ANSI UL 6703-2014 UL Standard for Safety Connectors for Use in Photovoltaic Systems (First Edition Reprint with revisions through and including December 22 2017).pdf

1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 6703 Connectors for Use in Photovoltaic Systems STANDARD FOR SAFETYUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MA

2、TERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Connectors for Use in Photovoltaic Systems, UL 6703 First Edition, Dated August 28, 2014 Summary of Topics This revision of ANSI/UL 6703 includes the expansion of the scope to include

3、 single-pole devices up to 1500 V dc or less. The revised requirements are substantially in accordance with Proposal(s) on this subject dated January 27, 2017. Text that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. All r

4、ights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form by any means, electronic, mechanical photocopying, recording, or otherwise without prior permission of UL. UL provides this Standard as is without warranty of any kind, either expr

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8、andard on the purchasers computer system. MARCH 2, 2017 UL 6703 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MARCH 2, 2017 UL 6703 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION

9、WITHOUT PERMISSION FROM UL August 28, 2014 (Title Page Reprinted: March 2, 2017) 1 UL 6703 Standard for Connectors for Use in Photovoltaic Systems Prior to the rst edition, the requirements for the products covered by this standard were included in the Outline of Investigation for Connectors for Use

10、 in Photovoltaic Systems, UL 6703 and the Outline of Investigation for Multi-Pole Connectors for Use in Photovoltaic Systems, UL 6703A. First Edition August 28, 2014 This ANSI/UL Standard for Safety consists of the First Edition including revisions through March 2, 2017. The most recent designation

11、of ANSI/UL 6703 as an American National Standard (ANSI) occurred on March 2, 2017. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, and Title Page. Comments or proposals for revisions on any part of the Standard may be submitted to UL at any time. Proposals should be

12、submitted via a Proposal Request in ULs On-Line Collaborative Standards Development System (CSDS) at https:/. ULs Standards for Safety are copyrighted by UL. Neither a printed nor electronic copy of a Standard should be altered in any way. All of ULs Standards and all copyrights, ownerships, and rig

13、hts regarding those Standards shall remain the sole and exclusive property of UL. COPYRIGHT 2017 UNDERWRITERS LABORATORIES INC. ANSI/UL 6703-2017UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL AUGUST 28, 2014 CONNECTORS FOR USE IN PHOTOVOLTA

14、IC SYSTEMS - UL 6703 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .4 2 General 4 2.1 Components 4 2.2 Units of measurement .5 2.3 Undated references .5 3 Glossary .5 CONSTRUCTION 4 Gener

15、al 6 5 Current Carrying Parts (Contacts) .7 6 Polymeric Materials .7 6.1 General 7 6.2 Insulating material 8 6.3 Gaskets, Seals and O rings 9 7 Spacings .9 8 Accessibility of Uninsulated Live Parts .10 PERFORMANCE 9 PV Connector Tests 11 9.1 General .11 9.2 Effectiveness of Locking and Strain Relief

16、 tests .15 9.3 Gasket tests 16 RATINGS 10 Details .17 MARKINGS INSTRUCTIONS 12 Assembly Instructions .18 12.1 Dissemination .18 12.2 Required content .19 12.3 Assembly procedure 20 12.4 Verication 20 APPENDIX A Standards for Components .A1 AUGUST 28, 2014 CONNECTORS FOR USE IN PHOTOVOLTAIC SYSTEMS -

17、 UL 6703 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 This standard covers latching or locking type PV connectors either as a free connector (separate entity) or as a xed connector (panel or bulkhead type) and ra

18、ted 1500 V ac or dc or less. These connectors are intended for use in wiring methods detailed in Part IV of Article 690 Solar Photovoltaic Systems of the National Electrical Code, NFPA 70. 1.2 This standard is intended for single polarity PV connectors suitable for use on insulated, stranded copper

19、type USE-2 or Photovoltaic Wire (PV Wire) rated 90C, 105C, 125C, or 150C dry; 90C wet; 600, 1000, or 2000 V. 1.3 This standard also covers latching or locking type multi-pole PV connectors rated 1000 Vac or dc or less. Multi-pole PV connectors consist of connectors, panel mounted connectors, distrib

