1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUNDERWRITERS LABORATORIES INC. CERTIFICATION REQUIREMENT DECISIONThis Certification Requirement Decision is prepared and published by Underwriters Laboratories Inc.(UL). It is normative for the a
2、pplicable UL Product Certification Program(s); however, it is currently notpart of the UL Standard(s) referenced below.Product Category (CCN): QIFA2, QIJQ2Standard Number: UL 6703Standard Title: Standard for Connectors for Use in Photovoltaic SystemsEdition Date: August 28, 2014Edition Number: 1Sect
3、ion / Paragraph Reference: 1.1, Table 6.2, Table 7.1, Table 7.2, Table 9.1Subject: Expansion of UL 6703 Scope to include single-pole devices up to 1500 V dcor less*This Certification Requirement Decision (CRD) supercedes prior CRD issued April28, 2015.DECISION:INTRODUCTION1 Scope1.1 This standard co
4、vers latching or locking type PV connectors either as a free connector (separateentity) or as a fixed connector (panel or bulkhead type) and rated 1000 1500 V ac or dc or less. Theseconnectors are intended for use in wiring methods detailed in Part IV of Article 690 - Solar PhotovoltaicSystems of th
5、e National Electrical Code, NFPA 70.6.2 Insulating materialTable 6.2Determination of CTI or IPTVoltageaCreepage distance IPTbrequired CTIcrequired0 - 30 Any No No 30 - 600 30-600 12.7 mm No No 600 - 1000 600 - 1000 16.0 mm No No1001 1500d1000 up to 1500a24 (15/16)aSingle-pole devices only.Table 7.2M
6、inimum acceptable spacings for tool applied crimp type field wiring terminals and Minimumacceptable spacings for locations elsewhere than at wiring terminalsThrough air Over surfacePotential involved, V mm (in) mm (in)0-50 1.6 (1/16) 1.6 (1/16)51-300 3.2 (1/8) 6.4 (1/4)301-600 6.4 (1/4) 9.5 (3/8)601
7、-1000 9.5 (3/8) 12.7 (1/2)1000 up to 1500a14 (9/16) 15 (19/32)aSingle-pole devices only.Table 9.1Required testsTest Reference (Standard, Section) Sample RequirementsWater Spray SequenceDielectric Voltage Withstand - asreceivedUL 1703, 26 3 assemblies, matedLeakage Current UL 1703, 21Water Spray UL 1
8、703, 33Dielectric Voltage Withstand followingWater SprayUL 1703, 26Leakage Current following Water Spray UL 1703, 21Temperature Cycling SequenceDielectric Voltage Withstand - asreceivedUL 1703, 26 3 assemblies, matedLeakage Current - as received UL 1703, 21Temperature Cycling UL 1703, 35Dielectric V
9、oltage Withstand followingTemperature CyclingUL 1703, 26Leakage Current following TemperatureCyclingUL 1703, 21Wet Insulation Resistance followingTemperature CyclingUL 1703, 27Humidity Cycling SequenceDielectric Voltage Withstand - asreceivedUL 1703, 26 3 assemblies, matedLeakage Current - as receiv
10、ed UL 1703, 21STANDARD NUMBER: UL 6703 -2-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULTable 9.1 ContinuedTest Reference (Standard, Section) Sample RequirementsHumidity Cycling UL 1703, 36Leakage Current following HumidityCyclingUL 1703, 21
11、Wet Insulation Resistance followingHumidity CyclingUL 1703, 27Additional tests to UL 1703Wet Insulation Resistance - as received UL 1703, 27 3 assemblies, matedImpactaUL 1703, 30 3 assemblies, matedLow Temperature ImpactaUL 1703, 30 3 assemblies, matedAdditional tests to UL 746CCrush Resistance UL 7
12、46C, 21 3 assemblies, matedMold Stress-Relief Distortion followed byStrain ReliefUL 746C, 29 and UL 1703, 22 6 assemblies, matedAdditional tests to UL 486A-486BCurrent Cyclingb,eUL 486A-486B, 9.2 4 assemblies, max wire size/amp rating,matedStatic Heating SequenceeUL 486A-486B, 9.3 4 assemblies, max
13、wire size/amp rating,matedMechanical SequenceeUL 486A-486B, 9.4 4 assemblies, min wire size not matedDielectric Voltage WithstandfUL 486A-486B, 9.5 24 assemblies, max and minTest A, 9.5.2 6 assemblies and mated as receivedTest A, 9.5.2 6 assemblies aged then assembledand matedTest A, 9.5.2 6 assembl
