1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULAUGUST 9, 20171UL 498BOutline of Investigation for Receptacles with Integral Switching MeansIssue Number: 4August 09, 2017Summary of TopicsThis is the third issue of the Outline of Investigation
2、for Receptacles withIntegral Switching Means, UL 498B. This new issue clarifies the following:Clarified Insulating material requirementsAdded the word CONTROLLED to required markings inSupplement SAAdded Input TestAdded Overvoltage and Undervoltage testULs Outlines of Investigation are copyrighted b
3、y UL. Neither a printed norelectronic copy of an Outline of Investigation should be altered in any way. All ofULs Outlines of Investigation and all copyrights, ownerships, and rights regardingthose Outlines of Investigation shall remain the sole and exclusive property of UL.COPYRIGHT 2017 UL LLCUL C
4、OPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULAUGUST 9, 2017UL 498B2No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONTENTSINTRODUCTION1 Scope .62 Components 73 Units
5、of Measurement 74 Undated References 85 Glossary 8CONSTRUCTION6 General 117 Configurations 118 Accessibility of Live Parts 119 Current-Carrying Parts .1310 Internal Wiring .1311 Internal Splices and Connections 1311.1 General .1311.2 Wire-wrapped connections 1411.3 Wiring terminals and leads 1512 Se
6、paration of Circuits .1513 Insulating Material 1714 Printed-Wiring Boards 1715 Components .1815.1 Switching devices 1815.2 Capacitors .1815.3 Power-switching semiconductors .1915.4 Isolation devices .1916 Transformers 1916.1 General .1916.2 Isolation transformers .2017 Spacings 2118 Alternate Spacin
7、gs Clearances and Creepage Distances 2319 Bonding of Internal Parts for Grounding .2420 Class 2 Circuits 2421 Class 2 Separable Lead Assembly 27PERFORMANCE22 General .2822A Input Test 2822B Overvoltage and Undervoltage Test .2823 Temperature Test 2923.1 General .2923.2 Operation .3023.3 Temperature
8、measurements .3024 DC Offset Voltage Test .3125 Abnormal Operation Test .3225.1 Motor .3225.2 Component failure 3225.3 Abnormal switching test .33AUGUST 9, 2017 UL 498B 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL26 Limited Power Point De
9、termination Test 3426.1 General .3426.2 Option No. 1 .3426.3 Option No. 2 .3626.4 Component failure 3626.5 Overload test 3727 Isolation Tests 3827.1 General .3827.2 Pulse transformer burnout tests 3927.3 Optical isolator tests 4027.4 Component failure 4128 Power-Switching Semiconductors 4128.1 Gener
10、al .4128.2 Overload test 4228.3 Endurance 4329 Voltage Surge Test .4430 Power Supplies Short circuit 4631 Component Failure Test .4732 Electronic Component Evaluation 4733 Dielectric Voltage-Withstand Test .4833.1 General .4833.2 Primary circuits 4833.3 Isolated secondary circuits 4933.4 Transformer
11、s 50MANUFACTURING AND PRODUCTION LINE TESTS34 DC Offset Voltage Test 51RATING35 Details .5135.1 Input 5135.2 Output 5135.3 Operational ambient temperature .52MARKINGS36 General 5237 Installation Instructions 53SUPPLEMENT SA - RECEPTACLES WITH INTEGRAL SWITCHING MEANS INTENDED FORENERGY MANAGEMENT AN
12、D BUILDING AUTOMATIONINTRODUCTIONSA1 Scope .SA1AUGUST 9, 2017UL 498B4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONSTRUCTIONSA2 General SA1SA3 Electrical Rating SA1PERFORMANCESA4 General SA2SA5 Overload Test .SA2SA6 Endurance Test .SA4RAT
13、INGSA7 Details .SA7SA7.1 Input .SA7SA7.2 Output .SA8MARKINGSSA8 Details .SA8INSTALLATION INSTRUCTIONSSA9 General .SA11APPENDIX AStandards for ComponentsA1AUGUST 9, 2017 UL 498B 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULINTRODUCTION1 Sco
14、pe1.1 These requirements cover a receptacle with integral switching means rated 600 V or less, used inordinary dry locations and intended for connection to a branch circuit in accordance with the NationalElectrical Code, NFPA 70.1.2 A receptacle with integral switching means covered by this Outline
15、shall meet the followingrequirements:a) No voltage greater than 600 V above ground will be present in the device,b) An isolation transformer, if provided, will generally furnish power at a lower potential than theprimary voltage; andc) The output of the device will not be located in a circuit operat
16、ing at greater than 600 Vabove ground.d) The switching device shall be integral to the receptacle.e) A receptacle that is marked with the symbol shown in Table SA8.1 Reference No. 2 anddoes not employ an integral switching means intended for energy management and buildingautomation, are covered by t
17、he Standard for Attachment Plugs and Receptacles, UL 498.1.3 This Outline does not directly apply to, but may supplement the following standards:a) Devices produced integrally with flexible cord or cable, covered by the Standard for CordSets and Power-Supply Cords, UL 817;b) Current taps and adapter
