1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 4248-6 Fuseholders Part 6: Class HUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER
2、 REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Fuseholders Part 6: Class H, UL 4248-6 First Edition, Dated February 28, 2007 Summary of Topics This revision to ANSI/UL 4248-6 is being issued to update the UL approval date per a UL Standards reaffirmation of ANSI/
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10、THOUT PERMISSION FROM UL Association of Standardization and Certication NMX-J-009/4248/6-ANCE First Edition CSA Group CSA C22.2 No. 4248.6-07 First Edition Underwriters Laboratories Inc. UL 4248-6 First Edition Fuseholders Part 6: Class H February 28, 2007 (Title Page Reprinted: December 21, 2012) A
11、NSI/UL 4248-6-2007 (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 Association (operating a
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20、RIAL 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 fuseholders 6 7 Construction 6 7.6 Contacts of a cartridge fuseholde
21、r 6 8 Tests 9 8.1 General .9 8.4 Verication of temperature rise .9 FEBRUARY 28, 2007 NMX-J-009/4248/6-ANCE CSA C22.2 NO. 4248.6-07 UL 4248-6 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Preface This is the common ANCE, CSA Group, and UL
22、standard for Fuseholders Part 6: Class H. It is the rst edition of NMX-J-009/4248/6-ANCE, the rst edition of CSA C22.2 No. 4248-6, and the rst edition of UL 4248-6. This common standard was prepared by the Association of Standardization and Certication (ANCE), CSA Group, and Underwriters Laboratorie
23、s 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 CSA Subcommittee on Lo
24、w 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 Standards Council of Can
25、ada 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 itemized on the transmittal
26、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, it is important to n
27、ote 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 the same in technical
28、 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 is based on the liter
29、al 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 development organizati
30、ons 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-009/4248/6-ANCE CSA C22.2 NO. 4248.6-07 UL 4248-6 4UL COPYRIGHTED MATERIA
31、L 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 Listed or Recognized by UL mus
32、t 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 presently effective requireme
33、nts 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-009/4248/6-ANCE CSA C22.2 NO. 4248.6-07 UL 4248-6 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPR
34、ODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Fuseholders Part 6: Class H 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 corresponds to like numbered
35、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 fuseholders intended for use w
36、ith Class H Fuses as described in NMX-J-009/248/6-2000-ANCE, CSA C22.2 No. 248.6, UL 248-6, Low-Voltage Fuses Part 6: Class H Non-Renewable; and NMX-J-009/248/7-2000-ANCE, CSA C22.2 No. 248.7, UL 248-7, Low-Voltage Fuses Part 7: Class H Renewable Fuses. 4 Classication 4.1 Class H fuseholders have a
37、short-circuit withstand rating of 10,000 A. Class H fuseholders are rated 250 V or 600 V, and are divided into six body sizes in each voltage rating corresponding to the Class H fuse body sizes. 5 Characteristics 5.1 Summary of characteristics 5.1.3 Voltage and current rating 5.1.3.1 Class H fusehol
