1、 Collection of SANS standards in electronic format (PDF) 1. Copyright This standard is available to staff members of companies that have subscribed to the complete collection of SANS standards in accordance with a formal copyright agreement. This document may reside on a CENTRAL FILE SERVER or INTRA
2、NET SYSTEM only. Unless specific permission has been granted, this document MAY NOT be sent or given to staff members from other companies or organizations. Doing so would constitute a VIOLATION of SABS copyright rules. 2. Indemnity The South African Bureau of Standards accepts no liability for any
3、damage whatsoever than may result from the use of this material or the information contain therein, irrespective of the cause and quantum thereof. ISBN 978-0-626-21018-2 SANS 1670:2008Edition 1.1Any reference to SABS 1670 is deemedto be a reference to this standard(Government Notice No. 1373 of 8 No
4、vember 2002)SOUTH AFRICAN NATIONAL STANDARD Warning lights Published by Standards South Africa 1 dr lategan road groenkloof private bag x191 pretoria 0001 tel: 012 428 7911 fax: 012 344 1568 international code +27 12 www.stansa.co.za Standards South Africa SANS 1670:2008 Edition 1.1 Table of changes
5、 Change No. Date Scope Amdt 1 2008 Amended to change the designation from SABS to SANS, to update referenced standards, to update the definition for “acceptable”, and to change the requirements for colour and chromaticity co-ordinates (4.2) and flash rate and “on” time (4.4). Foreword This South Afr
6、ican standard was approved by National Committee StanSA TC 5120.71, Lighting and optics for traffic and transport, in accordance with procedures of Standards South Africa, in compliance with annex 3 of the WTO/TBT agreement. This document was published in May 2008. This document supersedes SABS 1670
7、:1996 (edition 1). A vertical line in the margin shows where the text has been technically modified by amendment No. 1. Annexes A and B form an integral part of this document. Annex C is for information only. SANS 1670:2008 Edition 1.1 1 Contents Page Foreword 1 Scope . 3 2 Normative references. 3 3
8、 Definitions 4 4 Requirements. 6 5 Inspection and methods of test 8 5.1 Inspection 8 5.2 General conditions of testing. 8 5.3 Colour test. 9 5.4 Luminous intensity test 9 5.5 Flash rate and “on“ time 9 5.6 Endurance test 10 5.7 Resistance to extreme temperatures 10 5.8 Holding force of temporary lig
9、hts 10 5.9 Vibration and drop test 10 5.10 Impact test. 10 5.11 Radiation test 10 6 Marking 11 Annex A (normative) Notes to purchasers 13 Annex B (normative) Quality verification of warning lights 13 Annex C (informative) Bibliography. 14 SANS 1670:2008 Edition 1.1 2 This page is intentionally left
10、blank SANS 1670:2008 Edition 1.1 3 Warning lights 1 Scope 1.1 This standard specifies the requirements for warning lights for temporary and for permanent mounting on vehicles. 1.2 This standard does not cover a) hazard lights of vehicles (simultaneous operation of all direction indicators); b) the p
11、ositioning of warning lights on a vehicle; and c) the method of connection of warning lights to the vehicles electrical system. 2 Normative references The following standards contain provisions which, through reference in this text, constitute provisions of this standard. All standards are subject t
12、o revision and, since any reference to a standard is deemed to be a reference to the latest edition of that standard, parties to agreements based on this standard are encouraged to take steps to ensure the use of the most recent editions of the standards indicated below. Information on currently val
13、id national and international standards can be obtained from Standards South Africa. IEC 60068-2-32, Basic environmental testing procedures Part 2: Tests Section 32: Test Ed: Free fall. IEC 60068-2-75, Environmental testing Part 2-75:Tests Test Eh: Hammer tests. Amdt 1 IEC 60721-3-5, Classification
14、of environmental conditions Part 3: Classification of groups of environmental parameters and their severities Section 5: Ground vehicle installations. SANS 214-1/CISPR 14-1, Electromagnetic compatibility Requirements for household appliances, electric tools and similar apparatus Part 1: Emission. Am
15、dt 1 SANS 1376-1, Lights for motor vehicles Part 1: Incandescent lamps. SANS 60529/IEC 60529, Degrees of protection provided by enclosures (IP Code). SANS 1670:2008 Edition 1.1 4 3 Definitions For the purposes of this standard, the following definitions apply: 3.1 acceptable acceptable to the author
16、ity administering the standard, or to the parties concluding the purchase contract, as relevant Amdt 1 3.2 colour colour of the light emitted by a warning light, defined in terms of its chromaticity co-ordinates, using the trichromatic system recommended by the International Commission on Illuminati
17、on (CIE) 3.3 effective luminous intensity luminous intensity of the light as determined by the maximum luminous intensity of the flash, the duration of the flash and the shape of the luminous intensity curve of the flash The effective luminous intensity (Je, in candelas) is given numerically by: Je=
18、 TFCJ+1mwhere Jm is the peak intensity, in candelas; C is a time constant (C = 0,2 s); T is the duration of one cycle; F is the form-factor TJdtJmTO; where J is the instantaneous intensity, in candelas. 3.4 flash rate number of times per second that a warning light completes a cycle from maximum lum
