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1、FOR INTERNAL UL OR CSDS USE ONLY NOT FOR OUTSIDE DISTRIBUTION Subject 444 July 14, 2006 SUMMARY OF TOPICS The following changes in requirements are being proposed: 1. Revisions to Clause 6.13, Cold Impact of Outdoor Type CMX Cable, to address more current and common test methodology. 2. Addition of
2、new Clauses 6.22 and 7.3.8 indicating marking and test requirements for communication wires and cables located outdoors, and exposed to direct sunlight. STP BALLOTS DUE: AUGUST 28, 2006 COMMENTS DUE: AUGUST 28, 2006 For your convenience in review, proposed additions to existing requirements are show
3、n underlined and proposed deletions are shown lined-out. 1. Revisions to Clause 6.13, Cold Impact of Outdoor Type CMX Cable, to address more current and common test methodology. RATIONALE Proposal submitted by Jean Baer, Superior Essex. An alternate test method to the present Cold Impact Test for Ou
4、tdoor Type CMX Cable contained in UL 444 (Clause 6.13) is proposed. The proposed text (1) addresses the performance intent of the current test; (2) more realistically simulates the stapling process; (3) recognizes the inherent differences in performance between the cable designs which were initially
5、 evaluated, and formed the basis of the requirement, and those cable designs which are now commonly required and in use; (4) refl ects a test methodology that has been utilized in the industry for many years and which is contained in ICEA Standard S-100-685 Clause 7.3, an American National Standard;
6、 and (5) addresses the performance capabilities of current designs, which are ubiquitous in the marketplace, and which continue to perform satisfactorily in the fi eld at both normal and low temperatures. See attached for supporting documentation regarding the rationale. PROPOSAL 6.13.1 After being
7、conditioned for 4 h in circulating air that is precooled to and maintained at a temperature of 10 2C, the jacket and insulation of fi nished Type CMX cable that is smaller in diameter than 6.35 mm (0.25 in) and is surface-marked or designated by a marker tape as “outdoor” shall not crack when specim
8、ens of the complete cable are subjected to the energy of a free-falling fl at-faced circular weight that impacts the cable at the point at which the cable is laid on a fl at, horizontal oak or equivalent steel anvil. The test shall be conducted and the results evaluated as described in Clauses 6.13.
9、2 6.13.10. FOR INTERNAL UL OR CSDS USE ONLY NOT FOR OUTSIDE DISTRIBUTION 6.13.2 The impact anvil shall consist of a 200 mm (8 in) section of 2 x 4 lumber actual cross section measures 38 mm by 89 mm (1-1/2 in by 3-1/2 in) consisting of the following or its investigated equivalent, with the grain run
10、ning lengthwise: Clear-grade red or white oak having a specifi c gravity of 0.57 (green) to 0.67 (dry) steel plate having a length of 150 mm (6 in), a width of 90 mm (3-1/2 in), and a thickness of 9.5 mm (3/8 in). A steel ridge 2.4 mm (3/32 in) in height and 1.6 mm (1/16 in) in width shall be positi
11、oned in the centre of the plate, perpendicular to the length of the plate, and shall be of the same width as the plate. The two upper edges of the ridge shall have a 0.18 mm (0.007 in) radius. See Figure 3. The anvil shall be secured to a concrete fl oor, the framework of the building, or another so
12、lid support. 6.13.3 The impact energy shall be provided by a weight in the form of a circular steel cylinder having a diameter of 25 mm (1.0 in) and a fl at impact face that is perpendicular to the longitudinal axis of the weight and has rounded edges. The weight of 0.3 0.11 kg (2/3 1/4 lb) shall be
