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1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL May 1, 2009 1 SUBJECT 6140 OUTLINE OF INVESTIGATION FOR WIND TURBINE GENERATING SYSTEMS Issue No. 1 May 1, 2009 Summary of Topics This is the fi rst issue of the Subject 6140 Outline of Investi
2、gation for Wind Turbine Generating Systems. The UL Foreword is no longer located within the UL Standard. For information concerning the use and application of the requirements contained in this Standard, the current version of the UL Foreword is located on ULStandardsInfoNet at: http:/ COPYRIGHT 200
3、9 UNDERWRITERS LABORATORIES INC. UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MAY 1, 2009SUBJECT 61402 No Text on This Page ? UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTE
4、NTS INTRODUCTION 1 Scope . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 2 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
5、. . . . . . . . . . . . . . . . . . . . . . . . .4 2.1 Components . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4 2.2 Units of Measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
6、. . . . . . . . . . . . . . . . . . . . . .5 2.3 Undated References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 3 Special Components and Subassemblies of WTGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
7、. . . . . . .5 3.1 Wiring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5 3.2 Cable drip loop. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
8、. . . . . . . . . .6 3.3 Bus bars . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6 3.4 Switchgear . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
9、. . . . . . . . . . . . .8 3.5 Transformers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .8 3.6 Hub . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
10、 . . . . . . . . . . . . . . . . . .9 3.7 Converter/Inverter . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 3.8 Lightning protection systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
11、 . . . . . . . . . . . .9 3.9 Slip rings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .9 3.10 Gearboxes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
12、 . . . . . . . . . . . . . .10 3.11 Hoists and winches . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .10 3.12 Fire alarms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
13、. . . . . . . . . . . .11 3.13 Emergency stop . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11 CONSTRUCTION WTGS AND SUBASSEMBLY 4 General . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
14、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 5 Disconnection Device . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .12 6 Spacings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .13 7 Energy Storage Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 7.1 General. . . . . . . . . . . . . . . . . . . . . .
16、. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 7.2 Battery mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14 8 Working Space . . . . . . . . . . . . . . . . . . . . .
17、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .15 9 Safety Related Controls System (SRCS) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 9.1 General . . . . . . . . . . . . . . . . . . . . . . . . .
18、 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 9.2 Protection functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .16 9.3 Abnormal conditions for safety related controls system .
19、 . . . . . . . . . . . . . . . . . . . . . . . . . . . .17 APPENDIX A Standards for Components. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . A1 MAY 1, 2009SUBJECT 61403 ? UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER R
20、EPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 This Outline of Investigation covers Wind Turbine Generating Systems (WTGS) and electrical subassemblies. These units are intended for use in stand-alone (not grid-connected) or utility interactive applications. Utility-
21、interactive WTGS are operated in parallel with an electric power system (EPS) to supply power to common loads. 1.2 The WTGS power, control and protection systems are evaluated only to the extent that they function within the manufacturers specifi ed limits and response times. These control and prote
22、ction functions are evaluated with respect to risk of electric shock and fi re. It is intended that the electrical subassemblies that address power transfer control and protection functions evaluated per this document are to be coordinated with the mechanical and structural evaluation of the WTGS in
23、 accordance with the IEC 61400 series documents or Germanischer Lloyd WindEnergie GMBH: Guideline for the Certifi cation of Wind Turbines documents. 1.3 This Outline of Investigation does not cover: a) WTGS intended for off-shore installation. b) Mechanical or structural integrity of the WTGS or sub
24、assemblies. c) Coordination of electrical and mechanical systems to maintain the WTGS within its safe mechanical and structural limits. d) Mechanical loading of ladders, scaffolding, personnel tie offs, or other personnel load bearing functional parts. 1.4 The products, systems, and subassemblies co
25、vered by these requirements are intended to be installed in accordance with the National Electrical Code, ANSI/NFPA 70. 2 General 2.1 Components 2.1.1 Except as indicated in 2.1.2, a component of a product covered by this Outline shall comply with the requirements for that component. See Appendix A
26、for a list of standards covering components used in the products covered by this Outline. See also Section 3, Special Components and Subassemblies of WTGS. 2.1.2 A component is not required to comply with a specifi c requirement that: a) Involves a feature or characteristic not required in the appli
27、cation of the component in the product covered by this Outline, or b) Is superseded by a requirement in this Outline. MAY 1, 2009SUBJECT 61404 UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 2.1.3 A component shall be used in accordance with
28、 its rating established for the intended conditions of use. 2.1.4 Specifi c 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 not exceeding specifi ed limits,
