EN 2794-001-2014 en Aerospace series - Circuit breakers single-pole temperature compensated rated current 20 A to 50 A - Part 001 Technical specification《航空航天系列 断路器 单杆 温度补偿 额定电流20至.pdf

1、BSI Standards PublicationBS EN 2794-001:2014Aerospace series Circuitbreakers, single-pole,temperature compensated,rated current 20 A to 50 APart 001: Technical specificationBS EN 2794-001:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN 2794-001:2014.It supe

2、rsedes BS EN 2794-001:1999 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee ACE/6, Aerospace avionic electrical and fibre optictechnology.A list of organizations represented on this committee can beobtained on request to its secretary.This publication do

3、es not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 83445 5ICS 49.060Compliance with a British Standard cannot confer immunity fromlegal obl

4、igations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 January 2014.Amendments issued since publicationDate Text affectedBS EN 2794-001:2014EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2794-001 January 2014 ICS 49.060 Supersedes E

5、N 2794-001:1999English Version Aerospace series - Circuit breakers, single-pole, temperature compensated, rated current 20 A to 50 A - Part 001: Technical specification Srie arospatiale - Disjoncteurs unipolaires compenss en temprature, intensits nominales 20 A 50 A - Partie 001: Spcification techni

6、que Luft- und Raumfahrt - Schutzschalter, einpolig, temperaturkompensiert, Nennstrme von 20 A bis 50 A - Teil 001: Technische Lieferbedingungen This European Standard was approved by CEN on 28 September 2013. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate t

7、he conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standar

8、d 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 and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the nation

9、al standards bodies of 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, Slova

10、kia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means

11、 reserved worldwide for CEN national Members. Ref. No. EN 2794-001:2014 EBS EN 2794-001:2014EN 2794-001:2014 (E) 2 Contents Page Foreword 3 1 Scope 4 2 Normative references 4 3 Terms and definitions .4 4 Description .4 5 Design .5 6 Characteristics .6 7 Tests 7 8 Qualification tests . 15 9 Quality a

12、ssurance . 19 10 Marking 19 11 Delivery conditions . 19 12 Packaging 19 13 Storage . 19 BS EN 2794-001:2014EN 2794-001:2014 (E) 3 Foreword This document (EN 2794-001:2014) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN). After enquiries an

13、d 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 to its presentation to CEN. This European Standard shall be given the status of a national standa

14、rd, either by publication of an identical text or by endorsement, at the latest by July 2014, and conflicting national standards shall be withdrawn at the latest by July 2014. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN an

15、d/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 2794-001:1999. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austr

16、ia, 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

17、, Switzerland, Turkey and the United Kingdom. BS EN 2794-001:2014EN 2794-001:2014 (E) 4 1 Scope This European Standard specifies the single-pole temperature compensated circuit breakers rated from 20 A to 50 A and used in aircraft on-board circuits. It describes specific environmental, electrical an

18、d mechanical characteristics and the stringency of tests to be applied according to test methods of EN 3841-100. These circuit breakers are intended for use in aircraft with electrical supplies in accordance with EN 2282 (all categories). 2 Normative references The following documents, in whole or i

19、n 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 2083, Aerospace series - Copper and copper

20、 alloys conductors for electrical cables - Product standard EN 2282, Aerospace series - Characteristics of aircraft electrical supplies EN 2825, Aerospace series - Burning behaviour of non metallic materials under the influence of radiating heat and flames - Determination of smoke density EN 2826, A

21、erospace series - Burning behaviour of non metallic materials under the influence of radiating heat and flames - Determination of gas components in the smoke EN 3841-100 (all parts), Aerospace series Circuit breakers Test Methods Part 100: General EN 3844-1, Aerospace series - Flammability of non me

22、tallic materials - Part 1: Small burner test, vertical - Determination of the vertical flame propagation EN 9133, Aerospace series - Quality management systems - Qualification procedure for aerospace standard parts TR 6083, Aerospace series Cut-outs for installation of electrical components 1)3 Term

