UL 2738-2011 UL Standard for Safety Induction Power Transmitters and Receivers for use with Low Energy Products (First Edition Reprint with Revisions Through and Including October .pdf

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1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 2738 Induction Power Transmitters and Receivers for use with Low Energy ProductsUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL C

2、OPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Induction Power Transmitters and Receivers for use with Low Energy Products, UL 2738 First Edition, Dated April 28, 2011 Summary of Topics This revision of ANSI/UL 2738 i

3、ncludes the following change in requirements: Addition of UL 62368-1 as a permitted base standard Text that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. Changes in requirements are marked with a vertical line in the marg

4、in and are followed by an effective date note indicating the date of publication or the date on which the changed requirement becomes effective. The revised requirements are substantially in accordance with Proposal(s) on this subject dated August 9, 2013. All rights reserved. No part of this public

5、ation 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 implied, including but not li

6、mited 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 the use of or the inability to

7、 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 versions of ULs Standards fo

8、r 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 the purchasers computer syst

9、em. 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 requirements that have been revised and that hav

10、e a future effective date are located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. OCTOBER 1, 2013 UL 2738 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL OCTOBER 1, 2013 UL 2738 tr2 No Text on This PageUL COP

11、YRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL April 28, 2011 (Title Page Reprinted: October 1, 2013) 1 UL 2738 Standard for Induction Power Transmitters and Receivers for use with Low Energy Products First Edition April 28, 2011 This ANSI/UL Sta

12、ndard for Safety consists of the First Edition including revisions through October 1, 2013. The most recent designation of ANSI/UL 2738 as an American National Standard (ANSI) occurred on September 30, 2013. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page,

13、 or effective date information. 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 copyrighte

14、d 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. COPYRIGHT 2013 UNDERWRITERS LABORATORIES INC. ANSI/UL 2738-2013UL C

15、OPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL APRIL 28, 2011 UL 2738 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .4 2 Components

16、 5 3 Units of Measurement .5 4 Undated References 5 5 Glossary .5 CONSTRUCTION 6 General 6 PERFORMANCE 7 General 7 8 Induction Power Transmitter Maximum Power Transfer Test Normal Operation .7 9 Induction Power Transmitter Maximum Power Transfer Test Component Fault Test .7 10 Induction Receiver Lim

17、ited Power and Current Test 8 APRIL 28, 2011 UL 2738 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements apply to: a) Induction power transmitters intended to be supplied by an internal or external po

18、wer source, which is powered by a branch circuit of 600 volts or less; and b) Induction receivers intended for use with induction power transmitters. 1.2 With regard to 1.1(b), the output from an induction receiver assembly does not exceed: a) 60 V dc or 42.4 V ac peak; and b) 100 VA capacity. Excep

19、tion: Greater voltage or VA limits are permitted when the combination receiver and supplied equipment comply with the applicable end-product requirements. 1.3 An induction power transmitter employs a magnetic induction coil(s) transmitting energy to a receiving coil in a device placed near the power

20、 platform. 1.4 An induction receiver is a device intended for powering a low energy product. The receiver may be an incomplete device intended for installation in or on the low energy product, or the receiver may be a complete device intended for connection to a low energy product. 1.5 An “induction

21、 battery charger” is an example of induction power transmitting and receiving equipment covered by these requirements. Examples of low energy products powered by the induction transmitter and receiver include cell phones, personal data assistants, portable media players, global positioning devices,

22、and similar small battery powered portable devices. 1.6 These requirements do not apply to a product powered by an induction receiver. Requirements for the powered product are specied in the appropriate end-product Standard which may be supplemented by these requirements. 1.7 These requirements do n

23、ot apply to a product with an integral induction receiver. Requirements for such products are specied in the appropriate end-product Standard which may be supplemented by these requirements. 1.8 These requirements do not address physiological effects, or electromagnetic compatibility with other equi

24、pment and power systems. APRIL 28, 2011 UL 2738 4UL 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 covered by this Standard shall comply with the requirements for that compo

25、nent. 2.2 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 Standard; or b) Is superseded by a requirement in this Standard. 2.3 A component shall be used in ac

26、cordance with its rating established for the intended conditions of use. 2.4 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 not exceeding specied lim

27、its, and shall be used only under those specic conditions. 3 Units of Measurement 3.1 Values stated without parentheses are the requirement. Values in parentheses are explanatory or approximate information. 4 Undated References 4.1 Any undated reference to a code or standard appearing in the require

28、ments 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 INDUCTION POWER TRANSMITTER The equipment consisting of the supply connections, control circuitry, induction tr

29、ansmitting coils, power platform, and overall enclosure. 5.3 INDUCTION RECEIVER The equipment consisting of control circuitry, induction receiving coil, electrical output connections and enclosure. An induction receiver may be a complete assembly with output plug for connection to a low energy produ

30、ct, or it may be an assembly for installation in or on a low energy product. For a product with an integral induction receiver, see 1.7. 5.4 LOW ENERGY PRODUCT For the purposes of these requirements, a product intended to receive no more than 100 VA from the induction receiver under normal operation

