This part of GB/T 15766 is applicable to lamps (filament lamps and discharge lamps) to be used in headlamps, fog-lamps and signalling lamps for road vehicles. It is especially applicable to those lamps which are listed in IEC 60809. This part may also be used for other lamps falling under the scope of this part.
This part specifies requirements and test methods for the measurement of performance characteristics such as lamp life, lumen maintenance, torsion strength, glass bulb strength and resistance to vibration and shock. Moreover, information on temperature limits, maximum lamp outlines and maximum tolerable voltage surges is given for the guidance of lighting and electrical equipment design.
For some of the requirements given in this part, reference is made to data given in tables. For lamps not listed in such tables, the relevant data are supplied by the lamp manufacturer or responsible vendor.
The performance requirements are additional to the basic requirements specified in IEC 60809. They are, however, not intended to be used by authorities for legal type-approval purposes.
Note 1: In the various vocabularies and standards, different terms are used for "incandescent lamp" (GB/T 2900.65, 845-07-04) and "discharge lamp" (GB/T 2900.65, 845-07-17). In this part, "filament lamp" and "discharge lamp" are used. However, where only “lamp” is written both types are meant, unless the context clearly shows that it applies to one type only.
Note 2: this part does not apply to luminaires.
2 Normative References
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 2423.10-2008 Environmental Testing for Electric and Electronic Products — Part 2: Tests Methods — Test Fc: Vibration (Sinusoidal) (IEC 60068-2-6:1995, IDT)
IEC 60068-2-47:1999 Environmental Testing — Part 2-47: Test Methods — Mounting of Components, Equipment and Other Articles for Vibration, Impact and Similar Dynamic Tests
IEC 60410:1973 Sampling Plans and Procedures for Inspection by Attributes
IEC 60809:2012 Lamps for Road Vehicles — Dimensional Electrical and Luminous Requirements
ISO 5344:1980 Electrodynamic Test Equipment for Generating Vibration — Methods of Describing Equipment Characteristics
3 Terms and Definitions
For the purposes of this document, the terms and definitions given in GB/T 2900.65, IEC 60809 and the following apply.
Foreword III 1 Scope 2 Normative References 3 Terms and Definitions 4 Requirements and Test Conditions for Filament Lamps 4.1 Basic function and interchangeability 4.2 Torsion strength 4.3 Characteristic life T 4.4 Life B3 4.5 Lumen maintenance 4.6 Resistance to vibration and shock 4.7 Glass-bulb strength 5 Filament Lamp Data 6 Requirements and Test Conditions for Discharge Lamps 6.1 Basic function and interchangeability 6.2 Mechanical strength 6.3 Characteristic life T 6.4 Life B3 6.5 Lumen maintenance 6.6 Resistance to vibration and shock 6.7 Discharge lamps with integrated starting device Annex A (Normative) Life Test Conditions for Filament Lamps Annex B (Normative) Vibration Tests Annex C (Normative) Glass-bulb Strength Test Annex D (Normative) Life and Lumen Maintenance Test Conditions for Discharge Lamps Annex E (Normative) Bulb Deflection Test Annex F (Informative) Guidance for Equipment Design Annex G (Informative) Information for Ballast Design Annex H (Informative) Symbol Bibliography Figure B.1 Recommended equipment layout for vibration testing Figure C.1 Diagrammatic sketch of the principle of the test equipment Figure E.1 Sketch of the test set-up Figure F.1 Voltage surges for 1 2 V filament lamps — Maximum tolerable duration for a voltage surge as Figure F.2 Maximum filament lamp outlines H1 Figure F.3 Maximum filament lamp outlines H2 Figure F.4 Maximum filament lamp outlines H3 Figure F.5 Maximum filament lamp outlines P21W, PY21W, P21/4W and P21/5W Table 1 Conditions of compliance for life B3 Table 2 Conditions of compliance for the vibration test Table 3 Rated life values for continuous operation Table 4 Rated lumen-maintenance values for continuous operation Table B.1 Vibration test on motor vehicle lamps — Standard test conditions Table B.2 Vibration test on motor vehicle lamps — Heavy-duty test conditions Table B.3 Vibration test on motor vehicle lamps — Standard test conditions Table C.1 Compression strength Table C.2 Inspection by attributes — Double sampling plan Table C.3 Inspection by variables — "S" method of assessment
