UL 6141-2016 Standard for Safety Wind Turbines Permitting Entry of Personnel (Issue 1).pdf

1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 6141 Wind Turbines Permitting Entry of Personnel STANDARD FOR SAFETYUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED M

2、ATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Wind Turbines Permitting Entry of Personnel, UL 6141 First Edition, Dated May 20, 2016 Summary of Topics This is the First Edition of UL 6141, Standard for Safety for Wind Turbines P

3、ermitting Entry of Personnel, covering large wind turbine systems that are equipped with electrical subassemblies and permit the entry of personnel, where a user or service person may, or is intended to, enter the turbine to operate it or perform maintenance. These wind turbines are intended for use

4、 in utility-interactive, grid-tied applications that operate in parallel with an electric power system (EPS) to supply power to common or stand-alone loads. The requirements are substantially in accordance with Proposal(s) on this subject dated September 18, 2015 and January 22, 2016. All rights res

5、erved. 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 expressed or

6、implied, including but not limited to, the implied warranties of merchantability or tness for any purpose. In no event will UL be liable for any special, incidental, consequential, indirect or similar damages, including loss of prots, lost savings, loss of data, or any other damages arising out of t

7、he use of or the inability to use this Standard, even if UL or an authorized UL representative has been advised of the possibility of such damage. In no event shall ULs liability for any damage ever exceed the price paid for this Standard, regardless of the form of the claim. Users of the electronic

8、 versions of ULs Standards for Safety agree to defend, indemnify, and hold UL harmless from and against any loss, expense, liability, damage, claim, or judgment (including reasonable attorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronic Standard on

9、 the purchasers computer system. MAY 20, 2016 UL 6141 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MAY 20, 2016 UL 6141 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PER

10、MISSION FROM UL MAY 20, 2016 1 UL 6141 Standard for Wind Turbines Permitting Entry of Personnel First Edition May 20, 2016 This ANSI/UL Standard for Safety consists of the First Edition. The most recent designation of ANSI/UL 6141 as an American National Standard (ANSI) occurred on May 20, 2016. ANS

11、I 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 submitted via a Proposal Request in ULs On-Line Collaborative Standards Development Sys

12、tem (CSDS) at http:/. 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 rights regarding those Standards shall remain the sole and exclusive property of UL. COPYRI

13、GHT 2016 UNDERWRITERS LABORATORIES INC. ANSI/UL 6141-2016UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MAY 20, 2016 WIND TURBINES PERMITTING ENTRY OF PERSONNEL - UL 6141 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURT

14、HER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .5 2 General 6 2.1 Components .6 2.2 Units of Measurement .7 2.3 Undated References 7 3 Glossary .7 WIND TURBINE EQUIPMENT AND SUBASSEMBLIES 4 Special Components and Subassemblies of Wind Turbines 9 4.1 General

15、 .9 4.2 Wiring 12 4.3 Splices and connections in power cables .17 4.4 Cable twist loop .18 4.5 Bus bars .18 4.6 Switchgear .20 4.7 Panelboards 21 4.8 Transformers .21 4.9 Hub23 4.10 Converter/inverter 24 4.11 Lightning protection systems .24 4.12 Slip rings 25 4.13 Gearboxes 26 4.14 Hoists and winch

16、es .27 4.15 Fire protection .27 4.16 Emergency stop functionality for personnel protection .27 4.17 Cable trays and wireways .29 4.18 Hydraulic electromechanical components 29 4.19 Alternators, generators and motors .29 4.20 Motor drives .31 4.21 Energy storage units 32 4.22 Disconnect devices .34 4

17、.23 Battery charge controllers .34 4.24 Medium voltage disconnection means 35 4.25 Heating and cooling equipment 35 4.26 Wind turbine tower elevators .35 5 Spacings 35 6 Components and Circuits Rated or Operating between 601V and 1000V .37 7 Grounding 38 8 Safety Related Controls System (SRCS) 39 8.

