1、BRITISH STANDARDBS EN 2996-004:2006Aerospace series Circuit breakers, three-pole, temperature compensated, rated current 1 A to 25 A Part 004: With signal contact Product standardThe European Standard EN 2996-004:2006 has the status of a British StandardICS 49.060g49g50g3g38g50g51g60g44g49g42g3g58g4
2、4g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 2996-004:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January
3、2007 BSI 2007ISBN 978 0 580 50013 8National forewordThis British Standard was published by BSI. It is the UK implementation of EN 2996-004:2006.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、-/5, Aerospace Protection for electrical systems.A list of organizations represented on ACE/6/-/5 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 B
5、ritish Standard cannot confer immunity from legal obligations.Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 2996-004August 2006ICS 49.060English VersionAerospace series - Circuit breakers, three-pole, temperaturecompensated, rated current
6、1 A to 25 A - Part 004: With signalcontact - Product standardSrie arospatiale - Disjoncteurs tripolaires compenss entemprature, intensits nominales 1 A 25 A - Partie 004 :Avec contact de signalisation - Norme de produitLuft- und Raumfahrt - Schutzschalter, dreipolig,Temperaturkompensiert, Nennstrme
7、von 1 A bis 25 A -Teil 004: Mit Signalkontakt - ProduktnormThis European Standard was approved by CEN on 5 June 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
8、 alteration. Up-to-date lists and bibliographical references concerning such nationalstandards 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 tr
9、anslationunder the responsibility of a CEN member into its own language and notified to the Central Secretariat 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, Hu
10、ngary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMIT EUROPEN DE NORMALISATIONEUROPISCHES KOMITEE FR NORMUNGManagement Centre:
11、rue de Stassart, 36 B-1050 Brussels 2006 CEN All rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 2996-004:2006: E2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Dimensions and mass.4 4 Characteristics.6 5 Designation 11 6 Rate
12、d current code 11 7 Delivery codes .11 8 Marking .12 9 Technical specification .12 EN 2996-004:20063 Foreword This European Standard (EN 2996-004:2006) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN). After enquiries and votes carried out
13、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 public
14、ation of an identical text or by endorsement, at the latest by February 2007, and conflicting national standards shall be withdrawn at the latest by February 2007. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC
15、 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 the following countries are bound to implement this European Standard: Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia,
16、Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. EN 2996-004:20064 1 Scope This standard specifies the characteristics of th
17、ree-pole circuit breakers, temperature compensated with a rated current from 1 A to 25 A, used in aircraft on-board circuits at a temperature between 55 C and 125 C for ratings 15 A and 55 C to 90 C for ratings 15 A and at an altitude of 22 000 m max. These circuit breakers are operated by a push-pu
18、ll type single pushbutton (actuator), with delayed action “trip-free“ tripping with a signal contact which is open when main contacts are closed, and inversely. They will continue to function up to the short-circuit current. 2 Normative references The following referenced documents are indispensable
19、 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 2996-001, Aerospace series Circuit breakers, three-pole, temperature compensated, rated current 1
20、A to 25 A Part 001: Technical specification. 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 3841-305, Aerospace series Circuit breakers Test methods Part 305: Short-circuit performance
21、. EN 6113, Aerospace series Circuit breaker, connecting and attachment hardware.1)TR 6083, Aerospace series Cut-outs for installation of electrical components.2)MIL-I-81969/1A, Installing and removal tools, connector electrical contact, type III, class 2, composition C.3)MIL-I-81969/14C, Installing
22、and removal tools, connector electrical contact, type III, class 2, composition B.3)FED-STD-595B, Colors used in Government Procurement. 3 Dimensions and mass 3.1 Dimensional characteristics The circuit breakers do not have to correspond to the pictorial illustration, only the dimensions given shall
23、 be adhered to. Dimensions are in millimetres. See Figure 1. 1) Published as AECMA Prestandard at the date of publication of this standard. 2) Published as AECMA Technical Report at the date of publication of this standard. 3) Published by: Department of Defense (DOD), the Pentagon, Washington D.C.
