1、BSI Standards PublicationWB11885_BSI_StandardCovs_2013_AW.indd 1 15/05/2013 15:06Aerospace series - Arc fault circuit breakers, single-pole, temperature compensated, rated current 3 A to 25 A - 115 V a.c. 400 Hz constant frequencyPart 004: With signal contact - Product standardBS EN 4838-004:2018EUR
2、OPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 4838-004 July 2018 ICS 49.060 English Version Aerospace series - Arc fault circuit breakers, single-pole, temperature compensated, rated current 3 A to 25 A - 115 V a.c. 400 Hz constant frequency - Part 004: With signal contact - Product standard Sri
3、e arospatiale - Disjoncteurs unipolaires dtection darc compenss en temprature, intensits nominales 3 A 25 A - 115 V c.a. 400 Hz frquence fixe - Partie 004 : Avec contact de signalisation - Norme de produit Luft- und Raumfahrt - Strlichtbogen-Schutzschalter, einpolig, temperaturkompensiert, Nennstrme
4、 von 3 A bis 25 A - 115 V Wechselstrom, 400 Hz Konstantfrequenz - Teil 004: Mit Signalkontak - Produktnorm This European Standard was approved by CEN on 6 November 2017. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European
5、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 Standard exists in three official versions (En
6、glish, 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
7、, 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, Serbia, Slovakia, Slovenia, Spain, Sweden, S
8、witzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels 2018 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN
9、 national Members. Ref. No. EN 4838-004:2018 ENational forewordThis British Standard is the UK implementation of EN 4838004:2018.The UK participation in its preparation was entrusted to Technical Committee ACE/6, Aerospace avionic electrical and fibre optic technology.A list of organizations represe
10、nted on this committee 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. The British Standards Institution 2018 Published by BSI Standards Limited 2018ISBN 978 0 580
11、99399 2ICS 49.060Compliance with a British Standard cannot confer immunity from legal obligations. This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 July 2018.Amendments/corrigenda issued since publicationDate Text affectedBRITISH STANDARDBS
12、 EN 4838004:2018EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 4838-004 July 2018 ICS 49.060 English Version Aerospace series - Arc fault circuit breakers, single-pole, temperature compensated, rated current 3 A to 25 A - 115 V a.c. 400 Hz constant frequency - Part 004: With signal contact - P
13、roduct standard Srie arospatiale - Disjoncteurs unipolaires dtection darc compenss en temprature, intensits nominales 3 A 25 A - 115 V c.a. 400 Hz frquence fixe - Partie 004 : Avec contact de signalisation - Norme de produit Luft- und Raumfahrt - Strlichtbogen-Schutzschalter, einpolig, temperaturkom
14、pensiert, Nennstrme von 3 A bis 25 A - 115 V Wechselstrom, 400 Hz Konstantfrequenz - Teil 004: Mit Signalkontak - Produktnorm This European Standard was approved by CEN on 6 November 2017. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for gi
15、ving 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 Standard exists in three of
16、ficial 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
17、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, Serbia, Slovakia, Sloveni
18、a, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels 2018 CEN All rights of exploitation in any form and by any means reserve
19、d worldwide for CEN national Members. Ref. No. EN 4838-004:2018 EBS EN 4838004:2018EN 4838-004:2018 (E) 2 Contents Page European foreword . 3 1 Scope 4 2 Normative references 4 3 Terms and definitions . 4 4 Dimension and mass 4 5 Characteristics . 7 6 Designation. 11 7 Rated current code 11 8 Delive
20、ry hardware codes 11 9 Marking 12 10 Technical specification . 12 BS EN 4838004:2018EN 4838-004:2018 (E) 3 European foreword This document (EN 4838-004:2018) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN). After enquiries and votes carrie
