1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULAugust 2, 20111SUBJECT 9703OUTLINE OF INVESTIGATIONFORDISTRIBUTED GENERATION WIRING HARNESSESIssue Number: 1AUGUST 2, 2011Summary of TopicsThis is the first issue of the Outline of Investigation
2、for DistributedGeneration Wiring Harnesses, Subject 9703.The UL Foreword is no longer located within the UL Outline of Investigation. Forinformation concerning the use and application of the requirements contained inthis Outline of Investigation, the current version of the UL Foreword is located onU
3、LStandardsInfoNet at: http:/ 2011 UNDERWRITERS LABORATORIES INC.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULAUGUST 2, 2011SUBJECT 97032No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHO
4、UT PERMISSION FROM ULCONTENTSINTRODUCTION1 Scope .52 General 52.1 Components .52.2 Units of measurement .62.3 References 63 Glossary .6CONSTRUCTION4 Enclosure 75 Protection of Users - Accessibility of Uninsulated Live Parts 86 Electric Shock 87 Wiring Terminals 88 Wire and Cable .89 Field Wiring Com
5、partments 810 Electrical Connections 811 Live Parts .912 Spacings 913 Barriers .914 Connectors 915 Printed-Wiring Boards 916 Fuses and Fuse Holders 9PERFORMANCE17 General 1018 Temperature .1019 Dielectric Voltage-Withstand Test .1120 Leakage Current Test .1221 Mold Stress-Relief Distortion .1322 Str
6、ain Relief Test .1323 Crush Test .1424 Push Test 1425 Impact Test 1526 Terminal Torque Test .1527 Grounding Impedance Test 1628 Bonding Conductor Test .1629 Compression Test 1630 Current Overload Test .1631 Corrosive Atmosphere Test 1732 Metallic Coating Thickness Test 1733 Water Spray Test .1734 We
7、t Insulation-Resistance Test .1735 Temperature Cycling Test .1836 Humidity Cycling Test .19AUGUST 2, 2011 SUBJECT 9703 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULRATING37 Details .20MARKINGS38 Details .2039 Installation and Assembly Inst
8、ructions .21APPENDIX AStandards for ComponentsA1AUGUST 2, 2011SUBJECT 97034UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULINTRODUCTION1 Scope1.1 These requirements cover wiring harnesses intended to interconnect distributed generation systemd
9、evices.1.2 These requirements cover distributed generation wiring harnesses intended for factory and fieldwiring and may include assemblies of cables intended for interconnection of PV modules, solar collectors,and other distributed generation sources, interconnection of inverters, converters, contr
10、ollers, andchargers as well as distributed generation system communication harnesses and system outputharnesses.1.3 The products covered by these requirements are intended to be installed in accordance with theNational Electrical Code, ANSI/NFPA 70.2 General2.1 Components2.1.1 Except as indicated in
11、 2.1.2, a component of a product covered by this Outline of Investigation shallcomply with the requirements for that component. See Appendix A for a list of standards coveringcomponents generally used in the products covered by this Outline of Investigation.2.1.2 A component need not comply with a s
12、pecific requirement that:a) Involves a feature or characteristic not needed in the application of the component in theproduct covered by this Outline of Investigation, orb) Is superseded by a requirement in this Outline of Investigation.2.1.3 A component shall be used in accordance with its recogniz
13、ed rating established for the intendedconditions of use.2.1.4 Specific components are recognized as being incomplete in construction features or restricted inperformance capabilities. Such components are intended for use only under limited conditions, such ascertain temperatures not exceeding specif
14、ied limits, and shall be used only under those specific conditionsfor which they have been recognized.AUGUST 2, 2011 SUBJECT 9703 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL2.2 Units of measurement2.2.1 Values stated without parentheses
15、are the requirement. Values in parentheses are explanatory orapproximate information.2.3 References2.3.1 Any undated reference to a code or standard appearing in the requirements of this Outline ofInvestigation shall be interpreted as referring to the latest edition of that code or standard.3 Glossa
16、ry3.1 In the text of this outline, the term unit refers to any product covered by this outline. For the purposeof this outline, the definitions in 3.2 3.17 apply.3.2 AC MODULE The smallest complete unit that includes solar cells, optics, inverters, and othercomponents, excluding tracking devices, in
17、tended to generate ac power from sunlight.3.3 BARRIER A part inside an enclosure that reduces access to a part that involves a risk of fire,electric shock, injury to persons, or electrical energy-high current levels.3.4 ENCLOSURE A surrounding case constructed to provide a degree of protection again
