FprEN 13763-22
(Main)Explosives for civil uses - Detonators and detonating cord relays - Part 22: Verification of capacitance, insulation resistance and insulation breakdown of leading wires
Explosives for civil uses - Detonators and detonating cord relays - Part 22: Verification of capacitance, insulation resistance and insulation breakdown of leading wires
This document specifies methods for the determination of the capacitance, insulation resistance and insulation breakdown of leading wires of electric detonators.
This document applies to explosives for civil uses.
Explosivstoffe für zivile Zwecke - Zünder und Sprengschnurverbinder - Teil 22: Überprüfung der Kapazität, des Isolationswiderstandes und der Durchschlagsspannung der Zünderdrahtisolierung
Dieses Dokument legt Verfahren für die Bestimmung der Kapazität, des Isolationswiderstandes und der Durchschlagsspannung der Zünderdrahtisolierung von elektrischen Zündern fest.
Dieses Dokument gilt für Explosivstoffe für zivile Zwecke.
Explosifs à usage civil - Détonateurs et relais pour cordeau détonant - Partie 22 : Vérification de la capacité électrique, de la résistance d’isolement et de la rupture d’isolement des fils d’amorce
Le présent document spécifie des méthodes de détermination de la capacité électrique, de la résistance d’isolement et de la rupture d’isolement des fils d’amorce des détonateurs électriques.
Le présent document s’applique aux explosifs à usage civil.
Eksplozivi za civilno uporabo – Detonatorji in zakasnilniki – 22. del: Ugotavljanje kapacitivnosti, izolacijske upornosti in porušitve izolacije vodnikov
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-april-2021
Eksplozivi za civilno uporabo – Detonatorji in zakasnilniki – 22. del: Ugotavljanje
kapacitivnosti, izolacijske upornosti in porušitve izolacije vodnikov
Explosives for civil uses - Detonators and relays - Part 22: Determination of capacitance,
insulation resistance and insulation breakdown of leading wires
Explosivstoffe für zivile Zwecke - Zünder und Verzögerungselemente - Teil 22:
Bestimmung der Kapazität, des Isolationswiderstandes und der Durchschlagsspannung
der Zünderdrahtisolierung
Explosifs à usage civil - Détonateurs et relais - Partie 22 : Détermination de la capacité
électrique, de la résistance d'isolation et de la rupture d'isolation des fils d'amorce
Ta slovenski standard je istoveten z: prEN 13763-22
ICS:
71.100.30 Eksplozivi. Pirotehnika in Explosives. Pyrotechnics and
ognjemeti fireworks
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
EUROPEAN STANDARD
prEN 13763-22
NORME EUROPÉENNE
EUROPÄISCHE NORM
April 2021
ICS 71.100.30 Will supersede EN 13763-22:2003
English Version
Explosives for civil uses - Detonators and detonating cord
relays - Part 22: Determination of capacitance, insulation
resistance and insulation breakdown of leading wires
Explosifs à usage civil - Détonateurs et relais pour Explosivstoffe für zivile Zwecke - Zünder und
cordeau détonant - Partie 22: Détermination de la Sprengschnurverbinder - Teil 22: Bestimmung der
capacité électrique, de la résistance d'isolation et de la Kapazität, des Isolationswiderstandes und der
rupture d'isolation des fils d'amorce Durchschlagsspannung der Zünderdrahtisolierung
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 321.
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
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 13763-22:2021 E
worldwide for CEN national Members.
prEN 13763-22:2021 (E)
Contents Page
European foreword . 3
Introduction . 5
1 Scope . 6
2 Normative references . 6
3 Terms and definitions . 6
4 Principle . 6
5 Reagents and/or other material . 6
6 Apparatus . 6
7 Preparation and handling of test samples and test pieces . 7
7.1 For determination of capacitance, determination of resistance to high voltage and
determination of insulation resistance . 7
7.2 For determination of insulation resistance of wires stressed by kinks in low
temperature . 7
8 Procedure . 8
8.1 Determination of capacitance . 8
8.2 Determination of resistance to high voltage . 8
8.3 Determination of insulation resistance . 8
8.4 Determination of insulation resistance of wires stressed by kinks in low temperature
..................................................................................................................................................................... 8
9 Expression of results . 8
10 Test report . 8
Annex ZA (informative) Relationship between this European Standard and the essential
safety requirements of Directive 2014/28/EU relating to the making available on the
market and supervision of explosives for civil uses aimed to be covered . 9
Bibliography . 10
prEN 13763-22:2021 (E)
European foreword
This document (prEN 13763-22:2021) has been prepared by Technical Committee CEN/TC 321
“Explosives for civil uses”, the secretariat of which is held by UNE.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 13763-22:2003.
In comparison with the previous edition, the following technical modifications have been made:
a) Clause 1, Scope, now specifies that the document is applicable to explosives for civil uses;
b) Clause 4, Principle, has been added;
c) Clause 7, Preparation and handling of test samples and test pieces, has been revised and 7.2, For
determination of insulation resistance of wires stressed by kinks in low temperature, has been added.
d) Annex A, Range of applicability of the test method, has been removed;
e) Annex ZA has been updated.
This document has been prepared under a Standardization Request (M/562) annexed to the Commission
Implementing Decision C(2019)6634 final as regards Explosives for civil uses given to CEN by the
European Commission and the European Free Trade Association, and supports Essential Safety
requirements of Directive 2014/28/EU.
