1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULSeptember 14, 20101SUBJECT 2733OUTLINE OF INVESTIGATIONFORSURFACE VEHICLE ON-BOARD CABLEIssue Number: 2September 14, 2010Summary of TopicsThis second issue of the Outline of Investigation for Sur
2、faceVehicle On-Board Cable includes the following:Required cold rating of 30C (rather than 25C) with the optionof 40C;Change in description of the ethanol blend to align withrequirements for Equipment Compatibility with Fuels and Biofuels;Limitation on materials allowed to have an ethanol exposure r
3、atingbased on requirements for Equipment Compatibility with Fuelsand Biofuels;Clarification of the compliance criteria for the weatherometer test;andCorrection of the compliance criteria in the abrasion test.COPYRIGHT 2010 UNDERWRITERS LABORATORIES INC.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURT
4、HER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULSEPTEMBER 14, 2010SUBJECT 27332No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONTENTSINTRODUCTION1 Scope .42 Units of Measurement .43 Components 44 Undated Referen
5、ces 5CONSTRUCTION5 Materials and Workmanship 56 General 56.1 Assembly 56.2 Conductors 56.3 Insulation 66.4 Shield .66.5 Jacket .7PERFORMANCE7 General 78 Manufacturing and Production Test 15MARKINGS9 General .1510 Tag, Reel, or Carton Markings .16SEPTEMBER 14, 2010 SUBJECT 2733 3UL COPYRIGHTED MATERI
6、AL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULINTRODUCTION1 Scope1.1 This outline covers the requirements for single conductor cables for use in on-board surface vehicles.The cable is rated:a) 60, 75, 90, or 105C;b) minus 30C;c) oil resistant;d) water resistant;
7、 ande) either 300 or 600 V, ac or dc.2 Units of Measurement2.1 In addition to being stated in the inch/pound units that are customary in the USA, each of therequirements in this outline is also stated in units that make the requirement conveniently usable incountries employing the metric system (pra
8、ctical SI). Equivalent although not necessarily exactlyidentical results are to be expected from applying a requirement in USA or metric terms. Equipmentcalibrated in metric units is to be used when a requirement is applied in metric terms.3 Components3.1 Except as indicated in 3.2, a component (inc
9、luding gaskets and polymeric materials) of a productcovered by this outline of investigation shall comply with the requirements for that component.3.2 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
10、 component in theproduct covered by this outline of investigation, orb) Is superseded by a requirement in this outline of investigation.3.3 A component shall be used in accordance with its rating established for the intended conditions ofuse.3.4 Specific components are incomplete in construction fea
11、tures or restricted in performance capabilities.Such components are intended for use only under limited conditions, such as certain temperatures notexceeding specified limits, and shall be used only under those specific conditions.SEPTEMBER 14, 2010SUBJECT 27334UL COPYRIGHTED MATERIAL NOT AUTHORIZED
12、 FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL4 Undated References4.1 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.CONSTRUCTION5 Material
13、s and Workmanship5.1 Only materials that are acceptable for the particular use shall be employed in a cable. Cables shallbe made and finished with the degree of uniformity and grade of workmanship that are practicable in awell-equipped factory.5.2 Each material used in a cable shall be compatible wi
14、th all of the other materials used in the cable.6 General6.1 Assembly6.1.1 These cables consist of a single insulated conductor or a single, coaxial cable.6.1.2 Each coaxial cable shall consist of a single central conductor covered in turn with solid or foamedinsulation (with or without a skin) comp
15、lying (including thicknesses) with Insulation, 6.3; a shield complyingwith Shield, 6.4; and a jacket complying with Jacket, 6.5.6.2 Conductors6.2.1 Conductors shall be solid or stranded. Conductors 18 4/0 AWG in size shall comply with the 0.98X Nominal minimum area column as shown in Table 20.1 of t
16、he Reference Standard for Electrical Wires,Cables, and Flexible Cords, UL 1581. Conductors 0.75 95 mm2in size shall comply shall comply withthe requirements in Table 6.1. Conductors shall consist of copper in accordance with the StandardSpecification for Soft or Annealed Copper Wire, ASTM B3, the St
17、andard Specification for Tinned Soft orAnnealed Copper Wire for Electrical Purposes, ASTM B33, the Standard Specification for Silver-CoatedSoft or Annealed Copper Wire, ASTM B298, or the Standard Specification for Nickel-Coated Soft orAnnealed Copper Wire, ASTM B355. The conductor stranding is not d
