UL-60947-4-1-BULLETINS-2006.pdf
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1、FOR INTERNAL UL OR CSDS USE ONLY NOT FOR OUTSIDE DISTRIBUTION Subject 508 (60947-1, 60947-4-1) November 17, 2006 SUMMARY OF TOPICS The following topics were discussed at the meeting: 1. UL 60947-1 and from d) and put it on the end of e).This proposal will proceed to ballot. Change heading of Section
2、 18.5 from Open-Phase Protection to Phase Loss Protection.This proposal will proceed to ballot. In paragraph 23.1, the following statement should be placed before Temperature Test, Section 43., .applicable construction requirements in Sections 4 41 of this standard and the. in paragraph 23.1. This p
3、roposal will proceed to ballot. Add f) minimum 14 AWG for power circuits. to paragraph 25.5.1.Paragraph 25.5.1 was revised and defi nitions for feeder and power circuit were added from UL 508A. These proposals will proceed to ballot. Change reference in paragraph 26.1 from UL 1950 to UL 60950-1. Add
4、 this standard to Appendix A.This proposal will proceed to ballot. The exception to paragraph 37.3 should be adjusted (indented more) to the left. It appears that it is an exception to part 3) of (c) but it is an exception to all of (c).The exception was revised to clarify which item it applies to.
5、This proposal will proceed to ballot. The reference in paragraph 44.4 should be to 44.1 instead of 45.1.This proposal will proceed to ballot. The UL 840 references in paragraph 45.2 should be to Section 7 and Table 7.1 instead of Section 5 and Table 5.1.This proposal will proceed to ballot. In Table
6、 46.1, change AC Electrical Discharge Lamps (Electronic Ballast) to AC Electrical Discharge Lamps (Electronic Fluorescent Ballast).This proposal will proceed to ballot. NOVEMBER 17, 2006SUBJECT 508-14- Copyright Underwriters Laboratories Inc. Provided by IHS under license with ULLicensee=North Carol
7、ina State University/5618801100 Not for Resale, 11/22/2006 00:15:01 MSTNo reproduction or networking permitted without license from IHS -,-,- FOR INTERNAL UL OR CSDS USE ONLY NOT FOR OUTSIDE DISTRIBUTION Add new paragraph 51.1.2.3 as follows: 51.1.2.3 Testing shall be conducted with Class H and K fu
8、ses. Change numbering of existing paragraphs 51.1.2.3 and 51.1.2.4 to 51.1.2.4 and 51.1.2.5 respectively. Proposed new paragraph 51.1.2.3 was revised and it was decided to proceed to ballot this item as a separate ballot item from the other miscellaneous revisions. Add following sentence to the end
9、of paragraph 51.2.1 Samples for the test are to be selected among motor control devices employing the largest and smallest size current element that may be used with the protective device specifi ed for the motor control device.This proposal will proceed to ballot. Change the heading of Section 61C
10、from Electronic Ballasts to Electronic Fluorescent Ballasts.This proposal will proceed to ballot. Change paragraph 106.3 as follows, A polymeric material that is used as the enclosure for a fl oat switch or encloses or acts as a partial enclosure of electrical components in a fl oat operated switch
11、shall comply with 6.5.1 and the Water Exposure and Immersion Tests in the Standard for Polymeric Materials Use in Electrical Equipment Evaluations, UL746C.This proposal will proceed to ballot. Change paragraph 106.4 as follows, The enclosures of a fl oat-operated switches, incorporating complete or
12、partial enclosures of electrical components, such as those constructions meant to be mounted to the wall of a vessel, and pressure operated switches incorporating complete or partial enclosures of electrical components, such as those constructions meant to be mounted to the wall of a vessel shall co
13、mply with the construction, performance, and marking requirements for enclosures in Sections 6 11 of UL 508. This proposal will proceed to ballot. Revise Table 148.1 as follows: Remove the 2 (calibration test) from column 3. Add a new column between columns 1 and 2, name 2 and put a number 1 in the
14、calibration row. Renumber columns 2, 3 and 4 as 3, 4 and 5 respectively.This proposal will proceed to ballot. Revise paragraph 151.1 as follows, After the short-circuit tests in 149.1 and 150.1, The device shall comply with the calibration testing specifi ed in Section 48.This proposal will proceed
15、to ballot. Remove exception to paragraph 174B.1.1.Based upon STP feedback, it was decided to proceed to ballot this item as a separate ballot item from the other miscellaneous revisions. PROPOSALS 2.9.1 FEEDER CIRCUIT The conductors and circuitry on the supply side of the branch circuit overcurrent
16、protective device. 2.20.1 POWER CIRCUIT Conductors and components of branch and feeder circuits. 18.5 Phase loss Open-phase protection 23.1 A transformer employed in industrial control equipment shall comply with the appropriate UL standards for transformers, unless the load is part of the equipment
17、, in which case the transformer shall comply with the applicable construction requirements in Sections 4 41 of this standard and the Temperature Test, Section 43, and the Dielectric Voltage-Withstand Test, Section 49, in this standard. Exception:Pulse and current transformers constructed in a manner
18、 other than allowed by the applicable UL transformer standard are considered to be in compliance with this requirement if they can withstand, without breakdown, a dielectric voltage withstand potential in accordance with Section 49, applied NOVEMBER 17, 2006SUBJECT 508-15- Copyright Underwriters Lab
19、oratories Inc. Provided by IHS under license with ULLicensee=North Carolina State University/5618801100 Not for Resale, 11/22/2006 00:15:01 MSTNo reproduction or networking permitted without license from IHS -,-,- FOR INTERNAL UL OR CSDS USE ONLY NOT FOR OUTSIDE DISTRIBUTION between the primary and
20、the secondary windings. An example of transformer constructions for which this exception would apply are those that may rely upon magnet wire coating to provide isolation instead of inter-winding tape. 25.5.1 Except as noted in 25.5A.5, industrial control equipment shall be provided with wiring term
21、inals or leads for connection of conductors having an ampacity or wire size not less than the largest of the following for each fi eld wiring terminal: a) The ampere rating of the circuit equipment. b) One-hundred twenty-fi ve percent of the full-load motor current specifi ed in Table 45.2 or 45.3 f
22、or the horsepower rating, or, in the case of power conversion equipment, in which the input current is different from motor full-load current, 125 percent of maximum rated input current. c) One-hundred twenty-fi ve percent of the resistive ampere rating of the devices intended to control fi xed elec
23、tric space-heating equipment loads. d) For equipment controlling a direct-current motor intended to be operated from a rectifi ed single-phase power supply; 1) One-hundred ninety percent of full load current when a half wave rectifi er is used. 2) One-hundred fi fty percent of full load current when
24、 a full wave rectifi er is used. Exception:Item (d) does not apply when the product is marked in accordance with 65.9. e) 14 AWG (2.1 mm2) for control, signal, or sensor circuits unless the terminals are intended and marked (on product or installation instructions) for the connection of smaller cond
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