1、April 20, 20041SUBJECT 2682OUTLINE OF INVESTIGATIONFORSWITCH-RATED PLUGS AND RECEPTACLESIssue Number: 1APRIL 20, 2004Summary of TopicsThis first issue of the Subject 2682 Outline of Investigation for Switch-Rated Plugs and Receptacles covers non-interlocking plugs, receptacles,power inlets and conne
2、ctors for use in switching applications.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:/ 2004 UNDERWRITERS LA
3、BORATORIES INC.APRIL 20, 2004SUBJECT 26822No Text on This PageCONTENTSINTRODUCTION1 Scope .72 Glossary .83 General 93.1 Components .93.2 Units of Measurement 10CONSTRUCTION4 General .105 Configurations .106 Insulating Material .107 Resistance to Corrosion 128 Enclosures 128.1 General 128.2 Mechanica
4、l Strength .138.3 Nonmetallic enclosures .138.4 Metallic enclosures 138.5 Attachment plugs 138.6 Specific enclosures 139 Current-Carrying Parts 1410 Clearances and Creepage Distances 1411 Accessibility of Live Parts 1512 Grounding (Bonding) and Dead Metal Parts 1713 Grounding (Bonding) Connections 1
5、814 Terminal Parts 1915 Assembly 2015.1 General .2015.2 Mating and Intermateability 2116 Devices Intended to Accommodate a Fuse 2117 Cord or Cable Grip 22PERFORMANCE18 Representative devices 2219 Accelerated Aging 2519.1 Rubber compounds .2519.2 PVC compounds .2520 Comparative Tracking Index .2521 G
6、low Wire .2522 High-Current Arc Resistance to Ignition 2623 Mold Stress Relief 2724 Moisture Absorption Resistance 2825 Humidity .2826 Insulation Resistance 2927 Dielectric Withstand .3028 Conductor Secureness 3129 Cord or Cable Secureness .3230 Impact (Plugs and Connectors) .33APRIL 20, 2004 SUBJEC
7、T 2682 331 Crush .3532 Withdrawal Force .3633 Grounding (Bonding) Path Current 3634 Short Circuit Withstand and Closing .3734.1 General .3734.2 Protective devices 3834.3 Calibration of test circuits 4135 Strength of Insulating Base and Support .4636 Overload .4737 Temperature Rise .4838 Resistance t
8、o Arcing 4839 Horsepower Rated Locked Rotor .4940 Endurance with Load 4941 Electromagnetic (Pilot Contacts) 5042 Polarization Integrity 5143 Resistance to Corrosion .5144 Moisture Resistance 5144.1 Details 5144.2 Marine type (shipboard use) .5244.3 Watertight .5245 Environmental Enclosure Type Desig
9、nators 52RATINGS46 General 52MARKING47 Details .5347.1 Company name, catalog designation, electrical rating .5347.2 Multiple factories .5447.3 Nonconductive mounting means .5447.4 Cautionary marking size .5447.5 AC only devices 5547.6 Enclosure grounded (or bonded) devices 5547.7 Catalog designation
10、 5547.8 Fused devices .5547.9 Locking-type devices .5547.10 Receptacle marking location 5547.11 Wiring information - field wiring terminals .5647.12 Overcurrent protection - motor rated devices .5647.13 Environmental enclosures 5847.14 Moisture-resistant devices 5848 Identification and Marking of Te
11、rminals 5948.1 General .5948.2 Grounded and grounding (or bonding) 5948.3 Other terminals 61APPENDIX AStandards for ComponentsA1APRIL 20, 2004SUBJECT 26824APRIL 20, 2004 SUBJECT 2682 5No Text on This PageThis page intentionally left blank.APRIL 20, 2004SUBJECT 26826INTRODUCTION1 Scope1.1 This standa
12、rd applies to non-interlocking plugs, receptacles, power inlets, and connectors for use inswitching applications, rated up to 800 amperes and up to 600 volts ac or dc, and which may include pilotcontacts. These devices are intended to provide power from branch circuits, or are for direct connectiont
13、o the branch and motor circuit in accordance with the National Electrical Code ANSI/NFPA 70, usingcopper conductors, for use in either indoor or outdoor nonhazardous locations.1.2 This standard does not apply to:a) Single conductor pin and sleeve devices.b) Devices molded integrally with flexible co
14、rd or cable that are covered by the Standard forCord Sets and Power Supply Cords, UL 817.c) General and special use devices, such as attachment plugs, receptacles, cord connectors,inlets, current taps, flatiron and appliance plugs, that are covered by the Standard forAttachment Plugs and Receptacles
15、, UL 498.d) Single and multi-pole connectors intended for connection to copper conductors, for use indata, signal, control and power applications within and between electrical equipment, whereexposed, that are covered by the Standard for Component Connectors for Use in Data, Signal,Control and Power
16、 Applications, UL 1977.e) Products such as branch circuit switches that are covered by the Standard for Enclosed andDead-Front Switches, UL 98.f) Products such as pin and sleeve devices that are not intended for switching applications andare otherwise covered by the Standard for Plugs, Receptacles,
17、and Cable Connectors, of thePin and Sleeve Type, UL 1682.g) Devices intended for use in hazardous (Classified) locations that are covered by theStandard for Receptacle-Plug Combinations For Use in Hazardous (Classified) Locations, UL1010.APRIL 20, 2004 SUBJECT 2682 72 Glossary2.1 For the purposes of
