1、AECMA STANDARD NORME AECMA AECMA NORM prEN 2996-005 Edition P 3 May 2005 PUBLISHED BY THE EUROPEAN ASSOCIATION OF AEROSPACE INDUSTRIES - STANDARDIZATION Gulledelle 94 - B-1200 Brussels - Tel. + 32 2 775 8110 - Fax. + 32 2 775 8111 - www.aecma-stan.orgICS: 49.060 Supersedes edition P 2 January 1999 D
2、escriptors: ENGLISH VERSION Aerospace series Circuit breakers, three-pole, temperature compensated, rated current 1 A to 25 A Part 005: With polarized signal contact Product standard Srie arospatiale Disjoncteurs tripolaires compenss en temprature, intensits nominales 1 A 25 A Partie 005 : Avec cont
3、act de signalisation polaris Norme de produit Luft- und Raumfahrt Schutzschalter, dreipolig, Temperaturkompensiert, Nennstrme von 1 A bis 25 A Teil 005: Mit polarisiertem Signalkontakt Produktnorm This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA-STAN (The Europ
4、ean Association of Aerospace Industries - 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 sh
5、all 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 AECMA-STAN, it will be submitted as a draft European Standard (prEN) to CEN (European Committee fo
6、r 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. Edition approved for pu
7、blication 31 May 2005 Comments should be sent within six months after the date of publication to AECMA-STAN Electrical Domain Copyright 2005 by AECMA-STAN prEN 2996-005:20052 Foreword This standard was reviewed by the Domain Technical Coordinator of AECMA-STANs Electrical Domain. After inquiries and
8、 votes carried out in accordance with the rules of AECMA-STAN defined in AECMA-STANs General Process Manual, this standard has received approval for Publication. Contents Page 1 Scope 3 2 Normative references. 3 3 Dimensions and mass. 3 4 Characteristics. 5 5 Designation 10 6 Rated current code 10 7
9、 Delivery codes 10 8 Marking. 11 9 Technical specification 11 prEN 2996-005:20053 1 Scope This standard specifies the characteristics of three-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 12
10、5 C for ratings 15 A and 55 C and 90 C for ratings 15 A 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 with a polarized signal contact which is open when main contacts are closed, and
11、 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 dated references, only the edition cited applies. For undated references, the latest edition of the refere
12、nced document (including any amendments) applies. EN 2996-001, Aerospace series Circuit breakers, three-pole, temperature compensated, rated current 1 A to 25 A Part 001: Technical specification. 1)EN 3155-016, Aerospace series Electrical contacts used in elements of connection Part 016: Contacts, e
13、lectrical, male, type A, crimp, class S Product standard.1)EN 3841-305, Aerospace series Circuit breakers Test methods Part 305: Short-circuit performance. EN 6113, Aerospace series Circuit breaker, connecting and attachment hardware. 1)TR 6083, Aerospace series Cut-outs for installation of electric
14、al 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)MIL-S-19500, Semiconductor device, diode, silicon, fast re
15、covery.3)FED-STD-595B, Colours 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 be adhered to. Dimensions are in millimetres. See Figure 1. 1) Published
16、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. 20301 USA. prEN 2996-005:20054 Key 1 Push button released 10 1 to 3 max. 2
17、 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 marking (white on green) 6 Connecting screw and washer 14 7 Push button pr
18、essed 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, Table 3. NOTE Tools noted in subclause 4.2.4 shall be applied without interfering with the terminal 2 connection. Even if circuit breakers a
19、re grouped. Figure 1 Configuration Dimensions Tolerances 341,50-0,5234,6 min.50,5 A12439 8,4 0,3C2B2A2C1B1A115,8 max.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 min.6,35 0,42,5 0,318,5 1310,819,5 max.3max.6453453A7 min.5 0,536 247max.F1 and F2 : s
20、ee EN 2996-001 table 3A2 B2 C2814 10,2 0,317119,8 max.prEN 2996-005:20055 3.2 Electrical diagram See Figure 2. Terminal No. : 1 and 2: Main contacts 3 and 5: Signal contacts Figure 2 Electrical diagram 3.3 Mass 64 g max. (delivery code A including hardware). 3.4 Panel mounting See EN 2996-001. 4 Cha
21、racteristics 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 Recommended tightening torque of connection hardware for installation (1,6 0,1) Nm A2 A
