August 27, 2004
SUMMARY OF REQUIREMENTS
The following is a brief summary of the modifications between the First Edition and the Third Edition clauses in the Standard for Hand-Held Motor-Operated Electric Tools -Safety, UL/CSA 60745, which have a revised future Effective Date of June 1, 2010 and the action that may be required to determine compliance. UL 45 is still in-line to have all products withdrawn by June 1, 2007.
Clauses/Sub-Clauses / General Subject and Comment – Part 1 Requirements /1.1 Scope / UL 45 Listed products must undergo complete testing and construction review
1.1 Scope / Transportable tools can no longer be covered by his standard. Current Listings to the First Edition may remain until June 1, 2010, and at that time they must be withdrawn from the category.
2 / UL 61058 switch standard is now referenced. Switches must comply with this standard, or Annex I. (Note: As a matter of clarification an SI will be prepared to allow the use of a UL 1054 R/C switch that is accompanied by a CB test report that stipulates that the switch has been subjected to the 50,000 cycles test. This will be in effect until June 1, 2010 when UL 60745 takes effect, at which time we expect there will be more UL 61058 switches readily available.)
3.2.6 and 3.2.9 / As a matter of clarification, if product has been previously evaluated for less than the rated input/current, then the following clauses should also be considered also be affected 5, 8, 11, 12, 24, 25 and L6 when applicable.
3.7.2 / Detachable parts defined as parts that may require the use of tools that are recommended for removal for servicing. Other clauses affected include 9.2, 9.4, 26.3, K9.2, and L9.101 when applicable.
5.2 and 5.3 / Testing must be carried out on a single sample and in the order prescribed by the standard to allow for cumulative stress. Tests involving modification to the tool are performed on a separate sample.
Single sample test would typically include all non-destructive tests. Destructive testing would include Abnormal tests when the tool no longer will operate, or when modifications are made to the tool for the purpose of providing leads and thermocouples to the inside the tool for the Heating Test.
An effort must be made when conducting new Listings to accommodate as many of the tests on one sample where the results could possibly affect the tool in later tests. This is of course with the exceptions noted above related to destructive and disassembling of the tool.
Note: For the purpose of this file review, UL will allow products tested to the first edition to represent partial testing with the exceptions noted below provided that a note is added to the procedure that will reflect that the tool is not be given a CB license unless testing has been completed in accordance with IEC 60745 Sub-clauses 5.2 and 5.3.
5.7.3 / Tools with a rated voltage range and rated in watts must be subjected to range of voltages and comply with the specified factor.
5.14 / Attachments that could affect the rating of the tool are tested in accordance with their respective Part 2 standard. If no Part 2 exists, then tests are made in accordance with the manufacturers instructions.
7.2, 8.6 / Ingress protection ratings shall be verified to determine compliance with IEC 60529.
8.10 / Unless obvious the correct symbol for the “off” position of the mains switch position is “O” and not “0”. The “O” symbol shall not be used for any other indication, other than allowed by the standard.
8.12 / Instruction manuals will need to be revised and reviewed for all tools
8.13 / Labels and label systems must meet rub test and tests specified in 8.13DV
9.1 / Protection against access to live parts requires removal of parts in accordance with the definition of “detachable parts, (Sub-clause 3.7.2. See also 21.36 for parts involving circuits that use protective impedance.)
9.4 / Class II tools and Class II constructions must comply with the finger probe even after the removal of detachable parts. (Again refer to 3.7.2)
9.4DV.2 / Insulated stick handles in proximity to non-insulated parts must have a flange height of at least 6 mm.
11 / Rated input/current must be at least 110% of the measured no-load input or current as applicable.
12 / Class E materials have been removed from Table 1. Acceptance of previously accepted Class E constructions by materials only must now undergo testing to determine compliance with UL 1446, or the Class E designation must be dropped and the insulation system must comply with 12.6.
14.2 / Tools subject to spillage will need to be re-evaluated if covers or other parts are removable without the aid of tools.
