1、BRITISH STANDARD BS 3224-4: 1988 Lighting fittings for civil land aerodromes Part 4: Specification for elevated lighting units UDC 628.94:656.71BS3224-4:1988 This British Standard, having been prepared under the directionof the Electrical Illumination Standards Committee, was published underthe auth
2、ority of the Board ofBSI and comes into effect on 30September 1988 BSI 07-1999 The following BSI references relate to the work on this standard: Committee reference LGL/4 Draft for comment 85/27353 DC ISBN 0 580 16701 1 Committees responsible for this British Standard The preparation of this British
3、 Standard was entrusted by the Electrical Illumination Standards Committee (LGL/-) to Technical Committee LGL/4, upon which the following bodies were represented: Aerodrome Owners Association Association of Metropolitan Authorities British Air Line Pilots Association British Airports Authority Chart
4、ered Institution of Building Services Engineers Civil Aviation Authority Department of the Environment (Property Services Agency) Institution of Lighting Engineers Joint Airports Committee of Local Authorities Lighting Industry Federation Ltd. Ministry of Defence Amendments issued since publication
5、Amd. No. Date of issue CommentsBS3224-4:1988 BSI 07-1999 i Contents Page Committees responsible Inside front cover Foreword ii 1 Scope 1 2 Definition 1 3 General test requirements 1 4 Conditions of use 1 5 Optical components and lampholders 1 6 Fastening of covers 1 7 Mounting 1 8 Electrical connect
6、ions 2 9 Resistance to heat 2 10 Resistance to ingress of dust and moisture 2 11 Insulation 2 12 Beam alignment 2 13 Photometric performance 2 14 External finish 3 15 Marking 3 Table 1 Sequence of tests 1 Publications referred to Inside back coverBS3224-4:1988 ii BSI 07-1999 Foreword This Part of BS
7、3224 has been prepared under the direction of the Electrical Illumination Standards Committee. It is the fourth Part of a complete revision of BS3224. This Part of BS3224 supersedes SectionB1:1970, SectionD1:1960, SectionD2:1961, SectionD6:1961, SectionD7:1961 and SectionF1:1968 of BS3224, which are
8、 withdrawn. Other Parts of this revision are: Part 1: Specification for lighting units for use in precision approach path indicator systems; Part 5: Specification for inset lighting units; Part 6: Specification for obstacle lighting units. Requirements for the light distributions are not included in
9、 this edition. Attention is drawn particularly to the recommendations and requirements for installation and operation, and for light distribution, that are given in Annex14 to the Convention on International Civil Aviation and the Aerodrome Design Manual, Part4: Visual Ground Aids, both published by
10、 the International Civil Aviation Organization, and to Civil Air Publication168, Licensing of Aerodromes, published by the Civil Aviation Authority. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct
11、 application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages1 to 4, an inside back cover and a back cover. This standard has been updated (see copyright
12、 date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.BS3224-4:1988 BSI 07-1999 1 1 Scope This Part of BS3224 specifies the essential mechanical and electrical features, excluding lamps and describes photometric tests for elevated li
13、ghting units providing lighting guidance for approach, runway and taxiway lighting at land aerodromes. Light distributions are not specified within this Part of BS3224 (seethe publications referred to in the foreword). NOTEThe titles of the publications referred to in this standard are listed on the
14、 inside back cover. 2 Definition For the purposes of this Part of BS3224 the following definition applies. type test a test for the purpose of checking compliance of the design of a given product with the requirements of the relevant specification. Type test samples are selected in agreement with th
15、e manufacturer or responsible vendor 3 General test requirements 3.1 The tests described in this standard shall be type tests (seeclause 2). 3.2 Except where otherwise specified, units shall be tested in an ambient temperature of between10 C and30 C. The units shall be tested as installed in normal
16、use. The lamp type recommended by the manufacturer shall be used for the test. Tests shall be made on a single sample unit or, where a range of similar units is involved, on a single unit of each rated wattage in the range or on a representative selection from the range as agreed with the manufactur
