1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 1446 Systems of Insulating Materials General STANDARD FOR SAFETYUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATER
2、IAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Systems of Insulating Materials General, UL 1446 Seventh Edition, Dated November 11, 2016 Summary of Topics Revision pages have been issued for UL 1446 to include the following changes i
3、n requirements and reect the latest approval date as an American National Standard: Additional clarication in 1.5 for other types of electrical insulation systems that operate above 1000 V. Correction of cross references in SA5.2.1. Revision of 5.1.1 to include reference to IEC 60505 to clarify the
4、electrical insulation systems thermal evaluation. Text that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. The new and revised requirements are substantially in accordance with Proposal(s) on this subject dated June 16, 20
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9、tronic Standard on the purchasers computer system. JULY 18, 2017 UL 1446 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JULY 18, 2017 UL 1446 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DIST
10、RIBUTION WITHOUT PERMISSION FROM UL NOVEMBER 11, 2016 (Title Page Reprinted: July 18, 2017) 1 UL 1446 Standard for Systems of Insulating Materials General First Edition June, 1978 Second Edition June, 1980 Third Edition January, 1991 Fourth Edition December, 1994 Fifth Edition May, 1997 Sixth Editio
11、n February, 2007 Seventh Edition November 11, 2016 This ANSI/UL Standard for Safety consists of the Seventh Edition including revisions through July 18, 2017. The most recent designation of ANSI/UL 1446 as an American National Standard (ANSI) occurred on July 18, 2017. ANSI approval for a standard d
12、oes not include the Cover Page, Transmittal Pages and Title Page. 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 https:/. ULs
13、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 shall remain the sole and exclusive property of UL. COPYRIGHT 2017 UNDERWRITERS LABO
14、RATORIES INC. ANSI/UL 1446-2016UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JULY 18, 2017 SYSTEMS OF INSULATING MATERIALS GENERAL - UL 1446 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUT
15、ION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .5 2 Units of Measurement .6 3 References .6 4 Glossary .7 PERFORMANCE CRITERIA 5 Insulation Systems .10 5.1 General 10 5.2 EIS components 11 PERFORMANCE TESTS 6 Electrical Insulation Systems Full Thermal Aging .12 6.1 General 12 6.2 Sampl
16、es .12 6.3 Exposures 14 6.4 Diagnostic tests determination of end of test-life .16 6.5 Analysis and evaluation 17 MARKING 7 Details 21 SUPPLEMENT SA - Substitutions or Modication to an Electrical Insulation System INTRODUCTION SA1 Scope SA1 SA2 General SA1 SA3 Non-Electrical Insulating Materials (NI
17、M) Components .SA1 SA4 Magnet Wire and Winding Wire .SA1 SA4.1 General SA1 SA4.2 Non-bondable magnet wire .SA2 SA4.3 Bondable magnet wire .SA3 SA4.4 Non-enamel coated conductors .SA4 SA4.5 Non-enamel insulated winding wire SA4 SA5 Varnish .SA4 SA5.1 Substitute varnish .SA4 SA5.2 Addition of varnishe
18、s to systems originally evaluated without a varnish SA6 SA6 Encapsulants, Ground, and Interwinding Insulation SA6 PERFORMANCE TESTS SA7 Insulation Systems - One Temperature Thermal Aging .SA8 JULY 18, 2017 SYSTEMS OF INSULATING MATERIALS GENERAL - UL 1446 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR
19、FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL SA7.1 General SA8 SA7.2 Samples, exposures, and tests .SA8 SA7.3 Analysis and evaluation SA9 SA8 Insulation Systems Two Temperature Thermal Aging .SA11 SA8.1 General .SA11 SA8.2 Samples, exposures, and tests SA11 SA8.3 Analysis and eval
20、uation .SA11 SA9 Sealed Tube Chemical Compatibility Test .SA13 SA9.1 General .SA13 SA9.2 Glossary SA13 SA9.3 Samples SA13 SA9.4 Conditioning .SA14 SA9.5 Interpretation of results of non-bondable wire SA15 SA9.6 Interpretation of results for bondable wire .SA15 SA10 Infrared Analysis Tests .SA16 SUPP
