1、BS EN 2756:2010ICS 49.060NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDAerospace series Lamps, incandescent Test methodsThis British Standardwas published under theauthority of the StandardsPolicy and StrategyCommittee on 31 March2010 BSI 2010ISBN 978 0 580 68
2、340 4Amendments/corrigenda issued since publicationDate CommentsBS EN 2756:2010National forewordThis British Standard is the UK implementation of EN 2756:2010.The UK participation in its preparation was entrusted to TechnicalCommittee ACE/6, Aerospace avionic electrical and fibre optictechnology.A l
3、ist of organizations represented on this committee can be obtained onrequest to its secretary.This publication does not purport to include all the necessary provisionsof a contract. Users are responsible for its correct application.Compliance with a British Standard cannot confer immunityfrom legal
4、obligations.BS EN 2756:2010EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 2756 February 2010 ICS 49.060 English Version Aerospace series - Lamps, incandescent - Test methods Srie arospatiale - Lampes incandescence - Mthodes dessais Luft- und Raumfahrt - Glhlampen - Prfverfahren This European S
5、tandard was approved by CEN on 26 September 2009. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references conce
6、rning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its ow
7、n language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvi
8、a, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussel
9、s 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 2756:2010: EBS EN 2756:2010EN 2756:2010 (E) 2 Contents Page Foreword 31 Scope 42 Normative references 43 Tests 43.1 Test conditions 43.2 Visual examination 43.2.1 External appe
10、arance 43.2.2 Quality of marking . 53.3 Mass and dimensions . 53.4 Electrical and photometric tests 53.4.1 General 53.4.2 Homogeneity of filament . 53.4.3 Luminous flux at nominal voltage . 53.4.4 Luminous flux at reduced voltage . 53.4.5 Colour temperature of the filament 63.4.6 Voltage strength an
11、d insulation resistance 63.4.7 Life . 73.5 Mechanical tests 103.5.1 Test support . 103.5.2 Vibration resistance test . 113.5.3 Impact resistance test . 113.5.4 Mechanical strength of caps test . 113.6 Climatic tests . 123.6.1 Behaviour at extreme temperature test . 123.6.2 Salt spray tests 133.7 Tes
12、ts form. 13BS EN 2756:2010EN 2756:2010 (E) 3 Foreword This document (EN 2756:2010) has been prepared by the Aerospace and Defence Industries Association of Europe - Standardization (ASD-STAN). After enquiries and votes carried out in accordance with the rules of this Association, this Standard has r
13、eceived the approval of the National Associations and the Official Services of the member countries of ASD, prior to its presentation to CEN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by August
14、 2010, and conflicting national standards shall be withdrawn at the latest by August 2010. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rig
15、hts. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ir
16、eland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. BS EN 2756:2010EN 2756:2010 (E) 4 1 Scope This standard specifies the test methods for incandescent lamps used for aerospace appl
17、ications. It concerns lamps used for lighting and/or for interior or exterior signalling. 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
18、 of the referenced document (including any amendments) applies. EN 2240-001:2009, Aerospace series Lamps, incandescent Part 001: Technical specification EN 2240-002, Aerospace series Lamps, incandescent Part 002: Main characteristics ISO 2678, Environmental tests for aircraft equipment Insulation re
19、sistance and high voltage tests for electrical equipment ISO 7137, Aircraft Environmental conditions and test procedures for airborne equipment IEC 60061-3, Lamp caps and holders together with gauges for the control of interchangeability and safety Part 3: Gauges 3 Tests 3.1 Test conditions Unless o