20、ution blocks and splitter connectors for the purpose of facilitating connections to and from inverters and like devices in a PV system. 1.4 This standard is also intended for multi-pole PV connectors suitable for use on insulated, stranded copper type TC-ER, USE-2 or Photovoltaic Wire (PV Wire) rate

21、d 90C, 105C, 125C, or 150C dry; 90C wet; 600, 1000, or 2000 V. 1.5 This standard covers PV connectors whose dimensions are not dened in any national or international technical standard. Connectors are identied and tested with compatible mating part (or parts if multiple exist) and are to be of the s

22、ame brand, unless multiple product manufacturers are submitting under the same evaluation for the purpose of proving intermatability. 1.6 This standard does not apply to PV wiring harnesses or cable assemblies consisting of connectors (single pole or multi-pole) assembled on to cables, which are cov

23、ered by the Outline of Investigation for Distributed Generation Wiring Harnesses, UL 9703. PV Wiring Harnesses may use PV connectors covered by this standard in their assembly. Harnesses have PV connectors factory assembled onto each end of the cable. 2 General 2.1 Components 2.1.1 Except as indicat

24、ed in 2.1.2, a component of a product covered by this standard shall comply with the requirements for that component. See Appendix A for a list of standards covering components generally used in the products covered by this standard. 2.1.2 A component is not required to comply with a specic requirem

25、ent that: a) Involves a feature or characteristic not needed in the application of the component in the product covered by this standard, or b) Is superseded by a requirement in this standard. MARCH 2, 2017 CONNECTORS FOR USE IN PHOTOVOLTAIC SYSTEMS - UL 6703 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED

26、FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 2.1.3 A component shall be used in accordance with its recognized rating established for the intended conditions of use. 2.1.4 Specic components are recognized as being incomplete in construction features or restricted in performanc

27、e capabilities. Such components are intended for use only under limited conditions, such as certain temperatures not exceeding specied limits, and shall be used only under those specic conditions for which they have been recognized. 2.2 Units of measurement 2.2.1 The requirements in this standard ar

28、e stated in metric units that make the requirement conveniently useable in countries employing the various metric systems (practical SI and customary). In addition to being stated in metric units, the inch/pound units, that are customary in the USA, are also provided. The values given in SI (metric)

29、 units shall be normative, except for AWG conductor sizes. Any other values given are for information purposes only. 2.2.2 Equivalent although, not necessarily exactly identical results are to be expected from applying a requirement in USA or metric terms. Equipment calibrated in metric units is to

30、be used when a requirement is applied in metric terms. 2.3 Undated references 2.3.1 Any undated reference to a code or standard appearing in the requirements of this standard shall be interpreted as referring to the latest edition of that code or standard. 3 Glossary 3.1 For the purpose of this stan

31、dard, the following terms and denitions apply. In addition, see the Glossary section of the Standard for Cable Assemblies and Fittings for Industrial Control and Signal Distribution, UL 2238, for multi-polarity devices. 3.2 ACCESSIBLE PART a part so located that it can be contacted by a person, eith

32、er directly or by means of a probe or a tool, or that is not recessed the required distance behind an opening. 3.3 AMBIENT TEMPERATURE maximum temperature of the ambient as assigned by the manufacturer, in which the connector is able to operate permanently without the maximum operating temperature b

33、eing exceeded. 3.4 DISTRIBUTION BLOCK an insulated tting with or without mounting options that terminates in two or more outlets or that terminates in two or more female cable ttings for the purpose of distributing power to additional outlets/inlets. 3.5 ENCLOSURE that part of the connector that: a)

34、 renders inaccessible all or any parts of the connector that may otherwise present a risk of electric shock, and/or b) retards propagation of ame initiated by electrical disturbances occurring within. 3.6 MAXIMUM OPERATING TEMPERATURE (MOT) UPPER LIMITING TEMPERATURE maximum temperature of a connect

35、or as dened by the manufacturer in which the connector is intended to operate. AUGUST 28, 2014 CONNECTORS FOR USE IN PHOTOVOLTAIC SYSTEMS - UL 6703 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 3.7 OVERMOLD additional material applied ove

