1、DRAFT FOR DEVELOPMENT DD ENV 50235:1997 Aeronautical ground lighting electrical installation Signs: Equipment specifications and tests ICS 93.120DDENV50235:1997 This Draft for Development, having been prepared under the direction of the Electrotechnical Sector Board, was published underthe authority
2、 of the Standards Board and comesintoeffect on 15September1997 BSI 05-1999 ISBN 0 580 27796 8 National foreword This publication is not to be regarded as a British Standard. It is being issued in the Draft for Development series of publications and is of a provisional nature because it is an interim
3、 draft. A revised version of this document is being produced by IEC/TC97. It should be applied on this provisional basis, so that information and experience of its practical application may be obtained. Comments arising from the use of this Draft for Development are requested so that UK experience c
4、an be reported to the European organization responsible for its conversion into a European Standard. A review of this publication will be initiated2years after its publication by the European organization so that a decision can be taken on its status at the end of its three-year life. The commenceme
5、nt of the review period will be notified by an announcement in Update Standards. According to the replies received by the end of the review period, the responsible BSI Committee will decide whether to support the conversion into a European Standard, to extend the life of the prestandard or to withdr
6、aw it. Comments should be sent in writing to the Secretary of BSI Technical Committee EPL/97, Lighting and beaconing of aerodromes, at389Chiswick High Road, London W44AL, giving the document reference and clause number and proposing, where possible, an appropriate revision of the text. Cross-referen
7、ces Attention is drawn to the fact that CEN and CENELEC Standards normally include an annex which lists normative references to international publications with their corresponding European publications. The British Standards which implement international or European publications referred to in this
8、document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “Find” facility of the BSI Standards Electronic Catalogue. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, th
9、eENV title page, pages 2 to 10 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No. Date CommentsDDENV50235:1997 BSI 05-199
10、9 i Contents Page National foreword Inside front cover Foreword 2 Text of ENV 50235 3ii blankEUROPEAN PRESTANDARD PRNORME EUROPENNE EUROPISCHE VORNORM ENV 50235 February 1997 ICS 93.120 Descriptors: Electrical installation, lighting, aerodrome, sign, classification, designation, marking, performance
11、, dependability. construction, test English version Aeronautical ground lighting electrical installation Signs: Equipment specifications and tests This European Prestandard (ENV) was approved by CENELEC on 1996-07-02as a prospective standard for provisional application. The period of validity of thi
12、s ENV is limited initially to three years. After two years the members of CENELEC will be requested to submit their comments, particularly on the question whether the ENV can be converted into a European Standard (EN). CENELEC members are required to announce the existence of this ENV in the same wa
13、y as for an EN and to make the ENV available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the ENV) until the final decision about the possible conversion of the ENV into an EN is reached. CENELEC members are the
14、national electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and UnitedKingdom. CENELEC European Committee for Electrotechnical Standardization Comit Europen de Norm
15、alisation Electrotechnique Europisches Komitee fr Elektrotechnische Normung Central Secretariat: rue de Stassart 35, B-1050 Brussels 1997 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC members. Ref. No. ENV 50235:1997 EENV50235:1997 BSI 05-1999 2 Forew
16、ord This European Prestandard was prepared by the CENELEC BTTF72-3, Lighting fittings for aerodromes. The text of the draft was submitted to the CENELEC questionnaire and vote and was approved as ENV50235on1996-07-02. The following date was fixed: Contents Page Foreword 2 1 Scope, object and fundame
17、ntal principles 3 2 Normative references 3 3 Definitions 3 3.1 ICAO 3 3.2 Taxiway (T 11) 3 3.3 Movement area (M 41) 3 3.4 Manoeuvring area (M 4) 3 3.5 Apron (A 119) 3 3.6 Taxiing guidance signs 3 3.7 Mandatory instruction sign 3 3.8 Information sign 4 3.9 Luminaire 4 3.10 Frangibility (F 36) 4 3.11
18、Rated current 4 3.12 Optical component 4 3.13 Routine test 4 3.14 MTBF Mean time between failures 4 3.15 MRT Mean repair time 4 3.16 Repair time 4 3.17 Useful life 4 4 Classification and designation 4 4.1 Classification according to service conditions 4 4.2 Classification according to operational us
