ASD-STAN PREN 2665-001-2012 Aerospace series Circuit breakers three-pole temperature compensated rated current 20 A to 50 A Part 001 Technical specification (Edition P 2).pdf

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1、ASD-STAN STANDARD NORME ASD-STAN ASD-STAN NORM prEN 2665-001 Edition P 2 February 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: Supersedes editio

2、n P 1 of June 1994 and will supersede EN 2665-001:1999Descriptors: ENGLISH VERSION Aerospace series Circuit breakers, three-pole, temperature compensated, rated current 20 A to 50 A Part 001: Technical specification Srie arospatiale Disjoncteurs tripolaires compenss en temprature, intensits nominale

3、s 20 A 50 A Partie 001 : Spcification technique Luft- und Raumfahrt Schutzschalter, dreipolig, temperaturkompensiert, Nennstrme von 20 A bis 50 A Teil 001: Technische Lieferbedingungen This “Aerospace Series“ Prestandard has been drawn up under the responsibility of ASD-STAN (The AeroSpace and Defen

4、ce 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 Prestandard, the technical content shall

5、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 CEN (European Committee for Stan

6、dardization) 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. Edition approved for publicat

7、ion 29 February 2012 Comments should be sent within six months after the date of publication to ASD-STAN Electrical Domain Copyright 2012 by ASD-STAN prEN 2665-001:2012 (E) 2 Contents Page Foreword 2 1 Scope 3 2 Normative references 3 3 Terms and definitions .3 4 Description .3 5 Design .4 6 Charact

8、eristic .5 7 Tests 6 8 Qualification tests 14 9 Quality assurance 17 10 Marking .17 11 Delivery conditions 17 12 Packaging .18 13 Storage 18 Foreword This standard was reviewed by the Domain Technical Coordinator of ASD-STANs Electrical Domain. After inquiries and votes carried out in accordance wit

9、h the rules of ASD-STAN defined in ASD-STANs General Process Manual, this standard has received approval for Publication. prEN 2665-001:2012 (E) 3 1 Scope This standard specifies the three-pole temperature compensated circuit breakers without signal contacts, rated from 20 A to 50 A and used in airc

10、raft on-board circuits. It describes specific environmental, electrical and 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. 2 No

11、rmative 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 2083, Aerospace series Copp

12、er or copper alloy conductors for electrical cables Product standard EN 2282, Aerospace series Characteristics of aircraft electrical supplies EN 2665-004, Aerospace series Circuit breakers, three-pole, temperature compensated, rated current 20 A to 50 A Part 004: UNC thread terminals Product standa

13、rd EN 2825, Aerospace series Burning behaviour of non metallic materials under the influence of radiating heat and flames Determination of smoke density EN 2826, Aerospace series Burning behaviour of non metallic materials under the influence of radiating heat and flames Determination of gas compone

14、nts in the smoke EN 3841-100 (all parts), Aerospace series Circuit breakers Test Methods Part 100: GeneralEN 3844-1, Aerospace series Flammability of non metallic materials Part 1: Small burner test, vertical Determination of the vertical flame propagation 1)EN 9133, Aerospace series Quality managem

15、ent systems Qualification procedure for aerospace standards TR 6083, Aerospace series Cut-outs for installation of electrical components 2)3 Terms and definitions For the purposes of this document, the terms and definitions given in EN 3841-100 apply. 4 Description These circuit breakers are operate

16、d by a “push-pull“ type single push button (actuator) and with delayed action “trip-free“ tripping. Their function is assured up to the short-circuit current. 1) Published as ASD-STAN Prestandard at the date of publication of this standard (www.asd-stan.org). 2) Published as ASD-STAN Technical Repor

17、t at the date of publication of this standard (www.asd-stan.org). prEN 2665-001:2012 (E) 4 5 Design 5.1 Materials 5.1.1 Metallic materials All metallic parts shall be resistant to corrosion or finished against corrosion. When dissimilar materials are in close contact, an adequate protection against

18、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 Insulation materials The insulating parts shall be made of auto-extinguishing or non-

19、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 protective coating, which might crack, break on flake shall be forbidden. Materials

20、 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 documents. 5.2 Design 5.2.1 Insulating box The insulating box shall integr

21、ate 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 out even if the actuator is kept by force in engaged position. A new engage

22、ment 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 shall be black colored and non-reflective. 5.2.4 Electrical connection unit

23、s They shall be able to receive the lugs. 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. In disengaged (or opened) position, the control actuator shall show a white strip. The outer part of this actuator sha

24、ll be isolated from all under voltage parts. prEN 2665-001:2012 (E) 5 The control actuator shall not stay in a transition position, or give a false indication about the circuit breaker condition. It shall not be removable. When pushing it, power contacts of the circuit breaker engage. When pulling i

25、t, 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. 5.2.6 Rating inviolability The circuit breaker shall be designed in such a way that the calib

26、ration 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 under voltage parts and any other part of the circuit breaker made of non-insulating material, as well as between the under voltage parts of opposite polar

27、ity, 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 position (sticked contacts or non-operating release mechanism), shall cause the opening of the ci

28、rcuit by circuit breaker destruction without any fire or important smoke release. 6 Characteristic 6.1 General characteristics See Table 1. Table 1 General characteristics Designation Requirements Assembly See product standard. Mass See product standard. Operational altitude See product standard. 3

29、input terminals on power supply side (identified by digit A1, B1, C1) See product standard. 3 output terminals on distribution side (identified by digit A2, B2, C2) Operational ambient temperatures limits From 55 C to 90 C Temperature compensation From 55 C to 90 C See product standard. Rating marki

