1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULJuly 26, 20131UL 334Outline Of InvestigationForTheater Lighting Distribution and Control EquipmentIssue No. 1July 26, 2013Summary of TopicsThis is the First issue of the Outline of Investigation
2、for Theater LightingDistribution and Control Equipment, UL 334, which covers lightingdistribution equipment and lighting dimming and switching equipmentnominally rated 600 V or less intended for use in theaters, motion pictureand television studios, performance stages, theatrical areas of assemblyoc
3、cupancies and similar locations in accordance with the NationalElectrical Code (NEC), ANSI/NFPA 70.COPYRIGHT 2013 UNDERWRITERS LABORATORIES INC.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULJULY 26, 2013UL 3342No Text on This PageUL COPYRIGH
4、TED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONTENTSINTRODUCTION1 Scope .72 General 72.1 Anticipated users .72.2 Anticipated use environments 82.3 Use of referenced standards .82.4 Undated references .92.5 Units of measurement .93 Glossary .9PART 1 A
5、LL EQUIPMENTCONSTRUCTION4 Components 114.1 General 114.2 Optical isolators .114.3 Capacitors bridging insulation .124.4 Power-Switching Semiconductors (Mounted to Accessible Metal Parts) 125 Frame and Enclosure 126 Output Overcurrent Protection .126.1 General 126.2 Current interrupting rating of loa
6、d circuit breakers .137 Dimming Circuits .147.1 Phase control dimming circuits 147.2 Load short-circuit sensing 147.3 Sine-wave output dimming circuits .14PERFORMANCE8 D-C Offset Test 14RATINGS9 Input Rating .1510 Load Rating 15MARKINGS11 MARKINGS 1511.1 General .1511.2 Details 16JULY 26, 2013 UL 33
7、4 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULPART II DIMMER RACKSCONSTRUCTION12 Supply Termination .1612.1 3-Phase to single-phase conversion 1612.2 Control modules 1612.3 Interfaces with emergency lighting systems 1612.4 Patch panels 17
8、PERFORMANCE13 General 17RATINGS14 Short circuit current .18MARKINGS15 General 18PART III DIMMER MODULESCONSTRUCTION16 General 1817 Constant-On Modules .1818 Non-Dimming Modules 1819 Relay Modules .19PERFORMANCE20 General 1921 Reserved for Future Use 1922 Reserved for Future Use 1923 Reserved for Fut
9、ure Use 1924 Reserved for Future Use 1925 Reserved for Future Use 1926 Reserved for Future Use 1927 Reserved for Future Use 19RATINGS28 Short Circuit Current Interrupting Rating .1929 Reserved for Future Use 2030 Reserved for Future Use 2031 Reserved for Future Use 2032 Reserved for Future Use 2033
10、Reserved for Future Use 2034 Reserved for Future Use 2035 Reserved for Future Use 2036 Reserved for Future Use 20JULY 26, 2013UL 3344UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULMARKINGS37 General 2038 Reserved for Future Use 2039 Reserved
11、for Future Use 2040 Reserved for Future Use 2041 Reserved for Future Use 2042 Reserved for Future Use 2043 Reserved for Future Use 2044 Reserved for Future Use 2045 Reserved for Future Use 2046 Reserved for Future Use 2147 Reserved for Future Use 2148 Reserved for Future Use 21PART IV ROLLING RACKSC
12、ONSTRUCTION49 General 2150 Input Connections 2150.1 General .2151 Output Connections .2252 Patch Panels .22PERFORMANCE53 General 22RATINGS54 General 23MARKING55 Details .23PART V DIMMER PACKSCONSTRUCTION56 Input Configurations .2357 Output Configurations .2458 Reserved for Future Use 2459 Reserved f
13、or Future Use 2460 Reserved for Future Use 2461 Reserved for Future Use 2462 Reserved for Future Use 2463 Reserved for Future Use 24PERFORMANCE64 General 24JULY 26, 2013 UL 334 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULRATINGS65 General
14、 24MARKING66 General 24PART VI SINGLE CHANNEL DIMMERSCONSTRUCTION67 Input Connections 2568 Output Configurations .25PERFORMANCE69 General 26RATING70 General 26MARKING71 General 26PART VII WIREWAY DIMMERSCONSTRUCTION72 General 2773 Output Configurations .27PERFORMANCE74 General 28RATING75 General 28M
15、ARKING76 General 28JULY 26, 2013UL 3346UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULINTRODUCTION1 Scope1.1 This Outline applies to lighting distribution equipment and lighting dimming and switching equipmentnominally rated 600 V or less int
16、ended for use in theaters, motion picture and television studios,performance stages, areas of assembly occupancies and similar locations in accordance with Articles518, 520, 525 and 530 of the National Electrical Code (NEC), ANSI/NFPA 70. Equipment within the scopeof this Outline includes:a) Theater
17、 switchboards with or without dimming modules;b) Dimmer modules for use within theater switchboards; andc) Enclosed dimmers for direct connection to the supply and lighting circuits.d) Enclosed wireway dimmers mounted on rigging (a network of lines and chains used forsupport and manipulation of scen