19、inous intensity to the next corresponding maximum luminous intensity 3.5 luminous intensity intensity of the light emitted by a warning light in a specific direction NOTE The luminous intensity is expressed in candelas (cd). 3.6 measuring directions directions that are perpendicular to the reference
20、 axis of the light, and that pass through the reference centre of the light SANS 1670:2008 Edition 1.1 5 3.7 “on time“ tH period of time within which the luminous intensity of a flashing light is more than 10 % of the maximum value (peak value) Jmax3.8 power supply voltage range range of primary pow
21、er supply voltage over which a warning light will operate within specified performance parameters 3.9 reference axis of a warning light axis that passes through the reference centre of the light NOTE The reference axis is vertical for a warning light that emits light horizontally through an angle of
22、 360, but horizontal for a warning light that is mounted on the front of a vehicle like a headlight. 3.10 reference centre of a warning light centre of the light-emitting source 3.11 temperature range range of temperatures within which a warning light will operate within specified performance parame
23、ters 3.12 type of warning light type of the warning light as determined by: a) the trade name or make; b) the size and form of the coloured cover; c) the optical system; d) the nature of the beam (rotating or stationary flashing); e) the colour of the light emitted; f) the light source; and g) wheth
24、er the light has one or two levels of luminous intensity 3.13 vibration stability ability of a warning light to operate within specified mechanical and electrical performance parameters after a mechanical vibration test 3.14 warning light light that emits light intermittently around its reference ax
25、is NOTE Examples of warning lights are the lights mounted on emergency vehicles, such as police cars and ambulances. SANS 1670:2008 Edition 1.1 6 4 Requirements 4.1 General construction and workmanship 4.1.1 A warning light shall be so designed and constructed that, under normal conditions of use, a
26、nd not withstanding the vibrations to which it might be subjected in such use, its satisfactory operation remains assured and it retains the characteristics prescribed by this standard. 4.1.2 Warning lights for temporary attachment to a vehicle shall be so designed as to prevent damage to the vehicl
27、es body. 4.1.3 In the case of a warning light that has a rotating beam, the direction of rotation, viewed from above, shall be clockwise. 4.2 Colour and chromaticity co-ordinates 4.2.1 The colour of the light beam emitted by a warning light shall be one of the following, as required (see annex A and
28、 table 1): a) red; b) South African Police Service blue. Amdt 1 4.2.2 When determined in accordance with 5.3, the chromaticity co-ordinates of the light beam emitted by a warning light shall, on the CIE chromaticity diagram (see figure 1), be within the appropriate area defined by the co-ordinates g
29、iven in table 1. Table 1 Chromaticity co-ordinates 1 2 3 4 5 6 Chromaticity co-ordinates Colour Co-ordinate 1 2 3 4 Red x y 0,665 0,335 0,657 0,335 0,728 0,264 0,734 0,266 SAPS blue x y 0,125 0,290 0,220 0,325 0,240 0,360 0,140 0,330 Amdt 1 4.3 Photometric properties 4.3.1 The light emitted by a war
30、ning light shall be visible through a horizontal angle of 360 or as otherwise indicated on the light or on its packaging. 4.3.2 When determined in accordance with 5.4, the effective luminous intensity emitted by a warning light shall comply with the values given in table 2. NOTE A tolerance of 20 %
31、is allowed on the minimum values of intensity on samples taken from ordinary production. SANS 1670:2008 Edition 1.1 7 4.3.3 In the case of warning lights that have two levels of luminous intensity, the effective luminous intensities in various directions shall be as specified in table 2. In the case
32、 of warning lights that have one level of luminous intensity, the “by night” levels shall apply. 4.4 Flash rate and “on“ time When tested in accordance with 5.5 with the supply voltage set at 90 % and at 115 % of the rated voltage, the flash rate and “on” time shall comply with the values given in t
33、able 2. Table 2 Photometric properties 1 2 3 4 Colour Property Limits By day or by night Blue, Red max. 4 Flash rate, f, Hz min. 2 “On” time tH, s max. f6,0day 105 0 night 42 day 55 4 night 22 day Minimum value of the effective luminous intensity Je, around the reference axis, cd 8 night day 1 680 M
34、aximum value of the effective luminous intensity Je, cd night 670 Amdt 1 4.5 Endurance When tested in accordance with 5.6, a warning light shall operate continuously for a period of 14 d without any malfunction, and the photometric properties shall not deviate by more than 10 % from the initial valu
35、es measured before the start of the test. 4.6 Resistance to rain In its normal operating position, a warning light shall have an IP rating of IPX3M in accordance with SANS 60529. 4.7 Resistance to extreme temperatures When a warning light is tested in accordance with 5.7, no malfunction shall occur.