19、e 4 4.3 Classification according to electrical supply 5 4.4 Markings 5 5 General requirements 5 5.1 Components of signs 5 Page 5.2 Service conditions 5 6 Performance requirements 6 6.1 Photometric requirements 6 6.2 Electromagnetic compatibility 6 6.3 Dependability 6 6.4 Integrity 6 7 Design and con
20、struction 6 7.1 General requirements 6 7.2 Mechanical strength 7 7.3 Protection against electric shock 7 7.4 Protection against ingress of dust, solid objects and moisture 7 7.5 Insulation resistance and electric strength 7 7.6 External and internal wiring 7 7.7 Provision for earthing 7 7.8 Sign fac
21、es 7 7.9 Drain holes 8 7.10 Fastenings and covers 8 7.11 External finish 8 7.12 Replaceable components 8 7.13 Optical components and lampholders 8 7.14 Ballasts (or lamp control gear) 8 7.15 Electric converters 8 8 Tests 8 8.1 Type tests 8 8.2 Routine tests 10 Figure 1 Means of calculating average l
22、uminance of a sign background 10 Table 1 Sign dimensions 5 Table 2 Test sequence 9 latest date by which the existence of the ENV has to be announced at national level (doa) 1996-12-01ENV50235:1997 BSI 05-1999 3 1 Scope, object and fundamental principles This standard covers signs installed in the mo
23、vement area to provide pilots and vehicle operators with information. The Standard is applicable to signs with built-in illumination arrangements using tungsten filament, tubular flourescent and other discharge lamps on supply voltages not exceeding1000V. The standard shall not apply to non-illumina
24、ted signs or signs illuminated by external light sources. The object is to provide design and construction specifications for the signs that are considered necessary to meet the operational standards adopted by ICAO and to cover all aspects of safety (electrical, thermal and mechanical). The signs m
25、ay be energised from parallel power supply or by connection to a constant current series circuit used for taxiway or runway lighting systems. 2 Normative references This prestandard incorporates by dated or undated reference, provisions from other publications. These normative references are cited a
26、t the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this prestandard only when incorporated in it by amendment or revision. For undated references the latest edition of the p
27、ublication referred to applies. prEN 356, Glass in building. Security glazing. Testing and classification of resistance against manual attack. EN 50081-2, Electromagnetic compatibility Generic emission standard Part 2: Industrial environment. EN 50082-2, Electromagnetic compatibility Generic immunit
28、y standard Part 2: Industrial environment. ENV 50232, Aviation ground lighting electrical installation Isolating transformer: Equipment specifications and tests. IEC 50(191), International Electrotechnical Vocabulary Chapter191: Dependability and quality of service. EN 60598-1, Luminaires Part 1: Ge
29、neral requirements and tests. EN 60920, Ballasts for tubular flourescent lamps General and safety requirements. EN 60924, DC supplied electronic ballasts for tubular flourescent lamps General and safety requirements. EN 60928, AC supplied electronic ballasts for tubular flourescent lamps General and
30、 safety requirements. ICAO, International standards and recommended practices Aerodromes Annex14to the Convention on International Civil Aviation, Volume1and2, Aerodrome Design and Operations (Issued by International Civil Aviation Organisation). 3 Definitions For the purpose of this prestandard the
31、 following definitions apply, as well as those given in EN60598-1. For definitions taken from Annex14to the Convention on International Civil Aviation, Volume1, Aerodrome Design and Operations, ICAOreference numbers have been added (refers to ICAO Doc9569). 3.1 ICAO International Civil Aviation Orga
32、nisation 3.2 taxiway (T11) a defined path on a land aerodrome established for the taxiing of aircraft and intended to provide a link between one part of the aerodrome and another 3.3 movement area (M 41) that part of an aerodrome to be used for take-off, landing and taxiing of aircraft, consisting o
33、f the manoeuvring area and the apron(s) 3.4 manoeuvring area (M 4) the movement area, excluding aprons 3.5 apron (A 119) a defined area, on a land aerodrome, intended to accommodate aircraft for the purposes of loading or unloading passengers, mail or cargo, fuelling, parking or maintenance 3.6 taxi
34、ing guidance signs guidance signs installed on an aerodrome to provide pilots and vehicle drivers with information. The signs are classified as Mandatory Instruction Signs and Information Signs 3.7 mandatory instruction sign a mandatory instruction sign is provided when it is intended to identify, b