13、 76.2 25 mm (3.0 1.0 in) long to enable the weight, when dropped from the height indicated in Clause 6.13.8, to supply an energy of 2.7 0.11 J (24 3 in lbf) to the cable. 6.13.6 At the conclusion of the 4 h of cooling, the impact weight shall be supported with its lower face horizontal. A vertical l
14、ine through the centres of gravity of the impact weight and the stationary anvil shall be coincident with a vertical line through the dimensional centre of the lower face of the impact weight and the dimensional centre of the upper face of the stationary anvil. A set of rails or other vertical guide
15、(s) shall constrain the impact weight and keep its lower face horizontal while the weight is falling and after it has struck the cable. The rails or other guide(s) shall not interfere with the free fall of the impact weight. A mechanism shall be provided at the top of the guide(s) for releasing the
16、impact weight to fall freely through a height of 915 305 mm (36 12 in) and strike the cable. A means shall also be provided to keep the weight from striking the cable more than once during each drop. 6.13.7 The ten test specimens of the cable shall be individually removed from the cold chamber and t
17、ested in succession, each within 15 s of its removal from the chamber. For the fi rst specimen, the impact weight shall be secured several cable diameters above the anvil, and the specimen shall be placed and secured on the anvil with the longitudinal axis of the specimen horizontal, parallel to the
18、longitudinal axis of the oak steel anvil (with the grain perpendicular to the ridge), and in the vertical plane containing the coincident vertical lines mentioned in Clause 6.13.6. 6.13.8 The position of the impact weight shall be adjusted to place the lower face of the weight 915 305 mm (36 12 in)
19、above the upper surface of the fi rst specimen of the cable. The impact weight shall be released from this height, shall fall freely in the guide(s), shall strike the specimen once, and shall then immediately be raised to and secured at the 915 305 mm (36 12 in) height. Each of the remaining nine sp
20、ecimens shall be tested likewise from this height. This is generated text for fi gtxt. JULY 14, 2006SUBJECT 444-2- FOR INTERNAL UL OR CSDS USE ONLY NOT FOR OUTSIDE DISTRIBUTION Figure 3 Cold impact anvil (See Clause 6.13.2) JULY 14, 2006SUBJECT 444-3- FOR INTERNAL UL OR CSDS USE ONLY NOT FOR OUTSIDE
21、 DISTRIBUTION 2. Addition of new Clauses 6.22 and 7.3.8 indicating marking and test requirements for communication wires and cables located outdoors, and exposed to direct sunlight. RATIONALE Proposal submitted by Gerald Dorna, Belden CDT Inc. Communications wires and cables (types CM, CMG, CMR, and
22、 b) A 450 5 gram (1 lb 1%) weight having a layer of craft felt approximately 1.2 mm (0.05 in) thick securely attached to a machined fl at surface with dimensions of 25 x 50 mm (1 x 2 in). Note:For the purpose of this test, any commerically available type of felt consistency may be used. 7. For Preli
23、minary Review Only: Revision to paragraph 6.20 and Table 3A to provide for Cross-connect Wire (Cable). RATIONALE Proposal submitted by Tom Guida, UL. The size range for Cross-connect Wire (Cable) is not defi ned in the standard. In practice, the wire sizes used are the same as for multi-conductor ca
24、bles. Therefore the size range for the deformation test has been corrected and Cross-connect Wire (Cable) added to Table 3A. 6.20 Deformation test for cross-connect wire The test method shall be as described in the applicable clause in CSA Standard C22.2 No. 0.3 and in Section 560 of UL 1581. The in
25、sulation shall be aged in an air oven at 100.0 1.0C (212.0 1.8F). Conductor sizes 12 16 20 AWG shall be subjected to a load of 0.40 kgf or 3.92 N (0.88 lbf). Conductor sizes 21 30 AWG shall be subjected to a load of 0.25 kgf or 2.45 N (0.55 lbf). The maximum decrease in insulation thickness shall be
