1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULMAY 11, 20181UL 2277Outline of Investigation for Flexible Motor Supply Cable and Wind TurbineTray CableIssue Number: 4May 11, 2018Summary of TopicsThis is the Fourth Issue of the Outline of Inves
2、tigation for Flexible MotorSupply Cable and Wind Turbine Tray Cable. This issue includesrequirements for markings in order to meet the new requirements forflexible motor supply cable in the Electrical Standard for IndustrialMachinery, NFPA 79.ULs Outlines of Investigation are copyrighted by UL LLC.
3、Neither a printed norelectronic copy of an Outline of Investigation should be altered in any way. All ofULs Outlines of Investigation and all copyrights, ownerships, and rights regardingthose Outlines of Investigation shall remain the sole and exclusive property of ULLLC.COPYRIGHT 2018 UL LLCUL COPY
4、RIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULMAY 11, 2018UL 22772No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONTENTSINTRODUCTION1 Scope .42 Units of Measurement .43
5、Components 44 Undated References 5CONSTRUCTION5 Materials and Dimensions .56 Assembly 5PERFORMANCE7 General 6MARKINGS8 Information on or in the Cable .69 Information on the Tag, Reel, or Carton .7MAY 11, 2018 UL 2277 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WIT
6、HOUT PERMISSION FROM ULINTRODUCTION1 Scope1.1 This outline covers the requirements for Wind Turbine Tray Cable (WTTC) rated 1000 volts, 90 200C dry and optionally rated 90C wet. It also covers the requirements for Flexible Motor Supply Cablerated 1000 or 2000 volts and 90C dry. The cables are for us
7、e as noted in 1.2 1.4.1.2 Wind turbine power and control cable is intended to be installed in cable trays or raceways within awind turbine generator.1.3 Flexible motor supply cable (Flexible VFD Servo Cable) is intended for use with variable frequencydrives subjected to non-linear power distortions.
8、1.4 These cables are intended for use in accordance with the applicable parts of the National ElectricalCode (NEC), NFPA 70.2 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 tha
9、t make the requirement conveniently usable incountries employing the metric system (practical 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
10、is applied in metric terms.3 Components3.1 Except as indicated in 3.2, a component (including 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 requirem
11、ent that:a) Involves a feature or characteristic not required 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.3.3 A component shall be used in accordance with its rating established for t
12、he intended conditions ofuse.3.4 Specific components are incomplete in construction features 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 sp
13、ecific conditions.MAY 11, 2018UL 22774UL COPYRIGHTED MATERIAL NOT AUTHORIZED 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 ref
14、erring to the latest edition of that code or standard.CONSTRUCTION5 Materials and Dimensions5.1 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 awel
15、l-equipped factory.5.2 Each material used in a cable shall be compatible with all of the other materials used in the cable.5.3 These cables shall comply with the construction requirements for cables rated 600 or 2000 volts, asapplicable, in the Standard for Electrical Power and Control Tray Cables w
16、ith Optional Optical-FiberMembers, UL 1277, except as noted in 5.4 and 5.5.5.4 For Flexible Motor Supply Cable, the conductors shall be copper and in accordance with the Standardfor Flexible Cords and Cables, UL 62, or conductors for flexing service in the Standard for Machine-ToolWires and Cables,
17、UL 1063. The thickness of insulation of Flexible Motor Supply Cable rated 2000 voltsshall be the same as 2000 volt-rated Type RHW in accordance with the Standard for Thermoset-InsulatedWires and Cables, UL 44.5.5 For Wind Turbine Tray Cable, the conductors shall be only copper, copper-clad aluminum,
18、 or anacceptable aluminum alloy in accordance with the Standard for Electrical Power and Control Tray Cableswith Optional Optical-Fiber Members, UL 12776 Assembly6.1 Wind Turbine Tray cable is a jacketed assembly of two or more 18 AWG to 2000 kcmil conductors.6.2 Flexible Motor Supply Cable may be a
19、 single 22 AWG to 500 kcmil conductor or a jacketed assemblyof two or more 22 AWG to 4/0 AWG conductors. Cables rated 2000 volts shall not have conductorssmaller than 14 AWG. Aluminum conductors shall not be smaller than 12 AWG.MAY 11, 2018 UL 2277 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER
20、 REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULPERFORMANCE7 General7.1 These cables shall comply with the required performance requirements in the Standard for ElectricalPower and Control Tray Cables with Optional Optical-Fiber Members, UL 1277, except as noted in 7.2and 7.3.7.2 The dielectr
21、ic withstand and spark tests voltages shall be in accordance with the requirements forwires rated 1000 or 2000 volts in the Standard for Thermoset-Insulated Wires and Cables, UL 44.Conductors rated 600 volts shall be tested as if the rating is 1000 volts.7.3 For 1000 volt-rated cables that are not m
22、arked with a type designation, the insulated conductors shallmeet all performance requirements for conductors rated 90 200C, as applicable, and 600 volts. Theconductors shall not be surface printed with any type letter designation.For 1000 volt-rated cables, the insulated conductors shall meet all p
23、erformance requirements forconductors rated 90C and 1000 volts.For 2000 volt-rated cables, the insulated conductors shall meet all performance requirements forconductors rated 90C and 2000 volts.MARKINGS8 Information on or in the Cable8.1 The information required on the cable shall be the same as in
24、 Section 29 of the Standard for ElectricalPower and Control Tray Cables with Optional Optical-Fiber Members, UL 1277, including the indication ofall optional ratings with the following exceptions:a) Wind Turbine Tray Cable or WTTC and/or Flexible Motor Supply Cable or FlexibleVFD Servo Cable as appl
25、icable, in place of Type TC.b) 1000 volts or 1000 V,or2000 volts or 2000 V, as applicable.c) Dry and wet temperature rating(s) as applicable.d) Optional For 1000 volt-rated cables using 1000 volt-rated conductors and for 2000 volt-rated cables using 2000 volt-rated conductors, the type letters of th
26、e NEC conductors usedfollowed by the designation cdrs, condrs or conductors.e) Direct Burial is not permitted on Wind Turbine Tray Cable.f) ER is not permitted on Wind Turbine Tray Cable or Flexible Motor Supply Cable.MAY 11, 2018UL 22776UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTIO
27、N ORDISTRIBUTION WITHOUT PERMISSION FROM UL9 Information on the Tag, Reel, or Carton9.1 The information required on the tag, reel, or carton shall be the same as in Section 30 of the Standardfor Electrical Power and Control Tray Cables with Optional Optical-Fiber Members, UL 1277, with theexceptions
28、 shown in 8.1 and the following statement(s):a) Wind Turbine Cable Wind Turbine Tray Cable for installation within a wind turbinegenerator in accordance with Article 336 and other applicable parts of the National ElectricalCode.b) Flexible Motor Supply Cable Flexible Motor Supply Cable or Flexible VFD Servo Cableintended for use with variable frequency drives subjected to non-linear power distortions.MAY 11, 2018 UL 2277 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULMAY 11, 2018UL 22778No Text on This Page