18、1 General 39 8.2 Protection functions 39 8.3 Abnormal conditions for safety related controls system .40 9 Manual Shutdown 40 10 Self-Excitation 41 11 Ratings 41 SERVICE PERSONNEL SAFETY MAY 20, 2016 WIND TURBINES PERMITTING ENTRY OF PERSONNEL - UL 6141 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FUR

19、THER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 12 Working Space .42 MARKINGS 13 System and Subassembly Components .43 14 Cautionary Markings 48 INSTRUCTIONS 15 General Installation System and Subassembly 50 APPENDIX A UL Standards for Components A1 APPENDIX B IEC Standards for Componen

20、ts APPENDIX C IEEE Standards for Components MAY 20, 2016 WIND TURBINES PERMITTING ENTRY OF PERSONNEL - UL 6141 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover large wind turbine systems (WT)

21、 that are equipped with electrical subassemblies and permit the entry of personnel. With respect to this standard, WT permitting entry of personnel are considered to be wind turbines where a user or service person may, or is intended to, enter the turbine to operate it or perform maintenance. These

22、WT are intended for use in utility-interactive, grid-tied applications that operate in parallel with an electric power system (EPS) to supply power to common or stand-alone loads. This standard includes requirements for WT intended for EPS grid connections at transmission, sub-transmission, and dist

23、ribution levels depending on the specications of the specic WT. 1.2 The WT power, control and protection systems are evaluated only to the extent that they function within the manufacturers specied limits and response times. These control and protection functions are evaluated with respect to risk o

24、f electric shock and re. It is intended that the electrical subassemblies that address power transfer and control and protection functions evaluated per this document are to be coordinated with the mechanical and structural evaluation of the WT in accordance with the IEC 61400 series of documents. 1

25、.3 These requirements do not cover: a) Wind turbine generating systems intended for offshore installation, b) Mechanical or structural integrity of the WT or subassemblies, c) Verication that the manufacturer-dened controls and protection limits maintain the WT within its safe mechanical and structu

26、ral limits, d) Compliance with specic grid interconnection standards or requirements. 1.4 The wind turbine products covered by these requirements are intended to be installed in multiple installation locations and jurisdictions which may include installation codes including, but not limited to, the

27、National Electrical Code, ANSI/NFPA 70, the National Electrical Safety Code (NESC), and NFPA 79, Electrical Standard for Industrial Machinery. 1.5 The wind turbine products covered by this standard are considered to be machines that include inherent internal hazards that make them unsuitable for acc

28、ess by the general public. 1.6 The users, operators and service persons that enter this equipment are expected to have the necessary knowledge of its operation and reasonably foreseeable hazards. These individuals are expected to be equipped with the necessary equipment for the application and hazar

29、d. 1.7 The evaluation of products to this standard includes the evaluation of all features and functions incorporated in or available for the WT that can affect compliance of the WT with this standard. This includes references in the documentation for the WT. MAY 20, 2016 WIND TURBINES PERMITTING EN

30、TRY OF PERSONNEL - UL 6141 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 1.8 Small WT and electrical subassemblies are dened as wind turbines where a user or service person is not intended or required to enter the WT to operate or perform

31、 maintenance on the WT. Small wind systems are covered in the Standard for Small Wind Turbine Systems, UL 6142. 2 General 2.1 Components 2.1.1 Except as indicated in 2.1.2, a component of a product covered by this standard shall comply with the requirements for that component. See AppendicesACf o ra

32、list of standards covering components used in the products covered by this standard. 2.1.2 A component is not required to comply with a specic requirement that: a) Involves a feature or characteristic not required in the application of the component in the product or system covered by this standard,

33、 b) Is superseded by a requirement in this standard, or c) Is not relied upon for compliance with the National Electric Code, ANSI/ NFPA 70, and other U.S. installation codes, provided the component addresses the performance and safety critical aspects necessary for the end application as determined

34、 by the evaluation in this standard. Note: the following provides guidance for item (c) 1) Integral WT components relied upon to interconnect with and/or protect system components, system wiring, loads, etc. shall be of the type(s) dened in the applicable portion of the National Electric Code and sh

