UL 962A-2014 UL Standard for Safety Furniture Power Distribution Units (Third Edition Reprint with revisions through and including September 8 2015)《家具配电单元的UL安全标准 (第三版)》.pdf

1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 962A Furniture Power Distribution UnitsUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FU

2、RTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Furniture Power Distribution Units, UL 962A Third Edition, Dated September 29, 2014 Summary of Topics The Third Edition of the Standard for Safety for Furniture Power Distribution Units, UL 962A, has been issued

3、 to incorporate the proposals dated June 13, 2014 and August 11, 2014, which include the following: Requirements for FPDUs with moveable parts. UL 962A scope changes. The new and revised requirements are substantially in accordance with Proposal(s) on this subject dated June 13, 2014 and August 11,

4、2014. All rights reserved. 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,

5、either expressed or 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 dama

6、ges 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 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. Use

7、rs of the electronic 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 el

8、ectronic Standard on the purchasers computer system. The requirements in this Standard are now in effect, except for those paragraphs, sections, tables, gures, and/or other elements of the Standard having future effective dates as indicated in the note following the affected item. The prior text for

9、 requirements that have been revised and that have a future effective date are located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. SEPTEMBER 29, 2014 UL 962A tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL SE

10、PTEMBER 29, 2014 UL 962A tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL September 29, 2014 1 UL 962A Standard for Furniture Power Distribution Units First Edition September, 2003 Second Edition December, 2008 Third E

11、dition September 29, 2014 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 System (CSDS) at http:/. ULs Standards for Safety are copyrighted by U

12、L. 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. COPYRIGHT 2014 UNDERWRITERS LABORATORIES INC.UL COPYRIGHTED MATERIAL NOT

13、AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL SEPTEMBER 29, 2014 FURNITURE POWER DISTRIBUTION UNITS - UL 962A 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scop

14、e .5 2 General 5 2.1 Components .5 2.2 Use.6 3 Units of Measurement .6 4 Undated References 6 5 Glossary .6 CONSTRUCTION 6 Enclosure 7 6.1 General .7 6.2 Metallic 9 6.3 Nonmetallic 9 7 Mechanical Assembly 10 8 Accessibility of Live Parts .11 9 Mounting Means .13 10 Corrosion Protection 13 11 Insulat

15、ing Materials .13 12 Power-Supply Cord .14 12.1 General .14 12.2 Bushings 15 12.3 Strain Relief .15 12.4 Push Back Relief .16 13 Receptacles 16 14 Supplementary Protection 17 15 Switches .18 16 Live Parts 19 17 Internal Wiring 19 18 Spacings 20 19 Printed-Wiring Boards .21 20 Separation of Circuits

16、.21 21 Grounding .21 21.1 General .21 21.2 Bonding .23 PERFORMANCE 22 General 24 23 Motorized or Self-Propelled Movable Parts .24 24 Temperature Test .25 25 Dielectric Voltage-Withstand Test .27 26 Leakage Current Test .28 26.1 General .28 26.2 Leakage current after humidity conditioning 31 27 Groun

17、ding Continuity Test .31 28 Fault Current Test 32 28.1 General .32 SEPTEMBER 29, 2014 FURNITURE POWER DISTRIBUTION UNITS - UL 962A 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 28.2 Calibration of test circuits 32 29 Overcurrent Test 33 3

18、0 Mounting Hole Barrier Tests .34 30.1 General .34 30.2 Mounting hole barrier impact test .35 30.3 Mounting hole barrier probe test .35 31 Strain Relief Test .36 32 Push Back Relief Test .37 33 Impact Tests .37 33.1 General .37 33.2 Drop impact test .38 33.3 Steel sphere impact test 39 33.4 Low-temp

19、erature steel sphere impact test .42 34 Crushing Test 42 35 Adequacy of Mounting Test 43 36 Mold Stress-Relief Distortion Test .44 37 Spill Test 45 38 Accessibility Tests 45 38.1 Enclosure accessibility test 45 38.2 Accessibility of live parts test 46 39 Test for Permanence of Cord Tag 48 39.1 Gener

