EN 2349-312-2006 en Aerospace series - Requirements and test procedures for relays and contactors - Part 312 Electrical service life - Mixed load《航空航天系列 继电器和电流接触器要求和试验程序 第312部分 电器使.pdf

《EN 2349-312-2006 en Aerospace series - Requirements and test procedures for relays and contactors - Part 312 Electrical service life - Mixed load《航空航天系列 继电器和电流接触器要求和试验程序 第312部分 电器使.pdf》由会员分享，可在线阅读，更多相关《EN 2349-312-2006 en Aerospace series - Requirements and test procedures for relays and contactors - Part 312 Electrical service life - Mixed load《航空航天系列 继电器和电流接触器要求和试验程序 第312部分 电器使.pdf（10页珍藏版）》请在麦多课文档分享上搜索。

1、BRITISH STANDARDBS EN 2349-312:2006Aerospace series Requirements and test procedures for relays and contactors Part 312: Electrical service life Mixed loadThe European Standard EN 2349-312:2006 has the status of a British StandardICS 49.060g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54

2、g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 2349-312:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January 2007 BSI 2007ISBN 978 0

3、580 50027 5National forewordThis British Standard was published by BSI. It is the UK implementation of EN 2349-312:2006. 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 Switchin

4、g devices.A list of organizations represented on ACE/6/-/4 can 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

5、from legal obligations.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 2349-312October 2006ICS 49.060English VersionAerospace series - Requirements and test procedures for relaysand contactors - Part 312: Electrical service life - Mixed load

6、Srie arospatiale - Exigences et mthodes dessais desrelais et contacteurs - Partie 312 : Pouvoirs decommutation - Charges combinesLuft- und Raumfahrt - Anforderungen und Prfverfahren frRelais und Schaltschtze - Teil 312: ElektrischeLebensdauer - MischlastThis European Standard was approved by CEN on

7、19 May 2006.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obt

8、ained 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 translationunder the responsibility of a CEN member into its own language and notified to the Central Secre

9、tariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, France,Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portug

10、al, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre: rue de Stassart, 36 B-1050 Brussels 2006 CEN All rights of exploitation in any form and by any means rese

11、rvedworldwide for CEN national Members.Ref. No. EN 2349-312:2006: E2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Mounting method.4 4 Test procedures.4 5 Test criteria.6 6 Verification tests6 EN 2349-312:20063 Foreword This document (EN 2349-312:2006) has been prepared by the AeroSpa

12、ce 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 countries of ASD, prior t

13、o 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. According to the CEN/CENEL

14、EC Internal Regulations, the national standards organizations of the 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

15、, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. EN 2349-312:20064 1 Scope This standard specifies a method for testing the electrical service life - mixed load of relays and contactors. It shall be used together with EN 2349-10

16、0. 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 referenced document (including any amendments) applies. EN 2349-100, Aerospace

17、series Requirements and test procedures for relays and contactors Part 100: General requirements 1)EN 2349-302, Aerospace series Requirements and test procedures for relays and contactors Part 302: Insulation resistance EN 2349-303, Aerospace series Requirements and test procedures for relays and co

18、ntactors Part 303: Dielectric strength EN 2349-307, Aerospace series Requirements and test procedures for relays and contactors Part 307: Contact voltage drop EN 2349-412, Aerospace series Requirements and test procedures for relays and contactors Part 412: Seal 3 Mounting method The relay or contac

19、tor shall be wired in accordance with EN 2349-100 and the rated contact load. The relay or contactor shall be mounted and placed in an air circulating heating cabinet. 4 Test procedures 4.1 Each normally closed and normally open contact shall connect, conduct and disconnect the specified loads. The

20、loads shall be connected to (28 1) V d.c. 4.2 Unless otherwise specified, the operating and resting contacts shall be loaded as follows: a) for relays or contactors with a nominal contact rating of less than 20 A: 1) 0,5 A resistive load; 2) 0,3 A inductive load; 3) 0,1 A resistive load; 4) rated re

21、sistive load. 1) In preparation at the date of publication of this standard. EN 2349-312:20065 b) for relays or contactors with a nominal contact rating of more than 20 A: 1) 10 % of the rated resistive load; 2) 10 % of the rated resistive load; 3) 10 % of the rated resistive load; 4) rated resistiv

22、e load. 4.3 For relays or contactors with more than two poles, the above loads shall be applied in the same sequence to the other poles. 4.4 Each contact shall switch one load only in each case. 4.5 The resting and operating contacts shall be tested simultaneously. 4.6 The coil of the relay or conta

23、ctor shall be energized at the rated voltage. 4.7 The contacts shall be monitored for operation. 4.8 Each defective switching operation shall constitute a failure. 4.9 The contact voltage drop shall be measured for each switching operation. The values shown in Table 1 shall not be exceeded. Table 1

24、Contact voltage drop before and during mixed load testing Contact voltage drop during the test mV Rated resistive contact current A Contact voltage drop before test mV 0,5 A 0,3 A 0,1 A Resistive load 5 10 15 20 150 150 150 150 40 32 30 30 24 20 18 18 8 7 6 6 175 175 175 175 4.10 For relays or conta

25、ctors with rated contact current 20 A, the maximum permissible contact voltage drop carrying 10 % of the rated load shall be calculated as follows: 000105,015,021d+=IIU Where Udis the voltage drop, in millivolts; I1is the load current, in amperes; I2is the rated current, in amperes. EN 2349-312:2006

26、6 4.11 The test shall be performed at the maximum permissible temperature, as defined in the product standard. During the test the housing of the relay or contactor shall be connected to the earth of the electrical installation by a fuse with a rating of 5 % of the rated resistive contact current, b

27、ut not greater than 3 A. Blowing of the fuse shall constitute a failure. 4.12 Number of switching cycles: see product standard. One switching cycle comprises: coil energized time: (29 3) s; coil de-energized time: (1,5 0,5) s. 5 Test criteria No electrical or mechanical failure; no sticking or seizi

28、ng of contacts; no blown fuse; the voltage drop on the contacts shall not exceed the values shown in Table 1. 6 Verification tests Test in accordance with EN 2349-302, EN 2349-303, EN 2349-307 and EN 2349-412. EN 2349-312:2006blankBS EN 2349-312:2006BSI389 Chiswick High RoadLondonW4 4ALBSI British S

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