20、therwise specified, the tests shall be carried out under the following conditions: ambient temperature: 15 C to 35 C; atmospheric pressure: 84 kPa to 107 kPa; relative humidity 6 V; 0,2 % for a test voltage 6 V. When thermal equilibrium has been reached, the intensity of the electric current and the
21、 luminous flux are measured. The power consumed shall be equal to the nominal value to within 10 %. The luminous flux recorded shall be equal to the nominal values specified in the product standards, taking account of the tolerances ( 25 %, 15 %, 10 %) appropriate to the category of lamp. 3.4.4 Lumi
22、nous flux at reduced voltage This test concerns the lamps for use at reduced voltage. The lamp shall first be subjected to tests specified in 3.4.3. The lamp shall then be energized with direct current at reduced stabilized voltage as specified in the product standard applying the same tolerance as
23、under 3.4.3. BS EN 2756:2010EN 2756:2010 (E) 6 When thermal equilibrium is reached, the electric intensity and the luminous flux are measured. The luminous flux measured shall be equal to the value imposed in the product standard to within 25 %. 3.4.5 Colour temperature of the filament This test sha
24、ll apply to clear glass lamps (colourless glass) under nominal conditions of use when the colour temperature is mentioned in the product standards. The lamp to be measured shall be energized at nominal voltage for a period of time which is sufficient to allow thermal equilibrium to be reached. Then
25、the colour temperature shall be measured, recording at the same time the intensity of the current passing through the lamp. The following measuring methods may be used: interpolation method based on the ratio of the red/blue luminous flux and by reference to the known colour temperature of three gau
26、ge lamps energized under specified conditions (the colour temperatures of these gauges lamps shall encompass the value specified for the lamps examined); Ulbricht sphere with a two-colour pyrometer; Ulbricht sphere with a coloured measuring head and measuring device; pyrometer with incandescent fila
27、ment. Requirement: the colour temperature should conform with the nominal value mentioned in the product standards. The measured value shall be only for information if not otherwise specified. NOTE In the event of discrepancy between the results obtained by means of these different methods, the meth
28、od of interpolation based on the ration of the red/blue luminous flux and by reference to the gauge lamps shall be taken as the reference method. 3.4.6 Voltage strength and insulation resistance 3.4.6.1 Measurements to be undertaken on lamps in which the filament shall be supplied by a free wire or
29、on bi-pin lamps After mechanical destruction of the filament, the following tests shall be carried out: a) voltage strength test in accordance with ISO 2678. An alternating voltage is applied between the two power leads under the following conditions: 1) alternating current 500 V r.m.s, 50 Hz to 60
30、Hz; 2) method of application: progressive; 3) duration of application: 1 min. Requirements: 4) there shall be no breakdown; 5) the value of the leakage current shall not exceed 0,5 mA (r.m.s.); b) insulation resistance in accordance with ISO 2678. A test voltage of 50 V d.c. to 100 V d.c. is applied
31、 between the two power leads. BS EN 2756:2010EN 2756:2010 (E) 7 The resistance is measured after 1 min of application. Requirement: insulation resistance 100 M. 3.4.6.2 Measurements to be undertaken on lamps equipped with a single-contact cap After mechanical destruction of the filament, the tests s
32、et out in 3.4.6.1, a) and b) shall be carried out, applying the test voltages between the contact and the outer casing of the cap. 3.4.6.3 Measurements to be undertaken on lamps the filament of which shall be supplied by two contacts insulated from the outer casing of the cap 3.4.6.4 Measurements to
33、 be undertaken between the outer casing of the cap and one of the contacts (or the two contacts joined together) a) voltage strength test in accordance with ISO 2678. An alternating voltage shall be applied between the two power leads under the following conditions: 1) alternating voltage 500 V r.m.