21、d 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 standard, either by
22、publication of an identical text or by endorsement, at the latest by January 2019, and conflicting national standards shall be withdrawn at the latest by January 2019. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not
23、be held responsible for identifying any or all such patent rights. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, E
24、stonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. BS EN 483800
25、4:2018EN 4838-004:2018 (E) 4 1 Scope This European Standard specifies the required characteristics for single-pole, arc fault circuit breakers rated currents from 3 A to 25 A, switching capacity 65 In, for use in aircraft electrical systems. Their operating temperatures are between 40 C to 85 C at a
26、 maximum altitude of Z = 15 000 m. The thermal protection is temperature compensated and operates between 55 C and 125 C. These arc fault circuit breakers are operated by a push-pull type single pushbutton (actuator), with delayed action “trip-free” tripping. They will continue to function up to the
27、 short-circuit current. 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 refere
28、nced document (including any amendments) applies. EN 3155-016, Aerospace series Electrical contacts used in elements of connection Part 016: Contacts, electrical, male, type A, crimp, class S Product standard EN 3841-100, Aerospace series Circuit breakers Test methods Part 100: General EN 4838-001,
29、Aerospace series Arc Fault Circuit breakers, single-pole, temperature compensated, rated current 3 A to 25 A 115 V a.c. 400 Hz Constant Frequency Part 001: Technical specification 1)EN 6113, Aerospace series Circuit breaker, connecting and attachment hardware MIL-I-81969/1-02, Installing and removal
30、 tools, connector electrical contact, Type III, Class 2, composition C 2)MIL-I-81969/14-11, Installing and removal tools, connector electrical contact, Type III, Class 2, composition B 2)FED-STD-595B, Colours used in Government Procurement TR 6083, Aerospace series Cut-outs for installation of elect
31、rical components 3)3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 3841-100 apply. ISO and IEC maintain terminological databases for use in standardization at the following addresses: IEC Electropedia: available at http:/www.electropedia.org/ ISO Onli
32、ne browsing platform: available at http:/www.iso.org/obp 1) At draft stage. 2) Published by: DoD National (US) Mil. Department of Defense http:/www.defenselink.mil/ 3) Published as ASD-STAN Technical Report at the date of publication of this European Standard by Aerospace and Defense industries Asso
33、ciation of European-Standardization (ASD-STAN) (www.asd-stan.org) BS EN 4838004:2018EN 4838-004:2018 (E) 5 4 Dimension and mass 4.1 Dimensional characteristics The circuit breakers do not have to correspond to the pictorial illustration, only the dimensions given shall be adhered to. See Figure 1. D
34、imensions are in millimetres with exception terminal thread 832 UNC. Key 1 Push button released 9 Gauge 20 connection pins according to EN 3155-016M2018 (terminals 3 and 4) 2 Green colour according to FED-STD-595B No. 34090 10 Indicative value 25 (see Note) 3 White 11 Positioning lug in accordance w
35、ith the panel cut-out, as per TR 6083C202. Neutral connection 4 Marking area, see Clause 9 12 Rated current marking (white on green) 5 Push button pressed 13 Terminals shape free 6 Attachment nut 14 LED indicator AlInGap 592 nm Amber colour 0,65 mm diameter 7 Lockwasher 15 Neutral via panel conducti
36、ve metal plate interconnected to terminal 6 8 1,0 to 3,0 max 16 Gauge 20 connection pins according to EN 3155-016M2018 (terminal 6) F1 and F2: see EN 4838-001, Table 3. BS EN 4838004:2018EN 4838-004:2018 (E) 6 NOTE Tools noted in 5.2.4 shall be applied without interfering with the terminal 2 connect
