1、DRAFT FOR DEVELOPMENT DD ENV 50234:1997 Aeronautical ground lighting electrical installation Flashinglights: Equipment specifications and tests ICS 93.120DDENV50234:1997 This Draft for Development, having been prepared under the direction of the Electrotechnical Sector Board, was published under the
2、 authority of the Standards Board and comes into effect on 15 September 1997 BSI 04-1999 ISBN 0 580 27797 6 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
3、 is an interim draft. A revised version of this document is being produced by IEC/TC 97. 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
4、UK experience can be reported to the European organization responsible for its conversion into a European Standard. A review of this publication will be initiated 2 years after its publication by the European organization so that a decision can be taken on its status at the end of its three-year lif
5、e. The commencement of the review period will be notified by an announcement inUpdate 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 prestand
6、ard or to withdraw it. Comments should be sent in writing to the Secretary of BSI Technical Committee EPL/97, Lighting and beaconing of aerodromes, at 389 Chiswick High Road, London W4 4AL, giving the document reference and clause number and proposing, where possible, an appropriate revision of the
7、text. Cross-references 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 r
8、eferred to in this 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,
9、 pagesi andii, theENV title page, pages2 to12 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 CommentsDDENV50234:
10、1997 BSI 04-1999 i Contents Page National foreword Inside front cover Foreword 2 Text of ENV 50234 3ii blankEUROPEAN PRESTANDARD PRNORME EUROPENNE EUROPISCHE VORNORM ENV 50234 February 1997 ICS 93.120 Descriptors: Electrical installation, lighting, aerodrome, flashing light, characteristics, classif
11、ication, test, compatibility, maintainability English version Aeronautical ground lighting electrical installation Flashing lights: Equipment specifications and tests This European Prestandard (ENV) was approved by CENELEC on 1996-07-02 as a prospective standard for provisional application. The peri
12、od of validity of this 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 th
13、is ENV in the same way 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. CEN
14、ELEC members are the national electrotechnical committees of Austria, Belgium, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. CENELEC European Committee for Electrotechnical Standardization
15、 Comit Europen de Normalisation 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 50234:1997 EENV50234:19
16、97 BSI 04-1999 2 Foreword 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 ENV50234 on 1996-07-02. The following date was fixed: Contents Page Foreword 2 1 S
17、cope 3 2 Normative references 3 3 Definitions 3 3.1 Flashing light system 3 3.2 Flashing light 3 4 Assessment of general characteristics 3 4.1 General test requirements 3 4.2 Components of the system 4 4.3 Fundamental principles 4 4.4 Purpose, supplies and structure 4 4.5 Classification of external
18、influences 5 4.6 Compatibility 6 4.7 Maintainability 6 4.8 Safety services 6 4.9 Environmental protection 6 5 Protection for safety 7 5.1 Protection against electric shock 7 5.2 Protection against thermal effects 7 5.3 Protection against overcurrent 7 5.4 Protection against over and under voltage 7
19、5.5 Isolation and switching 7 5.6 Electro-magnetic compatibility 7 6 Selection and erection of equipment 8 6.1 Common rules 8 6.2 Wiring system 8 6.3 Switchgear and control gear 8 6.4 Earthing arrangements and protective conductor 9 6.5 Safety devices 9 7 Inspection and testing 9 7.1 Operation and r
20、eliability tests 9 7.2 Equipment tests 10 Annex A (informative) Proposal of flashing light measurement 11 Table 1 9 latest date by which the existence of the ENV has to be announced at national level (doa) 1996-12-01ENV50234:1997 BSI 04-1999 3 1 Scope This prestandard specifies general requirements
21、for classification of flashing light systems used on airports or for ground based aviation lighting systems, for the luminaries, for the control cabinets and for their mechanical and electrical construction erection, together with the related tests. This prestandard is applicable to flashing light s
22、ystems used for: Sequential flashing approach lighting systems; Runway threshold identification lights; Runway lead-in lighting systems; Medium and high intensity obstruction lighting systems. Alternately flashing lights used as runway guard lights are excluded from this prestandard. Attention is dr
23、awn to the fact that this prestandard covers all aspects of safety (electrical, thermal and mechanical). The purpose of this prestandard is to provide a set of requirements and tests which are applicable to the luminaries and their control equipment. In general, this prestandard covers safety requir
24、ements for all components of the system. 2 Normative references This prestandard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references,
25、 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 publication referred to applies. EN 50081-2, Electromagnetic compatibility Generic emission standard P
26、art 2: Industrial environment. EN 50082-2, Electromagnetic compatibility Generic immunity standard Part 2: Industrial environment. EN 55015, Limits and methods of measurement of radio disturbance characteristics of electrical lighting and similar equipment. EN 60204, Safety of machinery Electrical e
27、quipment of machines. EN 60529, Degrees of protection provided by enclosures (Code IP) (IEC 529). EN 60598-1, Luminaires Part 1: General requirements and tests. EN 60742, Isolating transformers and safety isolating transformers Requirements. EN 60950, Safety of information technology equipment, incl
28、uding electrical business equipment. EN 60984, Sleeves of insulating material for live working. EN 61000-3-2, Electromagnetic compatibility (EMC) Part 3: Limits Section 2: Limits for harmonic current emissions (equipment input current up to and including 16 A per phase). EN 61000-3-3, Section 3: Lim
29、itation of voltage fluctuations and flicker in low-voltage supply systems for equipment with rated current up to 16 A. EN 61547, Equipment for general lighting purposes EMC immunity requirements. HD 384, Electrical installations of buildings. ICAO, International standards and recommended practices A
