
This document has been developed to cover specifically space systems and has
therefore precedence over any EN covering the same scope but with a wider
domain of applicability (e.g. : aerospace).
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.
Scope
This Standard specifies requirements for preparing and assembling parts to be
joined by wire wrapping, as well as the selection, calibration, use and
certification of wire wrapping tools.
The covered wire-wrapped connections are illustrated in Figure 1-1.
This type of connection is similar to “Class A preferred” or “modified”
connection detailed in MIL-STD-1130, and NASA NHB 5300.4(3H).
Only previously tested and qualified wire-wrapped connections are covered by
this Standard, which includes four wire sizes from 24 AWG to 30 AWG, and
three terminal post sizes up to 1,78 mm maximum diagonal. A step-by step
procedure is covered in the informative Annex A.
The use of heavier gauge wire and larger terminals is not generally prohibited,
but it is considered unlikely that for such dimensions the method of
wire-wrapping would be chosen as the electrical interconnection technique.
Instead it is assumed that wire larger than 24 AWG will be multi-stranded and
terminated by soldering in conformance with ECSS-Q-ST-70-08, or by crimping
in conformance with ECSS-Q-ST-70-26.
Training and certification requirements for operators and inspectors are defined
in clause 5.6.7 and in ECSS-Q-ST-20.
With effect from the date of approval, this Standard announces the adoption of
the external document on a restricted basis for use in the European Cooperation
for Space Standardization (ECSS) system.
This standard may be tailored for the specific characteristic and constraints of a
space project in conformance with ECSS-S-ST-00.
Terminal post
End tail
Uninsulated wire turns
Insulated wire
Reference corner
(and at 1 below)
3 4
Shows either 3 or 4 corners of contact of insulation minimum ¾ turn of insulated
wire
Figure 1-1: Single wire-wrapped connection
...
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