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1、BRITISH STANDARD BS EN 2349-304:2006 Aerospace series Requirements and test procedures for relays and contactors Part 304: Operate and release time The European Standard EN 2349-304:2006 has the status of a British Standard ICS 49.060 ? Licensed Copy: London South Bank University, London South Bank
2、University, Tue Jan 23 07:42:45 GMT+00:00 2007, Uncontrolled Copy, (c) BSI BS EN 2349-304:2006 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2007 BSI 2007 ISBN 978 0 580 50020 6 National foreword This British Standard was publish
3、ed by BSI. It is the UK implementation of EN 2349-304:2006. The UK participation in its preparation was entrusted by Technical Committee ACE/6, Aerospace avionic electrical and fibre optic technology, to Panel ACE/6/-/4, Aerospace Switching devices. A list of organizations represented on ACE/6/-/4 c
4、an be obtained on request to its secretary. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments issued since publicatio
5、n Amd. No. DateComments Licensed Copy: London South Bank University, London South Bank University, Tue Jan 23 07:42:45 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2349-304 October 2006 ICS 49.060 English Version Aerospace series - Requirements and
6、test procedures for relays and contactors - Part 304: Operate and release time Srie arospatiale - Exigences et mthodes dessais des relais et contacteurs - Partie 304 : Temps denclenchement et de dclenchement Luft- und Raumfahrt - Anforderungen und Prfverfahren fr Relais und Schaltschtze - Teil 304:
7、Ansprechzeit und Rckfallzeit This European Standard was approved by CEN on 10 May 2006. 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 list
8、s and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat 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 respon
9、sibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Irelan
10、d, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart,
11、36 B-1050 Brussels 2006 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 2349-304:2006: E Licensed Copy: London South Bank University, London South Bank University, Tue Jan 23 07:42:45 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 2 Con
12、tents Page Foreword3 1 Scope 4 2 Normative references4 3 Operate time.4 4 Release time.6 EN 2349-304:2006 Licensed Copy: London South Bank University, London South Bank University, Tue Jan 23 07:42:45 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 3 Foreword This document (EN 2349-304:2006) has been pre
13、pared 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 count
14、ries 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 April 2007, and conflicting national standards shall be withdrawn at the latest by April 2007. Attent
15、ion 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 t
16、he following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Sloven
17、ia, Spain, Sweden, Switzerland and the United Kingdom. EN 2349-304:2006 Licensed Copy: London South Bank University, London South Bank University, Tue Jan 23 07:42:45 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 4 1 Scope This standard specifies a method for testing the operating (actuating) and relea
18、sing time of relays and contactors. It shall be used together with EN 2349-100. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the re
19、ferenced document (including any amendments) applies. EN 2349-100, Aerospace series Requirements and test procedures for relays and contactors Part 100: General requirements 1) ISO 2678, Environmental tests for aircraft equipment Insulation resistance and high voltage tests for electrical equipment
20、3 Operate time 3.1 Test procedures The operate time shall be measured from the application of the rated voltage to the coil until the last normally- open contact has closed, see Figure 2. The operate time shall be evaluated without bounce time. The contact load shall be between 5 mA and 100 mA. The
21、open contact voltage shall be 6 V d.c. max. for relays or contactors of up to and including 25 A rating, and 28 V d.c. for relays or contactors above 25 A rating. For qualification tests, five measurements shall be taken and recorded. Figure 1 shows a typical test circuit. 3.2 Test criteria The rela
22、y or contactor shall operate within the time specified in the product standard. 1) In preparation at the date of publication of this standard. EN 2349-304:2006 Licensed Copy: London South Bank University, London South Bank University, Tue Jan 23 07:42:45 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 5
23、Figure 1 Test circuit for the determination of the actuation, release and bounce times Figure 2 Switch closure at t = 0, Operate time characteristics Figure 3 Switch opening at t = 0, Release time characteristics Key R1, R2 resistor 60 DUT device under test (relay) 1 trigger input self-synchronous 2
24、 signal input oscilloscope (vertical 3 ground input deflection) U1 control voltage U2 test voltage 6 V d.c. S switch a NO contact b NC contact Key 1 dynamic resistance effect t1 operate time t2 transfer time t3 contact break bounce duration t4 contact closing bounce duration (make bounces) Key 1 dyn
25、amic contact resistance effect t2 transfer time t3 contact break bounce duration t5 release time t6 contact make bounce duration EN 2349-304:2006 Licensed Copy: London South Bank University, London South Bank University, Tue Jan 23 07:42:45 GMT+00:00 2007, Uncontrolled Copy, (c) BSI 6 4 Release time
26、 4.1 Test procedures The release time shall be measured from removal of the rated voltage, see Figure 3: for normally-open contacts: until the last normally-open contact has opened; for change-over contacts: until the last normally-closed contact has closed (this time includes the transfer time). Th
27、e contact load shall be between 5 mA and 100 mA. The open contact voltage shall be 6 V d.c. for relays or contactors of up to and including 25 A rating, and 28 V d.c. for relays or contactors above 25 A rating. The release time shall be evaluated without bounce time. For qualification tests, five me
28、asurements shall be taken and recorded. Figure 1 shows a typical test circuit. 4.2 Test criteria The relay or contactor shall drop out within the time specified in the product standard. EN 2349-304:2006 Licensed Copy: London South Bank University, London South Bank University, Tue Jan 23 07:42:45 GM
29、T+00:00 2007, Uncontrolled Copy, (c) BSI blank Licensed Copy: London South Bank University, London South Bank University, Tue Jan 23 07:42:45 GMT+00:00 2007, Uncontrolled Copy, (c) BSI BS EN 2349-304:2006 BSI 389 Chiswick High Road London W4 4AL BSI British Standards Institution BSI is the independe
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