15, Table 2 / If a winding and capacitor are connected together, then a 2U + 1000 volt potential is required to be applied between applicable parts connected to external conductors
16.1 / New requirements for tools that employ overload protection for transformers and associated circuitry.
17.1 / Tools previously subjected to dielectric potentials at only 50% of the values of Table 2 must be retested and subjected to dielectric potentials at 75% of the values of Table 2.
18.1-18.6 / Tools employing heating elements are now more fully evaluated
18.8-18.9 / Tools with induction motors and 3 phase motors must comply with temperature limits specified in Table 3.
19.3 / Probe shown in Figure 1 shall be used to judge accessibility to moving parts through dust collection openings
20.2 / Brush caps and other parts of enclosure likely to break must be subjected to spring-operated impact test apparatus. All decorative covers are removed prior to test.
20.3 / Dielectric following all impacts increased from when questionable at 75% of the values shown in Table 2, to 100% of the values shown in Table 2.
20.4DV.1 / If all grasping surfaces and auxiliary handles were not previously subjected to a single impact to each recommended grasping surface then further testing is required, including a 1250-volt ac potential. (Note look for a future standards revision related to length of time to apply potential and the results which is based upon compliance requirements outlined in Cl. 15.)
21.20 / IPXX rating, previously addressed in 8.1 and 14.
21.22 / Snap-in covers and enclosures must be evaluated to this clause and the probes shown in Figures 1 and 7 are applied following heating conditions specified in Clause 12.
21.23 / New axial force for handles and knobs to evaluate securement in cases where removal might result in a hazard.
21.26 / Direct contact between live parts and thermal insulation shall be effectively prevented unless material is non-corrosive, non-hygroscopic, and non-combustible. Construction is further proven out by 14.3 and 29.2.
21.28 / Verify parts separated from protective impedance shall comply with the requirements for double insulation or reinforced insulation.
21.34 / Capacitors are not allowed to be connected between the contacts of a thermal cut-out.
21.36 / Verify protective impedance requirements were addressed in First Edition. Also addressed by 9.1.
23.1 / As a matter of clarification this clause stipulates that components are to comply with relevant IEC standard. Sub-Clause 2DV.1 overrides this requirement by specifying that IEC and ISO documents are to be replaced by US and Canadian requirements for the purpose of complying with this standard. In the event no UL standard exist for a particular reference, then the IEC or ISO standard will be used as applicable.
23.1.10, 23.1.11 / Switches must now meet 50K cycles according to UL 61058, or Annex I. Refer to the exception noted previously as part of the clause 2 reference.
23.5 / Motors connected to supply mains and having inadequate insulation for the rated voltage of the tool must now comply with Annex B.
24.2 / Type M constructions are no longer defined. Review of current requirements is needed to ensure that appropriate constructions are described as Type X or Y and tested per the Third Edition.
24.14, Table 7 / New strain relief and torque tests are required
24.16 / Part of testing mentioned in the comments above in 24.2 for Type X constructions
24.20 / Part of verification mentioned in the comments above 24.2 for Type X constructions
24.21 / Tools provided with appliance inlets will need to be evaluated for accessibility to test finger, Figure 1.
25.1 / Part of verification mentioned in the comments above 24.2 for Type X constructions
25.7 / Confirmation of Type X construction required as mentioned in comment 24.2 above, terminals to be clearly recognizable and accessible after removing covers. All terminals must be located behind one cover, or one part of the enclosure.
26.1 / Confirm no printed wiring board traces used as part of the protective earthing.
26.2DV / Confirm that all protective earthing and bonding connections utilizing a quick-connector comply with the minimum terminals prescribed.
26.4 / Confirm all parts of the earthing connections are resistant to corrosion by materials and testing to 30.1
28.1 / Reference to UL 840 has been dropped. New creepage and clearance distances are now prescribed and a re-evaluation is necessary. Distances will have to be verified, or confirmation of Cl. 18 abnormals will need to be confirmed (Note: Look for a tentative US/CAN deviation to go from 4.0 mm to 2.5 mm in bottom row for creepage distances between metal parts separated by supplementary insulation for ≤ 130V)
29.1 / Min. 125ºC Ball Pressure test is now required on parts supporting live parts, including connections and parts providing supplementary and reinforced insulation.
