1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUL 2111ISBN 0-7629-0166-7Overheating Protection forMotorsUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHO
2、RIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULUnderwriters Laboratories Inc. (UL)333 Pfingsten RoadNorthbrook, IL 60062-2096UL Standard for Safety for Overheating Protection for Motors, UL 2111First Edition, Dated March 28, 1997Revisions: This Standard contains revisions th
3、rough and including January 27, 2006.Summary of TopicsThese editorial revisions to ANSI/UL 2111 replace all references to UL 1020, the Standard forThermal Cutoffs for Use in Electrical Appliances and Components, with reference to UL 60691,the Standard for Thermal-Links Requirements and Application G
4、uide. UL 1020 was withdrawnand superseded by UL 60691.UL Standards for Safety are developed and maintained in the Standard Generalized Markup Language(SGML). SGML - an international standard (ISO 8879-1986) - is a descriptive markup language thatdescribes a documents structure and purpose, rather th
5、an its physical appearance on a page. Due toformatting differences resulting from the use of ULs new electronic publishing system, please note thatadditional pages (on which no requirements have been changed) may be included in revision pages dueto relocation of existing text and reformatting of the
6、 Standard.Text that has been changed in any manner is marked with a vertical line in the margin. Changes inrequirements are marked with a vertical line in the margin and are followed by an effective date noteindicating the date of publication or the date on which the changed requirement becomes effe
7、ctive.The revisions dated January 27, 2006 include a reprinted title page (page1) for this Standard.The revisions dated January 27, 2006 editorially replace all references to UL 1020 with the reference toUL 60691.As indicated on the title page (page 1), this UL Standard for Safety is an American Nat
8、ional Standard.Attention is directed to the note on the title page of this Standard outlining the procedures to be followedto retain the approved text of this ANSI/UL Standard.The UL Foreword is no longer located within the UL Standard. For information concerning the use andapplication of the requir
9、ements contained in this Standard, the current version of the UL Foreword islocated on ULStandardsInfoNet at: http:/ master for this Standard at ULs Northbrook Office is the official document insofar as it relates to aUL service and the compliance of a product with respect to the requirements for th
10、at product and service,or if there are questions regarding the accuracy of this Standard.ULs Standards for Safety are copyrighted by UL. Neither a printed copy of a Standard, nor the distributiondiskette for a Standard-on-Diskette and the file for the Standard on the distribution diskette should bea
11、ltered in any way. All of ULs Standards and all copyrights, ownerships, and rights regarding thoseStandards 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, ortransmitted in any form by any means, ele
12、ctronic, mechanical photocopying, recording, or otherwisewithout prior permission of UL.JANUARY 27, 2006 UL 2111 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULRevisions of UL Standards for Safety are issued from time to time. A UL Standar
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21、zed.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 eachsingle-user version of an electronic Standard. Only one copy of the Standard may be printed for each
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23、d.An employee of an organization purchasing a UL Standard can make a copy of the page or pages beingviewed 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 Standar
24、d having future effective dates as indicated in the note following theaffected item. The prior text for requirements that have been revised and that have a future effective dateare located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice.New product submittals made prior to a
25、 specified future effective date will be judged under all of therequirements in this Standard including those requirements with a specified future effective date, unlessthe applicant specifically requests that the product be judged under the current requirements. However, ifJANUARY 27, 2006 UL 2111t
26、r2UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULthe applicant elects this option, it should be noted that compliance with all the requirements in thisStandard will be required as a condition of continued Recognition and Follow-Up Services af
27、ter theeffective date, and understanding of this should be signified in writing.Copyright 2006 Underwriters Laboratories Inc.This Standard consists of pages dated as shown in the following checklist:Page Date1-2A .January 27, 20062B-3.March 28, 20014-5 January 27, 20066-10 .March 28, 200111.March 14
28、, 200212-12H March 28, 200113.March 28, 199714-24F.March 28, 200124G-24H .January 27, 200624I-28 .March 28, 2001A1.January 27, 2006A2 March 28, 2001SR1-SR2 March 28, 2001JANUARY 27, 2006 UL 2111 tr3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM
29、 ULJANUARY 27, 2006 UL 2111tr4No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULMARCH 28, 1997(Title Page Reprinted: January 27, 2006)1UL 2111Standard for Overheating Protection for MotorsPrior to the first edition, the requi
30、rements for the products covered by thisStandard were included in the Standard for Impedance-Protected Motors, UL519, and the Standard for Thermal Protectors for Motors, UL 547.First EditionMarch 28, 1997The most recent designation of ANSI/UL 2111 as an American National Standardoccurred on January