38、ders shall be rated 250 or 600 V. 5.1.3.2 Class H fuseholders shall be rated 30, 60, 100, 200, 400, or 600 A . 5.1.4 Withstand rating 5.1.4.1 Class H fuseholders shall have a short-circuit withstand rating of a 10,000 A. 6 Marking 6.1 Marking of fuseholders 6.1.1.1 In addition to the requirements of
39、 Part 1, the fuseholder shall be marked Use Class H Fuses . 7 Construction 7.6 Contacts of a cartridge fuseholder 7.6.1 The dimensions of a Class H fuseholder shall be as specied in Figure 7.6A or 7.6B, whichever is applicable. This is generated text for gtxt. FEBRUARY 28, 2007 NMX-J-009/4248/6-ANCE
40、 CSA C22.2 NO. 4248.6-07 UL 4248-6 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Figure 7.6A Class H fuseholder Ferrule-contact type Tabs shown are a typical end-stop conguration. Class of fuse Potential rating of fuse, volts Current rati
41、ng of fuse, amperes Dimensions, mm (in) BCDE G Distance a between contact clips Minimum width of contact clip Diameter of ferrule Thickness of blade Distance between end stops Minimum Maximum H 250 30 25.4 (1.0) 12.7 (0.5) 14.27 (0.562) 51.59 (2.031) 53.97 (2.125) 60 44.45 (0.750) 15.88 (0.625) 20.6
42、2 (0.812) 76.99 (3.031) 79.38 (2.125) 100 101.6 (4.0) 22.22 (0.875) 3.18 (0.125) 200 114.3 (4.5) 31.75 (1.250) 4.75 (0.187) 400 127.0 (5.0) 44.45 (1.750) 6.35 (0.250) 600 152.4 (6.0) 53.97 (2.125) 6.35 (0.250) 600 30 101.6 (4.0) 12.7 (0.5) 20.62 (0.812) 127.79 (0.31) 130.17 (5.312) 60 107.95 (4.250)
43、 15.88 (0.625) 26.97 (1.062) 127.00 (0.531) 142.88 (5.63) 100 152.4 (6.0) 22.22 (0.875) 3.18 (0.125) 200 177.8 (7.0) 31.75 (1.250) 4.75 (0.187) 400 203.2 (8.0) 44.45 (1.750) 6.35 (0.250) 600 228.6 (9.0) 53.97 (2.125) 6.35 (0.250) a Tolerances for the B dimensions are: 60 A or less: plus 0.79 mm (0.3
44、1 in) and minus 1.57 mm (0.62 in); 100 and 200 amperes: plus 1.57 mm (0.62 in) and minus 0.79 mm (0.31 in); 400 and 600 amperes: plus 2.36 mm (0.093 in). FEBRUARY 28, 2007 NMX-J-009/4248/6-ANCE CSA C22.2 NO. 4248.6-07 UL 4248-6 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DIST
45、RIBUTION WITHOUT PERMISSION FROM UL Figure 7.6B Class H fuseholder Knife-blade type Class of fuse Potential rating of fuse, volts Current rating of fuse, amperes Dimensions, mm (in) BCDE G Distance a between contact clips Minimum width of contact clip Diameter of ferrule Thickness of blade Distance
46、between end stops Minimum Maximum H 250 30 25.4 (1.0) 12.7 (0.5) 14.27 (0.562) 51.59 (2.031) 53.97 (2.125) 60 44.45 (0.750) 15.88 (0.625) 20.62 (0.812) 76.99 (3.031) 79.38 (2.125) 100 101.6 (4.0) 22.22 (0.875) 3.18 (0.125) 200 114.3 (4.5) 31.75 (1.250) 4.75 (0.187) 400 127.0 (5.0) 44.45 (1.750) 6.35
47、 (0.250) 600 152.4 (6.0) 53.97 (2.125) 6.35 (0.250) 600 30 101.6 (4.0) 12.7 (0.5) 20.62 (0.812) 127.79 (0.31) 130.17 (5.312) 60 107.95 (4.250) 15.88 (0.625) 26.97 (1.062) 127.00 (0.531) 142.88 (5.63) 100 152.4 (6.0) 22.22 (0.875) 3.18 (0.125) 200 177.8 (7.0) 31.75 (1.250) 4.75 (0.187) 400 203.2 (8.0
48、) 44.45 (1.750) 6.35 (0.250) 600 228.6 (9.0) 53.97 (2.125) 6.35 (0.250) a Tolerances for the B dimensions are: 60 A or less: plus 0.79 mm (0.31 in) and minus 1.57 mm (0.62 in); 100 and 200 amperes: plus 1.57 mm (0.62 in) and minus 0.79 mm (0.31 in); 400 and 600 amperes: plus 2.36 mm (0.093 in). FEBR
49、UARY 28, 2007 NMX-J-009/4248/6-ANCE CSA C22.2 NO. 4248.6-07 UL 4248-6 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 8 Tests 8.1 General 8.1.1 Types of tests 8.1.1.1.1 Each fuseholder shall be subjected to the tests as specied in Part 1. 8.4 Verication of temperatur