18、st:a) The accessibility of a part that potentially involves a risk of fire, electric shock or injury topersons, orb) The risk of propagation of flame, sparks, and molten metal initiated by an electricaldisturbance occurring within.3.5 FIELD-WIRING LEAD A lead to which a supply, load, or other wire i
19、s intended to be connectedby an installer.3.6 FIELD-WIRING TERMINAL A terminal to which a supply, load, or other wire is intended to beconnected by an installer.3.7 FIXED UNIT A unit that is intended to be permanently connected mechanically and electricallyand only able to be detached by the use of
20、a tool.3.8 GROUNDED CONDUCTOR A system or circuit conductor that is intentionally grounded.3.9 KNOCKOUT A portion of the wall of an enclosure so fashioned that it is capable of being readilyremoved by a hammer, screwdriver, and pliers at the time of installation in order to provide an openingor hole
21、 for the attachment of an auxiliary device, raceway, cable, or fitting.3.10 LIVE PART An electrically conductive part within a unit that during intended use has a potentialdifference with respect to earth ground.3.11 MAXIMUM SYSTEM VOLTAGE The open-circuit voltage (Voc) of the photovoltaic module or
22、panel multiplied by the temperature correction factor specified in Article 690.7 of the National ElectricalCode, ANSI/NFPA 70 for crystalline and multi-crystalline silicon photovoltaic modules and panels. Themaximum system voltage is equal to the Voc for amorphous silicate and thin film photovoltaic
23、 modulesand panels.AUGUST 2, 2011SUBJECT 97036UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL3.12 OPEN-CIRCUIT VOLTAGE (Voc) The maximum no load output voltage of a photovoltaicmodule or panel at standard test conditions (STC).3.13 PERMANENTL
24、Y CONNECTED UNIT A unit connected to the electrical supply by means otherthan a supply cord and an attachment plug.3.14 PRESSURE TERMINAL CONNECTOR A terminal that accomplishes the connection of one ormore conductors by means of pressure without the use of solder. Examples of pressure terminalconnec
25、tors are:a) Barrel and setscrew type,b) Crimp-type barrel, orc) Clamping plate and screw type.3.15 SERVICE PERSONNEL Trained persons having familiarity with the construction and operationof the equipment and the risks involved.3.16 STANDARD TEST CONDITIONS (STC) Test conditions consisting of:a) 100
26、mW/cm2irradiance,b) AM 1.5 spectrum, andc) 25C (77F) cell temperature.3.17 TOOL A screwdriver, coin, key, or any other object that is usable to operate a screw, latch, orsimilar fastening means.CONSTRUCTION4 Enclosure4.1 An enclosure as defined in 3.4 and any part of an enclosure shall comply with S
27、ection 4, Enclosure,and Section 5, Protection Against Corrosion, in the Outline of Investigation for Photovoltaic JunctionBoxes, Subject 3730, except as noted in 4.2.4.2 Polymeric materials making up the surface or part of the surface of an enclosure, such as anovermolded wire interconnection enclos
28、ure and similar devices, that are in-line with the wire or cable andhaving a total surface area of less than 200 cm2shall have a minimum flame rating of 94-V0.AUGUST 2, 2011 SUBJECT 9703 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL5 Prote
29、ction of Users - Accessibility of Uninsulated Live Parts5.1 Distributed generation wiring harnesses shall comply with Section 15, Accessibility of UninsulatedLive Parts, in the Standard for Flat-Plate Photovoltaic Modules and Panels, UL 1703.6 Electric Shock6.1 A live part does not involve a risk of
30、 electric shock when the maximum voltage of the part to grounddoes not exceed 30 Vdc.7 Wiring Terminals7.1 Wiring terminals shall comply with Section 8, Wiring Terminals, in the Outline of Investigation forPhotovoltaic Junction Boxes, Subject 3730.8 Wire and Cable8.1 Wire shall be PV, USE-2, Tray Ca
31、ble, or other wire style suitable for the intended use.8.2 A field-wiring lead shall not be less than 152.4 mm (6 in) long.Exception: Leads exiting the enclosure terminating with a PV Connector may be less than 152.4 mm (6in) long.8.3 All wiring leads exiting the enclosure shall comply with Strain R
32、elief Test, Section 22, both inas-received condition and following the Mold Stress-Relief Distortion, Section 21.9 Field Wiring Compartments9.1 Field wiring compartments shall comply with Section 10, Field Wiring Compartments, in the Outline ofInvestigation for Photovoltaic Junction Boxes, Subject 3
33、730.10 Electrical Connections10.1 Electrical connections shall comply with Section 10, Field Wiring Compartments, in the Outline ofInvestigation for Photovoltaic Junction Boxes, Subject 3730.AUGUST 2, 2011SUBJECT 97038UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WIT