23、s and definitions For the purposes of this document, the terms and definitions given in EN 3841-100 apply. 4 Description These circuit breakers are operated by a “push-pull” type single push button (actuator) and with delayed action “trip-free” tripping. Their function is ensured up to the short-cir

24、cuit current. 1) Published as ASD-STAN Technical Report at the date of publication of this standard. http:/www.asd-stan.org/ BS EN 2794-001:2014EN 2794-001:2014 (E) 5 5 Design 5.1 Materials 5.1.1 Metallic materials All metallic parts shall be resistant to corrosion or finished against corrosion. Whe

25、n dissimilar materials are in close contact, an adequate protection against corrosion shall be used so that the electromotive force of the galvanic couple does not exceed 0,25 V. When bimetals are used, an eventual corrosion shall not affect the good operation of the circuit breaker. 5.1.2 Insulatio

26、n materials The insulating parts shall be made of auto-extinguishing or non-flammable materials; they shall not emit damaging or explosive vapours, even in presence of fire or internal electric arc. They shall be insensitive to moulds and microorganisms action. Application of any material or protect

27、ive coating which might crack, break on flake shall be forbidden. Materials which are not specified or which are not specially described shall be as light as possible for the requested use. Materials shall be selected according to security criteria (toxicity, smoke density) as defined in contractual

28、 documents. 5.2 Design 5.2.1 Insulating box The insulating box shall integrate besides the mechanism, the connection and attachment unit. 5.2.2 Free release mechanism Design of circuit breaker mechanism shall allow free release; i.e. the circuit breaker cuts out in case of overload, and remains cut

29、out even if the actuator is kept by force in engaged position. A new engagement of circuit breaker is only possible after a first total release of the control actuator. The operation in these conditions shall not affect further performances of the circuit breaker. 5.2.3 Attachment All visible parts

30、shall be black coloured and non-reflective. 5.2.4 Electrical connection units They shall be able to receive the lugs. BS EN 2794-001:2014EN 2794-001:2014 (E) 6 5.2.5 Control actuator In engaged position, the visible part of the control actuator shall be of the colour stated in the product standard.

31、In disengaged (or opened) position, the control actuator shall show a white strip. The outer part of this actuator shall be isolated from all undervoltage parts. The control actuator shall not stay in a transition position, or give a false indication about the circuit breaker condition. It shall not

32、 be removable. When pushing it, power contacts of the circuit breaker engage. When pulling it, power contacts of the circuit breaker open. The circuit breaker rating is indicated in indelible white colour on the front part of the control actuator. The product standard gives the digits positioning. 5

33、.2.6 Rating inviolability The circuit breaker shall be designed in such a way that the calibration unit cannot be reached without breaking a sealing. 5.2.7 Leakage lines The leakage lines and the minimal space to be foreseen between the undervoltage parts and any other part of the circuit breaker ma

34、de of non-insulating material, as well as between the undervoltage parts of opposite polarity, shall be sufficient to avoid any default or arcing in all uses and climatic conditions. 5.2.8 Protection against non-release Electrical overload happening on a circuit breaker locked in its engaged positio

35、n (sticked contacts or non-operating release mechanism), shall cause the opening of the circuit by circuit breaker destruction without any fire or important smoke release. 6 Characteristics 6.1 General characteristics See Table 1. BS EN 2794-001:2014EN 2794-001:2014 (E) 7 Table 1 General characteris

36、tics Designation Requirements Assembly See product standard. Mass See product standard. Operational altitude See product standard. 1 input terminals on power supply side (identified by digit 1) See product standard. 1 output terminals on distribution side (identified by digit 2) Operational ambient

37、temperatures limits From 55 C to 125 C Temperature compensation From 55 C to 125 C See product standard. Rating marking On control actuator (indelible white) 6.2 Ratings See product standard. 6.3 Nominal voltage of operational circuits See product standard. 6.4 Dimensional characteristics See produc