18、ery and equipment) or to the building structure above oradjacent to the luminaires it supplies.1.2 These requirements do not cover portable power distribution equipment addressed by the Standardfor Portable Power Distribution Equipment, UL 1640.1.3 These requirements do not cover units intended to p
19、rovide only the low-voltage control signals tooperate theater luminaire switching and dimming equipment.1.4 These requirements do not cover luminaire dimming or switching equipment intended for residentialor commercial (building architectural) installation and use addressed by the Standard for Indus
20、trial ControlEquipment, UL 508.2 General2.1 Anticipated users2.1.1 These requirements anticipate three primary use environments for these products:a) Use in theaters, motion picture, television studios and the like by qualified personnel only(e.g. Certified Entertainment Electricians) in areas where
21、 access by the general public isrestricted. Such use anticipates continuous monitoring during use.b) Use by educational institutions where the power needs are limited and the anticipated userexpertise is likely limited only to basic understanding of the fire, electric shock and casualtyrisks involve
22、d. These users are under the supervision of those trained in entertainment work.Use is in areas where access by the general public cannot be totally restricted.c) Use in theatrical areas of assembly occupancies by qualified personnel only (e.g. CertifiedEntertainment Electricians) in areas where acc
23、ess by the general public is restricted.JULY 26, 2013 UL 334 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL2.2 Anticipated use environments2.2.1 Except as noted in Exception Nos. 1 and 2 of (a), the installation and use environment is assum
24、edto be:a) Pollution Degree III conductive pollution or dry, nonconductive pollution that becomesconductive due to condensation that is expected.Exception No. 1: Permanently installed units marked to require a Pollution Degree II environmentin accordance with 11.2.1.1.Exception No. 2: Internal micro
25、-environments created in accordance with means specified ineither the Standard for Insulation Coordination Including Clearances and Creepage Distances forElectrical Equipment, UL 840 or the Standard for Industrial Control Equipment, UL 508.b) Overvoltage Category III All units intended for permanent
26、 connection to the supply. Thisincludes dimmer packs and includes Rolling Racks.c) Overvoltage Category II All portable units except Rolling Racks.2.3 Use of referenced standards2.3.1 This Outline is not intended to contain all requirements applicable to this class of product. It isintended to be us
27、ed in conjunction with other UL standards adding to and amending requirements asneeded. The overall requirements for theater luminaire dimming equipment can be summarized asfollows:a) Parts of units operating at greater than 100 amps use requirements for dead-frontswitchboards specified in the Stand
28、ard for Switchboards, UL 891.b) Parts of units operating at 100 amps or less use requirements for industrial controlequipment specified in the Standard for Industrial Control Equipment, UL 508.c) Parts of units intended for portable wiring connections use requirements specified in theStandard for Po
29、rtable Power Distribution Equipment, UL 1640.JULY 26, 2013UL 3348UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL2.4 Undated references2.4.1 Any undated reference to a code or standard appearing in the requirements of this Outline shall beinte
30、rpreted as referring to the latest edition of that code or standard.2.5 Units of measurement2.5.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory orapproximate information.2.5.2 All applicable alternating-current electrical measurements are in root-mean-s
31、quare (rms) unitsunless otherwise stated.3 Glossary3.1 For the purposes of this Outline, the following definitions apply. These are intended to supplementthose in the Standard for Industrial Control Equipment, UL 508, the Standard for Switchboards, UL 891and Parts of units intended for portable wiri
32、ng connections use requirements specified in the Standard forPortable Power Distribution Equipment, UL 1640.3.2 CAPACITOR, CLASS X Capacitor or RC unit of a type suitable for use in situations where failureof the capacitor or RC unit would not lead to danger of electrical shock but could result in a
33、 risk of fire.Examples would be units connected phase to phase or phase to neutral.Notes:a) X1 capacitors are generally used in circuits of permanently connected appliances. However, if theappliance is provided with a separate surge protective device that limits the impulse voltage to 2.5KV,an X2 ca
