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1、DRAFT FOR DEVELOPMENT DD ENV 50231:1997 Aeronautical ground lighting electrical installation Constant current regulator: Equipment specifications and tests ICS 93.120 Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 07:10:23 GMT+00:00 2006, Uncontrolled Copy, (c)
2、 BSI DD ENV 50231:1997 This Draft for Development, having been prepared under the direction of the Electrotechnical Sector Board, was published under the authority of the Standards Board and comes into effect on 15 September 1997 BSI 03-1999 ISBN 0 580 27799 2 National foreword This publication is n
3、ot 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 draft. A revised version of this document is being produced by IEC/TC 97. It should be applied on this provisional basis, so that in
4、formation 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 can be reported to the European organization responsible for its conversion into a European Standard. A review of this publication wi
5、ll 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 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 t
6、he 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 withdraw it. Comments should be sent in writing to the Secretary of BSI Technical Committee EPL/97, Lighting and beaconing of aerodromes
7、, at 389 Chiswick High Road, London W4 4AL, giving the document reference and clause number and proposing, where possible, an appropriate revision 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
8、 international publications with their corresponding European publications. The British Standards which implement international or European publications referred to in this document may be found in the BSI Standards Catalogue under the section entitled “International Standards Correspondence Index”,
9、 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, the ENV title page, pages 2 to 13 and a back cover. This standard has been updated (see copyright date) and may have had amendmen
10、ts incorporated. This will be indicated in the amendment table on the inside front cover. Amendments issued since publication Amd. No.DateComments Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 07:10:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI DD ENV 50231:19
11、97 BSI 03-1999i Contents Page National foreword Inside front cover Foreword2 Text of ENV 502313 Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 07:10:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ii blank Licensed Copy: London South Bank University, London South
12、 Bank University, Tue Dec 12 07:10:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI EUROPEAN PRESTANDARD PRNORME EUROPENNE EUROPISCHE VORNORM ENV 50231 February 1997 ICS 93.120 Descriptors: Electrical installation, lighting, aerodrome, regulator, specification, designation, classification, test, markin
13、g 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. The period of validity of this ENV is lim
14、ited 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 way as for an
15、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 national ele
16、ctrotechnical 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 Comit Europen de Normalisation E
17、lectrotechnique 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 E Licensed Copy: London South Bank University
18、, London South Bank University, Tue Dec 12 07:10:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ENV 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
19、 vote and was approved as ENV 50231 on 1996-07-02. The following date was fixed: Contents Page Foreword2 Introduction3 1Scope3 2Normative references3 3Definitions, symbols and abbreviations3 3.1Definitions3 3.2Symbols and abbreviations4 4General requirements4 4.1General characteristics4 4.2Operating
20、 conditions4 4.3Power transformer4 4.4Regulation4 4.5Efficiency4 4.6Power factor5 4.7Load matching5 4.8Remote control system5 4.9Control response and output current limitation6 4.10 Circuit isolation6 4.11 Wiring and connections6 4.12 Protective devices6 4.13 Electromagnetic compatibility7 4.14 Temp
21、orary losses of power source7 4.15 Control and monitoring panel7 4.16 Design and construction: HV/LV separation Safety8 4.17 Optional auxiliaries8 5Type and production tests8 5.1Safety prescription8 5.2Type tests9 5.3Routine production tests9 5.4Requalification tests9 Page 6Tests description9 6.1Typ
22、e tests9 6.2Ambient temperature tests9 6.3Environmental tests12 6.4Requalification test description13 6.5Routine production tests13 7Classification and designation13 7.1Classification13 7.2Marking, labelling, packaging13 7.3Manual13 Table 1 For 5 steps CCR4 Table 2 Example for 6 brillancies5 Table 3
23、 Lightning arresters7 Table 411 Table 511 Table 613 latest date by which the existence of the ENV has to be announced at national level(doa)1996-12-01 Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 07:10:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ENV 50231:1
24、997 BSI 03-19993 Introduction This prestandard concerns Constant Current Regulator (CCR) used to supply airport lighting luminaires, installed to give pilots visual cues during landing, take off and taxiing. These lights are not used to light any ground surface, but shall provide some references to
25、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 of source and by monitoring the current by a Constant Current Regulator. The earth fault indicator is maintained in this Constant Current Re