36、 4.8 Holding force (temporary lights) When tested in accordance with 5.8, a warning light that is intended to be fitted temporarily shall not become dislodged from the steel plate. 4.9 Radio interference A warning light shall comply with the requirements of SANS 214-1. Amdt 1 SANS 1670:2008 Edition
37、1.1 8 4.10 Resistance to vibration and dropping After having been subjected to the vibration and drop test in accordance with 5.9, a warning light shall show no signs of damage that could adversely affect its performance, and no parts shall have become loose. 4.11 Resistance to impact When tested in
38、 accordance with 5.10, a warning light shall show no signs of cracking or any other damage that could adversely affect its performance. A slight indentation is not regarded as damage. 4.12 Resistance to UV radiation When tested in accordance with 5.11, a warning light shall show no signs of damage t
39、hat could adversely affect its performance, and the chromaticity co-ordinates of the light beam emitted by a warning light shall, on the CIE chromaticity diagram (see figure 1), be within the appropriate area defined by the co-ordinates given in table 1. 5 Inspection and methods of test 5.1 Inspecti
40、on Visually examine each warning light for compliance with the requirements of 4.1 and clause 6. 5.2 General conditions of testing 5.2.1 Supply-voltage stabilization Maintain the test voltage to within 0,2 %. 5.2.2 Accuracy of measuring instruments Carry out measurements with instruments of an accur
41、acy appropriate to the requirements (at least class 0,2, i.e. 0,2 % of full-scale deflection). 5.2.3 Environmental conditions Unless otherwise stated, carry out the tests under the following environmental conditions: temperature : 23 3 C relative humidity : 45 % to 75 % pressure : 86 kPa to 106 kPa
42、5.2.4 Power supply Unless otherwise stated, carry out tests at the rated voltage marked on the warning light. SANS 1670:2008 Edition 1.1 9 5.3 Colour test Fit the warning light with the appropriate standard lamp of the category marked on the light, operating at a colour temperature of 2 854 K (corre
43、sponding to illuminant A of the CIE) or, in the case of a warning light that uses a discharge lamp, operating at a colour temperature of 6 774 K (CIE standard source “C”). Use a spectrophotometer or other equally suitable colour-measuring device to determine the chromaticity co-ordinates of the ligh
44、t beam emitted by the light, and check for compliance with 4.2.2. 5.4 Luminous intensity test 5.4.1 Apparatus 5.4.1.1 Mounting base, comprising a rigid structure that allows the warning light to be rotated around its reference centre and that has mounting arrangements such that the light can be moun
45、ted in its normal operating position, with the light source at the centre of rotation. 5.4.1.2 Detector, of the vision-corrected photo-electric type, of suitable sensitivity for measuring and recording luminous intensities accurately to within 2 %. The distance of measurement is such that the invers
46、e square law is applicable. 5.4.1.3 Screening, of a type such that stray light is avoided. 5.4.2 Procedure 5.4.2.1 Mount the warning light in its normal operating position on a mounting base as described in 5.4.1.1. 5.4.2.2 Use a standard lamp as provided for in SANS 1376-1 which corresponds to a la
47、mp of the category specified for the light. 5.4.2.3 In the case of filament lamps, so regulate the voltage that the standard lamp provides the required luminous flux. In the case of discharge lamps, operate the warning light at its rated voltage. 5.4.2.4 Determine the effective luminous intensities
48、around the reference axis of the lamp (but see 4.3.1): in a plane perpendicular to the reference axis and passing through the reference centre of the light, and in cones, the generating lines of which are at angles to the plane as given in table 2. 5.4.2.5 Use the vision-corrected photo-electric cel
49、l and a suitable recording device such as an oscilloscope, to record the instantaneous luminous intensity against time. Use the following formula (see 3.3) to determine the effective luminous intensity, and check for compliance with 4.3.2: Je= TFCJ+1m5.5 Flash rate and “on“ time Use the detector described in 5.4.1.2 to determine the flash rate and the “on” time of a warning light, and check for compliance with 4.4. SANS 1670:2008 Edition 1.1 10 5.6 Endurance test Fit a warning light with the appropriate standard lamp of the cate