29、and shall be used only under those specifi c conditions. 2.1.5 Components and subassemblies of the overall WTGS shall be evaluated and found suitable for operation over the normal range of electrical and environmental conditions as specifi ed by the WTGS manufacturer. 2.2 Units of Measurement 2.2.1
30、Values stated without parentheses are the requirement. Values in parentheses are explanatory or approximate information. 2.3 Undated References 2.3.1 Any undated reference to a code or standard appearing in the requirements of this Outline of Investigation shall be interpreted as referring to the la
31、test edition of that code or standard. 3 Special Components and Subassemblies of WTGS 3.1 Wiring 3.1.1 Internal wiring shall comply with the Standard for Industrial Control Equipment, UL 508, in addition to the requirements in this section. 3.1.2 Wiring that is subject to movement, fl exing, or twis
32、ting during operation of the wind turbine shall be investigated for suitability in the conditions of use and rated life or cycle time. 3.1.3 All wiring within a WTGS that is large enough for service personnel to enter the structure shall be rated for tray cable usage. The following meet the intent o
33、f the requirement: a) Multiconductor cable complying with the Outline of Investigation for Flexible Motor Supply Cable and Wind Turbine Tray Cable, Subject 2277, and marked for Wind Turbine usage. b) Power-limited circuit cabling complying with the Standard for Power-Limited Circuit Cables, UL 13, s
34、uitable for Tray Cable usage (Types CMG, CM, CL2, CL3, PLTC, CMR, CL2R, CL3R, CMP, CL2P, CL3P). c) Optical fi ber circuits complying with the Standard for Optical Fiber Cable, UL 1651. d) Power cabling complying with the Standard for Thermoplastic-Insulated Wires and Cables, UL 83, or the Standard f
35、or Thermoset-Insulated Wires and Cables, UL 44, and additionally marked for Cable Tray usage (“CT”, “For Cable Tray Use”, “For CT Use”, or “For Use in Cable Trays”) or marked FT4. Exception:Wiring within a component need only meet the requirements for the component. Note: For Canada, an FT4 rating i
36、s required per the Canadian Electrical Code. MAY 1, 2009SUBJECT 61405 UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 3.1.4 Wiring within a rotating hub shall be additionally protected from mechanical damage. Such protection may be provided
37、by enclosures or conduit complying with the Standard for Metallic Outlet Boxes, UL 514A, and/or the Standard for Conduit, Tubing, and Cable Fittings, UL 514B, mechanical shielding, or the equivalent. 3.1.5 Wiring subjected to exposure to water or oil during normal or abnormal conditions such as a ga
38、sket or seal leak shall be suitably rated for the condition. 3.1.6 Wiring subjected to UV exposure shall be rated for exposure to sunlight. 3.2 Cable drip loop 3.2.1 If operation of the wind turbine may result in twisting of fl exible cables, such as the connecting cables between rotating parts (nac
39、elle) and parts of the fi xed structure (tower or foundation), the operational conditions of use shall not cause damage to the conductors or their insulation. The evaluation shall address service life, electrical and environmental operating conditions of the subassembly. 3.2.2 Controls that prevent
40、damage to conductors or their insulation including rotational limits shall be considered part of the Safety Related Controls System evaluation of this document. The Control shall be designed such that resetting to the neutral position is possible. See Section 9, Safety Related Controls System (SRCS)
41、. 3.3 Bus bars 3.3.1 Sections of bus shall be suitably attached to the tower or to components of the tower intended to support the bus. The compliance of the attachment method shall be determined by subjecting a representative bus to Impact, Static Load, and Flexing tests. 3.3.2 Bus shall be guarded
42、 or insulated to prevent unintentional contact in accordance with the following: a) Bus shall be metal enclosed at each work platform for a minimum of 8 feet above each platform. b) In areas other than work platforms, bus operating at 2500 V or more shall be metal enclosed. c) In areas other than wo
43、rk platforms, bus operating at less than 2500 V shall be metal enclosed, enclosed in a non-metallic enclosure complying with the Standard for Polymeric Materials Use in Electrical Equipment Evaluations, UL 746C, or the conductors shall be protected by insulation and jacket that would be required of
44、comparable tray cables specifi ed by the Outline for Flexible Motor Supply Cable and Wind Turbine Tray Cable, Subject 2277, the Standard for Electrical Power and Control Tray Cables with Optional Optical-Fiber Members, UL 1277, and the Standard for Thermoplastic-Insulated Wires and Cables, UL 83. 3.
45、3.3 Where cables are connected to bus assemblies, suitable wiring terminals shall be provided. Where the anticipated movement of the tower assembly causes movement of the cable or bus assembly, strain relief shall be provided to prevent movement of the connection. MAY 1, 2009SUBJECT 61406 UL COPYRIG
46、HTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 3.3.4 Performance requirements shall be based on the Standard for Busways, UL 857, for bus rated 600 V or less and on the Standard for Metal Enclosed Bus, IEEE C37.23, for bus rated more than 600 V. Perf
47、ormance testing shall include electrical and mechanical tests. See 3.3.5 and 3.3.6. 3.3.5 The following electrical tests shall be conducted: a) Continuous Current (Heating), b) Dielectric Withstand (Applied Potential) for all voltage ratings, c) Impulse Withstand for bus rated more than 2.2kV, d) Sh
48、ort Circuit Withstand for bus assemblies rated up to 600V, and e) Momentary and Short-Time tests for bus assemblies rated greater than 600V. 3.3.6 The mechanical tests specifi ed in (a), (b), and (c) shall be conducted. The parameters for vibration and fl exing tests are to be determined based on th
49、e amount of fl exing transmitted to the bus assembly through movement of the wind turbine and tower under anticipated extreme conditions determined based upon the WTGS calculations in Wind turbines Part 1: Design requirements, IEC 61400-1. a) Impact Tests Ambient and cold impacts shall be conducted on the enclosure, housing or insulator as specifi ed in the Standard for Busways, UL 857, or the Standard for Metal Enclosed Bus, IEEE C37.23, the Standard for Polymeric Materials Use in Electrical Equipment E