18、efined, but shall be judged basedon compliance of the cable with the test program in Section 7.SEPTEMBER 14, 2010 SUBJECT 2733 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULTable 6.1Metric conductor sizesSize of conductor, mm2Minimum cross-
19、sectional area, mm20.75 0.7351 0.981.5 1.472 1.962.5 2.454 3.926 5.8810 9.816 15.725 24.535 34.350 49.070 68.695 93.16.3 Insulation6.3.1 The insulation material shall be one described in the Tables in Section 50 of the ReferenceStandard for Electrical Wires, Cables, and Flexible Cords, UL 1581, suit
20、able for the temperature rating ofthe cable. Regardless of what is noted in the Table, the minimum unaged tensile strength value shall be8.27 MPa (1200 psi).6.3.2 The insulation shall be solid in form and shall be extruded directly over the conductor.6.3.3 The insulation used in a coaxial cable may
21、be foamed. Foamed insulation does not need to complywith the minimum tensile strength noted in 6.3.1.6.3.4 The insulation thickness shall not be less than the thicknesses shown in Table 6.2 and shall bejudged based on compliance of the cable with the test program in Section 7.Table 6.2Insulation and
22、 jacket wall thicknessAWG size Metric size, mm2Minimum average wallthickness, milsMinimum wall thickness atany point, mils18 16 0.75 1.0 8 714 12 1.5 2.5 10 9106 410 15 1342 1625 25 233550451/0 2/0 50 70 60 543/0 4/0 95 65 596.4 Shield6.4.1 A shield shall be of metal and shall consist of one or more
23、 of the following, but otherwise is notspecified:SEPTEMBER 14, 2010SUBJECT 27336UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULa) A laminated shield tape of polymeric material and metal(s) with or without a metal coated oruncoated (uncoated n
24、ot acceptable with an aluminum-faced tape) copper or copper alloy drainwire in contact with the metal(s) part of the tape. The tape may be applied with the metal(s)side in or out. The size of a drain wire is not specified. A drain wire may be solid or stranded.b) A serving, wrap, or braid of coated
25、or uncoated copper wires.6.5 Jacket6.5.1 The jacket material shall be one described in the Tables in Section 50 of the Reference Standardfor Electrical Wires, Cables, and Flexible Cords, UL 1581, suitable for the temperature rating of the cable.Regardless of what is noted in the Table, the minimum u
26、naged tensile strength value shall be 8.27 MPa(1200 psi).6.5.2 The jacket thickness shall comply with the requirements in Table 6.2.PERFORMANCE7 General7.1 The following tests shall be performed in accordance with, and comply with the requirements of theReference Standard for Electrical Wires, Cable
27、s, and Flexible Cords, UL 1581, unless otherwise specifiedbelow.7.1.1 Detailed examination7.1.1.1 Conductor In accordance with the tests, Conductor diameter, or Cross-sectional area bydiameter method in the Standard for Wire and Cable Test Methods, UL 2556. In case of dispute, the testDC resistance
28、in UL 2556 shall be the referee method. Refer to the applicable table in Section 30 of theReference Standard for Electrical Wires, Cables, and Flexible Cords, UL 1581 for the maximumrequirement for AWG sized conductors, and the applicable table in Conductors of insulated cables, IEC60228 for metric
29、conductors.7.1.1.2 Insulation and jacket thickness In accordance with the method Thickness, in the Standard forWire and Cable Test Methods, UL 2556.7.1.2 Physical properties of insulation and jacket Values for the materials as stated in the applicabletable in Section 50 of the Reference Standard for
30、 Electrical Wires, Cables, and Flexible Cords, UL 1581before and after air-oven aging. Regardless of what is noted in the table, the insulation and jacket shallhave a minimum unaged tensile strength 8.27 MPa (1200 psi).7.1.3 Conductor corrosion (uncoated copper only) The aging time and temperature s
31、hall be the sameas used for Physical properties of insulation described in 7.1.2. Upon examination of the conductor afterremoval of the insulation, there shall be no evidence of pitting or corrosion of the conductor.7.1.4 Heat shock (thermoplastic insulation or jacket only) Specimens of finished cab
32、le are to beconditioned for one hour at the temperature shown in Table 7.1 based on material. The specimens shallbe wrapped for six close turns around the mandrel. Specimens with an overall diameter greater than 15.9mm (0.625 inch) are to be wrapped in a U-bend around the madrel. The mandrel used sh
33、all be two times(2X) the diameter of the finished cable. Upon visual examination, there shall be no cracks in the outerlayer (insulation or jacket), as applicable.SEPTEMBER 14, 2010 SUBJECT 2733 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM U
34、L7.1.5 Cold bend Specimens of finished cable shall be conditioned for 4 hours at minus 30C (minus22F) or minus 40C (minus 40F) for optional minus 40C rating. The specimens shall be wrapped for sixclose turns around the mandrel. Specimens with an overall diameter greater than 15.9 mm (0.6 inch) areto