31、28, 2002.This ANSI/UL Standard for Safety, which consists of the First Edition withrevisions through January 27, 2006, is under continuous maintenance, wherebyeach revision is ANSI approved upon publication. Comments or proposals forrevisions on any part of the Standard may be submitted to UL at any
32、 time.Proposals should be submitted via a Proposal Request in ULs On-LineCollaborative Standards Development System (CSDS) at http:/.An effective date included as a note immediately following certain requirementsis one established by Underwriters Laboratories Inc.Revisions of this Standard will be m
33、ade by issuing revised or additional pagesbearing their date of issue. A UL Standard is current only if it incorporates themost recently adopted revisions, all of which are itemized on the transmittal noticethat accompanies the latest set of revised requirements.ISBN 0-7629-0166-7COPYRIGHT 1997, 200
34、6 UNDERWRITERS LABORATORIES INC.ANSI/UL 2111-2002UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULJANUARY 27, 2006OVERHEATING PROTECTION FOR MOTORS - UL 21112No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR
35、DISTRIBUTION WITHOUT PERMISSION FROM ULCONTENTSINTRODUCTION1 Scope .52 Units of Measurement .63 Glossary .63A Components 84 Application of Requirements 9PART I ALL MOTORS5 General 95A Dielectric Voltage-Withstand Test .12PART II IMPEDANCE-PROTECTED MOTORSCONSTRUCTION6 General .12BPERFORMANCE7 Locked
36、-Rotor Temperature Test 12B8 Dielectric Voltage Withstand Test .12D9 Locked-Rotor Endurance Test .12DMARKINGS9A Details .12EPART III THERMAL-DEVICE-PROTECTED MOTORSCONSTRUCTION10 General 12F11 Spacings .12G11A Solid-State Circuitry-Protected Motors 1411A.2 Limiting impedance circuit requirements .14
37、11A.3 Clearances and creepage distances .15PERFORMANCE12 General 1612A Solid-State Circuitry-Protected Motors Tests 1812A.1 Normal temperature test .1812A.2 Component breakdown test 20JANUARY 27, 2006 OVERHEATING PROTECTION FOR MOTORS - UL 2111 2AUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER RE
38、PRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL12A.3 Abnormal tests .2213 Running Heating Temperature Test .2313.1 Continuous duty motors .2313.2 Intermittent duty motors .2413.3 Fan duty motors 24B14 Locked-Rotor Temperature Test .24B14.1 General 24B14.2 Automatically reset protectors 24C14.3
39、Manually reset protectors 24D14.4 Thermal cutoffs .24D14.5 Single-operation devices .24D15 Dielectric Voltage-Withstand Test .24D16 Locked-Rotor Endurance Test 24E16.1 General 24E16.2 Automatically reset protectors 24E16.3 Manually reset protectors 24FMARKINGS16A Details 24FPART IV THERMAL PROTECTOR
40、SCONSTRUCTION17 General 24GPERFORMANCE18 Limited Short Circuit Test 24H19 Protector Insulation Test .25MARKINGS19A Details .27PART V MOTOR MANUFACTURING AND PRODUCTION LINE TESTS20 Dielectric Voltage-Withstand Test .28PART VI MARKINGS21 Impedance-Protected Motors (Part I) 2822 Thermal-Device-Protect
41、ed Motors (Part II) .2823 Thermal Protectors (Part III) 28APPENDIX AStandards for ComponentsA1MARCH 28, 2001OVERHEATING PROTECTION FOR MOTORS - UL 21112BUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULMARCH 28, 2001 OVERHEATING PROTECTION FOR
42、MOTORS - UL 2111 3No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULThis page intentionally left blank.JANUARY 27, 2006OVERHEATING PROTECTION FOR MOTORS - UL 21114UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTIO
43、N ORDISTRIBUTION WITHOUT PERMISSION FROM ULINTRODUCTION1 Scope1.1 The requirements in this standard cover:a) Impedance-protected motors;b) Thermal-device-protected motors;c) Thermal-protective devices; andd) Motors with solid state thermal protection circuitry.1.1 revised March 28, 20011.2 The requi
44、rements in this standard apply only to motors rated 600 V or less.1.3 The requirements in this standard do not cover:a) A manual device for opening the circuit;b) A motor intended for use in a hazardous location;c) Motors employing a device that serves as a motor protector and a manual motor control
45、ler;d) Motors employing a motor protector with contacts that control a relay coil in a motor starter;e) Motors protected by devices responsive to current only;f) Sealed (hermetic) type motor compressors;g) Impedance-protected motors employing an automatic-starting switch; orh) Thermal cutoff devices
46、. Thermal cutoffs are covered by the Standard for Thermal-Links Requirements and Application Guide, UL 60691.1.3 revised January 27, 20061.4 The requirements in this standard are intended to evaluate a specific motor, protector, andmotor/protector combination. When either the motor, the protector, o
47、r the motor/protector combination ischanged, a separate evaluation is required.1.4 revised March 28, 20011.5 A product that contains features, characteristics, components, materials, or systems new or differentfrom those covered by the requirements in this standard, and that involves a risk of fire
48、or of electric shockor injury to persons shall be evaluated using appropriate additional component and end-productrequirements to maintain the level of safety as originally anticipated by the intent of this standard. Aproduct whose features, characteristics, components, materials, or systems conflic
49、t with specificrequirements or provisions of this standard does not comply with this standard. Revision of requirementsshall be proposed and adopted in conformance with the methods employed for development, revision, andimplementation of this standard.1.5 revised March 28, 2001JANUARY 27, 2006 OVERHEATING PROTECTION FOR MOTORS - UL 2111 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL2 Units of Measurement2.1 Values stated