17、er. This selection shall include the unit, together with any attachments, which represents the most unfavourable combination from a testing point of view. Each sample unit shall pass all the relevant tests. Tests shall be carried out in the order given in Table 1. Table 1 Sequence of tests 4 Conditi
18、ons of use The unit shall be designed for use on supply voltages not greater than50Vr.m.s. to earth. NOTE 1The unit should be suitable for use, when mounted close to the ground on short spigots, poles, or other fixed or portable structures, in a range of ambient temperatures from 20 C to+50 C and re
19、lative humidities up to90%. NOTE 2Due allowance should be made for the effects of solar heating, jet efflux, vibration, blown dust and sand, heavy rain, ice, snow, fuels, oils and de-icing agents. NOTE 3The unit should be designed so that if struck by an aircraft the minimum possible damage to the a
20、ircraft is caused. 5 Optical components and lampholders Lampholders shall be of such design that the lamp cannot be inserted incorrectly in the unit and that once inserted the lamp is retained firmly in position. The making of connections between lamp and holder shall not require the use of a tool e
21、xcept when necessary for the prevention of finger-marking of the lamp envelope. NOTEAll optical components should be easily replaceable and should be designed or marked so as to inhibit incorrect assembly. 6 Fastening of covers Covers that are required to be opened or removed for maintenance purpose
22、s, e.g.lamp changing, shall be secured by fastenings that may be operated without the use of tools made specifically for the purpose. These fastenings shall be captive. Any gaskets shall be located either on the body of the unit or on any removable covers. 7 Mounting 7.1 Mounting arrangement The uni
23、t shall be designed for vertical mounting. The unit shall have a stem of either 25mm outside diameter plain, or32mm threaded in accordance with BS6053, over a minimum distance of50mm, or alternatively, a socket to accept a25mm diameter 30mm long plain cylindrical spigot should be provided. Complianc
24、e shall be checked by inspection. 7.2 Strength 7.2.1 Requirement. When tested in accordance with Table 1, clause 3 and 7.2.2 the unit shall not exhibit any failure, any movement at the point of attachment, or any deflection exceeding1 for the duration of the test. Order of tests Property under test
25、Clause reference 1 Mounting 7.2.2 2 Frangibility 7.3.2 3 Resistance to heat 9.2 4 Resistance to ingress of dust and moisture 10 5 Insulation 11.2 6 Beam alignment 12 7 Photometric performance 13.2BS3224-4:1988 2 BSI 07-1999 7.2.2 Test. Fix the unit by the method recommended by the manufacturer to a
26、rigid mounting with its maximum projected area lying in a horizontal plane. Apply a distributed load of2.4kN/m 2for a period of10min, preferably by means of sandbags. Repeat the test with the unit rotated180 about the axis of its mounting. 7.3 Frangibility 7.3.1 Requirement. When a weakened section
27、is built into the unit for frangibility purposes the average value of the bending moment required to rupture the weakened section shall be not less than68Nm and not more than275Nm when tested in accordance with Table 1, clause3 and7.3.2. 7.3.2 Test. Test six samples of the weakened section for the b
28、ending moment required to rupture the weakened section of the stem at the break-off point. 8 Electrical connections 8.1 Provision shall be made to accommodate the entry of an insulated and sheathed cable with an overall diameter of between8mm and13mm. 8.2 Means shall be provided for the clamping of
29、the cable so as to prevent any strain and twisting of the conductors connected to the terminations. 9 Resistance to heat 9.1 Requirement When the unit is tested in accordance with Table 1, clause 3 and 9.2 the external parts of insulating material and parts of insulating material retaining live part
30、s in position shall exhibit no deterioration or permanent deformation and there shall be no deterioration or permanent deformation of other parts. The lamp temperatures during the test shall not exceed the designed temperature limits for the lamp type in use. 9.2 Test Operate the unit using the lamp
