SIST EN 16812:2016
(Main)Textiles and textile products - Electrically conductive textiles - Determination of the linear electrical resistance of conductive tracks
Textiles and textile products - Electrically conductive textiles - Determination of the linear electrical resistance of conductive tracks
This European Standard describes a test method for the determination of the linear electric resistance
of conductive tracks for textile structures or intended for application in/ to textiles, e.g. yarns, printed
or coated tracks, ropes, ribbons and webbing.
This European Standard is designed for materials showing ohmic behaviour.
This European Standard is designed for conductive tracks where electrical contact between the
measurement electrodes and the conductive track is possible.
Textilien und textile Erzeugnisse - Elektrisch leitfähige Textilien - Bestimmung des elektrischen Widerstands von textilbasierenden Strukturen
Diese Europäische Norm beschreibt ein Prüfverfahren zur Bestimmung des linearen elektrischen Widerstands von Leiterbahnen für textile Strukturen oder die für die Anwendung in/an Textilien, z. B. als Garne, bedruckte oder beschichtete Leiter, Seile, Bänder und Gurte vorgesehen sind.
Diese Europäische Norm ist für Stoffe mit einem ohmschen Verhalten ausgelegt.
Diese Europäische Norm ist für Leiterbahnen ausgelegt, bei denen ein elektrischer Kontakt zwischen den Messelektroden und der Leiterbahn möglich ist.
Textiles et produits textiles - Textiles électriquement conducteurs - Détermination de la résistance électrique linéaire des pistes conductrices
La présente Norme européenne décrit une méthode d'essai permettant de déterminer la résistance électrique linéaire de pistes conductrices de/pour structures textiles ou destinées à être appliquées dans/sur des textiles, par exemple des fils, des pistes imprimées ou déposées, des câbles, des rubans et des sangles.
La présente Norme européenne est conçue pour des matières présentant un comportement ohmique.
La présente Norme européenne est conçue pour des pistes conductrices dans lesquelles il est possible de réaliser un contact électrique entre les électrodes de mesure et la piste conductrice.
Tekstilije in tekstilni izdelki - Tekstilije, ki prevajajo elektriko - Ugotavljanje linearne električne upornosti prevodnih prog
Ta evropski standard opisuje preskusno metodo za ugotavljanje linearne električne upornosti prevodnih prog za tekstilne konstrukcije oziroma namenjene za uporabo v tekstilijah, npr. preje, tiskane ali prevlečene proge, vrvi, trakove in mreže.
Ta evropski standard je zasnovan za materiale, ki kažejo značilnosti ohmskega obnašanja.
Ta evropski standard je zasnovan za prevodne proge, pri katerih obstaja možnost električnega stika med merilnimi elektrodami in prevodno progo.
General Information
Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Textilien und textile Erzeugnisse - Elektrisch leitfähige Textilien - Bestimmung des elektrischen Widerstands von textilbasierenden StrukturenTextiles et produits textiles - Textiles électriquement conducteurs - Détermination de la résistance électrique linéaire des pistes conductricesTextiles and textile products - Electrically conductive textiles - Determination of the linear electrical resistance of conductive tracks59.080.01Tekstilije na splošnoTextiles in generalICS:Ta slovenski standard je istoveten z:EN 16812:2016SIST EN 16812:2016en,fr,de01-julij-2016SIST EN 16812:2016SLOVENSKI
STANDARD
SIST EN 16812:2016
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16812
April
t r s x ICS
w {ä r z rä r s English Version
Textiles and textile products æ Electrically conductive textiles æ Determination of the linear electrical resistance of conductive tracks Textiles et produits textiles æ Textiles électriquement conducteurs æ Détermination de la résistance électrique linéaire des pistes conductrices
Textilien und textile Erzeugnisse æ Elektrisch leitfähige Textilien æ Bestimmung des linearen elektrischen Widerstands von Leiterbahnen This European Standard was approved by CEN on
s u February
t r s xä
egulations which stipulate the conditions for giving this European Standard the status of a national standard without any alterationä Upætoædate lists and bibliographical references concerning such national standards may be obtained on application to the CENæCENELEC Management Centre or to any CEN memberä
translation under the responsibility of a CEN member into its own language and notified to the CENæCENELEC Management Centre has the same status as the official versionsä
CEN members are the national standards bodies of Austriaá Belgiumá Bulgariaá Croatiaá Cyprusá Czech Republicá Denmarká Estoniaá Finlandá Former Yugoslav Republic of Macedoniaá Franceá Germanyá Greeceá Hungaryá Icelandá Irelandá Italyá Latviaá Lithuaniaá Luxembourgá Maltaá Netherlandsá Norwayá Polandá Portugalá Romaniaá Slovakiaá Sloveniaá Spainá Swedená Switzerlandá Turkey andUnited Kingdomä
EUROPEAN COMMITTEE FOR STANDARDIZATION COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,
B-1000 Brussels
9
t r s x CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Membersä Refä Noä EN
s x z s tã t r s x ESIST EN 16812:2016
EN 16812:2016 (E) 2 Contents Page European foreword . 3 1 Scope . 4 2 Normative references . 4 3 Terms and definitions . 4 4 Principle of test . 5 5 Test equipment . 5 6 Test specimens . 6 6.1 Number of test specimens . 6 6.2 Dimensions of specimens . 6 6.3 Conditioning . 6 6.4 Relaxation . 6 7 Test set-up . 6 7.1 General . 6 7.2 Test set-up for a “four electrode – four wire method” . 6 7.3 Test set-up for a “two electrode – four wire method” . 7 8 Test procedure . 8 8.1 General . 8 8.2 Preparation of conductive track contact points . 8 8.3 Tensioning . 9 8.3.1 General . 9 8.3.2 Yarns . 9 8.3.3 Fabrics . 9 8.4 Contacting/ clamping of the specimen . 9 8.5 Modus operandi and calculation of results. 10 8.5.1 “Four electrode – four wire method” . 10 8.5.2 “Two electrode - four wire measurement” . 10 9 Test report . 11 Annex A (informative)