For relationship with Directive 2014/28/EU, see informative Annex ZA, which is an integral part of this
document.
EN 13763, Explosives for civil uses — Detonators and detonating cord relays, is currently composed with
the following parts:
— Part 1: Requirements
— Part 2: Verification of thermal stability
— Part 3: Determination of sensitiveness to impact
— Part 4: Determination of resistance to abrasion of leading wires and shock tubes
— Part 5: Determination of resistance to cutting damage of leading wires and shock tubes
— Part 6: Determination of resistance to cracking in low temperatures of leading wires
— Part 7: Determination of the mechanical strength of leading wires, shock tubes, connections, crimps and
closures
— Part 8: Determination of resistance to vibration
— Part 9: Determination of resistance to bending of detonators
— Part 11: Determination of drop resistance of detonators and relays
prEN 13763-22:2021 (E)
— Part 12: Determination of resistance to hydrostatic pressure
— Part 13: Determination of resistance of electric detonator to electrostatic discharge
— Part 15: Determination of equivalent initiating capability
— Part 16: Determination of delay accuracy
— Part 17: Determination of no-fire current of electric detonators
— Part 18: Determination of series firing current of electric detonators
— Part 19: Determination of firing pulse of electric detonators
— Part 20: Determination of total resistance of electric detonators
— Part 21: Determination of flash-over voltage of electric detonators
— Part 22: Determination of capacitance, insulation resistance and insulation breakdown of leading wires
— Part 23: Determination of the shock-wave velocity of shock tube
— Part 24: Determination of the non-conductivity of shock tube
— Part 25: Determination of transfer capacity of relay and coupling accessories
— Part 26: Definitions, methods and requirements for devices and accessories for reliable and safe function
of detonators and relays
— Part 27: Definitions, methods and requirements for electronic initiation system
prEN 13763-22:2021 (E)
Introduction
During blasting, electric detonators are usually connected in series and often require high voltages to
ensure correct initiation. Detonators can also be subjected to high voltages caused by electrostatic
charging of the firing circuit during loading. To assess the ability of detonators and their leading wires to
withstand these voltages, without misfire or premature initiation, it is essential;
— to determine the value of applied DC voltage which causes flash-over inside the detonator shell;
— to determine the capacitance of the leading wires to ensure that they cannot be charged to a
dangerous level;
— to determine the insulation resistance of the leading wires;
— to check that there is no breakdown of the leading wire insulation when subjected to high voltage.
The flash-over voltage is determined in prEN 13763-21:2021.
prEN 13763-22:2021 (E)
1 Scope
This document specifies methods for the determination of the capacitance, insulation resistance and
insulation breakdown of leading wires of electric detonators.
This document applies to explosives for civil uses.
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.
prEN 13857-1:2021, Explosives for civil uses — Part 1: Terminology
prEN 13763-6:2021, Explosives for civil uses — Detonators and detonating cord relays - Part 6:
Determination of resistance to cracking in low temperatures of leading wires
EN ISO 3696:1995, Water for analytical laboratory use — Specification and test methods (ISO 3696:1987)
3 Terms and definitions
For the purposes of this document, the terms and definitions given in prEN 13857-1:2021 apply.
4 Principle
The test piece and a copper electrode are submerged into a specified conductive solution. The
capacitance, current leakage and insulation resistance are then measured between the twisted bare ends
of the test piece and the copper electrode.
5 Reagents and/or other material
Conductive solution, consisting of water, conforming to grade 3 of EN ISO 3696:1995, and 3 % sodium
chloride with a purity greater than 99 %.
6 Apparatus
6.1 Meter, capable of measuring capacitance with an accuracy to 1,0 %.
6.2 Beaker, of suitable size and in a non-conductive material.
6.3 A copper electrode
6.4 Conditioning chamber, capable of maintaining a temperature of (20 ± 2) °C for 24 h and
(40 ± 2) °C for 2 h or higher if claimed by the manufacturer.
6.5 A high voltage generator, capable of maintaining (5 000 ± 50) V between the twisted ends of the
leading wire conductor and the electrode.
6.6 Meter, capable of measuring voltage in the range of 0 kV to 5 kV and accurate to 1,5 %.
6.7 Meter, capable of measuring insulation resistance up to 100 MΩ, accurate to 1,0 %, and capable of
giving a voltage of (500 ± 10) V.
prEN 13763-22:2021 (E)
7 Preparation and handling of test samples and test pieces
7.1 For determination of capacitance, determination of resistance to high voltage and
determination of insulation resistance
Test samples for detonators should be handled according to EN ISO/IEC 17025:2017, 7.4.
Select 25 lengths of leading wire, from 25 detonators of a specific type having the same dimensions,
leading wire insulation and conductor material.
Mark a length of (1 ± 0,05) m on the insulation of each leading wire sample.
Cut the wire a few decimetres longer than the marked length.
Fold the wire in the middle taking care not to make a sharp kink in the insulation at the mid-point.
Strip approximately three centimetres of insulation from each end of the wire and twist the two bare ends
of the conductor material together.
Wind the folded wire into a loose cylindrical spiral and place it inside the beaker so that the twisted bare
ends of the conductor material ar
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