1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULMay 31, 20061SUBJECT 2422OUTLINE OF INVESTIGATIONFORULTRAVIOLET CURING EQUIPMENT FOR COMMERCIAL USEIssue Number: 2May 31, 2006Summary of TopicsThis second issue of the Outline of Investigation fo
2、r Ultraviolet CuringEquipment for Commercial Use, Subject 2422, is issued to replace thereference to UL 1020, the Standard for Thermal Cutoffs for Use inElectrical Appliances and Components, with reference to UL 60691, theStandard for Thermal-Links Requirements and Application Guide. UL1020 was with
3、drawn and superseded by UL 60691.The UL Foreword is no longer located within the UL Standard. For informationconcerning the use and application of the requirements contained in thisStandard, the current version of the UL Foreword is located onULStandardsInfoNet at: http:/ 2006 UNDERWRITERS LABORATOR
4、IES INC.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULMAY 31, 2006SUBJECT 24222No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONTENTSINTRODUCTION1 Scope .52 Compo
5、nents 53 Units of Measurement .64 References .65 Glossary .6CONSTRUCTION6 General 77 Frame and Enclosure 77.1 General .77.2 Lamp compartment 148 Assembly .159 Corrosion Protection .1510 Resistance of Components to Degradation from Ultraviolet Radiation .1511 Cord Connected Equipment 1611.1 General .
6、1611.2 Strain relief 1711.3 Push-back relief 1712 Live Parts 1813 Internal Wiring 1813.1 General .1813.2 Protection of wiring .1913.3 Splices and connections 1913.4 Interconnecting cord and cable 2013.5 Separation of circuits .2114 Electrical Insulation .2115 Thermal Insulation 2216 Overcurrent Prot
7、ection 2217 Transformer Overcurrent Protection .2218 Thermal Cutoffs 2319 Lampholders .2320 Spacings 2321 Grounding .2422 Switches .2423 Protection Against Injury to Persons 2523.1 General .2523.2 Exposure to ultraviolet radiation 2523.3 Medium- and high-pressure lamps 2524 Protective Eyewear .26PER
8、FORMANCE25 General 2626 Ultraviolet Irradiance Test 2627 Power Input Test .2728 Leakage Current 2729 Temperature Test .30MAY 31, 2006 SUBJECT 2422 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL30 Test Leakage Current as a Result of Moisture
9、 3431 Dielectric Voltage-Withstand Test .3432 Mechanical Endurance Test 3533 Ball Impact .3534 Abnormal Operation Test 3734.1 General .3734.2 Hot restrike test 3835 Strain Relief Test .3836 Push-Back Relief Test .3837 Stability 3838 Push Test 3939 Lamp Rupture Test .39MANUFACTURING AND PRODUCTION-LI
10、NE TESTS40 Production-Line Dielectric Voltage-Withstand Test 3941 Grounding and Polarization Continuity Tests .4141.1 Grounding continuity test 4141.2 Polarization continuity test .41RATINGS42 Details .41MARKINGS43 General 4244 Cautionary Markings 43INSTRUCTION MANUALS45 General 4446 Instructions Pe
11、rtaining to Risk of Fire, Electric Shock, or Injury to Persons .4547 Training Instructions .4748 Operating Instructions .4749 User-Maintenance Instructions .4850 Moving and Storage Instructions 48Appendix AStandards for ComponentsA1MAY 31, 2006SUBJECT 24224UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR
12、FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULINTRODUCTION1 Scope1.1 These requirements cover ultraviolet curing equipment rated at 240 V or less for professionalcommercial indoor use in a dedicated, isolated, or restricted area, accessed only by qualified professionaloperators.1.2 T
13、hese products are intended for use in accordance with the Federal Radiation Control for Health andSafety Act of 1968, the Federal Food, Drug and Cosmetic Act, and the Code of Federal Regulations, Part1040, 21 CFR, Chapter 1, Subchapter J, Radiological Health.1.3 These products are intended only for
14、use in a restricted access area, or an area which incorporatessuitable site protection to prevent unintended exposure of untrained or unqualified persons to ultravioletradiation. It is the responsibility of the designated parties at the final installation site to confirm that properinstallation, tra
15、ining and control means have been implemented.1.4 These products are intended to be operated only in the presence of qualified professional operatorswho have been trained on mandatory operation procedures for proper use of the equipment.1.5 The physiological effects of the ultraviolet radiation emit
16、ted by this equipment have not beenevaluated. The physiological effects of substances used in lamps employed in these products have notbeen evaluated. Compatibility of the curing equipment with materials and the physiological effects of anyby-products of the curing process have not been evaluated.1.
