1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 4248-15 Fuseholders Part 15: Class TUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTH
2、ER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Fuseholders Part 15: Class T, UL 4248-15 First Edition, Dated February 28, 2007 Summary of Topics This revision to ANSI/UL 4248-15 is being issued to update the UL approval date per a UL Standards reaffirmation of
3、ANSI/UL 4248-15, NMX-J-009/4248/15-ANCE, and CSA C22.2 No. 4248.15-07. Text that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. All rights reserved. No part of this publication may be reproduced, stored in a retrieval syst
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10、IBUTION WITHOUT PERMISSION FROM UL Association of Standardization and Certication NMX-J-009/4248/15-ANCE First Edition CSA Group CSA C22.2 No. 4248.15-07 First Edition Underwriters Laboratories Inc. UL 4248-15 First Edition Fuseholders Part 15: Class T February 28, 2007 (Title Page Reprinted: Decemb
11、er 21, 2012) ANSI/UL 4248-15-2007 (R2012)UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Commitment for Amendments This standard is issued jointly by the Association of Standardization and Certication (ANCE), the Canadian Standards Associati
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20、COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS Preface .4 1 General 6 1.1 Scope .6 4 Classication .6 5 Characteristics 6 5.1 Summary of characteristics 6 6 Marking 6 6.1 Marking of fuseholder .6 7 Construction 6 7.6 Contacts of a cart
21、ridge fuseholder 6 8 Tests 9 8.1 General .9 8.4 Verication of temperature rise .9 FEBRUARY 28, 2007 NMX-J-009/4248/15-ANCE CSA C22.2 NO. 4248.15-07 UL 4248-15 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Preface This is the common ANCE,
22、CSA Group, and UL standard for Fuseholders Part 15: Class T. It is the rst edition of NMX-J-009/4248/15-ANCE, the rst edition of CSA C22.2 No. 4248-15, and the rst edition of UL 4248-15. This common standard was prepared by the Association of Standardization and Certication (ANCE), CSA Group, and Un
23、derwriters Laboratories Inc. (UL). The efforts and support of the CANENA Technical Harmonization Subcommittee 32B Fuseholders are gratefully appreciated. This standard is considered suitable for use for conformity assessment within the stated scope of the standard. This standard was reviewed by the
24、CSA Subcommittee on Low voltage fuses, under the jurisdiction of the CSA Technical Committee on Industrial Products and the CSA Strategic Steering Committee on Requirements for Electrical Safety, and has been formally approved by the CSA Technical Committee. This standard will be submitted to the St
25、andards Council of Canada for approval as a National Standard of Canada. This standard has been approved by the American National Standards Institute (ANSI) as an American National Standard. A UL standard is current only if it incorporates the most recently adopted revisions, all of which are itemiz
26、ed on the transmittal notice that accompanies the latest set of revised requirements. Where reference is made to a specic number of samples to be tested, the specied number shall be considered a minimum quantity. Note: Although the intended primary application of this standard is stated in its scope
27、, it is important to note that it remains the responsibility of the users of the standard to judge its suitability for their particular purpose. Level of harmonization This standard is published as an identical standard for ANCE, CSA Group, and UL. An identical standard is a standard that is exactly
28、 the same in technical content except for national differences resulting from conicts in codes and governmental regulations. Presentation is word for word except for editorial changes. Interpretations The interpretation by the standards development organization of an identical or equivalent standard
29、 is based on the literal text to determine compliance with the standard in accordance with the procedural rules of the standards development organization. If more than one interpretation of the literal text has been identied, a revision is to be proposed as soon as possible to each of the standards
30、development organizations to more accurately reect the intent. ANCE effective date The effective date for ANCE will be announced through the Diario Ocial de Ia Federacin (Official Gazette) and is indicated on the cover page. DECEMBER 21, 2012 NMX-J-009/4248/15-ANCE CSA C22.2 NO. 4248.15-07 UL 4248-1
31、5 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CSA Group effective date The effective date for CSA Group will be announced through CSA Informs or a CSA Group certication notice. UL effective date As of November 2, 2009 all products Liste
32、d or Recognized by UL must comply with the requirements in this standard. Between February 28, 2007 and November 2, 2009, new product submittals to UL may be evaluated under all requirements in this standard or, if requested in writing, evaluated under presently effective requirements only. The pres
