1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUNDERWRITERS LABORATORIES INC. CERTIFICATION REQUIREMENT DECISIONThis Certification Requirement Decision is prepared by UL LLC. It is normative for the applicable ULProduct Certification Program(
2、s); however, it is currently not part of the UL Standard(s) referencedbelow.Product Category (CCN): RTRTStandard Number: UL 498Standard Title: Standard for Attachment Plugs and ReceptaclesEdition Date: April 28, 2017Edition Number: 16Section / Paragraph Reference: 2.39.1; 12.6.1-12.6.3; 20.3, 20.3.1
3、 30.7, 30.7.1; 87.1;Section 91.4; 113.8; Section 128.4; Revised Marking Tables 193.2 and 193.4Subject: Spring Action Terminal ClampDECISION:Construction:2 Glossary2.39.1 TERMINAL, SPRING ACTION CLAMP - A terminal where the stripped end of a conductor isinserted into the terminal and an integral lev
4、er applies clamping pressure to a spring mechanism, withoutthe use of screws.12 Terminals12.6 Spring action clamp terminals12.6.1 In addition to the requirements contained in this standard, a receptacle or inlet employing a springaction clamp terminal shall also comply with the applicable requiremen
5、ts, as specified in the Standard forEquipment Wiring Terminals for Use with Aluminum and/or Copper Conductors, UL 486E. All tests shallbe investigated with minimum and maximum conductor AWG size and for each type of conductor (solidand stranded), for each device construction.12.6.2 A receptacle or i
6、nlet employing spring action clamp terminals are intended for either stranded orsolid or both, copper wire only.12.6.3 A receptacle or inlet employing spring action clamp terminals are intended for the connection of asingle conductor only.INLETS20.3 Inlet with Spring Action Clamp Terminal20.3.1 An i
7、nlet that is provided with spring action clamp terminal shall be provided with a positive meansto prevent unintentional separation of the conductor from the terminal and shall comply with the SpringAction Clamp Terminal Pull Test described in Section 91.4.30.7 Receptacle with Spring Action Clamp Ter
8、minalUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL30.7.1 A receptacle that is provided with spring action clamp terminal shall be provided with a positivemeans to prevent unintentional separation of the conductor from the terminal and shall
9、 comply with theSpring Action Clamp Terminal Pull Test described in Section 128.4.87 Terminal Temperature Test87.1 The temperature rise of an inlet intended for mounting in or on an outlet box and employingwire-binding screw, or clamp terminals, or spring action clamp terminals for field connection
10、tobranch-circuit conductors, when measured at the points described in 87.2, shall not be more than 30C(54F) when the device is carrying its maximum rated current.91.4 Spring Action Clamp Terminal Pull Test91.4.1 An inlet employing spring action clamp terminals shall be subjected to the test conditio
11、ns asspecified in 91.4.2 91.4.6.91.4.2 Upon completion of this test, there shall not be any damage to the terminal or its securementmechanism. The spring action clamp shall remain capable of functioning as intended. There shall not beany damage, arcing or dielectric breakdown during application of t
12、he test potential. The conductor shallnot pull free from the terminal during application of the test force.91.4.3 Each terminal of each device (three terminals minimum) shall be tested. Each terminal shall bewired with the smallest AWG conductor size and wired with the largest conductor size, as spe
13、cified by themanufacturer. If the spring action clamp is also intended for both solid and stranded AWG conductors,both solid and stranded shall be tested.91.4.4 The conductor insulation shall be prepared by removing the insulation from the conductoraccording to manufacturers strip gauge and then ins
14、erted into the spring action clamp terminal asintended. The lever of the spring action clamp shall then be operated to the fully latched and lockedposition and back to the unlatched and unlocked position. This sequence of operation shall be repeatedfor a total of 100 cycles.91.4.5 Following the 100
15、cycles, the conductor shall be reattached to the spring action clamp terminal andthe lever place in the latched and locked position as intended. A static pull force as specified in Table91.4.5 shall be applied to the conductor for 1minute in a direction perpendicular to the plane of the inletbody, t
16、ending to remove the conductor.STANDARD NUMBER: UL 498 -2-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULTable 91.4.5Test values for spring action clamp terminal pull testSize of conductor Pullout forceAWG lbf (pounds)16 914 11.512 13.510 18.
