1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULApril 29, 20091SUBJECT 268BOUTLINE OF INVESTIGATIONFORVideo Image Smoke DetectorsIssue No. 1April 29, 2009Summary of TopicsThis first issue of the Outline of Investigation for Video Image SmokeDe
2、tectors, Subject 268B utilizes the existing applicable US requirementsin UL 268, Standard for Smoke Detectors For Fire Alarm Systems, andincorporate additional requirements necessary for the evaluation of VideoImage Smoke Detectors. Although Video Image Smoke Detectors mayinclude flame detection, th
3、is Outline does not include testing for flamedetectors or the combination of Video Image and Flame detection.The UL Foreword is no longer located within the UL Outline of Investigation. Forinformation concerning the use and application of the requirements contained inthis Outline of Investigation, t
4、he current version of the UL Foreword is located onULStandardsInfoNet at: http:/ 2009 UNDERWRITERS LABORATORIES INC.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULAPRIL 29, 2009SUBJECT 268B2No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTH
5、ORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONTENTSGENERAL1 Scope .62 Reserved for future use 63 Glossary .64 Detector Reliability Prediction .74.5 Video image smoke detector, components - monitoring for integrity 75 Installation and Operating Instructions .9CONSTRUCTIO
6、N26 Spacings 926.7 Tests and analysis 9PERFORMANCE27 General 1128 Normal operation test .1128.1 General .1128.2 Standardized alarm signal .1228.3 Sensitivity shift criteria 1229 Electrical Supervision Test 1229.1 General .1229.2 Component failure 1329.3 Photocell-illuminating lamps and light-emittin
7、g diodes (LEDs) 1429.4 Battery-powered units .1429.5 Chamber monitoring (Required only when the detector employs a chamber monitoringfeature) .1529.6 Video image supervision 1530 Sensitivity Test .1631 Directionality Test .1632 Velocity-sensitivity Test 1633 Smoke Entry (Stack Effect) Test 1634 Lamp
8、 Interchangeability Test (Photoelectric) .1635 Reduction in Light Output Test .1636 Stability test 1637 Test for Effect of Air Velocity .1838 Fire tests 1838.1 General .1838.2 Paper fire .1938.3 Wood fire .2038.4 Flammable liquid fire 2138.5 Igniter assembly 2238.6 Test method .2339 Smoldering smoke
9、 test 3040 Smoldering Smoke Test Maximum Obscuration Without Alarm .3441 Circuit Measure Test 3542 Overvoltage and Undervoltage Tests 3542.1 Overvoltage test .3542.2 Undervoltage test 35APRIL 29, 2009 SUBJECT 268B 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOU
10、T PERMISSION FROM UL42.3 Two-wire smoke detectors .3643 Temperature test .3644 Vibration test .4145 Replacement Test, Head and Covers .4146 Jarring Test 4147 Variable Ambient Temperature Tests 4247.1 Operation in high and low ambients 4247.2 Effect of shipping and storage .4448 Humidity Test 4549 Co
11、rrosion Tests 4550 Transient Tests .4650.1 General .4650.2 Internally induced transients .4650.3 Extraneous transients .4750.4 Supply line (hazardous-voltage) transients .4850.5 Supply line (extra-low-voltage circuit) transients 5051 Static Discharge Test .5152 Dust Test 5153 Overload Tests .5353.1
12、Detector .5353.2 Separately energized circuits 5454 Endurance Test 5455 Fire Test Heat Detector 5556 Abnormal Operation Test 5557 Locked Rotor Test 5558 Dielectric Voltage-Withstand Test .5559 Polarity Reversal Test .5660 Tests on Polymeric Materials .5661 Strain Relief Test .5662 Non-compulsory Fir
13、e and Smoldering Smoke Tests .5663 Survivability Test .5664 Audibility Test 5765 Field Service Tests .5765.1 Go/no-go field test 5765.2 Maintenance (cleanability) .5766 Battery Tests .5767 Conformal Coatings on Printed Wiring Boards .58MANUFACTURING AND PRODUCTION69 General 5870 Sensitivity Calibrat
14、ion Tests 5971 Smoke Tests .5972 Photocell Illuminating Lamp Test .5973 Production-Line Dielectric Voltage-Withstand Test 59MARKING74 General 5975 Packaging Marking 59APRIL 29, 2009SUBJECT 268B4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULI
15、NSTRUCTIONS76 Installation instructions wiring diagram .5976.1 All detectors .5977 Technical Bulletin .60APRIL 29, 2009 SUBJECT 268B 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULGENERAL1 Scope1.1 The intent of this Outline of Investigation
16、 is to utilize the existing applicable US requirements in UL268, Standard for Smoke Detectors For Fire Alarm Systems, and incorporate additional requirementsnecessary for the evaluation of Video Image Smoke Detectors. Although Video Image Smoke Detectorsmay include flame detection, this Outline does
17、 not include testing for flame detectors or the combinationof Video Image and Flame detection.1.2 The Video Image Smoke Detectors addressed by this Outline are to be investigated with the intent todetect the image of smoke from a fire in the field of view area defined by the limits of the camera.Ins
