UL 67-2018 UL Standard for Safety Panelboards (Thirteenth Edition).pdf

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1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 67 Panelboards STANDARD FOR SAFETYUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER

2、 REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Panelboards, UL 67 Thirteenth Edition, Dated May 15, 2018 SUMMARY OF TOPICS: This New Edition of ANSI/UL 67 is issued to include the following changes in requirements: Addition of Requirements for Marking for Panelbo

3、ards Intended to be Connected to Uninterruptible Power Supplies (UPS) Addition of Requirements to Allow a Frequency Range for Dielectric Testing Update of Requirements for Separation of Circuits Section Clarication of Requirements for Temperature Testing of Panelboards with Breakers Incorporating In

4、tegral Neutral Connections The new/revised requirements are substantially in accordance with Proposal(s) on this subject dated January 19, 2018 and March 16, 2018. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted in any form by any mean

5、s, 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 implied, including but not limited to, the implied warranties of merchantability or tness for any purpose. In no event wil

6、l 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 the use of or the inability to use this Standard, even if UL or an authorized UL representative has been advised of the pos

7、sibility 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 versions of ULs Standards for Safety agree to defend, indemnify, and hold UL harmless from and against any loss, expense,

8、 liability, damage, claim, or judgment (including reasonable attorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronic Standard on the purchasers computer system. MAY 15, 2018 UL 67 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR

9、DISTRIBUTION WITHOUT PERMISSION FROM UL MAY 15, 2018 UL 67 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MAY 15, 2018 1 UL 67 Standard for Panelboards First Edition November, 1917 Second Edition July, 1928 Third Edi

10、tion April, 1931 Fourth Edition March, 1941 Fifth Edition November, 1948 Sixth Edition May, 1965 Seventh Edition July, 1967 Eighth Edition August, 1974 Ninth Edition August, 1979 Tenth Edition October, 1988 Eleventh Edition December, 1993 Twelfth Edition March, 2009 Thirteenth Edition May 15, 2018 T

11、his ANSI/UL Standard for Safety consists of the Thirteenth Edition. The most recent designation of ANSI/UL 67 as an American National Standard (ANSI) occurred on May 15, 2018. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, and Title Page. The Department of Defense (

12、DoD) has adopted UL 67 on June 18, 1990. The publication of revised pages or a new edition of this Standard will not invalidate the DoD adoption. 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 i

13、n ULs On-Line Collaborative Standards Development System (CSDS) at https:/. 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 shal

14、l remain the sole and exclusive property of UL. COPYRIGHT 2018 UNDERWRITERS LABORATORIES INC. ANSI/UL 67-2018UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MAY 15, 2018 PANELBOARDS - UL 67 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT A

15、UTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .8 2 Components9 3 Units of Measurement 10 4 Undated References .10 5 Glossary 11 CONSTRUCTION 6 General.19 6.1 All panelboards .19 6.2 Equipment on supply side of disconnect19 6.3 Distributio

16、n equipment .20 6.4 Service equipment.20 6.5 Branch circuits 22 6.6 Electrical connections 23 6.7 Field installable equipment .25 7 Enclosure .26 7.1 General 26 7.2 Component arrangement .27 7.3 Ventilating openings .27 8 Bases and Supports Insulating Material .29 9 Covers, Barriers, and Partitions3

17、1 9.1 General 31 9.2 Bushings .34 10 Filler Plates 35 11 Current-Carrying Parts 36 11.1 General .36 11.2 Bus bars, supports .38 11.3 Ampacity General 40 11.4 Main unit ratings .43 11.5 Neutral 44 11.6 Fuseholders and circuit breakers .45 12 Wiring Terminals45 12.1 General .45 12.2 Screw terminals 48

18、 13 Cord-Connectors .49 13.1 General .49 13.2 Input connections 50 13.3 Output connections .51 14 Switches, Circuit Breakers, and Overcurrent-Protective Devices 52 14.1 General .52 14.2 Ratings .53 14.3 Main and main-disconnect switches and circuit breakers 53 14.4 Switches 53 14.5 Overcurrent prote

19、ctive devices .54 14.6 Lighting and appliance panelboards 54 14.7 Fuseholders .56 14.8 Panelboards with integral inlet .57 MAY 15, 2018 PANELBOARDS - UL 67 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 15 Ground-Fault Protection .57 16 Sp

20、acings 59 16.1 General .59 16.2 Switches 63 16.3 Barriers and liners 64 16.4 Tape66 16.5 Tubing 66 17 Wiring Space, Wiring Gutters, and Wire Bending Space .67 17.1 General .67 17.2 Wiring space, wiring gutters, and terminal compartments70 17.3 Wire deection and bending space .75 17.4 Determination o