37、ion. Even if the circuit breakers are grouped. Figure 1 Configuration Dimensions Tolerances 4.2 Electrical diagram See Figure 2. Push button released: CB is open, signal contact is closed. Push button pressed: CB is closed, signal contact is open. Terminal No.: 1 and 2: Main contacts 1 = Supply and
38、2 = Load (see Table 1 of EN 4838-001) 3 and 4: Signal contacts 6: Neutral connection via Gauge 20 connection pins according to EN 3155-016M2018 (see Figure 1) Figure 2 Electrical diagram 4.3 Mass Maximum mass : 35 g (including hardware delivery code A). 4.4 Panel mounting Panel cut-out : The panel c
39、ut-out is in accordance with the designation TR 6083C202. Spacing : 20 mm horizontal and 35 mm vertical from the centre of the mounting holes. Panel thickness : 1 mm to 3 mm The metallic front plate of the breaker (mark 15 on Figure 1) is an electrical connection to neutral. For this purpose, the pa
40、nel mounting means must ensure a good electrical continuity to neutral. BS EN 4838004:2018EN 4838-004:2018 (E) 7 In case of panel isolated from neutral a rear wire can be used to connect neutral to terminal 6 (see Figure 1). 5 Characteristics 5.1 Material, surface treatment See EN 4838-001. 5.2 Mech
41、anical characteristics 5.2.1 Fasteners See EN 6113. 5.2.2 Recommended tightening torque of attaching nut for installation (4,0 0,25) Nm. 5.2.3 Recommended tightening torque of connection hardware for installation (1,6 0,1) Nm. 5.2.4 Recommended tools for contacts of auxiliary contact insertion and e
42、xtraction plastic MIL-I-81969/14-11; metallic MIL-I-81969/1-02. 5.2.5 Resistance to vibrations 5.2.5.1 Combined test: ambient temperature at 70 C and vibrations Sinusoidal : 10 g-PK, see EN 4838-001. Random : 5,8 Grms, see EN 4838-001. Low frequencies : 10 g-PK, see EN 4838-001. 5.2.5.2 Combined tes
43、t: ambient temperature at 85 C, altitude and vibrations Sinusoidal : 3 g-PK, see EN 4838-001. 5.2.6 Resistance to shocks 50 g-PK, see EN 4838-001. 5.2.7 Mechanical endurance See Table 6. 5.3 Environment characteristics 5.3.1 Humidity See EN 4838-001. 5.3.2 Corrosion See EN 4838-001. 5.3.3 Contaminat
44、ing liquids See EN 4838-001. BS EN 4838004:2018EN 4838-004:2018 (E) 8 5.3.4 Susceptibility towards electrical perturbations See EN 4838-001. 5.4 Electrical characteristics 5.4.1 Nominal voltage of operational circuits See Table 1. Table 1 Nominal voltage 115 V a.c., 400 Hz constant frequency 5.4.2 V
45、oltage drop at Inand low current See Table 2. Table 2 Ratings A 3 5 7,5 10 15 20 25 U max. at In V 0,55 0,35 0,30 0,30 0,25 0,25 0,20 U max. at I = 100 mA (mV) 18 8 4 2,5 2,5 2,5 2,5 NOTE The test shall be performed when the contact is established (no switching). 5.4.3 Minimum and maximum tripping t
46、hresholds See Table 3. Table 3 Overload (in % of In) Ambient temperatures C Ratings Minimum thresholds value 1 h Maximum thresholds value 100 M. 5.5 Arc fault performance Test according to EN 4838-001. BS EN 4838004:2018EN 4838-004:2018 (E) 11 6 Designation EXAMPLE Description block CIRCUIT BREAKER
47、Identity block EN4838-004-20A-B Number of this standard Rated current code, see Table 9 Delivery hardware code B, see Table 10 NOTE If necessary, the code I9005 shall be placed between the description block and the identity block. 7 Rated current code See Table 9. Table 9 Ratings In 3 5 7,5 10 15 20
48、 25 Marking on actuator 3 5 7 10 15 20 25 Rated current code 03A 05A 7A5 10A 15A 20A 25A 8 Delivery hardware codes See Table 10. Table 10 Delivery hardware code Connection and attachment hardware kits EN 6113 Delivery conditions Kit part-No. aIncluded parts Pieces per part Fitted Supplied separately
49、 A EN 6113A1 Connecting screw 2 X Connecting lock washer 2 Attachment nut 1 Attachment lock washer 1 B EN 6113B1 Attachment nut 1 X Attachment lock washer 1 aSpare parts could be ordered separately; for information, see EN 6113. BS EN 4838004:2018EN 4838-004:2018 (E) 12 9 Marking As defined on the drawing and unless otherwise specified by contract, marking shall include: the designation defined in Clause 6 (without delivery hardware code), on the packaging; the manufa
