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UL1741逆变器标准
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这是保险商实验室的逆变器标准,有对逆变器的各项性能很好的检测标准,很权威的!
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UL 1741
ISBN 0-7629-0421-6
Inverters, Converters, and
Controllers for Use in
Independent Power Systems
Underwriters Laboratories Inc. (UL)
333 Pfingsten Road
Northbrook, IL 60062-2096
UL Standard for Safety for Inverters, Converters, and Controllers for Use in Independent Power Systems,
UL 1741
First Edition, Dated May 7, 1999
Revisions: This Standard contains revisions through and including January 17, 2001.
The revisions dated January 17, 2001 include a revised title. The previous title, Static Inverters and
Charge Controllers for Use in Photovoltaic Power Systems, has been revised to Inverters, Converters, and
Controllers for Use in Independent Power Systems.
Announcement Bulletin(s): This Standard contains the announcement bulletin(s) dated May 7, 1999. The
announcement bulletin is located at the end of the Standard.
Text that has been changed in any manner is marked with a vertical line in the margin. Changes in
requirements are marked with a vertical line in the margin and are followed by an effective date note
indicating the date of publication or the date on which the changed requirement becomes effective.
UL is in the process of converting its Standards for Safety to the Standard Generalized Markup Language
(SGML), and implementing an SGML compliant document management and publishing system. SGML -
an international standard (ISO 8879-1986) - is a descriptive markup language that describes a document’s
structure and purpose, rather than its physical appearance on a page. Significant benefits that will result
from UL’s use of SGML and these new systems include increased productivity, reduced turnaround times,
and data and information consistency, reusability, shareability, and portability. However, the fonts,
pagination, and general formatting of UL’s new electronic publishing system differ from that of UL’s
previous publishing system. Consequently, when revision pages are issued for a Standard with the new
publishing system, these differences may result in the printing of pages on which no requirements have
been changed - these additional pages result from relocation of text due to repagination and reformatting
of the Standard with the new publishing system.
The new requirements are substantially in accordance with UL’s Bulletin(s) on this subject dated April 3,
2000 and July 31, 2000. The bulletin(s) is now obsolete and may be discarded.
The master for this Standard at UL’s Northbrook Office is the official document insofar as it relates to a
UL service and the compliance of a product with respect to the requirements for that product and service,
or if there are questions regarding the accuracy of this Standard.
UL’s Standards for Safety are copyrighted by UL. Neither a printed copy of a Standard, nor the distribution
diskette for a Standard-on-Diskette and the file for the Standard on the distribution diskette should be
altered in any way. All of UL’s Standards and all copyrights, ownerships, and rights regarding those
Standards shall remain the sole and exclusive property of UL.
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.
Revisions of UL Standards for Safety are issued from time to time. A UL Standard for Safety is current
only if it incorporates the most recently adopted revisions.
JANUARY 17, 2001 − UL 1741 tr1
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 fitness for any purpose.
In no event will UL be liable for any special, incidental, consequential, indirect or similar damages,
including loss of profits, 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
possibility of such damage. In no event shall UL’s liability for any damage ever exceed the price paid for
this Standard, regardless of the form of the claim.
UL will attempt to answer support requests concerning electronic versions of its Standards. However, this
support service is offered on a reasonable efforts basis only, and UL may not be able to resolve every
support request. UL supports the electronic versions of its Standards only if they are used under the
conditions and operating systems for which it is intended. UL’s support policies may change from
time-to-time without notification.
UL reserves the right to change the format, presentation, file types and formats, delivery methods and
formats, and the like of both its printed and electronic Standards without prior notice.
Purchasers of the electronic versions of UL’s Standards for Safety agree to defend, indemnify, and hold
UL harmless from and against any loss, expense, liability, damage, claim, or judgement (including
reasonable attorney’s fees) resulting from any error or deviation introduced while purchaser is storing an
electronic Standard on the purchaser’s computer system.
If a single-user version electronic Standard was purchased, one copy of this Standard may be stored on
the hard disk of a single personal computer, or on a single LAN file-server or the permanent storage
device of a multiple-user computer in such a manner that this Standard may only be accessed by one user
at a time and for which there is no possibility of multiple concurrent access.
If a multiple-user version electronic Standard was purchased, one copy of the Standard may be stored on
a single LAN file-server, or on the permanent storage device of a multiple-user computer, or on an Intranet
server. The number of concurrent users shall not exceed the number of users authorized.
Electronic Standards are intended for on-line use, such as for viewing the requirements of a Standard,
conducting a word search, and the like. Only one copy of the Standard may be printed from each
single-user version of an electronic Standard. Only one copy of the Standard may be printed for each
authorized user of a multiple-user version of an electronic Standard. Because of differences in the
computer/software/printer setup used by UL and those of electronic Standards purchasers, the printed
copy obtained by a purchaser may not look exactly like the on-line screen view or the printed Standard.
An employee of an organization purchasing a UL Standard can make a copy of the page or pages being
viewed for their own fair and/or practical internal use.
The requirements in this Standard are now in effect, except for those paragraphs, sections, tables, figures,
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 have a future effective date
are located after the Standard, and are preceded by a ″SUPERSEDED REQUIREMENTS″ notice.
New product submittals made prior to a specified future effective date will be judged under all of the
requirements in this Standard including those requirements with a specified future effective date, unless
the applicant specifically requests that the product be judged under the current requirements. However, if
JANUARY 17, 2001 − UL 1741tr2
the applicant elects this option, it should be noted that compliance with all the requirements in this
Standard will be required as a condition of continued Listing and Follow-Up Services after the effective
date, and understanding of this should be signified in writing.
Copyright © 2001 Underwriters Laboratories Inc.
This Standard consists of pages dated as shown in the following checklist:
Page Date
1-18B ........................................................................January 17, 2001
19................................................................................May7,1999
20-24 ........................................................................January 17, 2001
25................................................................................May7,1999
26-30 ........................................................................January 17, 2001
31-32.............................................................................May7,1999
33...........................................................................January 17, 2001
34-35.............................................................................May7,1999
36...........................................................................January 17, 2001
37-38.............................................................................May7,1999
39-40B .......................................................................January 17, 2001
41-42.............................................................................May7,1999
43-44B .......................................................................January 17, 2001
45-46.............................................................................May7,1999
47-52 ........................................................................January 17, 2001
53................................................................................May7,1999
54-58B .......................................................................January 17, 2001
59-63.............................................................................May7,1999
64-66B .......................................................................January 17, 2001
67-72.............................................................................May7,1999
73-74B .......................................................................January 17, 2001
75................................................................................May7,1999
76-80B .......................................................................January 17, 2001
81................................................................................May7,1999
82-100D......................................................................January 17, 2001
101-102 ..........................................................................May7,1999
103-104B.....................................................................January 17, 2001
105-109 ..........................................................................May7,1999
110-132 ......................................................................January 17, 2001
133-134 ..........................................................................May7,1999
135-138 ......................................................................January 17, 2001
A1-A2........................................................................January 17, 2001
JANUARY 17, 2001 − UL 1741 tr3
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