1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 1424 Cables for Power-Limited Fire-Alarm CircuitsUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORI
2、ZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Cables for Power-Limited Fire-Alarm Circuits, UL 1424 Fourth Edition, Dated January 22, 2015 Summary of Topics The Fourth Edition of the Standard for Safety for Cables for Power-Limited Fire-Alarm Circ
3、uits, UL 1424, has been issued to reect the reaffirmation of the ANSI approval. No changes in requirements have been made. The revisions are substantially in accordance with Proposal(s) on this subject dated December 5, 2014. All rights reserved. No part of this publication may be reproduced, stored
4、 in a retrieval system, or transmitted in any form by any means, electronic, mechanical photocopying, recording, or otherwise without prior permission of UL. UL provides this Standard as is without warranty of any kind, either expressed or implied, including but not limited to, the implied warrantie
5、s of merchantability or tness for any purpose. In no event will UL be liable for any special, incidental, consequential, indirect or similar damages, including loss of prots, lost savings, loss of data, or any other damages arising out of the use of or the inability to use this Standard, even if UL
6、or an authorized UL representative has been advised of the possibility of such damage. In no event shall ULs liability for any damage ever exceed the price paid for this Standard, regardless of the form of the claim. Users of the electronic versions of ULs Standards for Safety agree to defend, indem
7、nify, and hold UL harmless from and against any loss, expense, liability, damage, claim, or judgment (including reasonable attorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronic Standard on the purchasers computer system. The requirements in this St
8、andard are now in effect, except for those paragraphs, sections, tables, gures, and/or other elements of the Standard having future effective dates as indicated in the note following the affected item. The prior text for requirements that have been revised and that have a future effective date are l
9、ocated after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. JANUARY 22, 2015 UL 1424 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JANUARY 22, 2015 UL 1424 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORI
10、ZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JANUARY 22, 2015 1 UL 1424 Standard for Cables for Power-Limited Fire-Alarm Circuits First Edition October, 1990 Second Edition April, 1996 Third Edition August, 2005 Fourth Edition January 22, 2015 This ANSI/UL Standard for Saf
11、ety consists of the Fourth Edition. The most recent designation of ANSI/UL 1424 as an American National Standard (ANSI) occurred on January 22, 2015. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page, or effective date information. Comments or proposals for
12、revisions on any part of the Standard may be submitted to UL at any time. Proposals should be submitted via a Proposal Request in ULs On-Line Collaborative Standards Development System (CSDS) at http:/. ULs Standards for Safety are copyrighted by UL. Neither a printed nor electronic copy of a Standa
13、rd should be altered in any way. All of ULs Standards and all copyrights, ownerships, and rights regarding those Standards shall remain the sole and exclusive property of UL. COPYRIGHT 2015 UNDERWRITERS LABORATORIES INC. ANSI/UL 1424-2010 (R2015)UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REP
14、RODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JANUARY 22, 2015 CABLES FOR POWER-LIMITED FIRE-ALARM CIRCUITS - UL 1424 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .5 2 Units of Me
15、asurement .7 3 References and Terms 7 CONSTRUCTION 4 Materials .7 5 Conductors .8 6 Metal Coating .10 7 Insulation .11 7.1 Material and application 11 7.2 Properties 11 7.3 Thicknesses 15 8 Coaxial and Optical-Fiber Members 22 9 Individual Covering .23 10 Electromagnetic Shield(s) 24 11 Binder(s) .2
16、5 12 Assembly of Multiple-Conductor Cable 25 13 Cable Jacket .27 14 Metal Covering .29 14.1 General .29 14.2 Smooth metal sheath .30 14.3 Welded and corrugated metal sheath .30 14.4 Extruded and corrugated metal sheath 31 14.5 Interlocked armor .32 15 Jacket over Metal Covering 33 PERFORMANCE 16 Con
17、tinuity Test of Conductors and Shields .33 17 D-C Resistance Test of Copper Conductors 34 18 Cold Bend Test of Insulation .38 19 Cold Bend Test of Complete Cable .40 20 Smoke and Fire Testing of Type FPLP Cable 41 21 Fire Testing of Type FPLR Cable .41 22 VW-1 (Vertical-Specimen) Flame Test .41 23 A
18、lternative Vertical-Tray Flame Tests on Type FPL Cable .42 23.1 General .42 23.2 UL test 42 23.3 FT4/IEEE 1202 Test 43 24 Sunlight Resistance Test 43 25 Spark Test after Insulating .43 26 Dielectric Voltage-Withstand Test .44 27 Test for Insulation Resistance at 60.0F (15.6C) .44 28 Long Term Insula
19、tion-Resistance Test in Water 48 29 Test Procedure for Determining the Multiplying-Factor Column for Adjusting Insulation Resistance .49 30 Shrinkback Test on Thermoplastic Insulation .51 JANUARY 22, 2015 CABLES FOR POWER-LIMITED FIRE-ALARM CIRCUITS - UL 1424 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED
20、FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 31 Crushing Resistance Test of Insulation 53 32 Crushing Test for Cable Marked for Direct Burial .54 33 Mechanical Water Absorption Test of Insulation in Direct-Burial Cable 55 34 Copper Sulphate Test of Zinc Coating on Steel Strip
21、for and from Interlocked Steel Armor . .56 35 Abrasion Resistance Test of Overall Jacket on Cable Consisting of a Single Coaxial Member .58 36 Tension Test of Interlocked Armor 61 37 Flexibility Test for Cable Having Interlocked Armor or a Smooth or Corrugated Metal Sheath .63 38 Circuit Integrity .