18、 this standard, the following definitions apply:2.2 CONNECTOR (CABLE CONNECTOR) A portable receptacle that is intended to provide power,with means for attachment of flexible cord or cable and not intended for permanent mounting.2.3 CONTACT A conductive element in a component that mates with a corres
19、ponding element toprovide an electrical path.2.4 CONTACT, PILOT A conductive element intended to carry an indicating or controlling signal.2.5 DEAD FRONT A mechanism or design that prevents unintentional exposure or accessibility tolive contacts on the line side of the connector.2.6 DELAYED ACTION A
20、n arrangement that delays the separation of device housings, which isintended to reduce the likelihood of exposure of arcing contacts during the breaking of the circuit whenthe plug is withdrawn.2.7 ENCLOSURE The case or housing into which the insulator and contacts are assembled. Theenclosure syste
21、m may be composed of elements such as outlet boxes, mounting panels, receptacles,plugs, and connectors.2.8 GROUNDING (BONDING) PATH A path between the grounding contact and the groundingterminal or, if the device has no grounding terminal, the point at which the path makes contact with apart of the
22、metal raceway system, such as a box, box cover, or the raceway itself.2.9 GROUNDING TYPE DEVICE A device having a grounding (bonding) path.2.10 INSULATION, ELECTRICAL The insulation necessary for the proper functioning of the productand for basic protection against electrical shock.2.11 INSULATOR Th
23、at portion of a device that provides for separation and support of contacts.2.12 LOCKING RETAINING MEANS A mechanical arrangement that holds a plug or connector inposition when it is in proper engagement and is intended to reduce the likelihood of its unintentionalwithdrawal. It may also facilitate
24、environmental sealing.2.13 MOTOR RATING A rating expressed in horsepower (hp) and/or full load and locked rotorcurrent, and voltage assigned to a device that is intended to control a motor load.2.14 PLUG (ATTACHMENT PLUG) A device intended to receive power when inserted in a receptacleor connector,
25、which establishes connection between conductors of the attached flexible cord or cableand the conductors connected to the receptacle or cable connector.2.15 POWER INLET A permanently mounted plug intended to receive power from a cable connector.2.16 RECEPTACLE (OUTLET) A device that is intended to p
26、rovide power to an inserted plug, andthat is installed as a fixed outlet or on equipment.2.17 SWITCH RATED PLUGS AND RECEPTACLES Plugs and receptacles that may be used ineither branch circuit or motor circuit switching applications.APRIL 20, 2004SUBJECT 268282.18 TERMINAL A conductive part provided
27、on a contact for connecting a conductor.2.19 TERMINAL, CRIMP TYPE A terminal in which an electro-mechanical connection is madebetween the terminal lug and a conductor by compressing the lug onto the conductors.2.20 TERMINAL, FIELD WIRING A terminal to which power supply, load, control, or equipmentg
28、rounding connections will be made in the field when the device is installed.2.21 TERMINAL, PRESSURE-WIRE A terminal in which the conductor is clamped under a pressureplate or saddle by one or more screws or nuts.2.22 TERMINAL, SET SCREW A terminal in which the clamping pressure is applied by the end
29、 ofthe screw bearing directly on the conductor.2.23 TERMINAL, WIRE-BINDING SCREW A terminal in which the conductor is bent around thescrew and is clamped directly under the head of the screw when it is tightened.3 General3.1 Components3.1.1 Except as indicated in Clause 3.1.2, a component of a produ
30、ct covered by this outline shall complywith the requirements for that component. See Appendix A for a list of standards covering componentsgenerally used in the products covered by this outline. A component shall comply with standards asappropriate for the country where the product is to be used.3.1
31、.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.3.1.3 A component shall be used in accordance
32、with its rating established for the intended conditions ofuse.3.1.4 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, an
33、d shall be used only under those specific conditions.APRIL 20, 2004 SUBJECT 2682 93.2 Units of Measurement3.2.1 If a value for measurement is followed by a value in other units in parentheses, the second valuemay be only approximate. The first stated value is the requirement.CONSTRUCTION4 General4.1
34、 The ratings mentioned throughout this outline, including those mentioned in Clause 46.2, representthe maximum ampacity and voltage for a device. A device is considered to be for use with eitheralternating or direct current unless the rating includes a marking to restrict the use to alternating curr