34、s, 50 Hz to 60 Hz; 2) method of application: progressive; 3) duration of application: 1 min. Requirements: 4) there shall be no breakdown, nor flashover; 5) the value of the leakage current shall not exceed 0,5 mA (r.m.s.); b) insulation resistance in accordance with ISO 2678. A test voltage of 50 V
35、 d.c. to 100 V d.c. shall be applied between the outer casing of the cap and one of the contacts. The resistance is measured after 1 min of application. Requirement: insulation resistance 100 M. 3.4.6.5 Measurements to be undertaken between the two contacts After mechanical destruction of the filame
36、nt, the tests set out in 3.4.6.2, a) and b) shall be carried out, applying the test voltages between the two contacts. 3.4.7 Life 3.4.7.1 General The life to be taken into account shall be the value specified in the product standard. Two types of tests are applied to verify the life of the lamps. BS
37、 EN 2756:2010EN 2756:2010 (E) 8 The duration of static life (3.4.7.2) and the duration of dynamic life (3.4.7.3) are specified in the product standard. Unless otherwise specified in the product standards, the tests are carried out on lamps which are so positioned that their axis is horizontal. The p
38、ower supplies used are such that the electric current is not limited when the lamps are energized. 3.4.7.2 Static tests Half of the lamps are supplied with direct current, the other half with alternating current. The duration of test is determined on the basis of the life indicated in the product st
39、andards (duration of static life): a) for lamps with a life of less than or equal to 4 000 h, the test duration is equal to the life; during this test, the lamps are energized at nominal voltage; b) for lamps with a life of more than 4 000 h, the duration of the test is equal to 3,5life; during the
40、test, the lamps shall be energized at a voltage equal to 1,1 times the nominal voltage. During the course of the test, the lamps are extinguished twice every 24 h for approximately 30 min each time. The following measurements are taken: c) during the course of the test, at the end of a period corres
41、ponding to half of tests in practice, (50 5) % of the total test duration, measurement of electric intensity and of luminous flux is in accordance with 3.4.2; Requirements: the luminous flux and the electric intensity shall remain within the tolerances specified in 3.4.2; a) at the end of the tests,
42、 measurement of electric intensity and luminous flux is in accordance with 3.4.2. Requirements: the characteristics shall remain within the tolerances set out below: 1) electric intensity: nominal value 15 %; 2) luminous flux: nominal value 30 %. 3.4.7.3 Dynamic tests The lamps are supplied with dir
43、ect current. These tests consist of several successive phases intended to evaluate the behaviour of the lamps in different environments. After each phase and before executing the measures, the lamps undergo an overhauling obtained by lighting them during 1 h at nominal voltage in the test conditions
44、 (3.1). The tests are carried out in the order indicated below. BS EN 2756:2010EN 2756:2010 (E) 9 Phase A (see Figure 1) Tests at ambient temperature: 15 C to 35 C. Duration of test: 2Twhere T is the duration of dynamic life specified in the product standard. The lamps are energized at nominal volta
45、ge under the conditions indicated as follows: Figure 1 During this phase, the lamps are submitted to a succession of cycles (t1+ t2) specified as follows: t1= (30 2) s, lamps energized at nominal voltage; t2= (30 2) s, lamps shall not energized. Then, measure the intensity of current and the luminou
46、s flux according to 3.4.3. Requirements: as 3.4.3. Phase B (see Figure 2) Tests at low temperature: 55 C. Duration of test: 2Twhere T is the duration of dynamic life specified in the product standard, in hours (h). The lamps are energized at nominal voltage under the conditions indicated as follows:
47、 Figure 2 BS EN 2756:2010EN 2756:2010 (E) 10 During this phase, the lamps are submitted to a sequence of cycles (t3+ t4) specified as follows: t3= (120 10) s, lamps energized at nominal voltage; t4= (240 10) s, lamps not energized. Then measure the intensity of current and the luminous flux accordin
48、g to 3.4.3. Requirement: as 3.4.3. Phase C Tests in dry heat: 85 C. Duration of test: 2 T , where T is the duration of dynamic life specified in the product standard, in hours (h). During this phase, the lamps are energized at nominal voltage. Then, measure the intensity of current and the luminous
49、flux according to 3.4.3. Phase D Tests at ambient temperature: 15 C to 35 C. Duration of test: 3 T , where T is the duration of dynamic life specified in the product standard, in hours (h). During this phase, the lamps are energized at 1,1 times nominal voltage. Then, measure the intensity of current and the luminous flux according to 3.4.3. Requirements: power absorbed: initial value