21、LEMENT SB - Magnet Wire and Magnet Wire Coatings INTRODUCTION SB1 Scope SB1 SB2 Magnet Wire Coatings SB1 SB3 Magnet Wire Evaluation SB2 PERFORMANCE TESTS SB4 Magnet Wire Coatings/Magnet Wires .SB3 SUPPLEMENT SC - Varnishes and Impregnating Resins INTRODUCTION SC1 Scope SC1 SC2 Varnishes SC1 SC3 Varn
22、ishes Thermal Aging .SC2 APPENDIX A Information for Magnet Wire Substitution NOVEMBER 11, 2016 SYSTEMS OF INSULATING MATERIALS GENERAL - UL 1446 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cov
23、er test procedures to be used in the evaluation of Class 120(E) or higher electrical insulation systems (EIS) where the thermal factor is the dominating aging factor. These requirements also cover the investigation of the substitution of non-electrical insulating materials (NIM) components of insula
24、tion in a previously evaluated insulation system and also the test procedures to be used in the evaluation of magnet wire coatings, magnet wires, and varnishes. 1.2 These requirements for the evaluation of an EIS do not establish thermal ratings for/or alter established thermal ratings for individua
25、l components. 1.3 These requirements do not cover insulation systems exposed to radiation or operating in oils, refrigerants, soaps, or other media that potentially degrade insulating materials. 1.4 When any performance aspect of an end-product requirement is not covered by this standard, the applic
26、able standard shall be used. 1.5 These requirements do not cover electrical insulation systems where transient overvoltages or partial discharge are present. Such electrical insulation systems shall be evaluated to the appropriate standard for the application. Such standards include, but are not lim
27、ited to the following: a) The Test Procedure for Thermal Evaluation of Insulation Systems for Dry-Type Power and Distribution Transformers, Including Open-Wound, Solid-Cast, and Resin-Encapsulated Transformers, IEEE C57.12.60; b) The Standard for Rotating Electrical Machines Part 18-31: Functional E
28、valuation of Insulation Systems Test Procedures for Form-Wound Windings Thermal Evaluation and Classication of Insulation Systems Used in Rotating Machines, IEC 60034-18-31; or c) The Recommended Practice for Thermal Evaluation of Unsealed or Sealed Insulation Systems for AC Electric Machinery Emplo
29、ying Form-Wound Pre-Insulated Stator Coils for Machines Rated 15 000 V and Below, IEEE 1776. JULY 18, 2017 SYSTEMS OF INSULATING MATERIALS GENERAL - UL 1446 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 2 Units of Measurement 2.1 Values s
30、tated without parentheses are the requirement. Values in parentheses are explanatory or approximate information. 3 References 3.1 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 standar
31、d. 3.2 IEC test methods are the preferred test methods with the ASTM methods presented as technically equivalent except where noted in Table 3.1. If a designation for a test method is followed by an alternate or equivalent designation, in brackets, the latter method can be considered technically equ
32、ivalent, though not necessarily identical, and might yield somewhat different numerical test results. Table 3.1 Test methods ASTM Standards ASTM D1676, Standard Test Methods for Film-Insulated Magnet Wire ASTM D2307, Standard Test Method for Thermal Endurance of Film-Insulated Round Magnet Wire ASTM
33、 D2519, Standard Test Method for Bond Strength of Electrical Insulating Varnishes by the Helical Coil Test ASTM D3145, Standard Test Method for Thermal Endurance of Electrical Insulating Varnishes by the Helical Coil Method ASTM D3251, Standard Test Method for Thermal Endurance Characteristics of El
34、ectrical Insulating Varnishes Applied Over Film-Insulated Magnet Wire ASTM D5642, Standard Test Method for Sealed Tube Chemical Compatibility Test ASTM E178, Standard Practice for Dealing with Outlying Observations IEC Standards IEC 60172, Test Procedure for the Determination of the Temperature Inde
35、x of Enamelled and Tape Wrapped Winding Wires ASTM D2307, Standard Test Method for Thermal Endurance of Film-Insulated Round Magnet Wire IEC 60317, Specications for Particular Types of Winding Wires (all parts) ASTM D1676, Standard Test Methods for Film- Insulated Magnet Wire IEC 60455-2, Resin Base
