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1、BRITISH STANDARD BS 6873:1988 Incorporating Amendment Nos. 1, 2 and 3 Specification for Filament lamps for cycles ICS 43.040.20:43.150 Licensed Copy: sheffieldun sheffieldun, na, Wed Dec 06 12:17:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6873:1988 This British Standard, having been prepared u
2、nder the direction of the Electrical Illumination Standards Committee, was published under the authority of the Board of BSI and comes into effect on 29 February 1988 BSI 04-2000 The following BSI references relate to the work on this standard: Committee reference LGL/6 Draft for comment 85/32861 DC
3、 ISBN 0 580 16114 5 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Electrical Illumination Standards Committee (LGL/-) to Technical Committee LGL/6 upon which the following bodies were represented: Association of Manufacturers Allied to
4、 the Electrical and Electronic Industry (BEAMA Ltd.) British Lighting Association for the Preparation of Standards (Britlaps) Bus and Coach Council Chartered Institution of Building Services Engineers Consumer Standards Advisory Committee of BSI Electricity Supply Industry in England and Wales Engin
5、eering Equipment and Materials Users Association Institution of Lighting Engineers Lighting Industry Federation Ltd. London Regional Transport Ministry of Defence Society of Glass Technology Society of Motor Manufacturers and Traders Ltd. The following body was also represented in the drafting of th
6、e standard, through subcommittees and panels: Department of Transport (Highways) Amendments issued since publication Amd. No.DateComments 6639April 1991 7757July 1993 10461August 1999Indicated by a sideline in the margin Licensed Copy: sheffieldun sheffieldun, na, Wed Dec 06 12:17:57 GMT+00:00 2006,
7、 Uncontrolled Copy, (c) BSI BS 6873:1988 BSI 04-2000i Contents Page Committees responsibleInside front cover Forewordii Section 1. General 1Scope1 2Definitions1 3Marking2 4Requirements and tests for inspection, rating and life2 5Conditions of compliance3 Appendix A Statistical basis of the tests6 Ap
8、pendix B Service operation of halogen lamps6 Appendix C Numbering system for standard lamp data sheets6 Table 1 Initial torque values2 Table 2 Inspection test quantities and compliance numbers for 5.2.13 Table 3 Inspection test quantities and compliance numbers for 5.2.24 Table 4 Rating test quantit
9、ies and compliance numbers: wattage and luminous flux4 Table 5 Test quantities and compliance numbers5 Section 2. Standard lamp data sheets7 Publications referred toInside back cover Licensed Copy: sheffieldun sheffieldun, na, Wed Dec 06 12:17:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6873:19
10、88 ii BSI 04-2000 Foreword This British Standard has been prepared by Subcommittee CPL/34/1/3, Automobile filament lamps. It includes requirements for all the filament lamps specified in BS 6102-3, some of the filament lamps previously specified in BS 941, which has been withdrawn, and also some of
11、the filament lamps more recently developed of both halogen and non-halogen type. Section one specifies the general requirements for lamps and section 2 consists of individual standard lamp data sheets giving details pertinent to each type of lamp. BS 6873 is one of a series of British Standards that
12、 have superseded BS 941 (which has been withdrawn). The other two British Standards in the series are: BS EN 60809, Filament lamps for road vehicles. Dimensional, electrical and luminous requirements. BS EN 60810, Specification for lamps for road vehicles. Performance requirements. The statistical b
13、asis for the tests on which the standard is based are given in Appendix A. Recommendations for service conditions for halogen lamps are given in Appendix B. The numbering system for standard lamp data sheets is explained in Appendix C. The current status of each data sheet is indicated on page 7 (se
14、e Appendix C). The amendment by which each page was introduced is indicated by an extension to the shoulder heading at the top of the page (e.g. BS 6873:1998/A1:1991). Where no such extension appears, the page is part of the original British Standard. NOTESeveral of the data sheets refer to BS 5101-
15、1, which has now been withdrawn and superseded by BS EN 60061-1. References to BS 5101-1 should be read as references to BS EN 60061-1. A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application.
