1、CEN PRENx2665- 001 74 = 3404587 0064356 Ob1 AECMA STANDARD prEN 2665-001 NORME AECMA Edition P 1 AECMA NORM June 1994 DIT PAR LASSOCIATION EUROPENNE DES CONSTRUCTEURS DE MATRIEL AROSPATIAL Technopolis - 175, rue Jean-Jacques Rousseau - F-92138 Issy-les-Moulineaux Cedex - Tl. (1) 47.36.98.76 UDC : 62
2、1.316.57:629.7 Descriptors : Aircraft industry, aircraft equipment, circuit breaker, manufacturing requirements, designation, marking ENGLISH VERSION Aerospace series Circuit breakers, three-pole, temperature compensated, rated currents 20 A to 50 A Part O01 : Technical specification Srie arospatial
3、e Disjoncteurs tripolaires compenss en temprature, intensits nominales 20 A 50 A Partie O01 : Spcification technique Luft- und Raumfahrt Temperaturkompensierte dreipolige Schutzschalter, Nennstrme von 20 A bis 50 A Teil O01 : Technische Lieferbedingungen This “Aerospace Series I Prestandard has been
4、 drawn up under the responsibility of AECMA (Association Europenne des Constructeurs de Matriel Arospatial). It is published on green paper for the needs of AECMA-Members. It has been technically approved by the experts of the concerned Technical Committee following comment by the Member countries.
5、Subsequent to the publication of this prestandard, 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 signature of the AECMA Standard Checking Centre (NPS) and forma
6、l agreement of the Official Services of the Member countries it will be submitted as a draft European Standard to CEN (European Committee for Standardization) for formal vote. Nota - Extra copies can be supplied by B.N.A.E. - Technopolis 54 - 199, rue Jean-Jacques Rousseau - 921 38 ISSY-LES-MOULINEA
7、UX CEDEX C2 Chairman I Edition approved for publication Comments should be sent within six months after the date of publication to 1994-06-30 AECMA Technopolis - 175, rue Jean-Jacques Rousseau 921 38 Issy-les-Moulineaux Cedex - FRANCE I M. Le Cunff aecma 1994 Copyright Association Europeene des Cons
8、tructeurs de Materiel Aerospatial Provided by IHS under license with AECMA Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-CEN PRENxZbb5- 001 94 m 3404589 0064357 TTB m Rated currents Un) A 20 25 30 35 40 Code 20A 25A 30A 35A 40A Range 1 Low Medium Button marking 2
9、0 I 25 I 30 35 I 40 Page 3 prEN 2665-001 : 1994 45 50 45A 50A High 45 I 50 1 Scope Voltage of aircraft electrical system This standard specifies the required characteristics for three-pole temperature compensated circuit breakers with rated currents from 20 A to 50 A for use in aircraft electrical s
10、ystems, at a temperature between - 55 OC and 90 OC and at a maximum altitude of Z = 15 O00 m. It shall be used together with EN 2350. These circuit breakers are for use in aircraft with power supplies in accordance with EN 2282. 1 15/200 V a.c., frequency 400 Hz, triple phase 2 Normative references
11、IS0 7137 : 1987 Aircraft - Environmental conditions and test procedures for airborne equipment (Endorsement of EUROCAE/EDI 4B and RTCA/DO-I60B) Aerospace series - Characteristics of aircraft electrical supplies Aerospace series - Circuit breakers - Technical specification Aerospace series - EN aeros
12、pace products - Qualification procedure EN 2282 EN 2350 EN 3042 3 Definitions See EN 2350. 4 Description These circuit breakers are operated by a push-pull control button with trip free release, and delayed tripping ; they are explosion-proof. Their function is assured up to the short-circuit curren
13、t. 5 Required characteristics Rated currents (/n) and voltage See tables 1 and 2. Previous page is blank Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMA Not for ResaleNo reproduction or networking permitted without license from IHS-,
14、-,-CEN PRENwZbb5- OD3 94 3404589 DOb43.58 934 = Characteristics Closing force Opening force Operating force Page 4 prEN 2665-001 : 1994 Requirements 20 N to 80 N 5 N to 45 N If an aircraft electrical power supply of variable frequency is used, the limit values (voltage and frequency) shall be specif
15、ied, in accordance with EN 2282. Actuation component Attachment 6 Tests Transverse load 110 N minimum Longitudinal Push direction 1 1 O N minimum load Pull direction 110 N minimum Tightening torque 5 Nm minimum Rotational torque 4 Nm minimum 6.1 Mechanical tests strength See table 3 and 5.2 of EN 23
16、50. Tightening torque I 2,5 Nm minimum Table 3 Tensile strength Main connections 185 N minimum along FI Mechanical Compression strength I 90 N minimum along F2 1, Characteristics Vibration 1) : curve J, IS0 7137 Mechanical shock 1) Centrifugal acceleration 1) I I I 1 Requirements 5 Hz to 54 Hz, cons
17、tant amplitude 2 a = 0,51 mm 54 Hz to 2000 Hz, constant acceleration 29,43 m/s2 (= 3 g) 245,25 m/s2 (= 25 g), 11 mc 166,8 m/s2 (= 17 g) Corrosion Humidity See EN 2350 See EN 2350 Category B : 10 cycles i) See product standard I Explosion-proofness Co nt am i nat ion by liquids 6.2 Short-circuit curr