14、ies mated, conditioned, thentestedTest B, 9.5.3 6 assemblies matedcStress Corrosion (for current-carryingparts containing more than 15% zinc)UL 486A-486B , 9.12 3 assemblies, max wire size, not matedAdditional tests to UL 486CSpring-action clamp sequencedUL 486C, 9.12 6 of each combination of connec
15、tor andtest conductor(s) Conditioning Temperature Dielectric withstandaSee 9.1.3.bA PV connector that is dependent upon insulation piercing, insulation displacement or spring action shall be subjected to thecurrent cycling test. A PV connector that is a compression type (tool applied crimp) and is r
16、ated for copper wire only, need notbe subjected to the Current Cycling Test.cWith the concurrence of those concerned, the unconditioned specimens used for Test A, insulation puncture, may be used forTest B, flashover.dA PV connector that is dependent upon spring action shall be subjected to the spri
17、ng action sequence.eApplicable to single pole connectors. For multi-pole connectors, see Table 9.2.fTable 28 on UL 486A-486B covers voltage rating up to 600 V. Above 600 V, following requirements apply:For voltage rating of 1 000 V, the test voltage (Vac) for puncture (1 min) is 5 000, and for flash
18、over (maximum) is 11 000.For voltage rating of 1 500 V, the test voltage (Vac) for puncture (1 min) is 7 000, and for flashover (maximum) is 16 000.For other voltage ratings between 600 V and 1 500 V, following formula apply: Test voltage (Vac) for puncture (1 min) equal to 4 times voltage rating pl
19、us 1 000; Test voltage (Vac) for flashover (maximum) equal to 10 times voltage rating plus 1 000.Note 1 The sample requirements assume only one construction (male and female) and one size and type conductor unlessotherwise noted. Additional tests and samples may be required based on construction.Not
20、e21assembly consists of 1 male and 1 female connector with 0.7 m of intended conductor for each connector.STANDARD NUMBER: UL 6703 -3-UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULTable 9.1 ContinuedTest Reference (Standard, Section) Sample
21、RequirementsNote3Ifconnectors may be assembled in the field, unassembled connectors and 2 sets of all necessary tools are required.RATIONALE FOR DECISION:As a result of changes to UL 1703, the Standard for Flat-plate Photovoltaic Modules and Panels, UL hasalso expanded the scope of UL 6703. The basi
22、s for this change is explained in the rationale for the CRDUL 1703. This rationale is provided below:A need exists to be able to rate PV modules with maximum system voltages up to 1500 Vdc.The current maximum of 1000 Vdc limits the ability of industry to efficiently deliver power from PVmodules. Rai
23、sing the maximum system voltage rating limit to 1500 Vdc allows the industry to increasepower production while maintaining existing current levels, leading to more efficient use of wiring andbalance of system components such as combiner boxes, fuses, and inverters.The components used in the manufact
24、uring of PV modules and the devices used to install PV modules inthe field are suitable for system voltages of at least 1500 Vdc. This proposal expands UL 1703 to addressthe creepage and clearances needed to provide suitable isolation of live circuits at 1500 Vdc or less.Copyright 2015 Underwriters
25、Laboratories Inc.UL, in performing its functions 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 Underwriter
26、s Laboratories Inc. inpractically applying the requirements of the standard. They do not represent formal interpretations of thestandard under American National Standards Institute (ANSI) processes. UL shall not be responsible toanyone for the use of or reliance upon Certification Requirement Decisi
27、ons by anyone. UL shall not incurany obligation or liability for damages, including consequential damages, arising out of or in connectionwith the use or reliance upon Certification Requirement Decisions. The electronic version of theCertification Requirement 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 6703 -4-
