1、AECMA STANDARD NORME AECMA AECMA NORM prEN 3661-005 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, single-pole, temperature compensated, rated current 20 A to 50 A Part 005: With polarized signal contact Product standard Srie arospatiale Disjoncteurs unipolaires compenss en temprature, intensits nominales 20 A 50 A Partie 005 : Avec c
3、ontact de signalisation polaris Norme de produit Luft- und Raumfahrt Schutzschalter, einpolig, Temperaturkompensiert, Nennstrme von 20 A bis 50 A Teil 005: Mit polarisiertem Signalkontakt Produktnorm This “Aerospace Series“ Prestandard has been drawn up under the responsibility of AECMA-STAN (The Eu
4、ropean 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
5、 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 AECMA-STAN, it will be submitted as a draft European Standard (prEN) to CEN (European Committee
6、 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. Edition approved for
7、 publication 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 3661-005:20052 Foreword This standard was reviewed by the Domain Technical Coordinator of AECMA-STANs Electrical Domain. After inquiries
8、and 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 . 9 6 Rated current code .
9、 10 7 Delivery codes . 10 8 Marking. 10 9 Technical specification 10 prEN 3661-005:20053 1 Scope This standard specifies the characteristics of single-pole circuit breakers, temperature compensated with a rated current from 20 A to 50 A, used in aircraft on-board circuits at a temperature between 55
10、 C and 125 C and at an altitude of 15 000 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 inversely. They will continue to function
11、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 referenced document (including any amendments) ap
12、plies. EN 3155-016, Aerospace series Electrical contacts used in elements of connection Part 016: Contacts, electrical, male, type A, crimp, class S Product standard.1)EN 3661-001, Aerospace series Circuit breakers, single-pole, temperature compensated, rated current 20 A to 50 A Part 001: Technical
13、 specification.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 electrical components.2)MIL-I-81969/1A, Installing
14、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 recovery.3)FED-STD-595B, Colours used in Governm
15、ent 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 as AECMA Prestandard at the date of publicatio
16、n 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 3661-005:20054 Key 1 Push button released 9 1 to 3 max. 2 Green colour according to FED-STD-595B No. 3409
17、0 10 3 White Gauge 20 connection pins according to EN3155-016M2018 4 Marking area, see Clause 8. 11 Indicative value 25 (see note) 5 Connecting screw and washer 12 6 Push button pressed Positioning lug in accordance with the panel cut-out, as per TR6083C202 7 Lockwasher 13 Rated current marking (whi
18、te on green) 8 Attachment nut 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 110,5 A55320-123M12 x 0,75 10,2 0,33 min.2 0,3A21 0,52519,5 max.12F1 and F2 :
19、see EN 3661-001, table 334 max.42 max.10 min.10 min.10 9,2 0,3926,5 0,3180-123148128max.6,6 0,654+104533 max.7 min.4531325 max.14687F2F1F1 and F2: see EN 3661-001, Table 3. prEN 3661-005:20055 3.2 Electrical diagram See Figure 2. Terminal No.: 1 and 2: Main contacts 3 and 5: Signal contacts Figure 2
20、 Electrical diagram 3.3 Mass 75 g max. (delivery code A including hardware). 3.4 Panel mounting See EN 3661-001. 4 Characteristics 4.1 Material, surface treatment See EN 3661-001. 4.2 Mechanical characteristics 4.2.1 Fasteners See EN 6113. 4.2.2 Recommended tightening torque of attaching nut for ins