26、 50 per cent. A minimum of three specimens for each insulation type shall be tested. In the event of test results that do not comply, an additional minimum of six specimens shall be tested, all of which shall comply with the requirement. MAY 22, 2006SUBJECT 444-5- FOR INTERNAL UL OR CSDS USE ONLY NO
27、T FOR OUTSIDE DISTRIBUTION Table 3A Conductor metal and application (See Clause 4.1.4) Conductor metalConductor size (AWG)Application Copper30-16Multiple-conductor or Coaxial Cable Copper30-16Cross-connect Wire (Cable) Copper15-6Coaxial or Audio Cable Copper-clad steel30-6Coaxial Cable only 8. For P
28、reliminary Review Only: Addition of insulation or jacket material types MFA and FRPP to Tables 8 and 9, and the removal of the exclusion of certain FRPE insulation and jacket compounds from testing in Table 9. RATIONALE Proposal submitted by Tom Guida, UL. MFA and PFA are similar material types, and
29、 their physical properties are shown in the corresponding table of UL 1581. MFA has been used on these cables and is therefore proposed for addition to Tables 8 and 9. It is also proposed to add FRPP to Tables 8 and 9. FRPE is used in these cables, has the same physical properties as the non-fl ame-
30、retarded PP, and is identifi ed in other standards for power limited cables. With regards to the removal of the limitation of the reduced separation speed to only high density FRPE insulation types in the Notes to Table 8, all FRPE insulation and jacket compounds should be tested at 50 5 mm/min (2.0
31、 0.2 in/min). This conforms to the physical property test requirements for FRPE in Table 50.133 of UL 1581. FRPE compounds are fi lled and therefore it is not possible to determine the density of the PE component within the compound. PROPOSAL Table 8 Minimum unaged properties of insulations and jack
32、ets (See Clauses 4.9.7, 6.3.2.1, and 6.8.1.) Material Ultimate elongation % Tensile strength MPalbf/in2 ECTFE ETFE10034.55000 FEP20017.22500 FRPE1008.31200 HDPE30016.52400 LDPE3509.71400 MFA, PFA20017.22500 PP, FRPP15020.73000 PTFE17527.64000 PVC10013.82000 PVDF10024.13500 SRPVC10020.73000 XL15010.3
33、1500 MAY 22, 2006SUBJECT 444-6- Table 8 Continued on Next Page FOR INTERNAL UL OR CSDS USE ONLY NOT FOR OUTSIDE DISTRIBUTION Table 8 Continued Material Ultimate elongation % Tensile strength MPalbf/in2 XLPO15013.82000 Notes: 1)All materials shall be tested at 50025 mm/min (201 in/min) except ECTFE,
34、ETFE, FRPE with a density of 930 kg/m3 or higher, HDPE, PP, PVDF, and SRPVC. These materials shall be tested at 505 mm/min (2.00.2 in/min). 2) An insulation or a jacket of a material other than one of those mentioned in the fi rst column of this table may be used, provided that it has been evaluated
35、 to verify acceptability for use in the intended application. Table 9 Heat-aged properties of insulation and jackets for ratings 75 250C (See Clauses 4.9.7, 6.3.2.2, 6.3.2.4, 6.8.3, and 6.9.2, 6.19, and 6.21.1.) Rating (C) Jacket or insulation Time (days) Temperature (C) Min. retention (%) of unaged
36、 ElongationTensile strength 75FRPE21007575 HDPE21007575 LDPE21007575 PP, FRPP101007070 PVC101005085 SRPVC71137070 XL71137070 90PVC71215085 SRPVC71217070 XL71217070 105XLPO71367085 PVC71365085 SRPVC71367070 125PVDF7158Flex test on mandrel or 30136 150ECTFE ETFE71807585a PVDF601585050 200FEP72327575 M
37、FA, PFA42608585 250PTFE602608585 MFA, PFA72878585 a Or 34.5 MPa (5000 lb/in2) minimum. Note: An insulation or a jacket of a material other than one of those mentioned in the fi rst column of this table may be used, provided that it has been evaluated to verify acceptability for use in the intended a