30、ng On control actuator (indelible white) prEN 2665-001:2012 (E) 6 6.2 Ratings See product standard. 6.3 Nominal voltage of operational circuits See product standard. 6.4 Dimensional characteristics See product standard. 6.5 Recommended panel mounting dimensions Panel cut-out : the panel cut-out is i

31、n accordance with the designation TR6083C202 (for EN 2665-004). Spacing : 60 mm horizontal and 45 mm vertical from the centers of the mounting holes. Panel thickness : 1 mm to 3 mm. 7 Tests 7.1 Mechanical tests See Table 2. Table 2 Mechanical characteristics Tests Requirements Visual check EN 3841-2

32、01 Operational force Closing force (push) EN 3841-502 8 N to 80 N Opening force (pull) 5 N to 45 N Mechanical strength Actuator Travel EN 3841-501 For value, see product standard. Transverse load EN 3841-503 110 N Longitudinal load Push 110 N Pull 110 N Attachment nut Tightening torque EN 3841-504 5

33、,5 N.m Rotation torque 3 N.m Main contact connection Screw tightening torque EN 3841-505 2,5 N.m Tensile force as per F1(see Figure 1 in product standard). 110 N Pressure force as per F2(see Figure 1 in product standard). 55 N prEN 2665-001:2012 (E) 7 7.2 Environmental tests See Table 3. Table 3 Env

34、ironmental conditions Tests Requirements Combined tests. Ambient temperature 70 C and vibrations (see notes). Sinusoidal (see Figure 1). Duration: circuit breaker in the “closed“ position; 0,9 nload Seven cycles/axis 1 octave/min; no load Two cycles/axis 1 octave/min. circuit breaker in the “opened“

35、 position; two cycles/axis 1 octave/min. See EN 3841-506. 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 acceleration 5 gnRandom (see Figure 2). Duration: circuit breaker in the “closed“ position; 0,9 nload 15 min/axis; no load 15

36、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 standard. Duration: circuit breaker in the “closed“ position; 0,9 nload Two cycles/axis; no load Two cycles/axis. circuit breaker

37、in the “opened“ position; two cycles/axis. 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 max. altitude 4 600 m and vibrations (see notes). Sinusoidal Applicability: see product standard. Duration: circuit

38、breaker in the “closed“ position; 0,9 nload Four 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 3841-511. 5 Hz to 54 Hz Constant shift 2 a 0,5 mm 54 Hz to 2 000 Hz Constant acceleration 3 gncontinued prEN

39、 2665-001:2012 (E) 8 Table 3 Environmental conditions (concluded) Tests Requirements Mechanical shocks (see notes) 50 gn 11 ms Half sine wave See EN 3841-507. Constant accelerations See product standard. Sand and dust See product standard. Corrosion (salt spray) See EN 3841-402, category S. Humidity

40、 See EN 3841-403, category A. Explosion-proofing See product standard. Contaminating liquids Cleaning and extinguishing products See EN 3841-405. Flammability (glow wire test) See EN 3841-406. Inflammability See test EN 3844-1, code B. Smoke density See test EN 2825, code A or code B. Toxicity See t

41、est EN 2826, code B. Overvoltage caused by lightning only on main contacts See EN 3841-308. 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 opening and closure. NOTE 2 For

42、 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 = mai

43、n contacts closed. . Circuit breaker in the opened position = main contacts opened. NOTE 5 Any additional vibrations testing (e.g. Sustained Engine Imbalance) shall be contractually agreed between users and manufacturers. prEN 2665-001:2012 (E) 9 Key 1 Peak to peak amplitude (mm) 2 Frequency (Hz) NO

44、TE The identification G-PK corresponds to peak gn. Figure 1 Sinusoidal vibrations prEN 2665-001:2012 (E) 10 Key 1 Spectral density (g2/Hz) 2 Frequency (Hz) Figure 2 Random vibrations prEN 2665-001:2012 (E) 11 Key 1 Frequency (Hz) 2 Acceleration level (g) 3 Time (s) NOTE The unit shall operate during

45、 application of a vibration on all three axes. The evolution of this vibration is given on the following figures with respect to time. Figure 3 Low frequencies vibrations prEN 2665-001:2012 (E) 12 7.3 Electrical tests See Table 4, Table 5 and Table 6. Table 4 Electrical characteristics Tests Require

46、ments Voltage drop of main contacts at nSee product standard and EN 3841-301 Dielectric strength (in V a.c. 50 Hz). Measurement points and voltage values: see product standard. See EN 3841-303. Leakage current 1 mA No breakdown or deterioration Insulation resistance a (on main and signal contacts) S

47、ee EN 3841-302. 100 M Trip threshold check See product standard and EN 3841-304. Overload trips See product standard and EN 3841-304. “Trip free“ tripping at 2 n, ambient temperature (23 5) C See EN 3841-304. Trip time: 2 s to 20 s Short-circuit resistance See Table 6. See product standard and EN 38

48、41-305. No-load and load endurance. The endurance test on each circuit breaker tested shall be always performed by, first, the no-load test followed then by one of the load tests at ngiven in the product standard.Test sampling should be sufficient to perform all possible combinations. Only the test

49、for a low current will not be preceded by the no-load test. See product standard and EN 3841-306. Measure and note every (1 000) operations (no-load and load) the voltage drops. Check of behaviour of circuit breakers in case of non-release. Test at 10 nand at short-circuit maximum current. See Table 7 and EN 3841-307. aTest points identical to those used for dielectric stren