17、08 20.56 214 3091.4.6 Each device is then to be subjected to a 50 - 60 Hz essentially sinusoidal potential equal to twicethe rated voltage plus 1000 V applied between live parts of opposite polarity and between live parts andgrounding or dead metal parts. The test voltage is to be increased at a uni
18、form rate and as rapidly as isconsistent with its value being correctly indicated by a voltmeter, and maintained at the test potential for1 minute.RECEPTACLESTemperature Test113.8 When testing receptacles with wire binding screws, or screw actuated clamp type or spring actionclamp terminations, the
19、terminal temperature is to be measured on the terminations in a manner such thatthe thermocouple does not interfere with the termination.128.4 Spring Action Clamp Terminal Pull Test128.4.1 A receptacle employing spring action clamp terminals shall be subjected to the test conditions asspecified in 1
20、28.4.2 128.4.6.128.4.2 Upon completion of this test, there shall not be any damage to the terminal or its securementmechanism. The spring action clamp shall remain capable of functioning as intended. There shall not beany damage, arcing or dielectric breakdown during application of the test potentia
21、l. The conductor shallnot pull free from the terminal during application of the test force.128.4.3 Each terminal of each device (three terminals minimum) shall be tested. Each terminal shall bewired with the smallest AWG conductor size and wired with the largest conductor size, as specified by thema
22、nufacturer. If the spring action clamp is also intended for both solid and stranded AWG conductors,both solid and stranded shall be tested.128.4.4 The conductor insulation shall be prepared by removing the insulation from the conductoraccording to manufacturers strip gauge and then inserted into the
23、 spring action clamp terminal asintended. The lever of the spring action clamp shall then be operated to the fully latched and lockedposition and back to the unlatched and unlocked position. This sequence of operation shall be repeatedfor a total of 100 cycles.128.4.5 Following the 100 cycles, the c
24、onductor shall be reattached to the spring action clamp terminaland the lever place in the latched position as intended. A static pull force as specified in Table 128.4.5shall be applied to the conductor for 1minute in a direction perpendicular to the plane of the receptaclebody, tending to remove t
25、he conductor.STANDARD NUMBER: UL 498 -3-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULTable 128.4.5Test values for spring action clamp terminal pull testSize of conductor Pullout forceAWG lbf (pounds)16 914 11.512 13.510 18.08 20.56 214 3012
26、8.4.6 Each device is then to be subjected to a 50 - 60 Hz essentially sinusoidal potential equal to twicethe rated voltage plus 1000 V applied between live parts of opposite polarity and between live parts andgrounding or dead metal parts. The test voltage is to be increased at a uniform rate and as
27、 rapidly as isconsistent with its value being correctly indicated by a voltmeter, and maintained at the test potential for1 minute.MARKINGSTable 193.2Markings and instructions applicable to inlets (motor attachment plugs)Description Reference Marking LocationInlets employing spring-action clamp term
28、inals12 Installation instructions for assembly ofconductors to the terminals. Instructions shallinclude a pictorial description of the placementof the stripped conductor within the channels/guides of the enclosure.On the smallest unitcontainer,oronastuffersheet provided with eachdeviceTable 193.4Mar
29、king and instructions applicable to receptaclesDescription Reference Marking LocationInlets employing spring-action clamp terminals.40 Installation instructions for assembly ofconductors to the terminals. Instructions shallinclude a pictorial description of the placementof the stripped conductor wit
30、hin the channels/guides of the enclosure.On the smallest unitcontainer,oronastuffersheet provided with eachdeviceRATIONALE FOR DECISION:This CRD provides a method of evaluating either an inlet or receptacle employing a spring action terminal.A spring action terminal is a construction where the strip
31、ped end of a conductor is inserted into theterminal and an integral lever applies clamping pressure by a spring mechanism. This type of terminaldesign is used in other wire connector products such as a wire connector or splicing wire connector.Copyright 2018 UL LLCUL LLC, in performing its functions
32、 in accordance with its objectives, does not guarantee or warrant thecorrectness of Certification Requirement Decisions it may issue or that they will be recognized or adoptedby anyone. Certification Requirement Decisions are the opinion of UL LLC. in practically applying theSTANDARD NUMBER: UL 498
33、4-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULrequirements of the standard. They do not represent formal interpretations of the standard underAmerican National Standards Institute (ANSI) processes. UL LLC shall not be responsible to anyon
34、e forthe use of or reliance upon Certification Requirement Decisions by anyone. UL LLC shall not incur anyobligation or liability for damages, including consequential damages, arising out of or in connection withthe use or reliance upon Certification Requirement Decisions. The electronic version of
35、the CertificationRequirement Decision is the current version and previously printed copies may be outdated.This document is published as a service to ULs certification customersSTANDARD NUMBER: UL 498 -5-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULSTANDARD NUMBER: UL 498 -6-No Text on This Page