35、ent.See Clause 47.5.1.5 Configurations5.1 Combinations of attachment plugs and receptacles are covered by this outline and standardizedconfigurations of these attachment plugs and receptacle combinations are located in the Standard for Pinand Sleeve Configurations, UL 1686.6 Insulating Material6.1 A
36、 base or body in or on which live parts are mounted shall be of ceramic or other insulating materialmeeting the requirements of this outline.6.2 Vulcanized fiber or rubber may be used for insulating washers, separators, and barriers, but not asthe sole support for live parts. The material shall be m
37、oisture resistant in accordance with Section 24.6.3 A polymeric material used for electrical insulation, an internal barrier necessary to maintain electricalclearances and creepage distances, or enclosure of live parts shall have a flame class rating of HB, V-2,V-1, V-0, VTM-2, VTM-1, VTM-0, 5VA or
38、5VB in accordance with the requirements of the Standard forTests for Flammability of Plastic Materials for Parts in Devices and Appliances, UL 94. The flammabilityclassification shall be judged at the actual minimum thickness employed within 0.8 mm (1/32 inch) of liveparts within the device.6.4 The
39、internal insulating systems of components for which component requirements exist need nothave a flame class rating.6.5 A small part meeting all the following criteria need not have a flame class rating:a) Its volume does not exceed 2 cm3(0.122 cubic inch);b) Its maximum dimension does not exceed 3 c
40、m (1.18 inches); andc) Its location is such that it cannot propagate flame from one area to another or act as abridge between a possible source of ignition and other ignitable parts.APRIL 20, 2004SUBJECT 2682106.6 Fiber and similar material that is equal to or less than 0.25 mm (0.010 inch) thick ne
41、ed not have aflame class rating.6.7 A polymeric material used for electrical insulation, an internal barrier necessary to maintain electricalclearances and creepage distances, or enclosure of live parts shall comply with the requirements inSection 20 27.6.8 A polymeric material having a maximum comp
42、arative tracking index (CTI) performance level class of3 or a minimum CTI value of 175 need not comply with Comparative Tracking Index, Section 20.6.9 A polymeric material having hot wire ignition (HWI) corresponding to the values shown in Table 6.1for the applicable flammability classification need
43、 not comply with Glow Wire, Section 21.6.10 A polymeric material having high-current arc resistance to ignition (HAI) corresponding to the valuesshown in Table 6.1 for the applicable flammability classification need not comply with High-Current ArcResistance to Ignition, Section 22.Table 6.1Hot wire
44、 ignition (HWI) and high-current arc resistance to ignition (HAI) ratings of insulatingmaterials(See Clause 6.9)FlammabilityclassificationbHWIc,eHAIdMaximum PLCaMinimum value Maximum PLCaMinimum valueV-0, VTM-0 4 7 3 15V-1, VTM-1, 5VA, 5VB 3 15 3 15V-2, VTM-2 3 15 3 15HB230160aFor materials with oth
45、er than VTM flammability classifications, the performance level class (PLC) for material shall beevaluated using the specimen thickness employed in the end product or nominal 3.2 mm (1/8 inch) thickness, whicheverthickness is greater.bFlammability classification- Described in Tests for Flammability
46、of Plastic Materials for Parts in Devices and Appliances, UL94. The flammability classification shall be judged at the actual minimum thickness employed within 0.8 mm (1/32 inch) of liveparts within the device.cHot Wire Resistance to Ignition Described in Polymeric Materials Short Term Property Eval
47、uations, UL 746A.dHigh-current arc resistance to ignition Described in Polymeric Materials Short Term Property Evaluations, UL 746A.eThe requirements for hot wire ignition (HWI) performance level class values do not apply to a polymeric material used as anenclosure of a portable device, that does no
48、t enclose live parts or insulated live parts where the insulation thickness is greaterthan 0.7 mm (0.028 inch).6.11 The internal insulating systems of components for which component requirements exist need notcomply with the requirements in Sections 20 22.6.12 A small part meeting all the following
49、criteria need not comply with the requirements in Sections 20 22:a) Its volume does not exceed 2 cm3(0.122 cubic inch);b) Its maximum dimension does not exceed 3 cm (1.18 inches); andc) Its location is such that it cannot propagate flame from one area to another or act as abridge between a possible source of ignition and other ignitable parts.APRIL 20, 2004 SUBJECT 2682 116.13 Fiber and similar material that is equal to or less than 0.25 mm (0.010 inch) thick need not complywith the re