20、al .48 39.2 Test conditions .48 39.3 Test method .49 40 Pinch Force Evaluation Test .50 41 Normal Operation Test 50 MANUFACTURING AND PRODUCTION-LINE TESTS 42 Dielectric Voltage-Withstand Test .51 43 Grounding Continuity Test .53 44 Cycling Test 53 45 Flexing Endurance Test .54 RATINGS 46 Details .5

21、5 MARKINGS 47 Details .55 APPENDIX A Standards for ComponentsA1 SEPTEMBER 29, 2014 FURNITURE POWER DISTRIBUTION UNITS - UL 962A 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover indoor use cor

22、d and plug connected furniture power distribution units (FPDU) rated 250 V AC or less and 20 Amperes or less. FPDUs are for xed mounting to furnishings as a power supply connection for cord and plug connected electrical utilization equipment in accordance with the National Electric Code, NFPA 70. 1.

23、2 A cord and plug connected product as described in 1.1 with less than three receptacle outlets that employs an electromagnetic interference lter is covered under the Standard for Electromagnetic Interference Filters, UL 1283. 1.3 A cord and plug connected product as described in 1.1 with less than

24、three receptacle outlets that employs a surge protective device (SPD) is covered under the Standard for Surge Protective Devices, UL 1449. 1.4 A cord and plug connected product as described in 1.1 that employs ground-fault protection is covered under the requirements for portable GFCIs in the Standa

25、rd for Ground-Fault Circuit Interrupters, UL 943. 1.5 This standard does not cover FPDUs intended for use with medical equipment. 2 General 2.1 Components 2.1.1 Except as indicated in 2.1.2, a component of products covered by this standard shall comply with the requirements for that component. See A

26、ppendix A for a 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 covered by this sta

27、ndard, or b) Is superseded by a requirement in this standard. 2.1.3 A component 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 i

28、ntended for use only under limited conditions, such as certain temperatures not exceeding specied limits, and shall be used only under those specic conditions. SEPTEMBER 29, 2014 FURNITURE POWER DISTRIBUTION UNITS - UL 962A 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBU

29、TION WITHOUT PERMISSION FROM UL 2.2 Use 2.2.1 A FPDU is intended to be connected to a permanently installed branch circuit receptacle outlet. 2.2.2 A FPDU is intended to be mounted to an indoor use furnishing. 2.2.3 FPDU are not intended to be series connected (daisy chained) to other FPDUs to reloc

30、atable power taps or to extension cords. 3 Units of Measurement 3.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory or approximate information. 3.2 Unless otherwise indicated, all voltage and current values mentioned in this standard are root-mean-square

31、(rms). 4 Undated References 4.1 Any undated reference to a code or standard appearing in the requirements of this standard shall be interpreted as referring to the latest edition of that code or standard. 5 Glossary 5.1 For the purpose of this standard the following denitions apply. 5.2 ATTACHMENT P

32、LUG A male contact device for the temporary connection of a exible cord or cable to a receptacle outlet or cord connector. 5.3 CORD CONNECTOR A female contact device assembled or molded on exible cord to allow a detachable electrical connection to an attachment plug. 5.4 FIXED FURNISHING Intended to

33、 be permanently connected electrically to a source of supply. 5.5 FURNITURE POWER DISTRIBUTION UNIT (FPDU) An electrical enclosure provided with an attached power supply cord and attachment plug for connection to a permanently installed branch circuit receptacle outlet. The FPDU is provided with a m

34、ounting means for attachment to a furnishing. The electrical enclosure may be provided with one or more receptacle outlets. The FPDU may also be provided in any combination of the following congurations: a) The electrical enclosure connected to the power supply cord and attachment plug may be suppli

35、ed with up to six lengths of exible cord not exceeding 6 feet in length; each length shall be terminated with a maximum of 3 receptacle outlets within an electrical enclosure or 3 cord connectors. Refer to Clause 13.6 limiting the total number of outlets, Table 12.1 for overload requirements and 12.