33、ently effective requirements are contained in the tenth edition of UL 512. A UL effective date is one established by Underwriters Laboratories Inc. and is not part of the ANSI approved standard. DECEMBER 21, 2012 NMX-J-009/4248/15-ANCE CSA C22.2 NO. 4248.15-07 UL 4248-15 5UL COPYRIGHTED MATERIAL NOT
34、 AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Fuseholders Part 15: Class T 1 General This Part is intended to be read together with the Standard for Fuseholders Part 1: General Requirements, hereafter referred to as Part 1. The numbering of the Clauses in this Part
35、corresponds to like numbered Clauses in Part 1. The requirements of Part 1 apply unless modied by this Part. For Clauses not shown below, refer to the Standard for Fuseholders Part 1: General Requirements, NMX-J-009-4248-ANCE CSA C22.2 No. 4248.1 UL 4248-1. 1.1 Scope 1.1.2 These requirements cover f
36、useholders intended for use with Class T Fuses as described in NMX-J-009/248/15-2000-ANCE, CSA C22.2 No. 248.15, UL 248-15, Low-Voltage Fuses Part 15: Class T Fuses. 4 Classication 4.1 Class T fuseholders have a short-circuit withstand rating of 200 000 A. Class T fuseholders are rated 300 V or 600
37、V and are divided into eight body sizes in each voltage rating corresponding to the Class T fuse body sizes. 5 Characteristics 5.1 Summary of characteristics 5.1.3 Voltage and current rating 5.1.3.1 Class T fuseholders shall be rated 300 V or 600 V. 5.1.3.2 Class T fuseholders shall be rated 30, 60,
38、 100, 200, 400, 600 A, 800 A or 1200 A. 5.1.4 Withstand rating 5.1.4.1 Class T fuseholders shall have a short-circuit withstand rating of a 200 000A. 6 Marking 6.1 Marking of fuseholder 6.1.1.1 In addition to the requirements of Part 1, the fuseholder shall be marked Use Class T Fuses . 7 Constructi
39、on 7.6 Contacts of a cartridge fuseholder 7.6.1 The dimensions of a Class T fuseholder shall be as specied in Figures 7.6A or 7.6B, whichever is applicable. This is generated text for gtxt. FEBRUARY 28, 2007 NMX-J-009/4248/15-ANCE CSA C22.2 NO. 4248.15-07 UL 4248-15 6UL COPYRIGHTED MATERIAL NOT AUTH
40、ORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Figure 7.6A Class T fuseholder Fuse not bolted in place Class of fuse Potential rating of fuse, volts Current rating of fuse, amperes Dimensions of a Class T fuseholder Fuse not bolted in place Dimensions, mm (in) BCDE G Dist
41、ance between contact clips Minimum width of contact clip Diameter of ferrule Thickness of blade Distance between end stops Minimum Maximum T (Fuse not Bolted in Place 300 30 7.619 (0.330) a 7.37 (0.290) 10.31 (0.406) 22.86 (0.900) 23.62 (0.930) 60 7.619 (0.300) a 7.37 (0.290) 14.3 (0.563) 22.86 (0.9
42、00) 23.62 (0.930) 100 23.114 (0.910) b 13.08 (0.515) 3.18 (0.125) 200 23.114 (0.910) b 16.64 (0.655) 4.74 (0.188) 400 23.365 (0.920) b 20.4 (0.803) 6.35 (0.250) 600 23.875 (0.940) b 24.26 (0.955) 9.52 (0.375) 600 30 23.622 (0.930) c 7.37 (0.290) 14.3 (0.563) 39.12 (1.540) 40.13 (1.580) 60 18.796 (0.
43、740) a 9.91 (0.390) 20.62 (0.812) 40.64 (1.6) d 41.4 (1.630) d a Tolerances 0.51 mm (0.020 in) b Tolerances 1.3 mm (0.050 in) c Tolerances 0.76 mm (0.030 in) d Minimum of 1.78 mm (0.070 in) clearance at one end shall be provided for plate. Distance may be 42.42 43.18 (1.670 1.700) with clearance at
44、each end for plate. FEBRUARY 28, 2007 NMX-J-009/4248/15-ANCE CSA C22.2 NO. 4248.15-07 UL 4248-15 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Figure 7.6B Class T fuseholder Fuse bolted in place Class of fuse Potential rating of fuse, vol
45、ts Current rating of fuse, amperes Dimensions of a Class T fuseholder fuse bolted in place Dimensions, mm (in) Center-to- center of studs or threaded holes a Size of stud or threaded hole b Minimum unobstructed clearance End-of-terminal to center of stud or threaded hole - maximum HIJK T 300 100 39.
46、52 (1.556) 6.35 (0.250) 55.27 (2.176) 8.64 (0.340) 200 43.05 (1.695) 7.94 (0.312) 62.46 (2.458) 10.41 (0.410) 400 46.84 (1.844) 9.53 (0.375) 70.87 (2.790) 12.19 (0.480) 600 51.59 (2.031) 11.11 (0.437) 78.82 (3.103) 14.22 (0.560) 800 56.36 (2.219) 12.70 (0.5) 86.74 (3.415) 16.51 (0.650) 1200 64.29 (2
47、.531) 14.29 (0.562) 102.62 (4.040) 10.03 (0.710) 600 100 59.74 (2.352) 6.35 (0.250) 76.02 (2.993) 8.64 (0.340) 200 63.68 (2.507) 7.94 (0.312) 83.57 (3.290) 10.41 (0.410) 400 69.06 (2.719) 9.53 (0.375) 93.09 (3.665) 12.19 (0.480) 600 75.01 (2.953) 11.11 (0.437) 102.21 (4.024) 14.22 (0.560) 800 80.57
48、(3.172) 12.70 (0.5) 110.96 (4.368) 16.00 (0.630) a Tolerance is 0.38 mm (0.015 in) for rigid studs or threaded holes. b End stops that prevent insertion of larger case size fuse in a smaller fuseholder are required if captive stud oats in fuseholder or if stud or threaded hole dimension 1 is 1.59 mm
49、 (1/16 in) smaller size than specied. FEBRUARY 28, 2007 NMX-J-009/4248/15-ANCE CSA C22.2 NO. 4248.15-07 UL 4248-15 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 8 Tests 8.1 General 8.1.1 Type of tests 8.1.1.1.1 Each fuseholder shall be subjected to the tests as specied in Part 1. 8.4 Verication of