18、s covered by the Standard for Current Taps and Adapters, UL498A;c) Devices employing male or female screwshells, covered by the Standard for Lampholders,UL 496;d) Single and multipole connectors intended for factory assembly to copper or copper alloyconductors or printed wiring boards for use in dat
19、a, signal, control and power applications withinand between electrical equipment, covered by the Standard for Component Connectors forData, Signal, Control and Power Applications, UL 1977;e) Devices intended for installation and use in hazardous (classified) locations in accordancewith the National
20、Electrical Code, NFPA 70, covered by the Standard for Explosion-Proof andDust-Ignition-Proof Equipment for Use in Hazardous (Classified) Locations, UL 1203;f) Devices intended for use with telecommunications networks, covered by the Standard forInformation Technology Equipment Safety Part 1: General
21、 Requirements, UL 60950-1, orthe Standard for Communications Circuit Accessories, UL 1863;g) Devices incorporating ground-fault circuit interruption circuitry, covered by the Standard forGround-Fault Circuit Interrupters, UL 943;AUGUST 9, 2017UL 498B6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHE
22、R REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULh) Direct plug-in devices incorporating transient voltage surge suppression circuitry, covered bythe Standard for Surge Protective Devices, UL 1449;i) Direct plug-in devices incorporating electromagnetic interference filter circuitry, covered b
23、y theStandard for Electromagnetic Interference Filters, UL 1283;j) Cord-connected, relocatable power taps intended only for indoor use as a temporaryextension of a grounding alternating-current branch circuit for general use, covered by theStandard for Relocatable Power Taps, UL 1363.k) Energy manag
24、ement equipment covered by the Standard for Energy ManagementEquipment, UL 916.2 Components2.1 Except as indicated in 2.2, a component of a product covered by this Outline shall comply with therequirements for that component. See Appendix A for a list of standards covering components generallyused i
25、n the products covered by this Outline.2.2 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.2.3 A
26、component shall be used in accordance with its rating established for the 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 temperatur
27、es notexceeding specified limits, and shall be used only under those specific conditions.3 Units of Measurement3.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory orapproximate information.3.2 Unless indicated otherwise, voltage and current values specifi
28、ed in this Outline are rms, and wattagevalues are average power.AUGUST 9, 2017 UL 498B 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL4 Undated References4.1 Any undated reference to a code or standard appearing in the requirements of this O
29、utline shall beinterpreted as referring to the latest edition of that code or standard.5 Glossary5.1 For the purpose of this Outline the following definitions apply:5.2 CLASS 2 CIRCUIT An isolated secondary circuit involving a potential of not more than 42.4 Vpeak supplied by:a) An inherently-limite
30、d Class 2 transformer;b) A combination of an isolated transformer secondary winding and a fixed impedance orregulating network that together comply with the performance requirements for an inherently-limited Class 2 transformer;c) A dry-cell battery having output characteristics not greater than tho
31、se of an inherently-limitedClass 2 transformer;d) Any combination of (a), (b), and (c) that together comply with the performance requirementsfor an inherently-limited Class 2 transformer; ore) One or more combinations of a Class 2 transformer and an overcurrent protective devicethat together comply
32、with the performance requirements for a noninherently-limited Class 2transformer.A circuit derived from a line-connected circuit by connecting impedance in series with the supplycircuit as a means of limiting the voltage and current is not a Class 2 circuit. See Class 2Circuits, Section 20.5.3 CLASS
33、 2 SEPARABLE LEAD ASSEMBLY Consists of a factory-made, power-limited cableassembly provided with a connector, intended for Class 2 signaling between a device such as a sensor,timer or energy-management equipment and a wired controlled receptacle.5.4 CONFORMAL COATING An insulating coating which conf
34、orms to the configuration of the objectcoated and is used as a protective covering against environmental conditions or when electricalspacings are insufficient.5.5 CONTROLLED ENVIRONMENT An environment:a) Relatively free of conductive contaminants, such as normal cooking vapors, carbon dust, andsimi