22、1B2 B1C2 C13 5Push-button releasedA2 A1B2 B1C2 C13 5Push-button pressed3 5or3 5orprEN 2996-005:20056 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. 4.2.5 Resistance to vibrations 4.2.5.1 Combined test: ambient
23、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 gn, see EN 2996-001. 4.2.6 Resistance to shocks 50 gn, see EN 299
24、6-001. 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 2996-001. 4.4 Electrical characteristics 4.4.1 Nominal voltages of
25、 main contacts See Table 1. Table 1 Nominal voltage 115/200 V a.c., 360 Hz to 800 Hz prEN 2996-005:20057 4.4.2 Diode of signal contact characteristics Max. current at 125 C: 0,5 A. Peak repetitive reversal voltage: 800 V min. Quality standard: JANTX according to MIL-S-19500. 4.4.3 Voltage drop at na
26、nd 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 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 1,0 V. NOTE When a signal contact has been operated with a power gr
27、eater than 60 mW and/or with a voltage higher than 28 V d.c., it loses its low current quality. 4.4.4 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 On ground At 22 000 m On gr
28、ound 23 5 110 105 140 55 5 110 105 160 70 5 All 105 100 140 90 5 20 and 25 90 80 140 125 5 1 to 15 90 80 140 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 submitte
29、d to the load and other poles are not loaded; - increased by about 10 % when two poles are submitted to the load and the other one is not loaded; - not increased when the two other poles are loaded at 0,9 n. prEN 2996-005:20058 4.4.5 Overload trip See Table 4. Table 4 Overload (in % of n) 200 500 1
30、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 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
31、 1 pole is loaded, the two other poles are not loaded. 4.4.6 Short-circuit values See Table 5. Table 5 Nominal voltage 115/ 200 V a.c., 360 Hz to 800 Hz 0,8 cos 1 Prospective currents 1 800 A r.m.s. 1 500 A r.m.s. 1 100 A r.m.s. Test altitudes On the ground and at maximum altitude (22 000 m, 4 000 P
32、a) On the ground and at cabin maximum altitude (4 600 m, 57 400 Pa) At maximum altitude (22 000 m, 4 000 Pa) Number of operations See note. 1 CO a+ 2 OCO b1 CO a+ 2 OCO bNOTE For the test at 1 800 A, an opening of the circuit by a destruction of the circuit breaker, (without bursting, flaming or thi
33、ck smokes) is allowed even if this destruction happens during the first CO. If the product passes 1 CO + 2 OCO at 1 800 A/115 V a.c., tests at 1 100 A and 1 500 A will not be necessary. aBreak operation (for definition see EN 3841-305). bMake operation (for definition see EN 3841-305). 4.4.7 No-load
34、 and load endurance See Table 6. prEN 2996-005:20059 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 contacts Applicable Resistive 0,5 A, 28 V d.c. Resistive 3 mA, 28 V d.c Res
35、istive 3 mA, 5 V d.c Lamp 0,2 A, 28 V d.c. NOTE 1 One operation corresponds to one closing + one opening. NOTE 2 Tolerances 5 % on current, voltage and frequency values. 4.4.8 Dielectric rigidity See Table 7. Table 7 Closed position Z = 0 m Z = 22 000 m A1, B1, C1 with attachment A1, B1, C1 with 3 A
36、1, B1, C1 with 5 A1, A2 with B1, B2 and C1, C2 B1, B2 with A1, A2 and C1, C2 1 500 V 400 V 3 with 5 3 and 5 with attachment 500 V 150 V Open position Z = 0 m Z = 22 000 m A1, B1, C1 with A2, B2, C2 A1, B1, C1, A2, B2, C2 with attachment3 and 4 with A1, B1, C1 3 with 4 with A2, B2, C2 A1, A2 with B1,
37、 B2 and C1, C2 B1, B2 with A1, A2 and C1, C2 1 500 V 400 V 3 and 5 with attachment 500 V 150 V 4.4.9 Insulation resistance According to EN 2996-001, Table 5. prEN 2996-005:200510 5 Designation EXAMPLE Description block CIRCUIT BREAKER Identity block EN2996-005A20AA Number of EN standard Design code,
38、 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 Rating current n (A) 1 2 2,5 3 5 7,5 10 15 20 25 Marking on actuator 1 2 2
39、 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 Pieces per part Fitted Supplied separately Connecting screw 6 Connecting
40、lock washer 6 Attachment nut 1 A EN6113C1 Attachment lock washer 1 X Attachment nut 1 B EN6113B1 Attachment lock washer 1 X aSpare parts could be ordered separately, informations see EN 6113. prEN 2996-005:200511 8 Marking As defined on the drawing and unless otherwise specified by contract, marking
41、 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 and the 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 identification numbers see Figure 1. 9 Technical specification See EN 2996-001.