30、erodromes Annex 14 to the Convention on International Civil Aviation, Volume 1 and 2, Aerodrome Design and Operations (Issued by International Civil Aviation Organisation). 3 Definitions For the purposes of this prestandard the following definitions apply, as well as those given in ICAO Annex14 and
31、HD384, EN60598-1 and EN60950. Where the terms voltage and current are used, they imply true RMS values unless otherwise stated. 3.1 flashing light system system including one or several flashing lights together with their electrical wiring used as an aid either during en route phase and during the a
32、pproach to an airport 3.2 flashing light luminaire including its control cabinet and part of a flashing light system 4 Assessment of general characteristics 4.1 General test requirements 4.1.1 Tests according to this prestandard are type tests 4.1.2 Unless otherwise stated, luminaries and their asso
33、ciated control equipment shall be tested at ambient temperature (between 10C and 30C). Each flashing light submitted to the test shall be tested “as delivered” and as installed in normal use, including one lamp.ENV50234:1997 4 BSI 04-1999 Each sample shall satisfy all the relevant tests. In order to
34、 reduce the time of testing and to allow for any test which may be destructive, the manufacturer may submit additional components provided that these are of the same material and design as the one used in the original equipment and that the results of tests are the same as if carried out on an ident
35、ical piece of equipment. Where the test for compliance is shown as being “by inspection” this shall include any necessary handling. 4.2 Components of the system Components complying with the requirements of the relevant Europeen standards for those components and not requiting additional protection
36、shall not be subjected to further testing or appraisal as part of the equipment. Those components which rely upon the construction of the equipment for electrical and mechanical safety shall be tested in accordance with the relevant clause of this prestandard. 4.3 Fundamental principles Flashing lig
37、ht systems are used on airports. One or several lights are installed to form one system. All lights of one system are emitting short duration light flashes of equal light intensity to guide an approaching pilot to the runway or to mark a hazard to air traffic. Every light of a system flashes at give
38、n intervals eventually at a given time in a sequence. The control cabinets are powered by a single or three phases mains network, generally230/400V AC,50 or 60Hz or by series circuits in6,6 A. They are remotely controlled and have the ability to operate, in many cases at three levels of energy. They
39、 do also provide back indication signals to a remote monitoring system. They provide some form of energy storage in order to keep the variation of power supply current below 150% of the average value. 4.4 Purpose, supplies and structure 4.4.1 Purpose Flashing light systems are used for: sequential f
40、lashing approach lighting systems; threshold identification; lead-in lighting systems; medium and high intensity obstruction lighting systems. 4.4.1.1 Sequential flashing approach lighting systems Such systems consist of a row of lights installed along the extended runway centre line at regular inte
41、rvals of 30m, at the location of the steady burning approach light barrettes. The steady burning lights shall not obstruct the visibility of the flashing lights, and vice versa. Each light consists of one luminaire including a discharge lamp and its triggering or starting device, connected via a spe
42、cial cabling to a control cabinet. These individual control cabinets are connected together and to a central or master control device serving as interface between the system and the mains and control/monitoring lines. A control system shall ensure the correct firing sequence (timing) of every light
43、and the brightness or energy level control. A monitoring system shall give information on the status of the system, brightness level and correct or faulty operation of one or several light units. 4.4.1.2 Threshold identification A threshold identification lighting system shall consist of two lights
44、installed in line with the threshold and symmetrically about the runway centre line at approximately 10m outside each line of runway edge lights. These two lights shall be flashing in synchronism at a frequency of one or two flashes per second. For operational reasons an interlock between the two co
45、ntrol cabinets shall ensure that both units are operating. Should one of the fittings fail, the other one shall stop flashing to avoid a misleading information to the pilot. In some cases, the threshold identification lighting system is installed at the end of an approach lighting system equipped wi
46、th sequential flashing lights. In such case, the operation of the threshold identification lights shall be synchronized with the approach flashing lights to form a complete system. 4.4.1.3 Lead-in lighting systems Lead-in lighting systems are used to indicate the pilot of an approaching aircraft the
47、 route to follow to reach the approach to the runway. This system is only used when a curved route is mandatory to avoid obstacles located on the extended runway centre line. The lights used are the same as those used for a sequential approach lighting system. They are installed by groups of lights
48、spaced at 60m, separated by a large space which can extend over approx. 1600m.ENV50234:1997 BSI 04-1999 5 All the lights shall be synchronized and fixed in a way to show the pilot the correct route to follow the reach the prestandard approach lighting system to which the sequence shall be synchroniz
49、ed in case it is equipped with a sequential flashing approach lighting system. A case by case custom design is necessary for this system. 4.4.1.4 Medium or high intensity obstruction lighting system Where it is imposed by the ICAO Annex 14 to install medium or high intensity lighting systems, the lights used may be flashing obstruction lights. The performance of the lights and light colour, either white or red, shall be as defined in the ICAO Annex 14. 4.4.1.5 Heliport beacons Condenser discharge lights may also be used as heliport
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