21、f deection and bending space distances .76 18 Grounding and Bonding .84 18.1 General .84 18.2 Equipment-grounding terminals 87 19 Sharp Edges .89 20 Separation of Circuits .90 PERFORMANCE 21 Temperature Test.90 21.1 General .90 21.2 Main lug.93 21.3 Main circuit breaker.94 21.4 Neutral 95 21.5 Clamp

22、ed joints .96 21.6 Other bus bar coatings96 21.7 Joints with insulators96 22 Rain Test 97 23 Strength of Insulating Base and Support Test 97 24 Mold Stress Relief Test97 25 Short-Circuit Current Test98 25.1 General .98 25.2 Sample selection 100 25.3 Sample preparation .101 25.4 Line connections 102

23、25.5 Load connections .106 25.6 Fuses107 25.7 Meter mounting positions.108 25.8 Short-circuit procedure .109 25.9 Short-circuit tests111 25.10 Evaluation of test results 112 26 Dielectric Voltage-Withstand Test 113 26.1 General .113 26.2 Joints with insulators 113 26.3 After short circuit 114 26.4 I

24、nsulating barriers .114 27 Bonding Resistance Test .114 28 Test Requirements for Panelboards Used as Transfer Equipment .114 MANUFACTURING AND PRODUCTION TESTS 29 Ground-Fault Protection Test115 MAY 15, 2018 PANELBOARDS - UL 67 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DIST

25、RIBUTION WITHOUT PERMISSION FROM UL RATING 30 General 115 31 Current .116 32 Voltage .117 33 Short Circuit Current Details.118 MARKING 34 Details .118 34.1 General 118 34.2 Wiring space and terminals.123 34.3 Field-installed conductors 124 34.4 Arrangement of terminals 125 34.5 Tightening torque .12

26、5 34.6 Enclosure type marking 128 34.7 Switches and circuit breakers .129 34.8 Lighting and appliance panelboards .129 34.9 Service equipment 130 34.10 Ground-fault protection .132 34.11 Distribution equipment 132 34.12 Field-installed equipment133 34.13 Equipment-grounding terminals 135 34.14 Fille

27、r plates137 34.15 Neutral .137 34.16 Parallel Power Source Panelboard .137 34.17 Panelboard with connection to Uninterruptible Power Supply 138 34.18 Panelboard with provisions for cord connections .138 35 Permanence of Marking 139 INSTALLATION INSTRUCTIONS 36 Field Testing of Ground-Fault Protectio

28、n of Equipment .139 SUPPLEMENT SA - PANELBOARDS FOR USE UNDER USCG ELECTRICAL ENGINEERING REGULATIONS SUBCHAPTER J (46 CFR, PARTS 110 113) PANELBOARDS FOR MARINE USE SA1 Scope SA1 SA2 Enclosure.SA1 SA3 Current-Carrying Parts .SA2 SA4 Switches, Circuit Breakers, and Overcurrent Protection.SA2 SA5 Ins

29、ulating Material .SA3 SA6 Marking SA3 MAY 15, 2018 PANELBOARDS - UL 67 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL SUPPLEMENT SB - CLASSIFIED CIRCUIT BREAKERS FOR USE WITH SPECIFIED PANELBOARDS AS AN ALTERNATE FOR SPECIFIED CIRCUIT BREA

30、KERS INTRODUCTION SB1 Scope SB1 SB2 GlossarySB1 CONSTRUCTION SB3 General SB1 PERFORMANCE SB4 General SB2 SB5 Insertion and Withdrawal Test .SB2 SB6 Temperature TestSB3 SB7 Short-Circuit Current Test.SB3 MARKING SB8 Details .SB4 SUPPLEMENT SC - CLASSIFIED MOLDED-CASE SURGE PROTECTIVE DEVICES (SPDs) F

31、OR USE WITH SPECIFIED PANELBOARDS INTRODUCTION SC1 ScopeSC1 SC2 Glossary .SC1 CONSTRUCTION SC3 General SC2 PERFORMANCE SC4 General SC2 SC5 Insertion and Withdrawal Test.SC3 MARKING SC6 Details .SC3 APPENDIX A Standards for ComponentsA1 MAY 15, 2018 PANELBOARDS - UL 67 6UL COPYRIGHTED MATERIAL NOT AU

32、THORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Appendix B (Informative) Explanatory Information Regarding Wire Deection And Bending Distances MAY 15, 2018 PANELBOARDS - UL 67 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMIS

33、SION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover panelboards to be employed in accordance with the National Electrical Code, NFPA 70. 1.2 These requirements cover panelboards for the control and protection of electric lighting and appliance branch circuits, and power circuits, includin