16、 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, pages 1 to 48, an inside back cover and a back cover. This standard has been updated (see copyright date) and
17、may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover. Licensed Copy: sheffieldun sheffieldun, na, Wed Dec 06 12:17:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6873:1988 BSI 04-20001 Section 1. General 1 Scope This British Standard specifi
18、es requirements for lamps for use in cycle headlamps and rear lamps that operate at supply voltages up to 6 V. It specifies the technical requirements that ensure quality and interchangeability and it describes the methods of test to be used, together with the conditions of compliance to be applied
19、to the results, to decide whether a batch of lamps is acceptable. Section 1 specifies general requirements for lamps and section 2 consists of individual standard lamp data sheets giving details pertinent to each type of lamp. NOTEThe titles of the publications referred to in this standard are liste
20、d on the inside back cover. 2 Definitions For the purposes of this British Standard the following definitions apply. 2.1 type lamps which have the same nominal dimensions, rated voltage, photometric and electrical characteristics 2.2 batch a definite quantity of lamps of one type manufactured under
21、conditions which are presumed uniform 2.3 rated voltage the voltage for which the lamp is designed 2.4 rated wattage the wattage for which the lamp is designed 2.5 initial reading the photometric and electrical measurements made at the end of the ageing period 2.6 lumen (Im) the unit of luminous flu
22、x. It is equal to the flux emitted within a solid angle of one steradian by a uniform point source of one candela 2.7 ageing the operation of a new lamp for a specified period in order to stabilize its photometric and electrical characteristics 2.8 life the number of hours the lamp operates until it
23、 fails, or the number of hours assigned to the lamp under the test conditions of this standard 2.9 rated life the life for which the lamp is designed when operated under the test conditions of this standard 2.10 average life the arithmetic mean of the lives of the lamps in the LTQ 2.11 lumen mainten
24、ance the ratio between the luminous flux at 75 % of the rated life and the initial luminous flux of the lamp, expressed as a percentage NOTELumen maintenance is only applicable for lamps with a rated life of 100 h or more. 2.12 life test voltage the voltage at which the life test is carried out NOTE
25、This is the rated voltage unless otherwise stated on the appropriate standard lamp data sheet. 2.13 light centre length (LCL) the distance from the centre of the rectangle which encloses the luminous section of the filament or a defined point on the filament, to a fixed reference plane on the cap NO
26、TEThe reference point is indicated on the appropriate standard tamp data sheet. 2.14 standard lamp a lamp with a colourless bulb and with reduced dimensional tolerances, used for the testing of lighting equipment 2.15 objective value value to be aimed at when the lamp is operated at test voltage 2.1
27、6 lateral deviation the perpendicular distance from the geometric centre of the filament to the reference axis of the cap 2.17 reference plane a plane defined with reference to the cap or base and with respect to which the positions of certain parts of the lamp are measured Licensed Copy: sheffieldu
28、n sheffieldun, na, Wed Dec 06 12:17:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6873:1988 2 BSI 04-2000 2.18 reference axis an axis defined with reference to the cap or base and with respect to which positions of certain parts of the lamp are measured 2.19 inspection test quantity (ITQ) the num
29、ber of lamps to be tested to decide whether a batch satisfies the visual, mechanical and physical requirements of this standard 2.20 rating test quantity (RTQ) the number of lamps to be tested to decide whether a batch satisfies the requirements for initial readings 2.21 life test quantity (LTQ) the
30、 number of lamps to be tested to decide whether a batch satisfies the requirements for life and for lumen maintenance when specified in the data sheets 2.22 rated current the current which the lamp is designed to take when operated at rated voltage 3 Marking Each lamp shall be distinctly and durably
31、 marked with the following information: a) rated voltage; b) rated wattage or rated current. If there is sufficient space, each lamp shall be distinctly and durably marked with the manufacturers identity code or mark. 4 Requirements and tests for inspection, rating and life 4.1 Test quantities 4.1.1
32、 General. Lamps which are accidentally broken during a test shall, when necessary, be replaced to ensure that the required number of lamps complete the test. The results obtained with replacement lamps shall be substituted for those of the broken lamps. NOTEIn order to avoid unnecessary delay, it is
33、 recommended that spare lamps be tested with each test quantity. 4.1.2 Inspection test quantity (ITQ). The inspection test quantity shall be a minimum of 50 lamps selected, at random, from at least 10 containers, or from all containers if there are less than 10. 4.1.3 Rating test quantity (RTQ). The