35、all comply with the applicable portions of the UL standards or standards referenced in the National Electric Code and in Appendix A for that component type or function. They shall be suitable for the application within the end product application, including the end product ratings and including fore

36、seeable abnormal conditions. Examples include, but are not limited to, branch overcurrent protection, switches, disconnects, wire, cable, connectors, contactors, etc. 2) External WT system components (not integral to the WT) shall comply with applicable UL standard for that component. 2.1.3 A compon

37、ent shall be used in accordance with its rating established for the intended conditions of use. 2.1.4 Specic 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

38、not exceeding specied limits, and shall be used only under those specic conditions. 2.1.5 Components and subassemblies of the overall WT shall be evaluated and found suitable for their operation over the rated normal operating range of electrical and environmental conditions within the WT per the WT

39、 manufacturers specications. 2.1.6 These components and subassemblies shall also perform per the manufacturers specications during dened abnormal conditions, such as WT shutdown and abnormal electric utility grid conditions. MAY 20, 2016 WIND TURBINES PERMITTING ENTRY OF PERSONNEL - UL 6141 6UL COPY

40、RIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 2.1.7 For additional requirements, reference Section 4, Special Components and Subassemblies of Wind Turbines. 2.2 Units of Measurement 2.2.1 Values stated without parentheses are the requirement. Val

41、ues in parentheses are explanatory or approximate information. 2.2.2 All references to AC voltages within this standard shall be considered to be RMS unless otherwise specied. 2.2.3 All references to DC voltages within this standard shall be considered to be maximum cyclic voltages unless otherwise

42、specied. 2.2.4 All references to voltages that are not specied as AC or DC shall be considered to be the nominal line-to-line AC RMS voltage. 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 t

43、he latest edition of that code or standard. 3 Glossary For the purpose of this standard, the following denitions apply. 3.1 DOWN TOWER The space in and around a wind turbine location that is at or near ground level such as the base level of the turbine tower. 3.2 ELECTRIC POWER SYSTEM (EPS) Equipmen

44、t or facilities that deliver electric power to a load(s). The most common example of an EPS is an electric utility. 3.3 MAXIMUM CURRENT(S) The maximum peak current(s) a wind turbine will produce. There may be several maximum current ratings dened for a product or system, such as alternator/generator

45、 output, inverter/converter output, and control output circuits. 3.4 MAXIMUM OUTPUT POWER The maximum average power output a wind turbine in normal steady-state operation will produce over a one minute period of time. Note that the peak power output can be greater. 3.5 MAXIMUM VOLTAGE The maximum pe

46、ak voltage a wind turbine will produce during operation, including open circuit conditions. 3.6 MEDIUM VOLTAGE More than 1000 Vac or 1500 Vdc. 3.7 NACELLE The housing or enclosure for the alternator/generator and other wind turbine parts that is generally located at the top of the tower. MAY 20, 201

47、6 WIND TURBINES PERMITTING ENTRY OF PERSONNEL - UL 6141 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 3.8 OVERVOLTAGE Any voltage having a peak value exceeding the corresponding peak value of maximum steady-state voltage at normal operati

48、ng conditions. 3.9 OVERVOLTAGE CATEGORY A numeric classication that denes a transient overvoltage condition: a) Overvoltage categories I, II, III, and IV are used per IEC 60664-1, Insulation coordination for equipment within low-voltage systems - Part 1: Principles, requirements and tests. b) The te

49、rm overvoltage category in this standard is synonymous with impulse withstand category used in IEC 60664-4-44, Low-voltage electrical installations - Part 4-44: Protection for safety Protection against voltage disturbances and electromagnetic disturbances. 3.10 PERSONAL PROTECTION SYSTEM Emergency stop system intended primarily to provide protection from moving, rotational, or electrical danger for personnel in the wind turbine. 3.11 POLLUTION Any addition of contaminants, solid