34、g feeder distribution panelboards. They also cover units specically designed for panelboard assembly. 1.3 These requirements do not cover: a) Distribution equipment which sole function is the automatic or nonautomatic transferring of one or more load conductor connections from one power source to an

35、other. Reference the Standard for Transfer Switch Equipment, UL 1008. b) Factory wired assemblies of industrial control equipment intended to control industrial processes. Reference the Standard for Industrial Control Panels, UL 508A. c) Distribution equipment containing only one circuit subdivision

36、, unless also provided with a meter socket. See 6.5.1. Reference the Standard for Molded-Case Circuit Breakers, Molded- Case Switches and Circuit-Breaker Enclosures, UL 489. d) Distribution equipment intended to serve as a means for distributing power required to operate mobile or temporarily instal

37、led equipment. Reference the Standard for Power Outlets, UL 231. e) Factory wired assemblies of controllers, timers, temperature regulating equipment and such, intended for control of equipment for use with swimming pools, hot tubs, and/or spas. Reference the Standard for Electric Spas, Equipment As

38、semblies, and Associated Equipment, UL 1563. f) Factory wired assemblies intended for the control of Architectural and Floating Fountains. Reference the Standards for Motor-Operated Water Pumps, UL 778, Underwater Luminaires and Submersible Junction Boxes, UL 676 and Industrial Control Panels, UL 50

39、8A. g) Portable power distribution equipment. Reference the Standard for Portable Power- Distribution Equipment, UL 1640. h) Panelboards with converter and/or inverter functions, intended for use as distribution equipment in recreational vehicles. Reference the Standard for Power Converters/Inverter

40、s and Power Converter/Inverter Systems for Land Vehicles and Marine Crafts, UL 458. MAY 15, 2018 PANELBOARDS - UL 67 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 2 Components 2.1 Except as indicated in 2.2, a component of a product cover

41、ed by this standard shall comply with the requirements for that component. See Appendix A for a list of standards covering components generally used in the products covered by this standard. 2.2 A component is not required to comply with a specic requirement that: a) Involves a feature or characteri

42、stic not required in the application of the component in the product covered by this standard, or b) Is superseded by a requirement in this standard. 2.3 A component shall be used in accordance with its rating established for the intended conditions of use. 2.4 Specic components are incomplete in co

43、nstruction features or restricted in performance capabilities. Such components are intended for use only under limited conditions, such as certain temperatures not exceeding specied limits, and shall be used only under those specic conditions. 2.5 A component not marked with a short-circuit current

44、rating is considered rated for use in a circuit having a maximum available fault current as shown in Table 2.1. Table 2.1 Assumed maximum short-circuit current rating for unmarked components Components Short circuit current rating, kA 1. Circuit Breaker (Including GFCI Type) 5 2. Clock-Operated Swit

45、ch 5 3. Fuseholder 10 4. Plug Fuse 10 5. Industrial Control Equipment: a. Auxiliary Devices 5 b. Switches 5 6. Meter Socket Base 10 7. Motor Controller, rated in horsepower (kW) a. 1.5 50 (1.1 37.3) 5 b. 51 200 (38 149) 10 c. 201 400 (150 298) 18 d. 401 600 (299 447) 30 e. 601 900 (448 671) 42 f. 90

46、1 1600 (672 1193) 85 8. Photoelectric Switches 5 9. Receptacle (GFCI Type) 2 a 10. Receptacle (other than GFCI Type) 10 11. Snap Switch 5 12. Terminal Block 10 13. Thermostat 5 14. Direct Connected Meters b a The short-circuit current available in a 120 volt secondary circuit of a transformer rated

47、5 kilovolt-amperes or less is considered to be 2 kiloamperes or less. MAY 15, 2018 PANELBOARDS - UL 67 9 Table 2.1 Continued on Next PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Table 2.1 Continued Components Short circuit current rat

48、ing, kA b See 2.7. 2.6 The short-circuit current available in the secondary circuit of a transformer rated 10 kilovolt-amperes or less is considered to be 5000 amperes or less. 2.7 For other than a plug-in meter, a current-sensing meter in a panelboard shall be a type that has been subjected to a 60

49、 hertz rms short-circuit current of 12,000 amperes for four electrical cycles, and a peak current of 30,000 amperes for one-half electrical cycle, and shall be provided with overcurrent protection as described in 25.8.5.2. A plug-in meter such as a watt-hour meter to be plugged into a meter socket base is not considered to be a part of the panelboard. Exception No. 1: A meter need not have been tested nor provided with overcurrent protection if it is intended for use with a c