36、r the enclosure and cable to provide additional environmental protection and sealing. CONSTRUCTION 4 General 4.1 Only materials that are acceptable for the particular use shall be employed in a PV connector. PV connectors shall be made and nished with the degree of uniformity and grade of workmanshi

37、p that are practicable in a well-equipped factory. 4.2 A PV connector shall comply with the requirements in the Standard for Wire Connectors, UL 486A-486B, as appropriate, and with this standard. 4.3 Multi-pole PV connectors shall additionally comply with the following construction requirements, as

38、appropriate, in the Standard for Cable Assemblies and Fittings for Industrial Control and Signal Distribution, UL 2238: a) Grounding and Dead-Metal Parts (Section 9); b) Terminals (Section 10); c) Strain Relief and Cord Entries (Section 11); and d) Assembly (Section 13). 4.4 There shall be no sharp

39、edges or corners on the outer surface of a PV connector that can result in damage to the PV wire insulation that the connector contacts. 4.5 Latching connectors shall not require the use of a tool to unlatch. Latching connectors shall incorporate a suitable latching mechanism such as ribs, twisting

40、action, or other latching mechanisms between the mated pair. 4.6 Locking connectors shall require the use of a tool to unlock the connectors in a mated position. A tool can be a specialized device provided by the manufacturer or a standard common device, i.e. screwdriver. The tool and its operation

41、shall be identied in the manufacturers assembly instructions, see 12.2.1(d)(8). AUGUST 28, 2014 CONNECTORS FOR USE IN PHOTOVOLTAIC SYSTEMS - UL 6703 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 5 Current Carrying Parts (Contacts) 5.1 The

42、 current-carrying part of a connector shall be copper or copper alloy. Current-carrying parts containing more than 15% zinc shall comply with 7.12.3 of the Standard for Wire Connectors, UL 486A-486B. 6 Polymeric Materials 6.1 General 6.1.1 Polymeric materials may be used as an enclosure or as insula

43、ting materials that are in direct contact with or in close proximity, less than 0.8 mm (1/32 in), to live parts. When the same material is used for both purposes, the more stringent requirements shall be applied. 6.1.2 Polymeric materials employed as a part of the connector shall be suitable for its

44、 rated temperature. The relative thermal index (RTI), electrical, mechanical impact (IMP) and mechanical strength (STR), as determined in accordance with the Standard for Polymeric Materials Long Term Property Evaluations, UL 746B, shall not be less than 20C (36F) above the maximum operating tempera

45、ture rating for the connector as specied by the manufacturer. For soft materials, such as elastomers, where the RTI Mechanical IMP cannot be determined, or for those connectors protected from impact under use, the RTI mechanical IMP is not required. 6.1.3 A polymeric material serving as the enclosur

46、e of a part involving a risk of re or electric shock shall comply with the applicable requirements in the Standard for Polymeric Materials Use in Electrical Equipment Evaluations, UL 746C, concerning: a) Ultraviolet light exposure, and Note: An f1 rating signies compliance, an f2 rating requires fur

47、ther investigation into its suitability. b) Water exposure and immersion. 6.1.4 A polymeric material serving as the enclosure shall have a minimum ammability classication of V-0 or 5VA as determined by tests described in the Standard for Tests for Flammability of Plastic Materials for Parts in Devic

48、es and Appliances, UL 94. The material thickness for determining the ammability shall be measured at the thinnest points of the enclosure. 6.1.5 With reference to 6.1.4, a material other than V-0 or 5VA may be used when the enclosure of the PV wire connector complies with the requirements for the eq

49、uivalent ame test as specied in the Standard for Polymeric Materials Use in Electrical Equipment Evaluations, UL 746C. 6.1.6 A polymeric material serving as the enclosure of a part involving a risk of re or electric shock shall have a relative thermal index (RTI), electrical, mechanical IMP and mechanical STR, as determined in accordance with the Standard for Polymeric Materials Long Term Property Evaluations, UL 746B, not less than 90C (194F). AUGUST 28, 2014 CONNECTORS FOR