ASD-STAN PREN 3773-004-2012 Aerospace series Circuit breakers single-pole temperature compensated rated currents 1 A to 25 A Part 004 UNC thread terminals Product standard (Edition.pdf

1、ASD-STAN STANDARD NORME ASD-STAN ASD-STAN NORM prEN 3773-004 Edition P 2 June 2012 PUBLISHED BY THE AEROSPACE AND DEFENCE INDUSTRIES ASSOCIATION OF EUROPE - STANDARDIZATIONAvenue de Tervuren, 270 - B-1150 Brussels - Tel. 32 2 775 8126 - Fax. 32 2 775 8131 - www.asd-stan.orgICS: 49.060 Supersedes edi

2、tion P 1 of June 1994 and will supersede EN 3773-004:1999Descriptors: ENGLISH VERSION Aerospace series Circuit breakers, single-pole, temperature compensated, rated currents 1 A to 25 A Part 004: UNC thread terminals Product standard Srie arospatiale Disjoncteurs unipolaires compenss en temprature,

3、intensits nominales 1 A 25 A Partie 004 : Bornes filetage UNC Norme de produit Luft- und Raumfahrt Schutzschalter, einpolig, temperaturkompensiert, Nennstrme von 1 A bis 25 A Teil 004: UNC-Klemmengewinde Produktnorm This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AS

4、D-STAN (The AeroSpace and Defence Industries Association of Europe - Standardization). It is published for the needs of the European Aerospace Industry. It has been technically approved by the experts of the concerned Domain following member comments. Subsequent to the publication of this Prestandar

5、d, the technical content shall not be changed to an extent that interchangeability is affected, physically or functionally, without re-identification of the standard. After examination and review by users and formal agreement of ASD-STAN, it will be submitted as a draft European Standard (prEN) to C

6、EN (European Committee for Standardization) for formal vote and transformation to full European Standard (EN). The CEN national members have then to implement the EN at national level by giving the EN the status of a national standard and by withdrawing any national standards conflicting with the EN

7、. Edition approved for publication 30 June 2012 Comments should be sent within six months after the date of publication to ASD-STAN Electrical Domain Copyright 2012 by ASD-STAN prEN 3773-004:2012 (E) 2 Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Terms and definitions .3 4 Dimension

8、s and mass .3 5 Characteristics .5 6 Designation 10 7 Rated current code 10 8 Delivery hardware codes 10 9 Marking .11 10 Technical specification .11 Foreword This standard was reviewed by the Domain Technical Coordinator of ASD-STANs Electrical Domain. After inquiries and votes carried out in accor

9、dance with the rules of ASD-STAN defined in ASD-STANs General Process Manual, this standard has received approval for Publication. prEN 3773-004:2012 (E) 3 1 Scope This standard specifies the characteristics of single-pole circuit breakers, temperature compensated with a rated current from 1 A to 25

10、 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 delayed action “trip-free“ tripping. They will continue to function up to the short-circuit c

11、urrent. 2 Normative references The following referenced documents are indispensable 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 2350, Aerospace

12、 series Circuit breakers Technical specification EN 2282, Aerospace series Characteristics of aircraft electrical supplies EN 3773-001, Aerospace series Circuit breakers, single-pole, temperature compensated, rated currents 1 A to 25 A Part 001: Technical specification EN 6113, Aerospace series Circ

13、uit breaker, connecting and attachment hardware 1)TR 6083, Aerospace series Cut-outs for installation of electrical components 2)FED-STD-595B, Colors used in Government Procurement 3)3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 2350 apply. 4 Dimens

14、ions 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. Dimensions are in millimetres with exception terminal thread 8-32 UNC. 1) Published as ASD-STAN Prestandard at the

15、date of publication of this standard (www.asd-stan.org). 2) Published as ASD-STAN Technical Report at the date of publication of this standard (www.asd-stan.org). 3) Published by: DoD National (US) Mil. Department of Defense http:/www.defenselink.mil/. prEN 3773-004:2012 (E) 4 Key 1 Push button rele

16、ased 2 Black colour according to FED-STD-595B 3 White 4 Marking, see Clause 6. 5 Push button pressed 6 Attachment nut 7 Lock washer 8 1,0 max. to 3,0 max. 10 Positioning lug in accordance with the panel cut-out, as per TR 6083C202 11 Rated current marking (white on black) Figure 1 Circuit breaker pr

17、EN 3773-004:2012 (E) 5 4.2 Electrical diagram See Figure 2. Push button released: CB open. Push button pressed: CB closed. Key 1 Supply 2 Load Load and supply can be inverted. Figure 2 Electrical diagram 4.3 Mass 26 g max. (delivery hardware code A). 4.4 Panel mounting See EN 3773-001. 5 Characteris

