This British Standard specifies the requirements for railway signalling lamps and gives the testing procedures required to establish conformity to the requirements, based upon statistical evaluation against an acceptable non-conformity level.<\/p>\n
Requirements, testing procedures and conditions, statistical sampling.<\/p>\n
| PDF Pages<\/th>\n | PDF Title<\/th>\n<\/tr>\n | ||||||
|---|---|---|---|---|---|---|---|
| 1<\/td>\n | BRITISH STANDARD <\/td>\n<\/tr>\n | ||||||
| 2<\/td>\n | Committees responsible for this British\ufffdStandard <\/td>\n<\/tr>\n | ||||||
| 3<\/td>\n | Contents <\/td>\n<\/tr>\n | ||||||
| 5<\/td>\n | Section 1. General 1 Scope 2 Normative references 3 Definitions 3.1 rated value 3.2 double-pole lamp 3.3 triple-pole lamp 3.4 light centre 3.5 reference plane 3.6 reference axis 3.7 light centre length 3.8 axial error (lateral deviation) 3.9 initial readings 3.10 life <\/td>\n<\/tr>\n | ||||||
| 6<\/td>\n | 3.11 batch 3.12 inspection test quantity (ITQ) 3.13 rating test quantity (RTQ) 3.14 life test quantity (LTQ) 3.15 reference number 4 Requirements 4.1 General 4.2 Marking 4.3 Dimensions and filament arrangements 4.4 Caps <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | 4.5 Insulation resistance 4.6 Cap solder 4.7 Initial readings 4.8 Life Figure 1 – Holder for torsion test for B.22 (3-pin) caps <\/td>\n<\/tr>\n | ||||||
| 8<\/td>\n | Figure 2 – Holder for torsion test for B.15 caps <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | Section 2. Standard data sheets for railway signalling lamps <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | Annex A (normative) Testing A.1 Batch testing procedure A.1.1 Sampling A.1.2 Test quantity A.2 Test methods A.2.1 General A.2.2 Marking A.2.3 Torsion strength test <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | A.2.4 Insulation test A.2.5 Rating tests A.2.6 Life test Table A.1 – Acceptable non-conformity level for mechanical and physical requirements A.3 Acceptable non-conformity level A.3.1 General A.3.2 Mechanical and physical characteristics A.3.3 Initial readings <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | Table A.2 – Acceptable non-conformity level for lamps of an RTQ which are found to be inoperative at any time… Table A.3 – Acceptable non-conformity level for lamps with wattage above the specified maximum values Table A.4 – Acceptable non-conformity level for lamps with lumen values below the specified minimum values Table A.5 – Acceptable non-conformity level for lamps with lumen values below the specified minimum values an… A.4 Life performance A.4.1 Single filament lamps A.4.2 Double-pole lamps A.4.3 Triple-pole lamps <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | A.4.4 A.4.5 Table A.6 – Allowance for the average life of filaments, main filaments and auxiliary filaments of lamps in a… Table A.7 – Acceptable non-conformity level for lamps in an LTQ in which the filament, main filament and auxi… Annex B (informative) Statistical basis of the test quantities and the acceptable non-conformity levels g… <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Specification for railway signalling lamps<\/b><\/p>\n |