17、6 These requirements do not cover electric heating or drying equipment. Such equipment is covered inthe Standard for Electric Heating Appliances, UL 499, and Electrical Equipment for Laboratory Use: Part1: General Requirements, UL 61010A-1.2 Components2.1 Except as indicated in 2.2, a component of a
18、 product covered by this outline of investigation shallcomply with the requirements for that component. See Appendix A for a list of standards coveringcomponents generally used in the products covered by this outline of investigation.2.2 A component is not required to comply with a specific requirem
19、ent that:a) Involves a feature or characteristic not required in the application of the component in theproduct covered by this outline of investigation, orb) Is superseded by a requirement in this outline of investigation.2.3 A component shall be used in accordance with its rating established for t
20、he intended conditions ofuse.2.4 Specific components are incomplete in construction features or restricted in performance capabilities.Such components are intended for use only under limited conditions, such as certain temperatures notexceeding specified limits, and shall be used only under those sp
21、ecific conditions.MAY 31, 2006 SUBJECT 2422 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL3 Units of Measurement3.1 Unless indicated otherwise all voltage and current values mentioned in this Outline of Investigationare root-mean-square (rm
22、s).3.2 Values stated without parentheses are the requirement. Values in parentheses are explanatory orapproximate information.4 References4.1 Any undated reference to a code or standard appearing in the requirements of this standard shall beinterpreted as referring to the latest edition of that code
23、 or standard.5 Glossary5.1 For the purpose of this Outline of Investigation, the following definitions apply.5.2 CONTAINED ATMOSPHERIC ENERGY (CAE) The energy calculated as follows:CAE = 0.15 (PC PE) Vin which:PC is the contained pressure in atmospheres;PE is the external pressure in atmospheres; an
24、dV is the volume in cubic centimeters.5.3 CRITICAL FAILURE A failure of a component or circuit that results in a condition, such as a riskof fire, electric shock, or injury to persons.5.4 DEACTIVATED LAMP A lamp in the end-of-life failure mode, resulting from the depletion of thefilament emission ma
25、terial so that the lamp cannot be ionized.5.5 HIGH-PRESSURE LAMP A lamp in which the Contained Atmospheric Energy (CAE) equals orexceeds 3.7 lbf-ft (5 J) cold at (50C (122F) or less).5.6 IRRADIANCE The radiant-power-incident on a surface at a specified location and orientationrelative to the radiati
26、ng surface, divided by the area of the surface, as the area becomes vanishinglysmall, expressed in units of watts per square centimeter (W/cm2) or watts per square inch (W/in2).5.7 MEDIUM-PRESSURE LAMP A lamp in which the Contained Atmospheric Energy (CAE) isgreater than 0.37 lbf-ft (0.5 J) and less
27、 than 3.7 lbf-ft (5 J).5.8 MEASUREMENT INDICATION UNIT (MIU) The output voltage across the leakage-current meter,in mV divided by 500 ohms. The instrument indication is equal to the rms value in mA when thefrequency is 60 Hz (sinusoidal current). The reading may not be a direct indication of the rms
28、 or othercommon amplitude quantifier of leakage current when the leakage current is of complex waveform orfrequency other than 50 or 60 Hz.MAY 31, 2006SUBJECT 24226UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL5.9 QUALIFIED PROFESSIONAL OPER
29、ATOR A professional person having appropriate technicaltraining and experience to be aware of risks to which the operator may be exposed in performing a taskand the measures to be taken to minimize the risks for the operator and other persons.5.10 RESTRICTED ACCESS AREA A location for equipment wher
30、e both of the following apply:a) Access can only be gained by service personnel or qualified professional operators whohave been instructed about the reasons for the restrictions applied to the location and about theprecautions that must be taken; andb) Access is controlled through effective means o
31、f security by the authority responsible for thelocation.5.11 SPECTRAL TRANSMITTANCE The spectral irradiance transmitted through protective eyeweardivided by the spectral irradiance incident on the protective eyewear.5.12 ULTRAVIOLET CURING EQUIPMENT Equipment that directly generates ultraviolet radi
32、ation forthe purpose of curing paint, primer, or similar ultraviolet-sensitive compounds.5.13 USER See Qualified Professional Operator (5.9).CONSTRUCTION6 General6.1 Equipment intended for use in a Hazardous Location as defined in the National Electrical Code(NEC), NFPA 70, shall comply with the req
33、uirements in this Outline of Investigation and additionalexamination and tests to determine acceptability for use in Hazardous Locations.6.2 Only materials that are acceptable for the particular use shall be used in this equipment. Ultravioletcuring equipment shall be made and finished with the degr
