1、DRAFT FOR DEVELOPMENT DD ENV 50231:1997 Aeronautical ground lighting electrical installation Constant current regulator: Equipment specifications and tests ICS 93.120DDENV50231:1997 This Draft for Development, having been prepared under the direction of the Electrotechnical Sector Board, was publish
2、ed underthe authority of the Standards Board and comes intoeffect on 15 September 1997 BSI 03-1999 ISBN 0 580 27799 2 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
3、because it 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 requeste
4、d so that 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 thre
5、e-year life. The commencement 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 intoa European Standard, to extend the life of th
6、e prestandard 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 revisi
7、on of the 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 publ
8、ications referred 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 fr
9、ont cover, pages i and ii, theENV title page, pages 2 to 13 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 Comme
10、ntsDDENV50231:1997 BSI 03-1999 i Contents Page National foreword Inside front cover Foreword 2 Text of ENV 50231 3ii blankEUROPEAN PRESTANDARD PRNORME EUROPENNE EUROPISCHE VORNORM ENV 50231 February 1997 ICS 93.120 Descriptors: Electrical installation, lighting, aerodrome, regulator, specification,
11、designation, classification, test, marking English version Aeronautical ground lighting electrical installation Constant current regulator: Equipment specifications and tests This European Prestandard (ENV) was approved by CENELEC on 1996-07-02 as a prospective standard for provisional application.
12、The period 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 existen
13、ce of this 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 reac
14、hed. CENELEC 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 Standar
15、dization 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 50231:1997 EENV
16、50231:1997 BSI 03-1999 2 Foreword This European Prestandard was prepared by the CENELEC BTTF 72-3, Lighting fittings for aerodromes. The text of the draft was submitted to the CENELEC questionnaire and vote and was approved as ENV50231 on 1996-07-02. The following date was fixed: Contents Page Forew
17、ord 2 Introduction 3 1 Scope 3 2 Normative references 3 3 Definitions, symbols and abbreviations 3 3.1 Definitions 3 3.2 Symbols and abbreviations 4 4 General requirements 4 4.1 General characteristics 4 4.2 Operating conditions 4 4.3 Power transformer 4 4.4 Regulation 4 4.5 Efficiency 4 4.6 Power f
18、actor 5 4.7 Load matching 5 4.8 Remote control system 5 4.9 Control response and output current limitation 6 4.10 Circuit isolation 6 4.11 Wiring and connections 6 4.12 Protective devices 6 4.13 Electromagnetic compatibility 7 4.14 Temporary losses of power source 7 4.15 Control and monitoring panel
19、 7 4.16 Design and construction: HV/LV separation Safety 8 4.17 Optional auxiliaries 8 5 Type and production tests 8 5.1 Safety prescription 8 5.2 Type tests 9 5.3 Routine production tests 9 5.4 Requalification tests 9 Page 6 Tests description 9 6.1 Type tests 9 6.2 Ambient temperature tests 9 6.3 E
20、nvironmental tests 12 6.4 Requalification test description 13 6.5 Routine production tests 13 7 Classification and designation 13 7.1 Classification 13 7.2 Marking, labelling, packaging 13 7.3 Manual 13 Table 1 For 5 steps CCR 4 Table 2 Example for 6 brillancies 5 Table 3 Lightning arresters 7 Table
21、 4 11 Table 5 11 Table 6 13 latest date by which the existence of the ENV has to be announced at national level (doa) 1996-12-01ENV50231:1997 BSI 03-1999 3 Introduction This prestandard concerns Constant Current Regulator (CCR) used to supply airport lighting luminaires, installed to give pilots vis
22、ual cues during landing, take off and taxiing. These lights are not used to light any ground surface, but shall provide some references to pilots. The light intensity of each cue shall be adjusted with a good accuracy. This fact is obtained by ICAO requirements for isocandela diagrams of each type o
23、f source and by monitoring the current by a Constant Current Regulator. The earth fault indicator is maintained in this Constant Current Regulator prestandard. In the future, the relevant clause should be included in installation and maintenance specifications under consideration. 1 Scope This prest
24、andard covers constant current regulators used in series circuits of aviation ground lighting installations. This prestandard is applicable to constant current regulator assemblies, including control and monitoring devices, used for supply of a constant current to series connected light sources in a
25、irfield lighting systems. The Constant Current Regulator is designed to produce a constant current output independent of variations in the circuit load or, in some limits, of variations in the input voltage to the Constant Current Regulator. The object is to provide equipment specifications and test
26、s for constant current regulators used on airport that are considered necessary to meet the operational standards adopted by ICAO and to cover all aspects of safety (electrical, thermal and mechanical). This prestandard is in accordance with ICAO Annex 14. Any new operational need for Air Navigation
27、 Safety purposes could change some data or principles issued in this prestandard. 2 Normative references This European prestandard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at appropriate places in the text and the publicatio
28、ns are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications apply to this European Standard only when incorporated in it by amendment or revision. For undated references the latest edition of the publication referred to applies. EN 50081-2, Elect
29、romagnetic compatibility Generic emission standard Part 2: Industrial environment. EN 50082-2, Electromagnetic compatibility Generic immunity standard Part 2: Industrial environment. ENV 50232, Aviation ground lighting electrical installation Isolating transformer: Equipment specifications and tests