36、1.8 for interconnecting cord requirements. b) Provided with supplementary overcurrent protection. c) Provided with manual or automatic switch(es) such as an integral appliance timer to control all or some of the receptacle outlets. d) Provided with indicator lights. SEPTEMBER 29, 2014 FURNITURE POWE

37、R DISTRIBUTION UNITS - UL 962A 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL e) When provided with three or more receptacle outlets the FPDU may be provided with a surge protective device (SPD) or an electromagnetic interference (EMI) lte

38、r. f) A FPDU may employ non-electrical decorative features. The decorative features may include various shapes such as rocks, birds and animals, etc. g) A FPDU may employ telephone equipment and communication circuit protectors. h) A FPDU may employ an antenna discharge unit or provide antenna conne

39、ctions for televisions and video products. 5.6 PORTABLE FURNISHING Meets all of the following: a) Not secured to the building structure unless provided with a securement means that allows the furnishing to be removed without the use of tools, and b) Connected electrically to an electrical source of

40、supply with a power supply cord and plug. 5.7 RECEPTACLE OUTLET A female contact device mounted within an electrical enclosure to allow a detachable electrical connection of an attachment plug. 5.8 STATIONARY FURNISHING a) Intended to be fastened in place requiring tools for removal and connected el

41、ectrically to an electrical source of supply with a power supply cord and plug; or b) Unlikely to be frequently relocated due to size, weight or conguration and connected electrically to an electrical source of supply with a power supply cord and plug. 5.9 SUPPLEMENTARY PROTECTOR A manually resettab

42、le device designed to open the circuit automatically on a predetermined value of time versus current or voltage within an appliance or other electrical equipment. It is permitted to be provided with a manual means for opening or closing the circuit. CONSTRUCTION 6 Enclosure 6.1 General 6.1.1 The enc

43、losure shall be formed and assembled so that it has the strength and rigidity required to resist the abuses to which it is subjected, without resulting in a risk of re, electric shock, or injury to persons, due to total or partial collapse with resulting reduction of spacings, loosening or displacem

44、ent of parts or other serious defects. 6.1.2 An opening in an enclosure shall have such size and shape - or shall be so covered by screening or barrier or by an expanded, perforated, or louvered panel - that a test rod having a maximum diameter of 1/16 in (1.6 mm) shall be prevented from contacting

45、live parts. See Accessibility Test, Section 38. SEPTEMBER 29, 2014 FURNITURE POWER DISTRIBUTION UNITS - UL 962A 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 6.1.3 A keyhole slot, notch, or similar means for mounting, when provided, shall

46、 be located so that the supporting screws or the like cannot damage any electrical insulation or reduce spacings to live parts. 6.1.4 A barrier that covers a mounting hole and thereby forms part of the required enclosure shall be subjected to the Mounting Hole Barrier Tests, Section 30. 6.1.5 If a F

47、PDU employs a decorative or ancillary feature, such as a rock, bird or animal, or a storage compartment, it shall be designed so that the addition of the decorative feature part(s) does not: a) Interfere with the function or mounting means described in Section 9; b) Interfere with turning the power

48、on or off using the switch provided on the FPDU; or c) Interfere with an attachment plug from fully seating in the receptacle outlet slot(s) of the FPDU. 6.1.6 A FPDU that incorporates devices such as an integral appliance timer to control all or some of the receptacles shall comply with the Standar

49、d for Clock-Operated Switches, UL 917 or the Standard for Solid-State Controls for Appliances, UL 244A. Compliance with the Standard for Automatic Electrical Controls for Household and Similar Use, Part 1: General Requirements, UL 60730-1, and/or the applicable Part 2 standard from the UL 60730 series fullls the UL 244A requirements. 6.1.7 Products that employ timer(s) as specied in 5.3 shall be marked as specied in 47.21 to warn the user of the possible hazards. 6.1.8 Telephone equipment