36、d Reactive Compounds Used for Electrical Insulation Part 2: Methods of Test IEC 60455-3, Resin Based Reactive Compounds Used for Electrical Insulation Part 3: Specications for Individual Materials (all sheets for individual resins) ASTM D3251, Standard Test Method for Thermal Endurance Characteristi
37、cs of Electrical Insulating Varnishes Applied Over Film-Insulated Magnet Wire IEC 60493-1, Guide for the Statistical Analysis of Ageing Test Data Part 1: Methods Based on Mean Values of Normally Distributed Test Results IEC TR 60493-2, Guide for the Statistical Analysis of Ageing Test Data Part 2: V
38、alidation of Procedures for Statistical Analysis of Censored Normally Distributed Data ASTM E178, Standard Practice for Dealing with Outlying Observations IEC 60505, Evaluation and Qualication of Electrical Insulation Systems IEC 60851, Winding Wires Test Method (all parts) IEC 61033, Test Methods f
39、or the Determination of Bond Strength of Impregnating Agents to an Enamelled Wire Substrate ASTM D2519, Standard Test Method for Bond Strength of Electrical Insulating Varnishes by the Helical Coil Test IEC 61857, Electrical Insulation Systems Procedures for Thermal Evaluation (all parts) IEC 61858-
40、1, Electrical Insulation Systems Thermal Evaluation of Modications to an Established Electrical Insulation System (EIS) Part 1: Wire-Wound Winding EIS ASTM D5642, Standard Test Method for Sealed Tube Chemical Compatibility Test IEEE Standards IEEE 1, Recommended Practice General Principles for Tempe
41、rature Limits in the Rating of Electrical Equipment and for the Evaluation of Electrical Insulation IEEE 99, Recommended Practice for the Preparation of Test Procedures for the Thermal Evaluation of Insulation Systems for Electric Equipment IEEE 101, Guide for the Statistical Analysis of Thermal Lif
42、e Test Data NEMA Standards JULY 18, 2017 SYSTEMS OF INSULATING MATERIALS GENERAL - UL 1446 6 Table 3.1 Continued on Next PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Table 3.1 Continued NEMA MW 1000, Magnet Wire JULY 18, 2017 SYSTEMS
43、OF INSULATING MATERIALS GENERAL - UL 1446 6AUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JULY 18, 2017 SYSTEMS OF INSULATING MATERIALS GENERAL - UL 1446 6B No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTIO
44、N OR DISTRIBUTION WITHOUT PERMISSION FROM UL 4 Glossary 4.1 For the purpose of this standard, the following denitions apply: 4.2 APPARENT THERMAL INDEX The unadjusted thermal index of an insulation system derived from a regression analysis of that systems thermal aging data, usually higher in value
45、than the systems rated temperature class. 4.3 CATALYST A substance that alters (usually increases) the rate at which a reaction occurs without being consumed into the reaction. 4.4 CURING AGENT A substance or mixture of substances that promote or control the reaction process and is consumed in the r
46、eaction. 4.5 CYCLE A time period of heat exposure, which is used to induce deterioration at the specic aging temperature, followed by conditioning and diagnostic testing. 4.6 DEAD METAL Metallic part that is at no electrical potential. With respect to the requirements in this Standard, dead metal pa
47、rts are to be considered the same as if they were at ground potential. 4.7 EIS ELECTRICAL INSULATION SYSTEM Electrical insulating structure containing one or more electrical insulating materials (EIM) together with associated conducting parts employed in an electrotechnical device. 4.8 ELECTRICAL IN
48、SULATION SYSTEM CLASS An agreed upon classication; refer to 6.5.5(c). 4.9 GENERAL PURPOSE MODEL (GPM) A unit constructed in accordance with the specications in the Standard for Electrical Insulation Systems Procedures for Thermal Evaluation Part 1: General Requirements Low-Voltage, IEC 61857-1, with
49、 specic description of the GPM in the Standard for Electrical Insulation Systems Procedures for Thermal Evaluation Part 21: Specic Requirements for General-Purpose Models Wire-Wound Applications, IEC 61857-21, except that: a) The slot assembly, comprised of both inner and outer slot plates, shall be constructed of stainless steel; and Exception: When stainless steel is not able to be used due to difficulty in mat