31、. 5.5 POWER PLATFORM The part or surface of the induction power transmitter housing the inductive transmitting coil. 5.6 RF CONVERSION CIRCUIT For a transmitter coil, the circuit interface between the input supply (e.g. 60 Hz, DC, etc.) and the RF coil. For a receiver coil, the circuit interface bet

32、ween the RF coil and the induction receiver output. APRIL 28, 2011 UL 2738 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONSTRUCTION 6 General 6.1 In addition to these requirements, an induction power transmitter shall comply with the co

33、nstruction, performance, production, marking, and instruction requirements of one of the following: a) The Standard for Class 2 Power Units, UL 1310; b) The Standard for Power Units other than Class 2, UL 1012; c) The Standard for Information Technology Equipment Safety - Part 1: General Requirement

34、s, UL 60950-1; d) The Standard for Audio, Video, and Similar Electronic Apparatus-Safety Requirements, UL 60065; e) The Standard for Household and Commercial Furnishings, UL 962; f) The Standard for Office Furnishings, UL 1286; g) The Standard for Household and Similar Electrical Appliances, Part 1:

35、 General Requirements, UL 60335-1; or h) The Standard for Safety for Audio/Video, Information and Communication Technology Equipment Part 1: Safety Requirements, UL 62368-1. 6.1 revised October 1, 2013 6.2 In addition to these requirements, an induction receiver shall comply with the construction, p

36、erformance, production, marking, and instruction requirements of one of the following: a) The Standard for Class 2 Power Units, UL 1310; b) The Standard for Power Units other than Class 2, UL 1012; c) The Standard for Information Technology Equipment Safety - Part 1: General Requirements, UL 60950-1

37、; d) The Standard for Audio, Video, and Similar Electronic Apparatus-Safety Requirements, UL 60065; e) The Standard for Household and Similar Electrical Appliances, Part 1: General Requirements, UL 60335-1; or f) The Standard for Safety for Audio/Video, Information and Communication Technology Equip

38、ment Part 1: Safety Requirements, UL 62368-1. 6.2 revised October 1, 2013 OCTOBER 1, 2013 UL 2738 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL PERFORMANCE 7 General 7.1 When performing tests at rated load conditions in accordance with a

39、Standard specied in 6.1, the power platform is to be loaded to the maximum power transfer that may occur under normal conditions. A power platform capable of supplying multiple induction receivers is to be, under normal conditions, loaded to result in the maximum input power to the induction power t

40、ransmitter. 8 Induction Power Transmitter Maximum Power Transfer Test Normal Operation 8.1 The maximum power input to any single transmitting coil RF conversion circuit shall not exceed 240 VA when the power platform is supplied by the voltage used during the normal temperature test in accordance wi

41、th a Standard specied in 6.1. Exception: Greater VA limit is permitted when the combination transmitter, receiver, and supplied equipment comply with the applicable end-product requirements. 8.2 In order to determine compliance with 8.1, an adjustable simulated load is to be used which incorporates

42、an induction receiver appropriate to the power platform. The simulated load shall be capable of providing a load demand to the transmitting coil greater than the maximum input specied in 8.1. The input power to the transmitting coil is to be monitored while the simulated load is adjusted to result i

43、n the maximum power to the transmitting coil. 9 Induction Power Transmitter Maximum Power Transfer Test Component Fault Test 9.1 The maximum power input to any single transmitting coil RF conversion circuit, with a single component fault of short or open circuit within the induction power transmitte

44、r, shall not exceed 240 VA when the power platform is supplied by the voltage used during the normal temperature test in accordance with a Standard specied in 6.1. Exception: Greater VA limit is permitted when the combination transmitter, receiver, and supplied equipment comply with the applicable e

45、nd-product requirements. 9.2 In order to determine compliance with 9.1, an adjustable simulated load is to be used which incorporates an induction receiver appropriate to the power platform. The simulated load shall be capable of providing a load demand to the transmitting coil greater than the maxi

46、mum input specied in 9.1. The selected component fault within the induction power transmitter is to be introduced and the input power to the transmitting coil is to be monitored while the simulated load is adjusted to result in the maximum power to the transmitting coil. APRIL 28, 2011 UL 2738 7UL C

47、OPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 10 Induction Receiver Limited Power and Current Test 10.1 When supplied from an induction power transmitter coil assembly appropriate to the induction receiver (see also 10.2), the output voltage,

48、current, and power under normal and single component fault conditions within the receiver circuitry shall comply with: a) The Standard for Class 2 Power Units, UL 1310; b) The Standard for Information Technology Equipment Safety - Part 1: General Requirements, UL 60950-1, limited power source requir

49、ements; or c) The Standard for Safety for Audio/Video, Information and Communication Technology Equipment Part 1: Safety Requirements, UL 62368-1. Exception: Greater limits are permitted when the combination receiver and supplied equipment comply with the applicable end-product requirements. 10.1 revised October 1, 2013 10.2 For the purposes of the test requirement in 10.1, the induction power transmitter shall have sufficient capacity such that any energy limiting is integral to the induction receiv