18、tics 5.1 Material, surface treatment See EN 3773-001. 5.2 Mechanical characteristics 5.2.1 Fasteners See EN 6113. 5.2.2 Recommended tightening torque of attaching nut for installation (4,75 0,25) N.m prEN 3773-004:2012 (E) 6 5.2.3 Recommended tightening torque of connection hardware for installation

19、 (1,6 0,1) N.m 5.2.4 Resistance to vibrations 5.2.4.1 Combined test: ambient temperature at 70 C and vibrations Sinusoidal : 10 gn, see EN 3773-001. Random: 5,8 gn,see EN 3773-001. Low frequencies : 10 gn, see EN 3773-001. 5.2.4.2 Combined test: ambient temperature at 85 C, altitude and vibrations S

20、inusoidal : 3 gn, see EN 3773-001. 5.2.5 Resistance to shocks 50 gn, see EN 3773-001. 5.2.6 Mechanical endurance See Table 6. 5.3 Environment characteristics 5.3.1 Humidity See EN 3773-001. 5.3.2 Corrosion See EN 3773-001. 5.3.3 Contaminating liquids See EN 3773-001. 5.3.4 Overvoltage caused by ligh

21、tning See EN 3773-001. prEN 3773-004:2012 (E) 7 5.4 Electrical characteristics 5.4.1 Nominal voltage of operational circuits See Table 1. Table 1 Nominal voltage 28 V d.c. 26 V a.c., frequency 400 Hz, single-phase 115 V a.c., frequency 400 Hz, single-phase When using on a variable frequency aircraft

22、 power supply, according to EN 2282, limit values (for voltage and frequency) shall be specified. 5.4.2 Voltage drop at in and 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

23、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 thresholds See Table 3. Table 3 Overload (in % of n) Ambient temperatures Ratings Minimum thresholds value 1 h Maximum thresholds value 1 h C A On ground At 22 000 m On gro

24、und 23 5 All 115 105 140 55 5 115 105 160 70 5 105 100 140 125 5 100 80 140prEN 3773-004:2012 (E) 8 5.4.4 Overload trip See Table 4. Table 4 Overload (in % of n) 200 500 1 000 Ambient temperatures C Ratings A Trip time s 23 5 1 to 3 2 to 13 0,15 to 2,50 0,035 to 0,600 5 to 15 4 to 18 20 to 25 6 to 2

25、0 55 5 All 40 125 5 1,5 5.4.5 Short-circuit values See Table 5. Table 5 Nominal voltage 28 V d.c. 115 V a.c., 400 Hz Prospective currents 65 nL/R 1 ms 0,8 cos 1 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 operat

26、ions 1 CO a 2 OCO b 1 CO 2 OCO aRemoval of short-circuit. bApplication of a short-circuit.prEN 3773-004:2012 (E) 9 5.4.6 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 All ratings Main contacts Applicable Resistive Low c

27、urrent 100 mA, 28 V d.c.(rating 3 A) Resistive n, 28 V d.c. Inductive L/R 5 ms n, 28 V d.c. Inductive 0,6 cos 0,7 n, 115 V a.c. - 400 HzNOTE 1 One operation corresponds to one closing and one opening. NOTE 2 Tolerances 5 % on current, voltage and frequency values. 5.4.7 Dielectric rigidity See Table

28、 7. Table 7 Closed position Z 0 m Z 22 000 m 1 and 2 with attachment 1 500 V 400 V Open position Z 0 m Z 22 000 m 1 with 2 1 and 2 with attachment 1 500 V 400 V 5.4.8 Insulation resistance 100 M (measurement points identical to dielectric rigidity points). 5.4.9 Overload endurance Not applicable. pr

29、EN 3773-004:2012 (E) 10 6 Designation EXAMPLE Description block CIRCUIT BREAKER Identity block EN3773-004D20AA Number of this standard Design code, D: black button Rated current code (see Table 8) Delivery hardware code A (see Table 9) NOTE If necessary, the code I9005 shall be placed between the de

30、scription block and the identity block. 7 Rated current code See Table 8. Table 8 Ratings n1 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 8 Delivery hardware codes See Table 9. Table 9 Delivery hardware code Connecti

31、on and attachment hardware kits EN 6113 Delivery conditions Kit part-No. aIncluded parts Pieces per part Fitted Supplied separately 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

32、 could be ordered separately, informations see EN 6113.prEN 3773-004:2012 (E) 11 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 manufacture date (year, week): YYWW; the manufacturers name or trademark; the pin terminal identification; the manufacturers part number. NOTE The marking could be combined on the both opposite faces. For electrical diagram and/or terminal identification refer to the Figure 1. 10 Technical specification See EN 3773-001.