18、ent Voltage 11 5/200 V, 400 Hz, three-pole load See EN 2350 Environmental tests See table 4 as well as 5.3 and 5.4 of EN 2350 I Sand and dust I See EN 2350 I 1) The tiahtenina toraues shall be those defined in the Droduct standard. Copyright Association Europeene des Constructeurs de Materiel Aerosp
19、atial Provided by IHS under license with AECMA Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-CEN PRENx2665- 001 94 = 3404589 0064359 870 Characteristics Voltage drop at rated current Insulation resistance Page 5 prEN 2665-001 : 1994 Requirements See table 6 Minim
20、um 100 MQ 6.3 Electrical tests See tables 5 to 12 and 5.5 of EN 2350 400 V at 15 O00 m t = (23 f 5) OC Upper and lower trip limits Overload tripping Table 5 - Electrical characteristics See table 7 See table 8 Maximum thresholds at maximum altitude of 15 O00 m = 121 hPa Ambient - 55 I 105 % of In 1
21、500 V on ground t = (23 f 5) OC t = (- 55 i: 5) oc t = (90 f 5) oc No tripping Leakage current I 1 mA No flashover, no damage Short-circuit performance Service life at no load and with load Service life under overload trip conditions See table 9 See table 10 See table 11 Trip free operation Rated cu
22、rrent A Maximum v voltage drop 1) See table 8, at 23 OC only 20 25 30 35 40 45 50 0,15 0,12 Rated current A 20 to 50 temperature I 23 I 105 %ofZn I Temperature Load as % of In +5 oc Minimum 1 h Maximum I1 h 23 110 145 - 55 110 165 70 105 145 90 1 O0 145 OC I 90 I 80 %of In I Overload test with mecha
23、nism locked I See table 12 11) The voltage drop is not measured at minimum current I For detection of the minimum threshold, the load is identical on all poles. For detection of the upper threshold, the load shall be increased : - - by approximately 20 YO when one pole is subjected to the load and t
24、he others are not loaded ; by approximately 10 % when two poles are subjected to the load and the other is not loaded. Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMA Not for ResaleNo reproduction or networking permitted without lice
25、nse from IHS-,-,-CEN PRENxZbb5- 00% 94 = 3404589 OOb43bO 592 Page 6 prEN 2665-001 : 1994 Temperature Overload as % of rated current 200 500 1 O00 f 5 OC I Three poles I One pole I Three poles I One pole I Three poles I One pole I 23 - 55 90 I Triminn times in s I 2 to 18 3 to 60 3 to 110 to 2 to 22
26、0,15 ., )I 1,5 to 17 1,5 to 22 3,5 52 0,85 1,3 Ground Test on three poles in series. Test on one pole, the others are not under load. 15 O00 m Table 9 - Short-circuit performance One pole 3 2) I Rated voltage Three poles Three poles 1 1 2) 2) I Open circuit voltage I Fault current establishment time
27、 Connection method Test altitude Number of samples per range oco 1) 1) For CO and OCO, see EN 2350 2) See product standard 11 5/200 V a.c., 400 Hz (1 20/208 f 5) V 2 ms to 5 ms i-r-i Fuse 0,l A m Earth 0 I 20 A to 50 A Test on Test on one pole : for each specimen, one pole shall be subjected to trip
28、ping current, the others to In. Each of the three poles shall be tested on all specimens provided for this test. Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMA Not for ResaleNo reproduction or networking permitted without license fr
29、om IHS-,-,-CEN PREN*E!bb5- O01 94 - 3404589 OOb4LbL 429 Circuit characteristics In 20 A to 50 A Page 7 prEN 2665-001 : 1994 Number of cycles to be performed 11 5/200 V a.c., frequency 400 Hz three-pole load Open circuit Close At In inductive open (Ml 5 O00 2 500 + 0,6 cos cp 0,7 Test on three poles
30、: the three poles shall be loaded equally with the short-circuit current. One extra specimen shall be used. Only test groups 13 and 14 of EN 2350 apply. The additional specimens required shall be taken from groups 6, 15 and 16. Table 10 - Service life open circuit and loaded Supply voltage Test cond
31、itions Overload z=o E = 15 O00 m t = (23 k 5) OC t = (23 rt 5) OC 1) Tests marked (M) shall be preceded by a no-load mechanical endurance test. NOTE : Tolerance for voltage, current and frequency values : I5 %. 1 15/200 V a.c. frequency 400 Hz Table 11 - Service life under overload trip conditions I
32、= 5Zn 15 cycles CO 1) 20 cycles CO 1) 0,6 cos cp 0,7 15 cycles OCO 1) I The circuit breaker shall be connected to cable with section to EN 2350 with length of 0,5 m without strains 1 O x In and short-circuit current (Zsc) V = 115 V a.c. 1OxZn 8s zsc 1 s Loads Opening time Opening of circuit by destr
33、uction of circuit breaker without production of flames or excessive smoking NOTE : Test performed with mechanism locked, simulating jamming of contacts, without direct intervention on thermocouple. One phase only locked and loaded. Requirement 7 Quality assurance See EN 3042 Sampling plan : see EN 2350 8 Designation See product standard 9 Marking See EN 2350. Copyright Association Europeene des Constructeurs de Materiel Aerospatial Provided by IHS under license with AECMA Not for ResaleNo reproduction or networking permitted without license from IHS-,-,-
