1、BRITISH STANDARDBS EN 2995-004:2006Aerospace series Circuit breakers, single-pole, temperature compensated, rated current 1 A to 25 A Part 004: With signal contact Product standardThe European Standard EN 2995-004:2006 has the status of a British StandardICS 49.060g49g50g3g38g50g51g60g44g49g42g3g58g
2、44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58BS EN 2995-004:2006This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 January
3、 2007 BSI 2007ISBN 978 0 580 50010 7National forewordThis British Standard was published by BSI. It is the UK implementation of EN 2995-004:2006.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
5、British Standard cannot confer immunity from legal obligations. Amendments issued since publicationAmd. No. Date CommentsEUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN 2995-004August 2006ICS 49.060English VersionAerospace series - Circuit breakers, single-pole, temperaturecompensated, rated curre
6、nt 1 A to 25 A - Part 004: With signalcontact - Product standardSrie arospatiale - Disjoncteurs unipolaires compenss entemprature, intensits nominales 1 A 25 A - Partie 004 :Avec contact de signalisation - Norme de produitLuft- und Raumfahrt - Schutzschalter, einpolig,Temperaturkompensiert, Nennstrm
7、e 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 a
8、ny 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
9、translationunder 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,
10、Hungary, 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 2995-004:2006: E2 Contents Page Foreword3 1 Scope 4 2 Normative references 4 3 Dimensions and mass.4 4 Characteristics.6 5 Designation 10 6 Ra
12、ted current code 11 7 Delivery codes .11 8 Marking .11 9 Technical specification .11 EN 2995-004:20063 Foreword This European Standard (EN 2995-004:2006) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN). After enquiries and votes carried ou
13、t 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 publ
14、ication 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 CENEL
15、EC 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 2995-004:20064 1 Scope This standard specifies the characteristics of
17、single-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 and at an altitude of 22 000 m max. These circuit breakers are operated by a push-pull type single push button (actuator), with dela
18、yed 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 for the application of this document. For date
19、d references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 2995-001, Aerospace series Circuit breakers, single-pole, temperature compensated, rated current 1 A to 25 A Part 001: Technical specification. E
20、N 3155-016, Aerospace series Electrical contacts used in elements of connection Part 016: Contacts, electrical, male, type A, crimp, class S Product standard.EN 6113, Aerospace series Circuit breaker, connecting and attachment hardware.1)TR 6083, Aerospace series Cut-outs for installation of electri
21、cal 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 and removal tools, connector electrical contact, type III, class 2, composition B. 3)FED-STD-595B, Colors used in Government Procurement. 3 Di
22、mensions and mass 3.1 Dimensional characteristics The circuit breakers do not have to correspond to the pictorial illustration, only the dimensions given shall be adhered to. Dimensions are in millimetres. See Figure 1. 1) Published as AECMA Prestandard at the date of publication of this standard. 2
23、) 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. 20301 USA. EN 2995-004:20065 Key 1 Push button released 9 2 Green colour according to FED-STD-595B No. 34090 Gauge 20 connection pins accordi
24、ng to EN3155-016M2018 3 White 10 Indicative value 25 (see Note) 4 Marking area, see Clause 8. 11 Marking, see Clause 6. 5 Push button pressed 12 6 Attachment nut Positioning lug in accordance with the panel cut-out, as per TR6083C202 7 Lockwasher 13 Rated current marking (white on green) 8 1,0 to 3,
25、0 max. 14 Terminals shape free F1 and F2: see EN 2995-001, Table 3. NOTE Tools noted in subclause 4.2.4 shall be applied without interfering with the terminal 2 connection. Even if the circuit breakers are grouped. Figure 1 Configuration Dimensions Tolerances EN 2995-004:20066 3.2 Electrical diagram
26、 See Figure 2. Terminal No.: 1 and 2: Main contacts 3 and 4: Signal contacts Figure 2 Electrical diagram 3.3 Mass 28 g max. (delivery code A including hardware). 3.4 Panel mounting See EN 2995-001. 4 Characteristics 4.1 Material, surface treatment See EN 2995-001. 4.2 Mechanical characteristics 4.2.
