UL-588-BULLETINS-2006.pdf
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1、FOR INTERNAL UL OR CSDS USE ONLY NOT FOR OUTSIDE DISTRIBUTION Subject 588 July 28, 2006 SUMMARY OF TOPICS The following topics are being recirculated: 2. Revision of individual fl ashing lamp requirements to allow alternative constructions that do not permit an individual-fl ashing lamp to be instal
2、led in a lampholder intended for a steady-illuminating lamp in the same lighting string 8. Requirements for lighting sculptures consisting of multiple sections 12. Increased current rating for motorized tree stands and lighting sculptures 14. Addition of requirements for lighting strings intended fo
3、r use on a patio umbrella 17. Revision to allow a light string that operates without bulbs in the sockets 18. Addition of alternate rain test for series connected lighting strings 19. Clarifi cation of lamp replacement instructions 20. Miscellaneous corrections and clarifi cations STP BALLOTS AND AL
4、L COMMENTS DUE: September 11, 2006 For your convenience in review, proposed additions to the previously proposed requirements are shown underlined and proposed deletions are shown lined-out. 2. Revision of individual fl ashing lamp requirements to allow alternative constructions that do not permit a
5、n individual-fl ashing lamp to be installed in a lampholder intended for a steady-illuminating lamp in the same lighting string RATIONALE Based on the comments received on Topic 2 of the March 10, 2006 proposal, the UL 588 proposal has been revised. Responses to the comments have been posted within
6、the Proposal Review Work Area. PROPOSAL 28.3 A series-connected string intended for use with individual-fl ashing lamps that operate by means of a self-contained thermostatically-operated shunting device shall consist of one of the following (see also 28.4): a) Not less than 18 push-in lampholders i
7、n series with 2 midget-screw lampholders. b) Not less than 18 midget-screw lampholders in series with 2 miniature-screw lampholders. FOR INTERNAL UL OR CSDS USE ONLY NOT FOR OUTSIDE DISTRIBUTION c) Not less than 35 lamps connected in series with a minimum of half of the lamps in the lighting string
8、being steady-illuminating and one of the following: 1) All of the lamps in the string are not replaceable, or 2) All the lamps in the string are replaceable and the lighting string is constructed such that the individual-fl ashing lamps cannot fi t into the lampholder such that it makes an electrica
9、l connection with the lampholders intended for steady-illuminating lamps. In addition, the lamp adapters must be secured to the lamps by an adhesive that complies with the requirements outlined in Section 63, the Adhesive Test. Exception:When the construction of the lighting string is such that repl
10、acement of steady illuminating lamps with individual-fl ashing lamps is not possible, then no adhesive is required. 3) A minimum of half of the lighting string shall be steady-illuminating lamps and non- replaceable. The remaining lamps shall be permitted to be replaceable. These strings would be re
11、quired to be provided with the marking described in 117.3.8. d) Not less than 70 lamps connected in series with a minimum of half of the lamps in the lighting string being steady-illuminating provided that the string additionally comply with the Cascading Lamp Temperature test described in Section 8
12、3A. 8. Requirements for lighting sculptures consisting of multiple sections RATIONALE Based on the comments received on Topic 8 of the March 10, 2006 proposal, the UL 588 proposal has been revised. Responses to the comments have been posted within the Proposal Review Work Area. PROPOSAL 33.3 Lightin
13、g sculptures consisting of more than one section are allowed to be shipped unassembled when the lighting strings are affixed to the individual sections provided that suitable user assembly instructions are included in the instruction manual. 12. Increased current rating for motorized tree stands and
14、 lighting sculptures RATIONALE After the March 10, 2006 proposal was issued, Anthony Tassone of UL noted that the Topic 6 proposal to revise tree stand to product also applies to Topic 12 but had been inadvertently omitted. The UL 588 proposal has been revised to correct this oversight. PROPOSAL 113
15、.3 A product other than a lighting string employing a polarized attachment plug shall not have a current rating that exceeds 3.5 A. Exception No. 1: A motorized tree stand product employing 16 AWG wire shall not have a current rating that exceeds 8 A. JULY 28, 2006SUBJECT 588-2- FOR INTERNAL UL OR C
16、SDS USE ONLY NOT FOR OUTSIDE DISTRIBUTION Exception No. 2: A lighting sculpture that is constructed such that each string is not connected to the load fi tting of another string and is provided with a Seasonal Use Cord Set meeting the requirements described in Supplement SB of the Standard for Cord
17、Sets and Power Supply Cords, UL 817, shall not have a current rating that exceeds 8 A. 14. Addition of requirements for lighting strings intended for use on a patio umbrella RATIONALE Based on the comments received on Topic 14 of the March 10, 2006 proposal, the UL 588 proposal has been revised. Res
18、ponses to the comments have been posted within the Proposal Review Work Area. PROPOSAL 28.6 Series-connected strings intended for use installation on the ribs or internal mechanism of a patio umbrella shall additionally comply with the cycling test described in Section 90A, when mounted as intended
19、in accordance with the installation instructions. 90A Decorative Lighting String Intended for Use on a Patio Umbrella 90A.1 A series lighting string intended for installation on a patio umbrella shall be capable of withstanding a minimum of 90 cycles of fl exing when tested as described in 90A.2. At
20、 the conclusion of the test, the device shall comply with the Dielectric Voltage-Withstand Test, Section 45. Breakage of the copper or insulation of the conductor is not acceptable. 90A.2 A sample of the lighting string shall be mounted as intended on a patio umbrella provided using the fasteners pr
21、ovided with the product in accordance with the user assembly instructions provided. The umbrella shall be opened and closed for a total of 90 complete cycles to simulate the opening and closing of the umbrella during normal use. During the test, the decorative lighting string shall not be energized.
22、 After the test, the Dielectric-Voltage Withstand Test is to be conducted between live parts and dead metal parts. 17. Revision to allow a light string that operates without bulbs in the sockets RATIONALE Based on the comments received on Topic 17 of the March 10, 2006 proposal, the UL 588 proposal
23、has been revised. Responses to the comments have been posted within the Proposal Review Work Area. PROPOSAL 123.8 A midget push-in type series, series-parallel connected lighting string that employs a construction that allows the string to operate without the lamps in place shall not include the fol
24、lowing statements or equivalent in the instruction manual or shown on any part(s) of the product and packaging: a) Picture or drawing depicting lamp(s) removed and the string in the lit condition; or b) Wording that implies the string can be still energized even with lamp(s) removed. Exception:A mid
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