18、tallation/operating document(s) and/or product marking information provided with the product mustdescribe the specific operating parameters of the product. This information assists in defining some of thelimits required for the certification program.1.3 Unless otherwise noted in this Outline of Inve
19、stigation, all US requirements in UL 268 are consideredapplicable for Video Image Smoke Detectors.1.4 Clause references noted in Outline of Investigation correlate to references noted in UL 268, unlessotherwise noted.1.5 All applicable requirements that reference the completion of the Sensitivity Te
20、st as outlined in Section30 in the Standard for Smoke Detectors for Fire Alarm Systems, UL 268, shall be substituted with the FireTests as referenced in Section 38 of this Outline.1.6 Reference to the use of two samples shall be replaced with only one sample for testing.1.7 References identified in
21、this outline but not contained within this document are located in theharmonized version of UL 268 or as referenced.2 Reserved for future use3 GlossaryIn addition to the definitions in the Standard for Smoke Detectors for Fire Alarm Systems, UL 268, thefollowing applies.3.19 VIDEO IMAGE SMOKE DETECT
22、OR A detector intended to detect the image of smoke from afire in the area of view covered by a video camera.APRIL 29, 2009SUBJECT 268B6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL4 Detector Reliability Prediction4.1 The maximum failure ra
23、te for a detector unit shall be 4.0 failures per million hours as calculated by afull part stress analysis prediction as described in MIL-HDBK 217 or 3.5 failures per million hours ascalculated by a simplified parts count reliability prediction as described in MIL-HDBK 217, or equivalent,see Annex D
24、 in the Standard for Smoke Detectors for Fire Alarm Systems, UL 268. A Ground Fixed(GF) environment is to be used for all calculations. When actual equivalent data is available from themanufacturer, it is permissible that it be used in lieu of the projected data for the purpose of determiningreliabi
25、lity.4.2 Any component whose failure results in a trouble signal shall not be included in the failure ratecalculation.4.3 A reliable light emitting diode (LED) of a smoke detector employing a photocell-light assembly shallhave a predicted failure rate of not greater than 2.5 failures per million hou
26、rs. See 18.1 and 18.2 in theStandard for Smoke Detectors for Fire Alarm Systems, UL 268.4.4 An application specific integrated circuit (ASIC) employed in a detector shall have a predicted failurerate of not greater than 2.5 failures per million hours. The failure rate is to be determined througheval
27、uation of data in a 3000 hour burn-in test, or equivalent.4.5 Video image smoke detector, components - monitoring for integrity4.5.1 The fuses of a product shall be electrically supervised to indicate rupture of the fuse by an audibletrouble signal when the fault prevents normal operation of the pro
28、duct.Exception: Supplementary products where the fault in no way affects the normal operation of the systemexcept for omission of supplementary features.4.5.2 Opening or shorting of capacitors shall either have no adverse effect on normal operation or beindicated by a trouble or an audible alarm sig
29、nal.Exception: Where it is not practical to have a component failure indicated, a reliable component shall beused. The reliability of the component may be based on de-rating or on reliability data recorded for theparticular component. Suitable sources are:a) The capacitor derating parameters specifi
30、ed in Table 4.5;b) The Military Handbook Electronic Reliability Design Handbook, MIL-HDBK-338; andc) Component reliability data based on actual performance in a similar application, such thatthe failure rate is equal to or less than 0.5 failures per million hours of operation.APRIL 29, 2009 SUBJECT
31、268B 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULTable 4.1Capacitor derating parametersType Derating parameter Derating levelaMica, film, glass Normal operating DC voltage 60 percentTemperature from maximum limit 10CCeramic Normal operati
32、ng DC voltage 60 percentTemperature from maximum limit 10CElectrolytic aluminum Normal operating DC voltage 80 percentTemperature from maximum limit 20CElectrolytic titanium Normal operating DC voltage 60 percentTemperature from maximum limit 20CSolid tantalum Normal operating DC voltage 60 percentT
33、emperature from maximum limit 85CaPercent of derated value to the rated normal operating DC voltage.4.5.3 Failure of a cooling fan motor which would result in product temperatures exceeding those in Tables43.1 and 43.2 shall be indicated by a trouble signal.4.5.4 When the off-normal position of any