30、. EN 60204, Safety of machinery Electrical equipment of machines. EN 60240, Characteristics of electrical infra-red emitters for industrial heating. EN 60529, Degrees of protection provided by enclosures (Code IP). EN 60947-2, Low-voltage switchgear and controlgear Part 2: Circuit breakers. EN 60950
31、, Safety of information technology equipment, including electrical business equipment. HD 398, Power transformers (IEC 76, modified). HD 472 S1, Nominal voltages for low voltage public electricity supply systems (IEC 38, modified). HD 553 S2, Current transformers (IEC 185, modified). ICAO, Internati
32、onal standards and recommended practices Aerodromes Annex 14 to the Convention on International Civil Aviation, Volume 1 and 2, Aerodrome Design and Operations (Issued by International Civil Aviation Organisation). ISO 9001, Quality systems Model for quality assurance in design, development, product
33、ion, installation and servicing. 3 Definitions, symbols and abbreviations For the purposes of this prestandard the following definitions apply, as well as those given in ICAO Annex 14. 3.1 Definitions 3.1.1 constant current regulator able to supply with a constant current, a serial loop built with a
34、irfield lighting luminaires, each of them very often supplied through an isolating transformer 3.1.2 constant current constant as specified in this prestandard that no significant change could be noticed by an observerENV50231:1997 4 BSI 03-1999 3.2 Symbols and abbreviations 4 General requirements 4
35、.1 General characteristics A CCR is designed to supply airport series lighting circuits with a constant current. The CCR shall be designed to produce a constant current output independent of variations in the circuit load or, in some limits, of variations in the input voltage to theCCR. The rated cu
36、rrent output by the CCR shall be 6,6 A. The CCR shall comprise at least 5 adjustable intensity levels between 2,8 A and 6,6 A. The standard power levels on the CCR secondary shall be: 2,5 kVA 5 kVA 7,5 kVA 10 kVA 12,5 kVA 15 kVA 20 kVA 25 kVA 30 kVA. The standard input voltage should be obtained bet
37、ween two lines of the local network voltage. The standard values are the following values as specified in HD472 S1:1989 and IEC38:1983: The frequency shall be one of the two following values: 50 Hz 2 Hz or 60 Hz 2 Hz 4.2 Operating conditions The equipment shall be designed to operate sheltered in th
38、e following conditions: a) temperature limits: from 20C to + 50C, b) Relative humidity of 95% or less, non-condensing. c) Altitude from 0m to 1000m, with the deratingcharacteristics according to clause9 ofHD553S2. 4.3 Power transformer This transformer shall comply with the requirements of HD398. Th
39、e two following types could be accepted: dry type cooled by natural air convection; oil immersed. The insulation requirements between primary and secondary, and between secondary and ground shall meet the requirements of following values: 4.4 Regulation The CCR shall be equipped with at least five a
40、djustable steps. The nominal outputs are listed in Table 1. 4.4.1 On resistive load The r.m.s. value of the output current shall be maintained within the limits1% for each setting, at any load between full load and short-circuit. The input voltage could vary from95% to 110% of the nominal input volt
41、age. The CCR shall accept a sudden load variation of up to 50% of the rated value, in which case the recovery to 1% accuracy shall be less than 0,25s. Table 1 For 5 steps CCR 4.4.2 On reactive load The limits of the regulation shall be met at nominal voltage, with a load connected via isolating tran
42、sformers. The percentage of secondaries of the transformers in open-circuit shall represented no more than 30% of the connected load. The load of the CCR before opening of the secondaries could be between50% and 100% of the nominal load. If more than 30% of the transformers are in open circuit, the
43、current shall not exceed 6,7 A. 4.5 Efficiency The efficiency of the CCR operating on a full resistive load shall not be less than 0,90for any CCR. It shall be measured at maximum intensity step for rated supply voltage and frequency. CCR: Constant current regulator In: nominal current LV: Low Volta
44、ge ELV: Extra Low Voltage HV: High Voltage Type I: Voltage test 3 000 V a.c. Type II: Voltage test 10 000 V a.c. Type III: Voltage test 20 000 V a.c. Steps Nominal Output (r.m.s.) Limits of minimal value Limits of maximal value A A A 5 6,6 6,53 6,67 4 5,2 5,14 5,26 3 4,1 4,05 4,15 2 3,4 3,35 3,45 1
45、2,8 2,75 2,85ENV50231:1997 BSI 03-1999 5 4.6 Power factor With a nominal resistive load and at maximum intensity step brightness, for rated supply voltage and frequency, the power factor of the CCR shall be at least 0,90for any CCR rating. 4.7 Load matching Regulators, rated 10kVA and more, shall ma
46、tch connected loads from rated load to approximately50 of the rated load. The following requirements shall be met: On resistive loads in the range from 75% to 100% of the nominal load, at rated supply voltage, current set at 6,6 A, the efficiency and the power factor shall be not less than the value
47、 specified above. If not, partial load taps shall be provided to allow a more precise adjustment. Load steps of a value close to 1/8 of the nominal load are considered to be satisfactory. 4.8 Remote control system The system shall be controlled remotely for any levels of output current by parallel w
48、iring or serial interfaces. The design of the remote control shall be such that the following inputs and outputs are available, given in Table 2: Table 2 Example for 6 brillancies Input Numbering Designation 1 Common 2 Request brilliancy 1 (maximum i.e. 6,6 A) 3 Request brilliancy 2 4 Request brilli
49、ancy 3 5 Request brilliancy 4 6 Request brilliancy 5 7 Request brilliancy 6 8 9 Output Numbering Designation 1 Common 2 Brilliancy 1 (maximum i.e. 6,6 A) request and obtained 3 Brilliancy 2 request and obtained 4 Brilliancy 3 request and obtained 5 Brilliancy 4 request and obtained 6 Brilliancy 5 request and obtained 7 Brilliancy 6 request and obtained 8 9 10 CCR in local mode 11 CCR on 12 Open circuit fault 13 Regulation fault 14 Overcurrent fault 15 CCR in remote mode Options 1 Common 2 Insulation of second
