1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULMarch 6, 20081SUBJECT 2566OUTLINE OF INVESTIGATIONFORPART 2: LOW-VOLTAGE SURGE WITHSTAND TELECOMMUNICATIONSFUSESISSUE NO. 1MARCH 6, 2008Summary of TopicsThis first issue of the Outline of Investi
2、gation for Low-Voltage SurgeWithstand Telecommunications Fuses, Subject 2566, applies to Miniatureand Micro fuses rated for up to 600 Vac, 60 A limited duration interruptingcapability.The UL Foreword is no longer located within the UL Standard. For informationconcerning the use and application of th
3、e requirements contained in thisStandard, the current version of the UL Foreword is located onULStandardsInfoNet at: http:/ 2008 UNDERWRITERS LABORATORIES INC.UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULMARCH 6, 2008SUBJECT 25662No Text on
4、 This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULCONTENTS1 General 41.1 Scope .4MARCH 6, 2008 SUBJECT 2566 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL1 GeneralNote: This P
5、art is intended to be read together with Low-Voltage Surge Withstand TelecommunicationsOvercurrent Protector Components Part 1: General Requirements, hereafter referred to as Part 1. Thenumbering of the Clauses in this Part corresponds to like numbered Clauses in Part 1. The requirementsof Part 1 ap
6、ply unless modified by this Part.1.1 ScopeThis Part applies to Miniature and Micro fuses rated for up to 600 Vac, 60 A limited duration interruptingcapability.7.1.3 Arrangement of the DUT and dimensionsThisisgeneratedtextforfigtxt.MARCH 6, 2008SUBJECT 25664UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR
7、FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULo = copper layer, 35mu = connection for voltage drop measurementw = 5.0 mmP, T and R are dimensions associated with specific fuse dimensions.NOTES:1) Not-to-scale2) Dimensions are in millimeters.3) Solder resist to be applied in hatched a
8、reas (a) of main drawing.4) The land areas shall be tinned.Figure 2-2 Test board for surface mount fusesMARCH 6, 2008 SUBJECT 2566 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULo = copper layer, 35mu = connection for voltage drop measurementn=1,2,3,4or5w = 5.0 mme = 2.50 mmNOTES:1) Not-to-scale2) Dimensions are in millimeters.3) A mechanical device can be used as long as it is demonstrated that the results are the same.Figure 2-3 Test board for thru hole fusesMARCH 6, 2008SUBJECT 25666