24、20301 USA. EN 2996-004:20065 Key 1 Push button released 10 1 to 3 max. 2 Green colour according to FED-STD-595B No. 34090 11 3 White Gauge 20 connection pins according to EN3155-016M2018 4 Marking area, see Clause 8. 12 Indicative value 25 (see note) 5 Circuits deviding partition 13 Rated current ma
25、rking (white on green) 6 Connecting screw and washer 14 7 Push button pressed Positioning lug in accordance with the panel cut-out, as per TR6083C202 8 Lockwasher 15 Terminals shape free 9 Attachment nut F1 and F2: see EN 2996-001 “Mechanical tests“. NOTE Tools noted in subclause 4.2.4 shall be appl
26、ied without interfering with the terminal 2 connection. Even if the circuit breakers are grouped. Figure 1 Configuration Dimensions Tolerances 341,50-0,5234,6 min.50,5 A12439 8,4 0,3C2B2A2C1B1A115,8max.0,5A16,5 max.12,8 0,517,5215 0,8 15 0,80,5 AF2F11530 max.26,5 max.20 max.138 min.10130,5M12 x 13 m
27、in.6,350,42,5 0,318,51310,819,5max.3max.6453453A7 min.5 0,536247max.F1 and F2 : see EN 2996-001 table 3A2 B2 C2814 10,2 0,317119,8 max.EN 2996-004:20066 3.2 Electrical diagram See Figure 2. Terminal No.: 1 and 2: Main contacts 3 and 4: Signal contacts Figure 2 Electrical diagram 3.3 Mass 64 g max. (
28、delivery code A including hardware). 3.4 Panel mounting See EN 2996-001. 4 Characteristics 4.1 Material, surface treatment See EN 2996-001. 4.2 Mechanical characteristics 4.2.1 Fasteners See EN 6113. 4.2.2 Recommended tightening torque of attaching nut for installation (4,75 0,25) Nm 4.2.3 Recommend
29、ed tightening torque of connection hardware for installation (1,6 0,1) Nm A2 A1B2 B1C2 C134Push-button releasedA2 A1B2 B1C2 C134Push-button pressedEN 2996-004:20067 4.2.4 Recommended tools for contacts of auxiliary contact insertion and extraction plastic MIL-I-81969/14-11; metallic MIL-I-81969/1-02
30、. 4.2.5 Resistance to vibrations 4.2.5.1 Combined test: ambient temperature at 70 C and vibrations Sinusoidal: 10 gn, see EN 2996-001. Random: 5,8 gn, see EN 2996-001. Low frequencies: 10 gn, see EN 2996-001. 4.2.5.2 Combined test: ambient temperature at 85 C, altitude and vibrations Sinusoidal: 3 g
31、n, see EN 2996-001. 4.2.6 Resistance to shocks 50 gn, see EN 2996-001. 4.2.7 Mechanical endurance See Table 6. 4.3 Environment characteristics 4.3.1 Humidity See EN 2996-001. 4.3.2 Corrosion See EN 2996-001. 4.3.3 Contaminating liquids See EN 2996-001. 4.3.4 Overvoltage caused by lightning See EN 29
32、96-001. 4.4 Electrical characteristics 4.4.1 Nominal voltages of main contacts See Table 1. Table 1 Nominal voltage 115/200 V a.c., 360 Hz to 800 Hz EN 2996-004:20068 4.4.2 Voltage drop at nand at low current See Table 2. Table 2 Ratings A 1 2 2,5 3 5 7,5 10 15 20 25 U max. at n V 1,1 0,75 0,70 0,55
33、 0,35 0,30 0,30 0,25 0,25 0,20 U max. at = 100mA mV 110 40 30 18 8 4 3 2,5 2,5 2,5 Signal circuit: 28 V d.c.; I = 3 mA : U 0,3 mV. NOTE When a signal contact has been operated with a power greater than 60 mW and/or with a voltage higher than 28 V d.c., it loses its low current quality. 4.4.3 Minimum
34、 and maximum tripping thresholds See Table 3. Table 3 Overload (in % of n) Minimum thresholds value 1 h Maximum thresholds value 1 h Ambient temperatures C Ratings On ground At 22 000 m On ground 23 5 110 105 140 55 5 115 105 160 70 5 All 105 100 140 90 5 20 and 25 90 80 140 125 5 1 to 15 100 80 140
35、 NOTE 1 For detection of minimum threshold, all the poles are connected in series. NOTE 2 For detection of maximum threshold, load value is: - increased by about 20 % when one pole is submitted to the load and other poles are not loaded; - increased by about 10 % when two poles are submitted to the
36、load and the other one is not loaded; - not increased when the two other poles are loaded at 0,9 n. EN 2996-004:20069 4.4.4 Overload trip See Table 4. Table 4 Overload (in % of n) 200 500 1 000 3 poles 1 pole 3 poles 1 pole 3 poles 1 pole Ambient temperatures C Ratings A Trip time s 23 5 2 to 20 55