Ball pressure test also requires the part to be cooled to room temperature within 10 seconds following removal from the oven.
29.2 / Parts of non-metallic material that could propagate flames originating from inside the tool are required to be resistant to flame.
Annex B / Motors not isolated from source, but operating at less than 42-volts must comply with these requirements.
Annex K - BATTERY REQUIREMENTS / Review applicable paragraphs identified above.
K.1 Scope / General-purpose batteries are not addressed by this standard.
K.8.1 / Nameplate revisions may be necessary to include manufacturer’s name or country of origin.
K.8.12.1 / Manual review will be necessary. Requirements have changed.
K.9.2 / Verify if there is access to parts with hazardous voltages as defined by K9.2 using the test finger shown in Figure 1.
K.12 / Tools evaluated with a load must be subjected to a no-load Heating Test.
K.18.1.d),e) (Cords tested with cotton 1st Ed. 17.1(3),(8)) / Shorts are introduced between accessible cord between tool and charger and between tool and separable battery pack are placed and covered with the same materials specified for all the other abnormal tests in lieu of the surgical cotton previously used.
K.18 / Leads required to induce shorts shall not exceed 10 m-ohms.
K.19 / Tools marked with a direction of movement shall be evaluated to ensure that the battery pack cannot be installed/connected to the tool incorrectly.
K.20.1 (References 20.2) / IEC Spring Hammer is now part of the Mechanical Strength testing. Weakest points of the enclosure and battery backs need to be evaluated.
K.20.3 / Separable battery packs need to undergo a 1m drop test independently as well as in the tool.
K21.101 / Tools need to be evaluated and redesigned if they can readily accept general- purpose batteries.
K.22.3 / Tools that utilize a hazardous voltage must employ wiring that complies with Sub-clause 22.3
K.27.1 / Screws and connections must comply with Clause 27.
K.29.1 / Ball pressure test requires the part to be cooled to room temperature within 10 seconds following removal from the oven.
Annex L / All New- Related to battery tools provided with mains connection or non-isolated sources. Tools of this must undergo a complete evaluation.
Clauses/Sub-Clauses / General Subject and Comment – Part 2 Requirements
Part 2-1 (Drills) / See Part 1 Requirements
8.12.1 / Added new verbatim warnings; ear protection for impact drills and use auxiliary handles
12.2 / Requirement is based upon 80% of torque, not 4/5 of rated current and input. Verification of applied torque may be necessary.
19.101 / Added new stall torque requirements for handles. Calculations and measurements may result in a new handle design.
2-2 (Screwdrivers and Impact Wrenches) / Refer to Part 1 Requirements
Part 2-4 (Sanders) / Refer to Part 1 Requirements
17.2 / Clarification was made in regard to the endurance test. This information should be reviewed.
Part 2-5 (Circular Saws / Refer to Part 1 Requirements
1.1 / Circular saws with abrasive wheels are not covered by this standard
3.102 / Blade coverage is now 20% of the blade radius rather than “root of tooth”.
8.12.2, 18.12.101 / In addition to the new instruction manual requirements, saws with a riving knife are also now addressed. All manuals will need to be reviewed
19.1 / Guarding systems must comply with either Annex AA or Annex BB
19.101 / Guarding above platen must be reevaluated. Openings in viewing window have been limited in size
19.101.2 / Distance between guard and blade is now limited by probe shown in Fig. 105.
19.101.2.1 / The requirement was to cover the teeth gullet, now the coverage is a function of the blade diameter.
19.101.3 / New requirements for plunge type saws which must be reviewed
19.102.3 / For blades less than 210 mm, the closing time has been reduced from 0.3 s to 0.2 s.
19.102.5 / Saws with a tow guard shall lock in place automatically.
19.102.6 / New requirement for accessibility to blade for saws equipped with a riving knife.