21、tallation (5,25 0,25) Nm. 4.2.3 Recommended tightening torque of connection hardware for installation (2,35 0,15) Nm. 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. 213 5Push-button released2135Push-button pres
22、sed3 5or35orprEN 3661-005:20056 4.2.5 Resistance to vibrations 4.2.5.1 Combined test: ambient temperature at 70 C and vibrations Sinusoidal: 10 gn, see EN 3661-001. Random: 5,8 gn, see EN 3661-001. Low frequencies: 10 gn, see EN 3661-001. 4.2.5.2 Combined test: ambient temperature at 85 C, altitude
23、and vibrations Sinusoidal: 3 gn, see EN 3661-001. 4.2.6 Resistance to shocks 50 gn, see EN 3661-001. 4.2.7 Mechanical endurance See Table 6. 4.3 Environment characteristics 4.3.1 Humidity See EN 3661-001. 4.3.2 Corrosion See EN 3661-001. 4.3.3 Contaminating fluids See EN 3661-001. 4.3.4 Over-voltage
24、 caused by lightning See EN 3661-001. 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 voltage 115 V a.c., 360 Hz to 800 Hz prEN 3661-005:20057 4.4.2 Diode of signal contact characteristic Maximum current at 125
25、 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 nSee Table 2. Table 2 Ratings A 20 25 30 35 40 45 50 U max. at n V 0,15 0,15 0,15 0,15 0,12 0,12 0,12 Signal circuit : 28 V d.c.; I = 3 mA : U 1,0 V. NOTE When a signal con
26、tact 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. 4.4.4 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
27、 C Ratings On ground At 15 000 m On ground 23 5 110 105 145 55 5 110 105 165 70 5 105 100 145 125 5 All 90 80 145 4.4.5 Overload trip See Table 4. prEN 3661-005:20058 Table 4 Overload (in % of n) 200 500 1 000 Ambient temperatures C Ratings A Trip time s 23 5 4 to 15 55 5 70 125 5 All 1,5 0,15 to 2,
28、50 0,045 to 0,600 4.4.6 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 4 000 A L/R 1 ms 2 000 A r.m.s. Test altitudes On the ground and at maximum altitude (15 000 m, 12 100 Pa) Number of operations 1 CO a+ 2 OCO baBrea
29、k operation (for definition see EN 3841-305). bMake operation (for definition see EN 3841-305). 4.4.7 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 Main contacts Applicable Not applicable Resistive n, 28 V d.c. Inductiv
30、e L/R = 5 ms n, 28 V d.c. Inductive 0,6 cos 0,7 n, 115 V a.c. - 360 Hz to 800 HzAll ratings Signal contacts ApplicableResistive 3 mA, 28 V d.c. Resistive 3 mA, 5 V d.c. Lamp 0,2 A, 28 V d.c. Resistive 0,5 A, 28 V d.c. NOTE 1 One operation corresponds to one closing + one opening. NOTE 2 Tolerances 5
31、 % on current, voltage and frequency values. prEN 3661-005:20059 4.4.8 Dielectric rigidity See Table 7. Table 7 Closed position Z = 0 m Z = 15 000 m 1 and 2 with attachment 1 and 2 with 3 1 and 2 with 5 1 500 V 400 V 3 with 5 3 and 5 with attachment 500 V 150 V Open position Z = 0 m Z = 15 000 m 1 w
32、ith 2 1 and 2 with attachment 3 and 5 with 1 3 and 5 with 2 1 500 V 400 V 3 and 5 with attachment 500 V 150 V 4.4.9 Insulation resistance According to EN 3661-001, Table 5. 5 Designation EXAMPLE Description block CIRCUIT BREAKER Identity block EN3661-005A20AA Number of EN standard Design code, A: gr
33、een 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. prEN 3661-005:200510 6 Rated current code See Table 8. Table 8 Rating current n (A) 20 25 30 35 40 45 50 Marking on actuat
34、or 20 25 30 35 40 45 50 Rated current code 20A 25A 30A 35A 40A 45A 50A 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 2 Connecting lock wa
35、sher 2 Attachment nut 1 A EN 6113A Attachment lock washer 1 X Attachment nut 1 B EN 6113B Attachment lock washer 1 X aSpare parts could be ordered separately, informations see EN 6113. 8 Marking As defined on the drawing and unless otherwise specified by contract, marking shall include: the designat
36、ion defined in Clause 5, 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 3661-001.