38、pplication. 9. For Preliminary Review Only: Editorial corrections to provide clarity and improved wording. RATIONALE Proposal submitted by Tom Guida, UL. The following editorial corrections as described are proposed. Revision to paragraph 1.2 to include the designation NFPA 70 in reference to the Na
39、tional Electrical Code. MAY 22, 2006SUBJECT 444-7- FOR INTERNAL UL OR CSDS USE ONLY NOT FOR OUTSIDE DISTRIBUTION Deletion of the NOTE to paragraph 2.12 regarding in-line packaging. This information appears in Section 5.3, Dielectric Strength, and is inappropriate as part of a defi nition in Section
40、2, Defi nitions. Revision to Section 3.1, Reference publications, to remove the dates of referenced publications. The Clause reference in paragraph 4.4.2 has been reworded to provide clarity. An editorial correction to the heading of Clause 4.4.4. The fi nal sentence of the last paragraph of Clause
41、6.3.1 already appears in that Clause. The sentence is instead being placed at the end of paragraph 6.3.2.1. Revision to paragraph 6.14.1 to specify Appendix A in reference to the NFPA 262 Standard. Appendix A is explanatory material and is referenced to make clear that the requirements stated apply
42、to Type CMP cables. The referenced requirements are the same as those previously required in UL 910. An editorial correction to Clause 7.3.7 to correct singular/plural agreement. Correction of an incorrect reference in paragraph 8.1.2. The fi nal two paragraphs of paragraph 8.1.5 have been determine
43、d to be unrelated to the fi rst paragraph, and have been separated and assigned their own paragraph number 8.1.5A. The revision to paragraph 8.1.7 conforms the marking requirement to the construction requirement in paragraph 4.1.4 and Table 3A. PROPOSAL 1.2 This standard applies to communications ca
44、bles that are intended primarily for installation in accordance with Section 60 of the Canadian Electrical Code (CEC), Part I, and Article 800 of the National Electrical Code (NEC), NFPA 70. They are rated for 300 V applications but are not so marked. 2.12 MANUFACTURING AND PRODUCTION TEST A test pe
45、rformed on a length of wire before further processing and/or on a completed cable before shipment. Note:Where in-line packaging is used, and where conformity of the packaged product can be demonstrated, the tests may be performed on a master reel of the assembled cable prior to application of the fi
46、 nal jacket. 3.1 Reference publications Where reference is made to other publications, such reference shall be considered to refer to the latest edition and all amendments published to that edition up to the time when the referencing standard is approved. Any undated reference to a code or standard
47、appearing in the requirements of this standard shall be interpreted as referring to the latest edition of that code or standard. CSA Standards C22.1-2002, Canadian Electrical Code, Part I; MAY 22, 2006SUBJECT 444-8- -,-,- FOR INTERNAL UL OR CSDS USE ONLY NOT FOR OUTSIDE DISTRIBUTION CAN/CSA-C22.2 No
48、. 0-M91 (R1997), General Requirements Canadian Electrical Code, Part II; C22.2 No. 0.3-01, Test Methods for Electrical Wires and Cables UL Standards UL 1581-2001, Reference Standard for Electrical Wires, Cables, and Flexible Cords; UL 1666-2000, Test for Flame Propagation Height of Electrical and Op
49、tical-Fiber Cables Installed Vertically in Shafts; UL 1685-1997, Vertical-Tray Fire-Propagation and Smoke-Release Test for Electrical and Optical-Fiber Cables. ANSI1Standard Z136 Series-1996/2000, Safe Use of Lasers. ANSI/NFPA2Standard 70-2002, National Electric Code. ASTM3Standards B 33-00, Specifi cation for Tinned Soft or Annealed Copper Wire for Electrical Purposes; B 189-95, Specifi cation for Lead-Coated and Lead-Alloy-Coated Soft Copper Wire for Electrical Purposes; B 286-95, Specifi cation for
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