37、5 All 40 48 90 5 20 and 25 1,5 1,5 125 5 1 to 15 1,5 1,5 0,15 to 2,30 0,15 to 2,80 0,035 to 0,500 0,035 to 0,600 NOTE 1 When 3 poles are loaded, they will be connected in series. NOTE 2 When 1 pole is loaded, the two other poles are not loaded. 4.4.5 Short-circuit values See Table 5. Table 5 Nominal
38、 voltage 115 / 200 V a.c., 360 Hz to 800 Hz 0,8 cos 1 Prospective currents 65 nor 1 000 A r.m.s. (value the most favourable) Test altitudes On the ground and at maximum altitude 22 000 m (4 000 Pa) Number of operations 1 CO a+ 2 OCO b+ 1 CO + 2 OCO aBreak operation (for definition refer to EN 3841-3
39、05). bMake operation (for definition refer to EN 3841-305). 4.4.6 No-load and load endurance See Table 6. EN 2996-004:200610 Table 6 Number of operations to be provided No-load Load 5 000 2 500 Main contacts Applicable Inductive 0,6 cos 0,7 n, 115 / 200 V a.c. - 360 Hz to 800 Hz All ratings Signal c
40、ontacts Applicable Resistive 0,5 A, 28 V d.c. Resistive 3 mA, 28 V d.cResistive 3 mA, 5 V d.cLamp 0,2 A, 28 V d.c. Lamp 0,23 A, 5 V a.c.NOTE 1 One operation corresponds to one closing + one opening. NOTE 2 Tolerances 5 % on current, voltage and frequency values. 4.4.7 Dielectric rigidity See Table 7
41、. Table 7 Closed position Z = 0 m Z = 22 000 m A1, B1, C1 with attachment A1, B1, C1 with 3 A1, B1, C1 with 4 A1, A2 with B1, B2 and C1, C2 B1, B2 with A1, A2 and C1, C2 1 500 V 400 V 3 with 4 3 and 4 with attachment 500 V 150 V Open position Z = 0 m Z = 22 000 m 1 with 2 A1, B1, C1, A2, B2, C2 with
42、 attachment 3 and 4 with A1, B1, C1 3 and 4 with A2, B2, C2 A1, A2 with B1, B2 and C1, C2 B1, B2 with A1, A2 and C1, C2 1 500 V 400 V 3 and 4 with attachment 500 V 150 V 4.4.8 Insulation resistance According to EN 2996-001, Table 5. EN 2996-004:200611 5 Designation EXAMPLE Description block CIRCUIT
43、BREAKER Identity block EN2996-004A20AA Number of EN standard Design code, A: green button Rated current code (see Table 8) Delivery code A (see Table 9) NOTE If necessary, the code I9005 shall be placed between the description block and the identity block. 6 Rated current code See Table 8. Table 8 R
44、ating current n (A) 1 2 2,5 3 5 7,5 10 15 20 25 Marking on actuator 1 2 2 3 5 7 10 15 20 25 Rated current code 01A 02A 2A5 03A 05A 7A5 10A 15A 20A 25A 7 Delivery codes See Table 9. Table 9 Connection and attachment hardware kits EN 6113 Delivery conditions Delivery code Kit part-No. aIncluded parts
45、Pieces per part Fitted Supplied separately Connecting screw 6 Connecting lockwasher 6 Attachment nut 1 A EN6113C1 Attachment lockwasher 1 X Attachment nut 1 B EN6113B1 Attachment lockwasher 1 X aSpare parts could be ordered separately, for information see EN 6113. EN 2996-004:200612 8 Marking As def
46、ined on the drawing and unless otherwise specified by contract, marking shall include: the designation defined in Clause 5 (without delivery hardware code), on the packaging; the manufacture date (year, week); the manufacturers name or trademark; the electrical diagram (for auxiliary contact) and th
47、e pin terminal identification; the manufacturers part number (corresponding to the part number which includes connection and attachment hardware supplied separately in a bag). NOTE The marking could be on both opposite sides. For electrical diagram printed on the circuit breaker and/or terminal iden
48、tification numbers see Figure 1. 9 Technical specification See EN 2996-001. EN 2996-004:2006blankBS EN 2996-004:2006BSI389 Chiswick High RoadLondonW4 4ALBSI British Standards InstitutionBSI is the independent national body responsible for preparing British Standards. It presents the UK view on stand
49、ards in Europe and at the international level. It is incorporated by Royal Charter.RevisionsBritish Standards are updated by amendment or revision. Users of British Standards should make sure that they possess the latest amendments or editions.It is the constant aim of BSI to improve the quality of our products and services. We would be grateful if anyone finding an inaccuracy or ambiguity while using this Br