34、 rating test quantity shall be two-fifths of the ITQ selected at random from the light sources of the ITQ which satisfy the individual light source requirements of the inspection test. In the case of a fraction resulting from this calculation, the next higher whole number shall be taken. 4.1.4 Life
35、test quantity (LTQ). The life test quantity shall be all lamps which have satisfied the individual light source requirements of the rating test. 4.2 Inspection 4.2.1 Dimensions. The lamps shall comply with the dimensions shown on the appropriate standard lamp data sheet. 4.2.2 Bulb. The bulb shall e
36、xhibit no scores or spots that might impair the efficiency or optical performance of the lamp. The position of granulation or frosting is specified on the appropriate standard lamp data sheet. NOTEThe bulb should be clear unless otherwise specified by the purchaser. 4.2.3 Terminations cap. The caps
37、shall be as specified on the appropriate standard lamp data sheet and shall be fixed firmly to the bulbs such that they withstand the initial torque specified in Table 1, without visible relative movement between cap and bulb. The cap shall be held firmly without distortion and the appropriate torqu
38、e gradually applied to the bulb in a clockwise direction and held for 5 2 s. Table 1 Initial torque values 4.2.4 Solder. Where the lead-out wires are soldered to the cap, the solder shall be applied evenly and in such quantity as to allow proper engagement of the cap in the appropriate standard lamp
39、 holder and to ensure satisfactory electrical contact. The wire shall not project more than 1 mm beyond the surface of the solder. 4.3 Rating 4.3.1 Ageing. Before initial readings are taken, the lamps shall be aged at the life test voltage for between 15 min and 20 min. Cap/base type (see BS 5101-1)
40、 Initial torque Nm E10/130.23 EP10/130.23 P13.5sNo requirement W2.1 9.5dNo requirement Licensed Copy: sheffieldun sheffieldun, na, Wed Dec 06 12:17:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6873:1988 BSI 04-20003 4.3.2 Initial readings. The lamps shall be measured for wattage and luminous flu
41、x at rated voltage. 4.4 Life 4.4.1 Operating position. If not specified on the appropriate standard lamp data sheet the lamps under test shall be mounted in horizontal burning position and shall have a free circulation of air in a room temperature not exceeding 30 C. The lamps shall maintain their r
42、espective burning positions for the entire test. 4.4.2 Test voltage. The test voltage shall be as specified on the appropriate standard lamp data sheet. The supply shall be either d.c. or a.c. at a frequency between 40 Hz and 60 Hz. Short fluctuations from the test voltage shall not exceed 1 %. NOTE
43、In cases of doubt, the test with d.c. is the reference test. 4.4.3 Test procedure. Lamps shall be switched off for two periods of not less than 15 min of each day. Such periods shall not be included as part of the life of the lamp. 4.4.4 Duration of test. The test shall be deemed to have terminated
44、at 160 % of the minimum average life specified on the appropriate standard lamp data sheet. Any lamp still operating shall be deemed to have a life 160 % of the specified minimum average life. A lamp which burns out at less than 160 % of the specified minimum average life shall be deemed to have a l
45、ife of the number of hours at burn out. 4.4.5 Lumen maintenance. The lumen maintenance of individual lamps shall be measured at 75 5 % of the minimum average life specified in the appropriate standard lamp data sheet. If any lamp fails to comply with the specified minimum lumen maintenance it shall
46、be deemed to have a life 75 % of the specified minimum life. 5 Conditions of compliance 5.1 General A batch of lamps shall be deemed to comply with this standard if the requirements specified in 5.2, 5.3 and 5.4 are satisfied. 5.2 Inspection tests 5.2.1 The number of lamps failing to comply with any
47、 one of 4.2.1 to 4.2.4 inclusive shall not exceed the appropriate compliance number in Table 2. Table 2 Inspection test quantities and compliance numbers for 5.2.1 5.2.2 The cumulative number of lamps failing to comply with all of 4.2.1 to 4.2.4 inclusive shall not exceed the appropriate compliance
48、number in Table 3. 5.3 Rating tests 5.3.1 The number of lamps having initial wattage outside the limits shown for objective wattage on the appropriate standard lamp data sheet shall not exceed the appropriate compliance number in Table 4. 5.3.2 The number of lamps having initial luminous flux outsid
49、e the limits for objective luminous flux shown on the appropriate standard lamp data sheet shall not exceed the appropriate compliance number in Table 4. ITQCompliance number 503 51 654 66 805 81 1006 101 1257 126 1458 146 1709 171 20010 201 22511 226 25512 256 28513 286 31514 316 33515 336 36016 361 39017 391 42018 421 44519 446 47520 476 50021 Licensed Copy: sheffieldun sheffieldun, na, Wed Dec 06 12:17:57 GMT+00:00 2006, Uncontrolled Copy, (c) BSI BS 6873:1988 4 BSI 04-2000 Table 3 Inspection test quantities and c