31、s recommended at rated wattage in an ambient temperature of50 2 C for a period of24h. Measure the lamp temperature after a period of at least2h from the start of the test. 10 Resistance to ingress of dust and moisture The unit shall provide a minimum index of protection of IP54 when tested in accord
32、ance with Table 1, clause3 and BS4533-101. After testing, the unit shall show no accumulation of dust or water on the internal optical surfaces or electrical connections and covers shall show no signs of cracking or other failure. 11 Insulation 11.1 Requirement When tested in accordance with Table 1
33、, clause3 and 11.2 the insulation resistance of the unit shall be not less than 0.1M7 at a voltage of500Vd.c. NOTECompliance will require the use of non-hygroscopic insulation materials capable of withstanding the operating conditions given in clause4. 11.2 Test Immediately after completion of the t
34、ests described in clauses9 and10, measure the insulation resistance with the lamps removed between the opposite poles of the lamp circuit and between each pole and the body of the unit at a voltage of500Vd.c. Where a lamp filament failure cut-out device is connected, make the measurement between bot
35、h poles connected together and the body of the unit. 12 Beam alignment If the unit has an adjustment for beam alignment, it shall be capable of being aligned to an accuracy of within 0.5 using a suitable sighting device. NOTEAlignment should be capable of being carried out by simple means. 13 Photom
36、etric performance 13.1 Requirements 13.1.1 When tested in accordance with Table 1, clause3 and 13.2 the unit shall comply with 13.1.2 and 13.1.3. NOTEAttention is drawn to the publications referred to in the foreword. 13.1.2 The beam shall have a fixed focus. NOTEIt should not be possible inadverten
37、tly to alter the setting during installation or maintenance. 13.1.3 The unit shall be designed to emit white light and shall also be adaptable to emit blue, green, red or yellow light. The chromaticity of the light emitted shall be of signal class A complying with BS1376. NOTEThe colour media should
38、 not show any deformation or deterioration when the unit is operated for a minimum of2000h at an ambient temperature of50 2 C at the maximum light output.BS3224-4:1988 BSI 07-1999 3 13.2 Tests Test the unit for compliance with 13.1 using the recommended lamps and correlate the results to the manufac
39、turers published data for the lamp type. 14 External finish The visible external surface of the body or cover of the unit shall have a finish applied in accordance with the manufacturers instructions. NOTE 1The finish should be of golden yellow, colour No.356 complying with BS381C. NOTE 2All parts o
40、f the unit should have a surface finish suitable to resist corrosion due to the effects of the conditions listed in clause4. 15 Marking The unit shall be durably and legibly marked with the following: a) the manufacturers name or identification mark; b) the type or reference number; c) the number an
41、d date of this British Standard, i.e. BS3224-4:1988 1) . 1) Marking BS3224-4:1988 on or in relation to a product represents the manufacturers declaration of conformity, i.e. a claim by or on behalf of the manufacturer that the product meets the requirements of the standard. The accuracy of the claim
42、 is therefore solely the responsibility of the person making the claim. Such a declaration is not to be confused with third party certification of conformity, which may also be desirable.4 blankBS3224-4:1988 BSI 07-1999 Publications referred to BS 381C, Specification for colours for identification,
43、coding and special purposes. BS 1376, Specification for colours of light signals. BS 4533, Luminaires. BS 4533-101, Specification for general requirements and tests. BS 6053, Specification for outside diameters of conduits for electrical installations and threads for conduits and fittings. Aerodrome
44、 Design Manual, Part 4: Visual Ground Aids. International Civil Aviation Organization,1000Sherbrooke Street West, Montreal, Quebec H3A 2R2, Canada 2) . Civil Air Publication 168, Licensing of Aerodromes. Civil Aviation Authority, Aviation House, 129 Kingsway, London WC2B 6NN 2) . 2) Referred to in t
45、he foreword only.BS 3224-4: 1988 BSI 389 Chiswick High Road London W4 4AL BSIBritishStandardsInstitution BSI is the independent national body responsible for preparing BritishStandards. It presents the UK view on standards in Europe and at the international level. It is incorporated by Royal Charter
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