34、pacitor is permitted.b) X2 capacitors are generally used in circuits of cord-connected appliances.3.3 CAPACITOR, CLASS Y Capacitor or RC unit of a type suitable for use in situations where failureof the capacitor could lead to danger of electric shock. Examples would be capacitors connected acrossth
35、e primary and secondary circuits where electrical isolation is required to prevent an electric shock orbetween hazardous live parts and accessible parts.Notes:a) Y1 capacitors are used in circuits where the prevention of electric shock is afforded solely by theisolation provided by the capacitor. Tw
36、o Y2 capacitors connected in series is considered to provide thesame level of protection as one Y1 capacitor.b) Y2 capacitors are used where the prevention of electric shock is provided by the combination of thecapacitor and earth ground for circuits operating at voltages 150V and 300V.c) Y4 capacit
37、ors are used where the prevention of electric shock is provided by the combination of thecapacitor and earth ground for circuits operating at voltages 150V.3.4 DIMMER MODULE A field installed unit for use in permanent theater dimming racks or rollingracks. Available in a range of current ratings cor
38、responding to circuit breaker ratings, typically 15, 20, 50and 100 amps. Available in a number of functions:JULY 26, 2013 UL 334 9UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULa) Dimmer Solid-state load control.b) Non-dim Solid state On-Off
39、only.c) Constant on Only a circuit breaker with no remote control capability.d) Relay Same as a non-dim, but utilizes a mechanical relay.e) Dummy (Blank) No electrical function. Unit prevents access to internal electrically live partsand may be required for maintenance of proper air-flow of the unit
40、.They are all intended to be installed by qualified personnel. When installed, they complete the electricalenclosure of the permanent or rolling dimmer rack. Units plug-in and may or may not require tools forremoval.3.5 DIMMER PACK An enclosed, multi-channel dimmer. Intended for permanent supply con
41、nectionand also factory configured for field installation of a supply cord. Provided with integral receptacles forload connection or load connection may be through a permanent wiring system. Suitable for single“tabletop” use, wall or truss mounting or in sets mounted in racks.3.6 DIMMER RACK A perma
42、nently installed special use switchboard. Supply connections areintended for permanent wiring systems. Load connection is usually through a permanent wiring systembut may sometimes be through integral receptacles. Usually configured for field installed theaterluminaire dimmer modules. Sometimes cons
43、tructed of sets of Dimmer Packs wired to internal bussing.May be provided with a patch panel to reconfigure the output receptacle connections to the dimmermodules.3.7 ROLLING DIMMER RACK (ROLLING RACK) A large special use portable switchboard. Amodified version of the permanent dimmer rack where the
44、 supply is intended for single conductorfeeders employing single pole connectors and receptacles are provided for load connection. May beprovided with a patch panel to reconfigure the output receptacle connections to the dimmer modules.3.8 SINGLE CHANNEL DIMMER Single channel dimmers provided with r
45、eceptacles or drop cordsfor load connection. Usually provided with either short lengths of supply cord or inlets for supplyconnection. May be configured for permanent supply connection similar to Dimmer Packs.3.9 WIREWAY DIMMER A wireway/dimmer mounted on rigging (a network of lines and chains usedf
46、or support and manipulation of scenery and equipment) or to the building structure above or adjacentto the luminaires it supplies. Receptacles or drop cords are provided for the connection of spotlights,floodlights, and portable striplights that are capable of being mounted to or suspended from the
47、strip.JULY 26, 2013UL 33410UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULPART 1 ALL EQUIPMENTCONSTRUCTION4 Components4.1 General4.1.1 Except as indicated in 4.2, a component of a product covered by this Outline shall comply with therequireme
48、nts for that component.4.1.2 A component is not required to comply with a specific requirement that:a) Involves a feature or characteristic not required in the application of the component in theproduct covered by this Outline, orb) Is superseded by a requirement in this Outline.4.1.3 A component sh
49、all be used in accordance with its rating established for the intended conditions ofuse.4.1.4 Specific components are incomplete in construction features or restricted in performancecapabilities. Such components are intended for use only under limited conditions, such as certaintemperatures not exceeding specified limits, and shall be used only under those specific conditions.4.1.5 Components shall be suitable for the anticipated use environment as specified in 2.2.4.1.6 Components not anticipated by the requirements of this