34、normally preset mechanism or similar part of a product requiresmanual restoration in order to permit normal signaling performance of the system, such position shall beindicated by an trouble signal.4.5.5 To determine if a switching part of a product complies with 4.5.4, the investigation is to start
35、 withthe representative system combination in the normal supervisory condition; the system is then to beoperated for signals with the manual-switching part in each position.4.5.6 When a product is controlled and influenced by a software program, a trouble signal shall activatefor the occurrence of a
36、ny of the following malfunctions:a) The product/system does not execute its program cycle,b) The memory function of the microprocessor does not function or is corrupted,c) A power-supply output upon which the operation of the stored program relies (such as lossof power to a microprocessor, memory, d
37、isk supply, or the like) ceases to operate, ord) Rotation ceases, or fails to start when required, in a product that incorporates permanentmemory-storage devices having rotating elements.Exception: Supervision is not required when malfunction of the memory-storage device results only inloss of suppl
38、ementary information or features, and when the system is still capable of indicating the natureand location of any status change.APRIL 29, 2009SUBJECT 268B8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL5 Installation and Operating Instructio
39、nsSee the US requirements in Section 5 in the Standard for Smoke Detectors for Fire Alarm Systems, UL268.CONSTRUCTIONSee the US requirements in Sections625intheStandard for Smoke Detectors for Fire Alarm Systems,UL 268.26 SpacingsIn addition to the US requirements in sub-clauses 26.1 26.6 in the Sta
40、ndard for Smoke Detectors forFire Alarm Systems, UL 268, the following apply.26.7 Tests and analysis26.7.1 Samples are to be subjected to analysis and tests as specified in Table 26.3but are not requiredto be completed in the sequential order unless otherwise noted within the specified clause.Table
41、26.3Detector Tests and AnalysisSpot type Projected beam Air sampling Video image28 Normal Operation Test X X X X28.3 Sensitivity shift criteria X X29 Electrical Supervision Test X X X X29.1 General X X X29.2 Component Failure X X A A29.3 Photocell illuminatinglamps and light-emittingdiodes (LEDs)XX3
42、0 Sensitivity Test X X30.7 Sensitivity test feature X X31 Directionality Test X32 Velocity-sensitivity Test X35 Reduction in Light OutputTestXX36 Stability Test X X X X37 Test for Effect of AirVelocityX38 Fire Tests X X X X38.2 Paper fire X X X X38.3 Wood fire X X X X38.3 Wood fire X X X X39 Smolder
43、ing Smoke Test X X X X40 Smoldering Smoke Test -Maximum ObscurationWithout AlarmXXX41 Circuit Measure Test X X X X42 Overvoltage andUndervoltage TestsXXX42.1 Overvoltage test X X X XAPRIL 29, 2009 SUBJECT 268B 9Table 26.3 Continued on Next PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRO
44、DUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULTable 26.3 ContinuedSpot type Projected beam Air sampling Video image42.2 Undervoltage test X X X X43 Temperature Test X X X X44 Vibration Test X X X X46 Jarring Test X X X X47 Variable AmbientTemperature TestsXXX47.1 Operation in high andlow ambients
45、47.2 Effect of shipping andstorageXXXX48 Humidity Test X X X X49 Corrosion Tests X X X X50 Transient Tests X X X X50.2 Internally inducedtransientsXXX50.3 Extraneous transients X X X50.4 Supply line (hazardous-voltage) transients50.5 Supply line (extra-low-voltage circuit) transientsXXX51 Static Dis
46、charge Test X X X X52 Dust Test X X X X53 Overload Tests X X X X53.1 Detector X X X X53.2 Separately energizedcircuitsXXX54 Endurance Test X X X X54.1 X X X X54.2 X X X X58 Dielectric Voltage-Withstand TestXXX59 Polarity Reversal Test X X X X60 Tests on PolymericMaterials60.2 Temperature test X X X
47、X60.3 Flame test 19 mm(3/4-inch)XXX60.4 Flame test 127 mm(5-inch)61 Strain Relief Test X X X X63 Survivability Test X (head only)65.2 Maintenance(cleanability)XXXA Component Reliability per Section 4.5APRIL 29, 2009SUBJECT 268B10UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTR
48、IBUTION WITHOUT PERMISSION FROM ULPERFORMANCE27 GeneralSee the US requirements in Section 27 in the Standard for Smoke Detectors for Fire Alarm Systems, UL268.28 Normal operation test28.1 General28.1.1 A detector shall operate for all conditions of its intended performance, at all sensitivity settin
49、gs,when used in conjunction with any related power supply or control unit with which it is intended to beemployed, and with indicating devices used to form the system combination covered both by theinstallation wiring diagram and by any supplementary information provided.28.1.2 The test voltage is to be in accordance with 27.2.1 and the detector is to be in the standbycondition and prepared for its intended signaling operation when it is connected to related devices andcircuits.28.1.3 The introduction of smo