35、y a sign, a location beyond which an aircraft or vehicle shall not proceed unless authorised by air traffic controlENV50235:1997 4 BSI 05-1999 3.8 information sign an information sign is provided when it is intended to indicate, by a sign, a specific location, or routing information 3.9 luminaire ap
36、paratus which distributes, filters or transforms the light transmitted from one or more lamps and which includes all the parts necessary for supporting, fixing and protecting the lamps, but not the lamps themselves, and where necessary circuit auxiliaries together with the means for connecting them
37、to the supply NOTEThis definition is given in EN60598-1but is repeated here for the purpose of clarity and since taxiing guidance signs may in several aspects be regarded as luminaires. 3.10 frangibility (F 36) an object of low mass designed to break, distort or yield on impact so as to present the
38、minimum hazard to aircraft 3.11 rated current the supply current assigned to the sign by the manufacturer 3.12 optical component any item used for controlling the light from a light source by means of reflection, refraction, absorption or transmission 3.13 routine test a test to which each individua
39、l sign is subjected 3.14 MTBF Mean Time Between Failures the expectation of operating time between failures 3.15 MRT Mean repair Time the expectation of the repair time 3.16 repair time that part of the active corrective maintenance time during which repair actions are performed on an item 3.17 usef
40、ul life under given conditions, the time interval beginning at a given instant of time, and ending at when the failure rate becomes unacceptable or when the item is considered unrepairable as a result of a fault 4 Classification and designation Signs are classified according to service conditions, o
41、perational use, and methods for electrical supply. 4.1 Classification according to service conditions The signs shall be designed for continuous outdoor use under specified service conditions. Type 1 signs are designed for operation down to20C. Type 2 signs are designed for operation down to55C. 4.1
42、.1 Signs designed for normal service conditions 4.1.2 Signs with provisions for unusual service conditions 4.2 Classification according to operational use Classification according to operational use is based on standards and recommended practices published in Annex14to the Convention on Internationa
43、l Civil Aviation. 4.2.1 Mandatory instruction signs Mandatory instruction signs shall have the following characteristics: Mandatory instruction signs shall have a face with a red background and white lettering. The legend height shall be either400mm or300mm depending on the operational use. 4.2.2 In
44、formation signs Information signs shall have the following characteristics: a) Location signs shall have a black face with a surrounding yellow border and with yellow lettering. The minimum legend height shall be either200mm or300mm depending of the operational use. b) Other information signs shall
45、have a yellow face with a black lettering. The minimum legend height shall be200mm, 300mm or400mm depending on the operational use. A minimum legend height of400mm is required for runway exit signs. 4.2.3 Sign dimensions The dimensions of signs shall be in accordance with Table 1. Sign lengths shall
46、 be sufficient to include the complete message including a boarder of background colour of at least half legend height.ENV50235:1997 BSI 05-1999 5 Table 1 Sign dimensions 4.3 Classification according to electrical supply 4.3.1 Signs energised from a parallel circuit Signs designed for direct supply
47、from a low voltage switchgear. 4.3.2 Signs energised by connection to a constant current series circuit The sign shall be connected to an isolation transformer, conforming to ENV50232. This isolation transformer shall be installed outside the sign and is normally not supplied with the sign. 4.4 Mark
48、ings The following information shall be distinctly and durably marked on the sign in a position where it can be seen during maintenance, if necessary after removal of covers or similar components. Such information shall not be marked on parts likely to be removed when the sign is being installed. Ma
49、rk of origin (this may take the form of a trade mark, manufacturers identification mark or the name of the responsible vendor). Makers model number or type reference. Rated voltage(s) in volts. Rated current in ampere (on signs intended to be connected to a constant current series circuit). Type and ratings of the light source. The identification number of this standard as a declaration of compliance. The EC Conformity Mark completed by the year of affixing. NOTEThe EC Conformity Mark is a declaration of compliance
