UL-60745-2-5-BULLETINS-2007.pdf
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1、FOR INTERNAL UL OR CSDS USE ONLY NOT FOR OUTSIDE DISTRIBUTION Subject 60745-2-5 March 30, 2007 SUMMARY OF TOPICS The following changes in requirements are being proposed: (1) Adoption of the Fourth Edition of IEC 60745-2-5, Hand-Held Motor-Operated Electrical Tools Safety Part 2-5: Particular Requir
2、ements for Circular Saws, as the Fourth Edition of UL 60745-2-5, includes the following changes: a) Modifi cation of Clause 8.1 to delete text regarding the danger, warning, and caution statements and the exception regarding circular saws; b) Modifi cation of Clause 8.12.101.1(a) to add the term DAN
3、GER to item (a) and add a warning symbol; c) Clarifi cation of lower guard operation when making special cuts; d) Addition of Clause 19.3 to specify that Clause 19.3 of the part 1 does not apply; d) Modifi cation of Clause 19.101.2.1 to clarify measurement points for proximity and height restriction
4、s for a viewing aperture; e) Modifi cation of Clause 19.101.2.3 to specify criteria for measuring the distance between the guide plate and upper guard to determine compliance with the requirement; f) Addition to Annex K to eliminate reference to power cords for the instruction manual; g) Addition of
5、 Annex M to specify requirements for supports, work stands, or table saws for use with hand-held motor operated circular saws; h) Modifi cation of Clause AA.19.104 to clarify that the test performed on the riving knife to determine the level of displacement is to be performed in both directions. BAL
6、LOTS AND COMMENTS DUE: April 9, 2007 (1) Adoption of the Fourth Edition of IEC 60745-2-5, Hand-Held Motor-Operated Electrical Tools Safety Part 2-5: Particular Requirements for Circular Saws, as the Fourth Edition of UL 60745-2-5, includes the following changes: a) Modifi cation of Clause 8.1 to del
7、ete text regarding the danger, warning, and caution statements and the exception regarding circular saws; b) Modifi cation of Clause 8.12.101.1(a) to add the term DANGER to item (a) and add a warning symbol; c) Clarifi cation of lower guard operation when making special cuts; d) Addition of Clause 1
8、9.3 to specify that Clause 19.3 of the part 1 does not apply; d) Modifi cation of Clause 19.101.2.1 to clarify measurement points for proximity and height restrictions for a viewing aperture; e) Modifi cation of Clause 19.101.2.3 to specify criteria for measuring the distance between the guide plate
9、 and upper guard to determine compliance with the requirement; f) Addition to Annex K to eliminate reference to power cords for the instruction manual; g) Addition of Annex M to specify requirements for supports, work stands, or table saws for use with hand-held motor operated circular saws; h) Modi
10、fi cation of Clause AA.19.104 to clarify that the test performed on the riving knife to determine the level of displacement is to be performed in both directions. RATIONALE Proposal submitted by: Harmonization Working Group for the 60745 series of standards. The Fourth Edition of UL 60745-2-35 Hand-
11、Held Motor-Operated Electrical Tools Safety Part 2-5: Particular Requirements for Circular Saws is being proposed for adoption as a harmonized UL and CSA IEC-based standard. Please note that changes to existing requirements are not shown in the proposed Copyright Underwriters Laboratories Inc. Provi
12、ded by IHS under license with ULLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/02/2007 00:07:23 MDTNo reproduction or networking permitted without license from IHS -,-,- FOR INTERNAL UL OR CSDS USE ONLY NOT FOR OUTSIDE DISTRIBUTION text, and that the text is taken verbatim f
13、rom the IEC version. However, as a courtesy and to assist in the review of the this document, the primary changes from the Third Edition of IEC 60745-2-5 to the Fourth Edition of IEC 60745-2-5 are summarized as follows. SUMMARY OF MAJOR CHANGES TO IEC 60745-2-5; THIRD EDITION TO FOURTH EDITION Claus
14、e 8.1 was modifi ed to delete the text regarding the danger, warning, and caution statements and the exception regarding circular saws. These requirements were modifi ed and integrated into other instruction requirements in Clause 8. CLAUSE 8, MARKING AND INSTRUCTIONS Clause 8.1 was modifi ed to del
15、ete the text regarding the danger, warning, and caution statements and the exception regarding circular saws. These requirements were modifi ed and integrated into other instruction requirements in Clause 8. Clause 8.12.101.1 was renumbered to Clause 8.12.1.101.1 and modifi ed to move the term DANGE
16、R into Item (a). A graphic with the warning symbol was also added to Item (a). Clause 8.12.101.3 was renumbered to Clause 8.12.1.101.3 and Item (c) was modifi ed to clarify that a user can choose to retract the lower guard for special cuts, instead of indicating that the user should (always) retract
17、 the lower guard for special cuts. CLAUSE 19, MECHANICAL HAZARDS Clause 19.3 was added to specify that Clause 19.3 of the part 1 does not apply. Clause 19.101.2.1 was modifi ed as follows: (a) When determining compliance with the proximity restrictions for a viewing aperture for a motor casing not s
18、uitable for grasping (where no auxiliary handle is provided), the measurement to the aperture is made from the center of the of the switch trigger grasping surface with the switch in the off position. (b) Before following the procedures for determining the measuring point on the auxiliary handle or
19、motor casing in order to comply with the proximity restrictions for a viewing aperture, the guide plate shall be set to its maximum depth of cut and 90. (c) When determining compliance with the proximity restrictions for a viewing aperture, the measuring point on the auxiliary handle or motor casing
20、 shall be from its defi ned grasping surface. (d) When determining compliance with the height restrictions for a viewing aperture, the measurement point shall be determined with the guide plate set to its maximum depth of cut and 90. Clause 19.101.2.3 was modifi ed as follows: The point of measure f
21、rom the upper guard on the opposite side of the motor in Figure 109 is clarifi ed as being from the edge of the lateral side of the upper guard. Specifi c distances for compliance with Clause 19.101.2.3 are defi ned for specifi c blade diameters. MARCH 30, 2007SUBJECT 60745-2-5-2- Copyright Underwri
22、ters Laboratories Inc. Provided by IHS under license with ULLicensee=IHS Employees/1111111001, User=Wing, Bernie Not for Resale, 04/02/2007 00:07:23 MDTNo reproduction or networking permitted without license from IHS -,-,- FOR INTERNAL UL OR CSDS USE ONLY NOT FOR OUTSIDE DISTRIBUTION Specifi c crite
23、ria for measuring distance X of Figure 109 are defi ned based on the depth of cut and means of pivoting of the guide plate. ANNEX K Clause K.8.12.1.101.1 was added to specify a replacement statement for Item (e) of Clause 8.12.1.101.1, that eliminates reference to power cords. ANNEX M Annex M was ad
24、ded to specify compliance criteria for supports, work stands, or table saws for use with hand-held motor operated circular saws with a maximum blade diameter of 260 mm. ANNEX AA Clause AA.19.104 was modifi ed to clarify that the test performed on the riving knife to determine the level of displaceme
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