AS 4091-1993

1 - AS 4091:1993 TUNGSTEN FILAMENT LAMPS FOR GENERAL SERVICE - SAFETY REQUIREMENTS
4 - PREFACE
5 - CONTENTS
6 - SECTION ONE - GENERAL
6 - 1. Scope
6 - 2. Definitions
6 - 2.1 Category
7 - 2.2 Type
7 - 2.3 Class
7 - 2.4 Rated voltage
7 - 2.5 Test voltage
7 - 2.6 Rated wattage
7 - 2.7 End of life
7 - 2.8 Cap temperature rise
7 - 2.9 Design test
7 - 2.10 Periodic test
7 - 2.11 Running test
8 - 2.12 Batch
8 - 2.13 Whole production
8 - SECTION TWO - SAFETY AND INTERCHANGEABILITY REQUIREMENTS
8 - 3. General
8 - 4. Marking
8 - 5. Protection against accidental contact in screw lampholders
9 - 6. Resistance to torque
10 - 7. Insulation resistance of B15d, B22d, E27/ 51 x 39 capped lamps and other lamps with caps having insulated skirts
10 - 8. Accidentally live parts
11 - 9. Creepage distance for B15d or B22d capped lamps
11 - 10. Lamp cap temperature rise
12 - 11. Safety at end of life
12 - 12. Interchangeability
13 - SECTION THREE - ASSESSMENT
13 - 13. Whole production appraisal by means of manufacturers’ records
13 - 14. Conditions of compliance by means of manufacturers’ records
18 - 15. Batch appraisal
18 - 15.1 Principles of sampling
19 - 15.2 Number of lamps in the sample
19 - 15.3 Sequence of the tests
19 - 15. 4 Condition of rejection of batches
21 - APPENDIX A - PACKAGING MARKING SYMBOLS FOR DICHROIC REFLECTORIZED “COOL BEAM” LAMPS AND BOWL MIRROR LAMPS
22 - APPENDIX B - HOLDERS FOR TORQUE TEST (CLAUSE 6)
24 - APPENDIX C - RESISTANCE TO TORQUE FOLLOWING HEATING
25 - APPENDIX D - OPERATION TO FAILURE TEST
26 - APPENDIX E - INDUCED FAILURE TEST
26 - INDUCED FAILURE TEST
26 - E1. Test circuit
27 - E2. Test procedures
27 - E3. Assessment
28 - APPENDIX F - ACCEPTANCE CRITERIA - CONTINUOUSLY VARIABLE RESULTS
30 - APPENDIX G - MISCELLANEOUS TEST PROCEDURES
30 - G1. Creepage distances
30 - G2. Lamp cap temperature rise
30 - G3. Insulation resistance
31 - APPENDIX H - METHOD OF MEASURING MAINS IMPEDANCE
33 - APPENDIX J - INDUCED FAILURE TEST: GROUPING, SAMPLING AND COMPLIANCE
33 - J1. Grouping
33 - J2. Sampling
34 - J3. Alternative test data
34 - J4. Conditions of compliance
34 - J5. Examples to illustrate applications of the proposals for induced failure test sampling

Specifies the safety and interchangeability requirements for incandescent lamps with rated wattage up to 200 W and rated voltage of 50 V to 250 volt, and a method to be used by manufacturers to show compliance with the requirements of the Standard. This Standard is identical with and has been reproduced from IEC 432:1984.

This standard specifies the safety and interchangeability requirements of tungsten filament lamps for domestic and similar general lighting purposes having:- pear-shaped, mushroom-shaped, candle, round, reflector, or other bulb shapes where the lamps are intended to serve the same purpose as any lamps with the foregoing bulbs:- a rated wattage up to and including 200 W; - a rated voltage of 50 V to 250 V inclusive; - caps: B15d, B22d, E14, or E27; - finishes: all.It also specifies the method a manufacturer should use to show compliance with the requirements of this standard on the basis of whole product appraisal in association with his test records on finished products. This method can also be applied for certification purposes. Details of a batch test procedure which can be used to make limited assessment of batches are also given.Requirements for batch testing are included in order to enable the assessment of batches presumed to contain unsafe lamps. As some safety requirements cannot be checked by batch testing and as there mostly is no previous knowledge of the manufacturer's quality, batch testing cannot be used for certification purposes or in any way for an approval of the batch. In case of a positive result, a testing agency may only conclude that there are no reasons to reject the batch on safety grounds.Note. - Compliance with this standard concerns only safety criteria and takes no account of the performance of tungsten filament lamps in respect of light output, life or power consumption characteristics. Users should refer to IEC Publication 64, fifth edition: Tungsten Filament Lamps for Domestic and Similar General Lighting Purposes, (under consideration) for such characteristics with respect to types normally used for general lighting purposes.

First published as AS 4091-1993.