35、lar contaminants, which are a result of the end-use product in which a control will beinstalled or due to the location of the end-use product, andb) Not subject to humidity and the formation of condensation. A controlled environment isprovided, for example, by means of a:1) Hermetically sealed enclo
36、sure;2) Encapsulation;AUGUST 9, 2017UL 498B8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL3) A conformal coating; or4) A gasketed, tight-fitting enclosure or filter system preventing contamination inconjunction with a system preventing conde
37、nsation for example, the maintaining ofthe surrounding air at constant temperature and a suitably low relative humidity.5.6 DEAD-CASE-MOUNTED SEMICONDUCTOR A semiconductor, such as a triac or silicon-controlled rectifier, employing an integral metal tab or stud that is insulated from live parts.5.7
38、ELECTRICAL STRESS FACTOR For a circuit component, the ratio of operating electrical stressto rated electrical stress. Examples include the ratio of operating wattage to maximum rated wattage ofa resistor and operating voltage to maximum rated voltage of a capacitor. A circuit component havingno assi
39、gned maximum operating electrical rating is made the subject of an investigation.5.8 HAZARDOUS ENERGY Circuit energy that involves a risk of fire or electric shock.5.9 ISOLATED SECONDARY CIRCUIT A circuit derived from an isolated secondary winding of atransformer and that has no direct connection ba
40、ck to the line-connected circuit, other than through thegrounding means. A secondary circuit that has a direct connection back to the line-connected circuit isconsidered part of the line-connected circuit.5.10 LIMITED-ENERGY CIRCUIT A line-connected circuit in which the wattage from any point in the
41、circuit to any return to the power supply is limited to 15 W; or an isolated secondary circuit in which thewattage from any point in the circuit to any return to the power supply is limited to 50 W.5.11 LINE-CONNECTED CIRCUIT A circuit in which the wiring and components are conductivelyconnected to
42、the branch circuit. It is also called a primary or direct-connected circuit. See also 5.9.5.12 OPPOSITE POLARITY A difference in potential between two points, such that shorting of thesetwo points results in a condition involving an overload; rupturing of printed wiring-board-tracks,components, or f
43、uses; or similar condition.5.13 OPTICAL ISOLATOR (PHOTON-COUPLED ISOLATOR) A circuit-coupling device that providescircuit isolation by means of a light source and sensor integrated into a single package.5.14 SAFETY CIRCUIT A primary or secondary circuit that is relied upon to reduce the risk of fire
44、,electric shock, injury to persons, operation of controlled equipment that is capable of resulting in a riskof fire, electric shock, or injury to persons. Examples include an interlock circuit, a circuit which limitsleakage current to accessible parts, a circuit which limits the wattage to a limited
45、-energy circuit, or aphase control or other circuit designed to limit temperatures in the end-use product to acceptable levels.5.15 THYRISTOR A bistable semiconductor device comprised of three or more junctions that can beswitched from the off state to the on state or vice versa, by means of the con
46、trolled conductivity of thesemiconductor, with such switching occurring within at least one quadrant of the principal voltage-current characteristics. Such switching includes random switching in which conduction occurs at anyphase angle of the alternating current load voltage cycle or regulated swit
47、ching in which conductionoccurs at some precise phase angle or load-voltage magnitude. A phase-controlled semiconductordevice is one in which the semiconductor conducts for some portion of the load-voltage cycle.a) BIDIRECTIONAL TRIODE THYRISTOR (TRIAC) A three-terminal thyristor havingsubstantially
48、 the same switching behavior in the first and third quadrants of the principalvoltage-current characteristics.AUGUST 9, 2017 UL 498B 9UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULb) SILICON-CONTROLLED RECTIFIER (SCR) A reverse blocking trio
49、de thyristor. A three-terminal thyristor that conducts only for positive anode-to-cathode voltages and exhibits areverse blocking state for negative anode-to-cathode voltages.5.16 TRANSFORMER The term includes a motor-transformer or an autotransformer. For thepurpose of these requirements, the types of transformers typically encountered in or supplying power tocontrols are:a) Class2Anisolation type transformer as specified in the Standard for Low VoltageTransformers Part 1: General Requirements, UL 5085-1, and the Standard for Low
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