27、1 Fasteners See EN 6113. 4.2.2 Recommended tightening torque of attaching nut for installation (4,75 0,25) Nm 4.2.3 Recommended tightening torque of connection hardware for installation (1,6 0,1) Nm 4.2.4 Recommended tools for contacts of auxiliary contact insertion and extraction plastic MIL-I-8196
28、9/14-11; metallic MIL-I-81969/1-02. 34213421Push-button released Push-button pressedEN 2995-004:20067 4.2.5 Resistance to vibrations 4.2.5.1 Combined test: ambient temperature at 70 C and vibrations Sinusoidal: 10 gn, see EN 2995-001. Random: 5,8 gn, see EN 2995-001. Low frequencies: 10 gn, see EN 2
29、995-001. 4.2.5.2 Combined test: ambient temperature at 85 C, altitude and vibrations Sinusoidal: 3 gn, see EN 2995-001. 4.2.6 Resistance to shocks 50 gn, see EN 2995-001. 4.2.7 Mechanical endurance See Table 6. 4.3 Environment characteristics 4.3.1 Humidity See EN 2995-001. 4.3.2 Corrosion See EN 29
30、95-001. 4.3.3 Contaminating liquids See EN 2995-001. 4.3.4 Overvoltage caused by lightning See EN 2995-001. 4.4 Electrical characteristics 4.4.1 Nominal voltages of main contacts See Table 1. Table 1 28 V d.c. 26 V a.c., 360 Hz to 800 Hz Nominal voltages 115 V a.c., 360 Hz to 800 Hz EN 2995-004:2006
31、8 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 1,10 0,75 0,70 0,55 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 be
32、en 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 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
33、On ground At 22 000 m On ground 23 5 115 105 140 55 5 115 105 160 70 5 105 100 140 125 5 All 100 80 140 4.4.4 Overload trip See Table 4. Table 4 Overload (in % of n) 200 500 1 000 Ambient temperatures C Ratings A Trip time s 1 to 3 2 to 13 5 to 15 4 to 18 23 5 20 to 25 6 to 20 55 5 40 125 5 All 1,5
34、0,15 to 2,50 0,035 to 0,600 EN 2995-004:20069 4.4.5 Short-circuit values See Table 5. Table 5 Nominal voltage 28 V d.c. 115 V a.c., 360 Hz to 800 Hz 0,8 cos 1 Prospective currents 65 nL/R 1 ms 65 nor 1 000 A r.m.s. (value the most favourable) Test altitudes On the ground and at maximum altitude 22 0
35、00 m (4 000 Pa) Number of operations 1 CO a+ 2 OCO b+ 1 CO + 2 OCO aRemoval of short-circuit. bApplication of a short-circuit. 4.4.6 No-load and load endurance See Table 6. Table 6 Number of operations to be provided No-load Load 5 000 2 500 2 500 2 500 2 500 2 500 Main contacts Applicable Resistive
36、 Low current 100 mA, 28 V d.c.(rating 3 A) Resistiven, 28 V d.c.Resistive n, 28 V d.c. Inductive L/R = 5 ms n, 28 V d.c. Inductive 0,6 cos 0,7n, 115 V a.c. - 360 Hz to 800 HzAll ratings Signal contacts Applicable Resistive 0,5 A, 28 V d.c. Resistive3 mA, 28 V d.c Resistive 3 mA, 5 V d.c Lamp 0,2 A,
37、28 V d.c. Lamp 0,23 A, 5 V a.c. NOTE 1 One operation corresponds to one closing and one opening. NOTE 2 Tolerances 5 % on current, voltage and frequency values. EN 2995-004:200610 4.4.7 Dielectric rigidity See Table 7. Table 7 Closed position Z = 0 m Z = 22 000 m 1 and 2 with attachment 1 and 2 with
38、 3 1 and 2 with 4 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 1 and 2 with attachment 3 and 4 with 1 3 and 4 with 2 1 500 V 400 V 3 and 4 with attachment 500 V 150 V 4.4.8 Insulation resistance According to EN 2995-001, Table 5. 5 Designatio
39、n EXAMPLE Description block CIRCUIT BREAKER Identity block EN2995-004A20AA 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. EN 2995
40、-004:200611 6 Rated current code See Table 8. Table 8 Rating 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
41、 conditions Delivery code Kit part-No. aIncluded parts Pieces per part Fitted Supplied separately Connecting screw 2 Connecting lock washer 2 Attachment nut 1 A EN6113A1 Attachment lock washer 1 X Attachment nut 1 B EN6113B1 Attachment lock washer 1 X aSpare parts could be ordered separately, for in
42、formation see EN 6113. 8 Marking As defined 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
43、 diagram (for auxiliary contact) and the 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 t
44、he circuit breaker and/or terminal identification numbers see Figure 1. 9 Technical specification See EN 2995-001. EN 2995-004:2006BS EN 2995-004:2006BSI389 Chiswick High RoadLondonW4 4ALBSI British Standards InstitutionBSI is the independent national body responsible for preparing British Standards
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