1、BRITISH STANDARD AEROSPACE SERIES BS EN 2991:1996 Nickel-cadmium batteries of format Etype The European Standard EN 2991:1996 has the status of a British Standard ICS 29.220.30; 49.060BSEN 2991:1996 This British Standard, having been prepared under the direction of the Engineering Sector Board, was
2、published under the authority of the Standards Board and comes intoeffect on 15 November 1996 BSI 11-1998 The following BSI references relate to the work on this standard: Committee reference ACE/6 Draft for comment 92/83156 DC ISBN 0 580 26329 0 Committees responsible for this British Standard The
3、preparation of this British Standard was entrusted to Technical Committee ACE/6, Aerospace batteries, upon which the following bodies were represented: British Airways British Cable Makers Confederation British Rubber Manufacturers Association Civil Aviation Authority (Airworthiness Division) Federa
4、tion of the Electronics Industry Ministry of Defence Society of British Aerospace Companies Ltd. Amendments issued since publication Amd. No. Date CommentsBSEN 2991:1996 BSI 11-1998 i Contents Page Committees responsible Inside front cover National foreword ii Foreword 2 1 Scope 3 2 Normative refere
5、nces 3 3 Characteristics 3 4 Designation 5 5 Marking 5 6 Log book 5 7 Technical specification 5 Figure 1 3 Table 1 4 Table 2 4 Table 3 5 Table 4 5 Table 5 5 List of references Inside back coverBSEN 2991:1996 ii BSI 11-1998 National foreword This British Standard has been prepared by Technical Commit
6、tee ACE/6 and is the English language version of EN 2991:1996 Aerospace series Nickel-cadmium batteries of format E type published by the European Committee for Standardization (CEN). EN 2991 was produced as a result of international discussion in which the UnitedKingdom took an active part. A Briti
7、sh Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Cross-reference Publication referred to Correspo
8、nding British Standard EN 2570:1996 BS EN 2570:1996 Nickel-cadmium batteries Technical specification Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, the EN title page, pages 2 to 6, an inside back cover and a back cover. This standard has been updated (
9、see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2991 July 1996 ICS 49.060 Descriptors: Aircraft industry, aircraft equipment, electric batteries, storage batteri
10、es, nickel cadmium batteries, specifications, dimensions English version Aerospace series Nickel-cadmium batteries of format E type Srie arospatiale Batteries daccumulateurs au nickel-cadmium du type de format E Luft- und Raumfahrt Nickel-Cadmium-Batterien Bauart der Grenausfhrung E This European St
11、andard was approved by CEN on 1995-06-29. 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 lists and bibliographical references concerning su
12、ch 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 responsibility of a CEN member into its own language
13、 and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and Unit
14、ed Kingdom. CEN European Committee for StandardizationComit Europen de Normalisation Europisches Komitee fr NormungCentral Secretariat: rue de Stassart 36, B-1050 Brussels 1996 Copyright reserved to CEN membersRef. No. EN 2991:1996 EEN2991:1996 BSI 11-1998 2 Foreword This European Standard has been
15、prepared by the European Association of Aerospace Manufacturers (AECMA). After inquiries 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 AECMA, prior to i
16、ts 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 January 1997 and conflicting national standards shall be withdrawn at the latest by January 1997. According to the CEN/CENEL
17、EC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the
18、United Kingdom.EN2991:1996 BSI 11-1998 3 1 Scope This standard specifies the characteristics of nickel-cadmium batteries of format E type. NOTEFormat E type makes it possible to differentiate between the title of the present standard and those of the other product standards for nickel-cadmium batter
19、ies. 2 Normative references This European Standard incorporates by dated or undated reference provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or re
20、visions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 2570, Aerospace series Nickel-cadmium batteries Technical specification. 3 Characteristics
21、3.1 Dimensions See Figure 1. Figure 1EN2991:1996 4 BSI 11-1998 3.2 Physical characteristics See Table 1. Table 1 3.3 Electrical characteristics See Table 2. Table 2 Characteristics Requirements Mass (with accessories) 40 kg max. Accessories a Marking See 5. Acceleration See EN 2570 (for crash no ign
22、ition). Electrolyte spillage See EN 2570. Seal of lid a See EN 2570. Minimum air flow rate of ventilation 0,027 m 3 /min Resistance to salt spray See EN 2570. a Verify if required by the designation. Requirements Characteristics Test conditions Batteries Normal High power Rated capacity C 1 34 Ah 34
23、 Ah Number of cells According to code a According to code a 1 to 4 5 to 7 Rated voltage 1,2 V per cell Available capacities See EN 2570. See EN 2570. See EN 2570. As % of C 1Ah 30 min 4 to 6 Charge at 18 C 1 h 8 to 12 3 h 15 to 20 Charge recovered See EN 2570. % of recharged capability in30 min 23 C
24、 70 70 50 C 72 72 Prolonged charge at high temperature See EN 2570. See EN 2570. Temperature See EN 2570. Starting I at the 10th s 5 C 1A 10 C 1A capability I from the 11th to the 30th s b U at the 15th s 14 V 14 V Endurance See EN 2570. 5 C 1A 10 C 1A Short-circuit See EN 2570. I min.: 1 200 A U mi
25、n.: 2,5 V a See Table 3. b Value fixed by the manufacturerEN2991:1996 BSI 11-1998 5 4 Designation EXAMPLE: NOTEIf necessary, the code I9005 shall be placed between the description block and the identity block. Table 3 Table 4 Table 5 5 Marking In addition to the identity block (see 4), each battery
26、shall bear the following information: provisioning number (for military aircraft only); name of manufacturer; manufacturers reference; country and location of manufacture; modification index where applicable; serial number; date of manufacture (month, year or code); safety instructions; polarity (se
27、e EN 2570); nominal voltage; rated capacity; number of cells. Unless otherwise indicated, the position of these markings is left to the manufacturers discretion. 6 Log book It shall contain the information of 5, information required by EN 2570 and that concerning any special particulars. 7 Technical
28、 specification EN 2570 Code Cells Electrolyte Number Power 1 20 Normal 2 19 Normal Normal 3 20 Reserve 4 10 Normal 5 20 Normal 6 19 High Normal 7 20 Reserve Code Case and lid 1 Sealed lid 2 Code 1 + forced ventilation 3 Code 1 + aerobatic flights 4 Lid not sealed 5 Apertures in case and lid Code Acc
29、essories 1 No accessories 2 With handles 3 With temperature sensor 4 With temperature sensor and handles6 blankBSEN2991:1996 BSI 11-1998 List of references See national foreword.BSI 389 Chiswick High Road London W4 4AL | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
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