34、HOUT PERMISSION FROM UL11 Live Parts11.1 A current-carrying part shall be of silver, copper, copper alloy, aluminum, or the equivalent.11.2 Uninsulated live parts and components that have uninsulated live parts shall be secured so they donot turn or shift in position where such displacement results
35、in a reduction of spacings below the minimumvalues specified in Section 12, Spacings, in the Standard for Flat-Plate Photovoltaic Modules and Panels,UL 1703.12 Spacings12.1 Spacings for distributed generation wiring harnesses shall comply with Section 12, Spacings, in theStandard for Flat-Plate Phot
36、ovoltaic Modules and Panels, UL 1703.13 Barriers13.1 Barriers shall comply with Section 18, Barriers, in the Outline of Investigation for PhotovoltaicJunction Boxes, Subject 3730.14 Connectors14.1 Connectors box shall comply with the Outline of Investigation for Connectors for Use in PhotovoltaicSys
37、tems, Subject 6703, or with the Outline of Investigation for Multi-Pole Connectors for Use inPhotovoltaic Systems, Subject 6703A.15 Printed-Wiring Boards15.1 Printed-wiring boards shall Section 20, Printed-Wiring Boards, in the Outline of Investigation forPhotovoltaic Junction Boxes, Subject 3730.16
38、 Fuses and Fuse Holders16.1 Fuses used as a part of DC wiring harnesses shall comply with the Outline of Investigation forLow-Voltage Fuses - Fuses for Photovoltaic Systems, Subject 2579.16.2 Fuseholders used as a part of DC wiring harnesses shall comply with the Standard for Fuseholders- Part 1: Ge
39、neral Requirements, UL 4248-1, in addition to the Outline of Investigation for Fuseholders -Part 18: Photovoltaic, Subject 4248-18.16.3 Fuses used as a part of AC wiring harnesses that are intended to provide branch circuit protectionshall be Listed for their use.16.4 Fuses used as a part of AC wiri
40、ng harnesses that are intended to provide supplementary protectionshall be suitable for that purpose.16.5 Fuseholders used as a part of AC wiring harnesses shall be Listed for their use.AUGUST 2, 2011 SUBJECT 9703 9UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOU
41、T PERMISSION FROM ULPERFORMANCE17 General17.1 Distributed generation wiring harnesses shall be subjected to the tests described in Sections 18 36.18 Temperature18.1 When the distributed generation wiring harness is at equilibrium while conducting rated currentthrough each supply and load connection
42、point (which may require multiple test configurations); no partshall attain a temperature that would:a) Ignite materials or components;b) Cause the temperature limits of surfaces, materials, or components as described in Table18.1, to be exceeded;c) Cause the Relative Thermal Index 20 degrees C of p
43、olymeric materials to be exceeded; ord) Cause creeping, distortion, sagging, charring or similar damage to any part of the product, ifsuch damage or deterioration may impair the performance of the product under therequirements of this Outline.18.2 The temperature of a surface that is subject to cont
44、act shall not be more than specified in Table18.1.Exception: The temperature maximums specified for casual contact in Table 18.1 items 6 and 7 do notapply when:a) The unit is a fixed unit that is typically not subject to contact by persons; andb) The unit is marked as required by 38.4.Table 18.1Maxi
45、mum surface temperaturesTemperaturePart, material, or component C (F)1 Metal surfaces subject to casual contact 70 1582 Nonmetallic surfaces subject to casualcontact (other than wood)95 or rated temperature, whichever isless203 or rated temperature, whichever isless3 Wood and wood product surfacessu
46、bject to casual contact90 1944 Metal adjacent structural members 70 1585 Nonmetallic adjacent structural members(other than wood)95 or rated temperature, whichever isless203 or rated temperature, whichever isless6 Field wiring terminalsa60 1407 Field wiring compartments that wiresmay contacta60 1408
47、 Insulated conductors Rated temperature Rated temperatureaIf a marking is provided in accordance with 38.4, the temperatures observed on the terminals and at points within a wiringcompartment may exceed the value specified but shall not attain a temperature higher than 90C (194F).AUGUST 2, 2011SUBJE
48、CT 970310UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL18.3 With reference to 18.1, thermal equilibrium is attained when four successive readings indicate nochange in temperature. No change in temperature is determined when the maximum diffe
49、rence betweenany two readings is at most 1C. These readings shall be taken at the start and conclusion of threeconsecutive, equal intervals of time; each interval having a duration of 10 minutes minimum test time.18.4 Material and component temperatures are to be determined for an ambient temperature of 40C(104F). The ambient temperature may be in the range of 10 to 55C (50 to 131F), in which case eachobserved temperature shall be corrected by the addition (if the ambient temperatu
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