26、gulator prestandard. In the future, the relevant clause should be included in installation and maintenance specifications under consideration. 1 Scope This prestandard covers constant current regulators used in series circuits of aviation ground lighting installations. This prestandard is applicable
27、 to constant current regulator assemblies, including control and monitoring devices, used for supply of a constant current to series connected light sources in airfield lighting systems. The Constant Current Regulator is designed to produce a constant current output independent of variations in the
28、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 tests for constant current regulators used on airport that are considered necessary to meet the operational standards adopted by ICAO and to co
29、ver all aspects of safety (electrical, thermal and mechanical). This prestandard is in accordance with ICAO Annex 14. Any new operational need for Air Navigation Safety purposes could change some data or principles issued in this prestandard. 2 Normative references This European prestandard incorpor
30、ates by dated or undated reference, provisions from other publications. These normative references are cited at 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 European St
31、andard 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 Part 2: Industrial environment. EN 50082-2, Electromagnetic compatibility Generic immuni
32、ty standard Part 2: Industrial environment. ENV 50232, Aviation ground lighting electrical installation Isolating transformer: Equipment specifications and tests. EN 60204, Safety of machinery Electrical equipment of machines. EN 60240, Characteristics of electrical infra-red emitters for industrial
33、 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, Safety of information technology equipment, including electrical business equipment. HD 398, Power transformers (IEC 76, modified). HD 47
34、2 S1, Nominal voltages for low voltage public electricity supply systems (IEC 38, modified). HD 553 S2, Current transformers (IEC 185, modified). ICAO, International standards and recommended practices Aerodromes Annex 14 to the Convention on International Civil Aviation, Volume 1 and 2, Aerodrome D
35、esign and Operations (Issued by International Civil Aviation Organisation). ISO 9001, Quality systems Model for quality assurance in design, development, production, installation and servicing. 3 Definitions, symbols and abbreviations For the purposes of this prestandard the following definitions ap
36、ply, 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 airfield lighting luminaires, each of them very often supplied through an isolating transformer 3.1.2 constant current constant as specified
37、 in this prestandard that no significant change could be noticed by an observer Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 07:10:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ENV 50231:1997 4 BSI 03-1999 3.2 Symbols and abbreviations 4 General requirements
38、4.1 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 the CCR. The rated
39、current 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 b
40、etween two lines of the local network voltage. The standard values are the following values as specified in HD 472 S1:1989 and IEC 38:1983: 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 i
41、n the following conditions: a) temperature limits: from 20 C to + 50 C, b) Relative humidity of 95 % or less, non-condensing. c) Altitude from 0 m to 1 000 m, with the derating characteristics according to clause 9 of HD 553 S2. 4.3 Power transformer This transformer shall comply with the requiremen
42、ts of HD 398. The 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
43、 at least five adjustable 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 limits 1 % for each setting, at any load between full load and short-circuit. The input voltage could vary from 95 % to 110 % of t
44、he nominal input voltage. 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 0,25 s. 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 conn
45、ected via isolating transformers. 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 between 50 % and 100 % of the nominal load. If more than 30 % of the transform
46、ers are in open circuit, the 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 0,90 for any CCR. It shall be measured at maximum intensity step for rated supply voltage and frequency. CCR:Constant current regulator In:n
47、ominal current LV:Low Voltage 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. StepsNominal Output (r.m.s.) Limits of minimal value Limits of maximal value AAA 56,66,536,67 45,25,145,26 34,14,054,15 23,43,35
48、3,45 12,82,752,85 Licensed Copy: London South Bank University, London South Bank University, Tue Dec 12 07:10:23 GMT+00:00 2006, Uncontrolled Copy, (c) BSI ENV 50231:1997 BSI 03-19995 4.6 Power factor With a nominal resistive load and at maximum intensity step brightness, for rated supply voltage an
49、d frequency, the power factor of the CCR shall be at least 0,90 for any CCR rating. 4.7 Load matching Regulators, rated 10 kVA and more, shall match connected loads from rated load to approximately 50 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 specified above. If not, partial load taps shall be provided to all