35、 be wrapped in a U-bend around the mandrel. The mandrel used shall be two times (2X) the diameterof the finished cable. There shall be no cracks, tears or splits in the outer later (insulation or jacket), asapplicable.7.1.6 Deformation (thermoplastic excluding fluoropolymers and XL insulation or jac
36、ket only) Specimens shall be conditioned at the temperature shown in Table 7.1. The load applied during the testshall be as shown in Table 7.2. The decrease in thickness shall not be more than 50%.Table 7.1Heat shock and deformation test temperaturesMaterial Temperature rating of cable,CConditioning
37、 temperature,2.0CConditioning temperature,3.6FFRPE or PE 60 or 75 100 212TPE 60, 75, 90, or 105 150 302All other materials 60, 75, 90, or 105 121 250Table 7.2Deformation loadSize of conductor, AWG Size of conductor, mm2Loadgf N18 12 0.75 2.5 400 3.9210 7 4 10 500 4.906 1 16 35 1600 15.721/0 4/0 and
38、all jackets 50 95 2000 19.617.1.7 Flexibility The test shall be conducted in accordance with the test Flexibility Test of Insulation,Covering, and Jacket in the Standard for Appliance Wiring Material, UL 758. The aging time andtemperature shall be the same as used for Physical properties of insulati
39、on and jacket described in 7.1.2.The mandrel used shall be two times (2X) the diameter of the finished cable. The specimen shall bewrapped around the mandrel for 6 adjacent turns. Specimens with an overall diameter of greater than 15.9mm (0.625 inches) are to be wrapped in a U-bend. Upon visual exam
40、ination, there shall be no cracks inthe insulation or jacket.7.1.8 Impact at abnormally low temperature The test shall be conducted at minus 30C (minus 22F) oroptionally minus 40C (minus 40F). There shall be no cracks, ruptures, or other damage in 8 of the 10specimens.7.1.9 Horizontal Specimen/FT2 f
41、lame test7.1.10 VW-1 (Vertical-specimen) flame test (optional)SEPTEMBER 14, 2010SUBJECT 27338UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL7.1.11 Durability of indelible-ink printing The aging time and temperature shall be 168 hours at the r
42、atedtemperature of the cable.7.1.12 Dielectric voltage-withstand test of straight foil-wrapped specimens Specimens of finished cablewith any shield and jacket removed shall be subjected to this test. A potential of twice the rated voltageplus 1000 V ac or dc (based on rating) shall be applied betwee
43、n the conductor and the foil. The testvoltage is to be applied for 1 minute.7.1.13 Crushing resistance of overall construction Per the Standard for Wire and Cable Test Methods,UL 2556, Crush resistance test, method 1 (two steel plates). The smallest conductor size shall be tested.Any shield shall be
44、 electrically connected to the steel plates. The average force of the ten crushing trialsshall not be less than 2.67 kN (600 lbf).7.1.14 Abrasion test (method 1)7.1.14.1 A finished cable shall not wear through exposing the conductor or shield in fewer than 70complete cycles of abrasion against sharp
45、 steel edges. The test is to be conducted as described below.7.1.14.2 Six straight untwisted 380 mm (15 inch) specimens are to be cut from a sample length of finishedcable. They are to be laid flat and parallel to one another on a flat horizontal steel plate and are to beindividually secured in plac
46、e at their ends. An abrasion tool consisting of a weighted solid steelright-circular cylinder across one face of which three straight parallel teeth are machined symmetricallyabout a diameter (see Figure 7.1) is to be supported above (not touching) the center of each specimenwith its teeth perpendic
47、ular to the longitudinal axis of the specimen. The support is to minimize the playof the tool at the ends of each stroke during the abrasion process. Die-and-tool steel alloy KW hardenedafter machining to Rockwell C 62. The teeth are to be sharpened to an edge having no burrs every 1600 2500 cycles.
48、 The hardness is to be checked after each sharpening and, if necessary, the teeth are tobe re-hardened. The abrasion tools are to be used and re-sharpened in sets. Hence, at least two sets ofsix are needed.7.1.14.3 The plate on which the specimens are mounted is to be made to reciprocate horizontall
49、y insimple harmonic motion at 30 cycles per minute in the direction parallel to the longitudinal axes of thespecimens. The stroke is to center on the abrasion tools, and the length of stroke is to be the 150 mm (6inch) occupying the center portion of the specimens.7.1.14.4 The test is to be started with the plate on which the specimens are mounted at rest at either endof the stroke and the stroke counter set at zero and for the beginning of a cycle. Weight is to be addedto the top of each o