Four point (wire) Kelvin method . 13 A.1 “Four electrode – four wire method” . 13 A.2 “Two electrode – four wire method” . 14 Bibliography . 15
SIST EN 16812:2016
EN 16812:2016 (E) 3 European foreword This document (EN 16812:2016) has been prepared by Technical Committee CEN/TC 248 “Textiles and textile products”, the secretariat of which is held by BSI. 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 October 2016, and conflicting national standards shall be withdrawn at the latest by October 2016. 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. 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. SIST EN 16812:2016
EN 16812:2016 (E) 4 1 Scope This European Standard describes a test method for the determination of the linear electric resistance of conductive tracks for textile structures or intended for application in/ to textiles, e.g. yarns, printed or coated tracks, ropes, ribbons and webbing. This European Standard is designed for materials showing ohmic behaviour. This European Standard is designed for conductive tracks where electrical contact between the measurement electrodes and the conductive track is possible. 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 of the referenced document (including any amendments) applies. EN 12127, Textiles — Fabrics — Determination of mass per unit area using small samples EN ISO 139, Textiles — Standard atmospheres for conditioning and testing (ISO 139) 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 textile-based electrically conductive track electrically conductive part of the textile having a length to width ratio of minimum 10 to 1 Note 1 to entry: Examples for textile based electrically conductive tracks and how to determine their length (L) and width (w) are given in Figure 1 3.2 Ohmic behaviour conductor’s behaviour following Ohm’s law Note 1 to entry: Ohms law is a fundamental law of electricity, stating that the voltage at the terminals of an ideal resistor is proportional to the current in the resistor (voltage U across the terminals equals resistance R times current I) [www.electropedia.org IEV ref 131–15–08]. Note 2 to entry: In this standard ‘U’ is used for the measured voltage, according to the IEC electropedia (www.electropedia.org). 3.3 linear electrical resistance RL electrical resistance per unit length of a track, as determined in this standard (expressed in ohm/m) 3.4 wire lead or measurement point used in the four point Kelvin method 3.5 electrode contact between the measurement wire and the sample SIST EN 16812:2016
EN 16812:2016 (E) 5
Figure 1 — Different types of conductive tracks, with indication on how to determine the width (W) and the length (L) of the track. Images adapted from EN ISO 8388 4 Principle of test This test describes a procedure to measure the linear electrical resistance of textile based electrically conductive tracks using the measurement principle of the four wire (four point) Kelvin method and a DC current source. This test method can be performed as “four electrode - four wire method” or “two electrode - four wire method”. By using four electrodes the contact resistances between the electrodes and the sample are compensated. As a result this method requires less measurements and calculations as compared to the “two electrode – four wire method”. This is why the “four electrode - four wire method” is preferred. In cases where it is not feasible to prepare the necessary four contacts for the electrodes, “the two electrode – four wire method” can be used. 5 Test equipment The test equipment shall consist of: — an electrical current source able to deliver a stable DC current in the range necessary for the measurement; — a volt-meter capable of measuring voltages in the range necessary for the measurement. NOTE An Ohm meter in accordance with EN 60051–6, suitable for four wire measurements, can also be used. — Contacting electrodes, which shall be clean, oxide free and undamaged, and suitable for low-resistance measurements e.g. made of chrome or gold finished copper. The electrodes shall be suitable for soft materials e.g. have a flat contact surface. — A calibrated ruler to measure the distance between the voltage electrodes (edge to edge), with the resolution of at least 3 significant digits in relation to the sample length. The ruler should preferably be integrated in the clamping device. SIST EN 16812:2016
EN 16812:2016 (E) 6 — An insulating surface on which the specimen is placed. An insulating surface has a surface resistance of > 109 the specimen can also be suspended in air. 6 Test specimens 6.1 Number of test specimens Five representative specimens per sample shall be tested. NOTE Resistance may depend on the orientation of the sample taken out of the textile structure. Additional specimens may be required as discussed in 8.5. 6.2 Dimensions of specimens The specimen length shall be chosen such that: — the distance d between the voltage electrodes is at least 10 times the width w of the conductive track; a recommended distance d is 50 cm, taking into account the requirements mentioned below. — the part between the voltage electrodes represents the full structure of the conductive track — the specimen fits into the measurement set-up, including clamping device and current electrodes. 6.3 Conditioning Test specimens shall be stored for at least 24 h in standard atmosphere conditions (20 °C and 65 % RH in accordance with EN ISO 139). 6.4 Relaxation Relaxation of the fabrics shall be performed according to EN 12127. It is important to ensure that the fabrics are in the relaxed state prior to testing. The fabrics shall be kept in a flat tension free state for at least 24h, during conditioning. Knitted fabrics may require a longer relaxation treatm
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