34、ee of uniformity and grade of workmanshippracticable in a well-equipped factory.7 Frame and Enclosure7.1 General7.1.1 The frame and enclosure of ultraviolet curing equipment shall be constructed to resist the abusesencountered during intended use. The construction shall preclude total and partial co
35、llapse with theattendant reduction of spacings, loosening or displacement of parts, and other defects, which alone or incombination constitute a risk of fire, electric shock, or injury to persons.7.1.2 The equipment shall be provided with an enclosure of material acceptable for the application. Thee
36、nclosure shall house all electrical parts, other than a supply cord, that involve a risk of fire, electric shock,or injury to persons under any condition of use.MAY 31, 2006 SUBJECT 2422 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL7.1.3 A
37、mong the factors to be considered when determining the acceptability of an enclosure are:a) Physical strength;b) Resistance to impact;c) Moisture-absorptive properties;d) Flammability;e) Resistance to corrosion;f) Resistance to distortion at temperatures to which the enclosure is subjected under con
38、ditionsof intended use;g) For a nonmetallic enclosure exposed to ultraviolet radiation, resistance to degradation fromexposure to ultraviolet radiation;h) For a nonmetallic enclosure, all of the factors are to be considered with respect to thermalaging; andi) For a sheet-metal enclosure, in addition
39、 to the factors in (a) (f), the size and shape of themetal, the thickness of the metal, and the conditions of intended use.7.1.4 Cast- and sheet-metal portions of the enclosure shall not be thinner than indicated in Table 7.1unless the enclosure is investigated and found acceptable in accordance wit
40、h 7.1.3.Table 7.1Minimum acceptable thicknesses of enclosure materialMetal At small, flat, unreinforcedsurfaces and at surfaces that arereinforced by curving, ribbingand the like or are otherwise of ashape and/or size to providephysical strengthAt surfaces to which a wiringsystem is to be connected
41、in thefieldAt relatively large unreinforcedflat surfacesinches (mm) inches (mm) inches (mm)Die-cast 3/64 (1.2) 5/64 (2.0)Cast malleableIron1/16 (1.6) 3/32 (2.4)Other cast metal 3/32 (2.4) 1/8 (3.2)Uncoated sheetsteel0.026a(0.66)a0.032 (0.81) 0.026 (0.66)Galvanizedsheet steel0.029a(0.74)a0.034 (0.86)
42、 0.029 (0.74)Nonferroussheet metal0.036a(0.91)a0.045 (1.14) 0.036 (0.91)aThinner sheet metal may be employed if found to be acceptable when the enclosure is judged under considerations such asthose mentioned in 7.1.3.7.1.5 Electrical parts shall be located or enclosed so that protection against unin
43、tended contact withuninsulated live parts is provided.MAY 31, 2006SUBJECT 24228UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL7.1.6 The enclosure shall be such that molten metal, burning insulation, flaming particles, or similarmaterial is no
44、t likely to fall on combustible materials, including the surface upon which the enclosure issupported.7.1.7 The requirement in 7.1.6 necessitates use of a barrier of metal, phenolic, urea, ceramic, or similarmaterial under wiring, unless the wiring complies with the VW-1 (Vertical-Specimen) Flame Te
45、st in theReference Standard for Electrical Wires, Cables, and Flexible Cords, UL 1581.7.1.8 The barrier specified in 7.1.7 shall be horizontal, shall be located as shown in Figure 7.1, and shallnot have an area less than that prescribed in Figure 7.1. Openings for drainage, ventilation, and similaro
46、penings may be employed if molten metal, burning insulation, flaming particles, or similar material, is notlikely to fall through the opening onto combustible material.This is generated text for figtxt.MAY 31, 2006 SUBJECT 2422 9UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTR
47、IBUTION WITHOUT PERMISSION FROM ULFigure 7.1Location and extent of barrierNOTES A Region to be shielded by barrier. This will consist of the entire component if it is not otherwise shielded and will consist of theunshielded portion of a component that is partially shielded by the component enclosure
48、 or equivalent.B Projection of outline of component on horizontal plane.C Inclined line that traces out minimum area of barrier. The line is always:1) Tangent to the component,2) 5 degrees from the vertical, and3) So oriented that the area traced out on a horizontal plane is maximum.D Location (hori
49、zontal) and minimum area for barrier. The area is that included inside the line of intersection traced out by theinclined line C and the horizontal plane of the barrier.MAY 31, 2006SUBJECT 242210UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL7.1.9 The requirement in 7.1.6 necessitates that a switch, transformer, relay, solenoid, or similarcomponent be individually and completely enclosed other than at terminals, unless th