38、t standard. 6.5 Recommended panel mounting dimensions Panel cut-out : The panel cut-out is in accordance with designation TR6083C202. Spacing : 25 mm horizontal and 40 mm vertical from the centre of the mounting holes. Panel thickness : 1 mm to 3 mm. BS EN 2794-001:2014EN 2794-001:2014 (E) 8 7 Tests

39、 7.1 Mechanical tests See Table 2. Table 2 Mechanical characteristics Tests Requirements Visual check EN 3841201 Operational force Closing force (push) EN 3841502 8 N to 80 N Opening force (pull) 5 N to 45 N Mechanical strength Actuator Travel EN 3841501 For value, see product standard. Transverse l

40、oad EN 3841503 110 N Longitudinal load Push 110 N Pull 110 N Attachment nut Tightening torque EN 3841504 5,5 N.m Rotation torque 3 N.m Main contact connection Screw tightening torque EN 3841505 2,5 N.m Tensile force as per F1(see Figure 1 in product standard). 110 N Pressure force as per F2(see Figu

41、re 1 in product standard). 55 N BS EN 2794-001:2014EN 2794-001:2014 (E) 9 7.2 Environmental tests See Table 3. Table 3 Environmental conditions Tests Requirements Combined tests Ambient temperature 70 C and vibrations (see notes). Sinusoidal (see Figure 1). Duration: circuit breaker in the “closed”

42、position; 0,9 nload Seven cycles/axis 1 octave/min; no load Two cycles/axis 1 octave/min. circuit breaker in the “opened” position; two cycles/axis 1 octave/min. See EN 3841506. 5 Hz to 80 Hz Constant amplitude 2 a = 0,76 mm 80 Hz to 500 Hz Constant acceleration = 10 gn500 Hz to 2 000 Hz Constant ac

43、celeration = 5 gnRandom (see Figure 2). Duration: circuit breaker in the “closed” position; 0,9 nload 15 min/axis; no load 15 min/axis. circuit breaker in the “opened” position; 15 min/axis. 10 Hz to 2 000 Hz Constant acceleration = 5,8 gnLow frequencies (see Figure 3). Applicability: see product st

44、andard. Duration: circuit breaker in the “closed” position; 0,9 nload Two cycles/axis; no load Two cycles/axis. circuit breaker in the “opened” position; 10 Hz to 27 Hz to 10 Hz Constant acceleration = 10 gn10 Hz to 5 Hz Constant acceleration = 3,5 gnCombined tests. Ambient temperature 85 C, cabin m

45、ax. Sinusoidal Applicability: see product standard. Duration: circuit breaker in the “closed” position; See EN 3841511. 5 Hz to 54 Hz Constant shift 2 a = 0,5 mm BS EN 2794-001:2014EN 2794-001:2014 (E) 10 altitude 4 600 m and vibrations (see notes). 0,9 nload Four cycles/axis 1 octave/min; no load T

46、wo cycles/axis 1 octave/min. circuit breaker in the “opened” position; 54 Hz to 2 000 Hz Constant acceleration = 3 gnMechanical shocks (see notes) 50 gn11 ms Half sine wave. See EN 3841507. Constant accelerations See product standard. Sand and dust See product standard. Corrosion (salt spray) See EN

47、 3841402, category S. Humidity See EN 3841403, category A. Explosion-proofing See product standard. Contaminating liquids Cleaning and extinguishing products. See EN 3841405. Flammability (glow wire test) See EN 3841406. Inflammability See test EN 38441, code B. Smoke density See test EN 2825, code

48、A or code B. Toxicity See test EN 2826, code B. Overvoltage caused by lightning only on main contacts See EN 3841308. Requirement: no tripping. NOTE 1 Vibration tests performed on circuit breakers in closed position without load and in opened position, are carried out in order to detect contact open

49、ing and closure. NOTE 2 For vibration and shock tests, the contact-opening or contact-closure shall be less than or equal to 10 s on the power and the signal contacts. NOTE 3 Shock tests are performed one on each way for each of the three directions (i.e. six shocks in all). NOTE 4 Circuit breaker in the closed position = main contacts closed. Circuit breaker in the opened position = main contacts opened. NOTE 5 Any additional vib