22、64 39 Durability Test of Ink Printing .65 40 Limited Combustible 66 41 Breaking Strength Test 66 MARKINGS 42 Intervals .66 43 Coding 66 44 Information on or in the Cable 67 45 Information on the Tag, Reel, or Carton .70 46 Multiple Markings .71 47 Date of Manufacture 72 JANUARY 22, 2015 CABLES FOR P
23、OWER-LIMITED FIRE-ALARM CIRCUITS - UL 1424 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover 60 250C (140 482F) single- and multiple-conductor cables for use as xed wiring within buildings (so
24、me are also marked for direct burial) principally for power-limited re-alarm circuits as described in Article 760 and other applicable parts of the National Electrical Code (NEC). Cables covered by these requirements are: a) Type FPLP (plenum cable), b) Type FPLR (riser cable), and c) Type FPL (cabl
25、e for other than plenum and riser uses in general and in trays), and Power- limited re-alarm circuit cable (cable for limited use). 1.2 The cables covered in these requirements are rated for 300 volts but are not so marked. See 44.1(h). 1.3 A cable that contains one or more electromagnetic shields m
26、ay be surface marked or have a marker tape to indicate that it is shielded . A cable that contains one or more optical-ber members has -OF supplementing the type letters and is marked in accordance with 45.1(d). A cable may consist of or contain one or more coaxial members. 1.4 The overall jacket on
27、 a cable that has sun res or sunlight resistant in a surface marking or on a marker tape complies with a 720-h sunlight-resistance test. 1.5 A cable that has dir bur , direct burial ,o rfor direct burial in a surface marking or on a marker tape complies with a 1000-lbf crushing test. Direct-burial c
28、able with wire armor, a metal braid, interlocked metal armor, or a smooth or corrugated metal sheath has a jacket over the metal covering. 1.6 Smoke and re considerations are as follows for the cables covered in these requirements: a) TYPE FPLP CABLE Cable that is intended for installation in accord
29、ance with section 760- 154(A) of the National Electrical Code (ANSI/NFPA 70) in a duct, plenum, or other space used to transport environmental air without the cable being enclosed in a raceway in that space is to be tested for smoke and ame characteristics in accordance with the National Fire Protec
30、tion Association Standard Method of Test for Flame Travel and Smoke of Wires and Cables for Use in Air-Handling Spaces, ANSI/NFPA 262. A cable that complies exhibits a maximum ame- propagation distance that is not greater than 5 ft, 0 inch or 152 cm, a peak optical density of smoke produced of 0.50
31、or less (32 percent light transmission), and an average optical density of smoke produced of 0.15 or less. b) TYPE FPLR CABLE Cable that is intended for use in vertical runs in a shaft, or for installations in which the cable penetrates more than one oor, as specied in section 760- 154(B) of the Nat
32、ional Electrical Code ANSI/NFPA 70. This cable is to be tested for ame- propagation characteristics in accordance with the Standard Test for Flame Propagation Height of Electrical and Optical-Fiber Cables Installed Vertically in Shafts, UL 1666. A cable that complies has a ame-propagation height les
33、s than 12 ft, 0 inch or 366 cm and temperatures are 850.0F (454.4C) or less at a height of 12 ft, 0 inch or 366 cm. c) TYPE FPL CABLE Type FPL cable complies with a 70,000 Btu/h (20.5 kW) vertical-tray ame test. The cable manufacturer chooses one of the following tests: JANUARY 22, 2015 CABLES FOR P
34、OWER-LIMITED FIRE-ALARM CIRCUITS - UL 1424 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 1) THE UL TEST REFERENCED IN 23.2.1 This paragraph applies the test method described as the UL Flame Exposure (smoke measurements are not applicable)
35、 in the Standard Vertical-Tray Fire-Propagation and Smoke-Release Test for Electrical and Optical-Fiber Cables, UL 1685, to cable that is surface marked or designated by a marker tape as FPL . A cable of a given construction shall not exhibit char that reaches the upper end of any specimen (a maximu
36、m of 8 ft, 0 inch or 244 cm). 2) THE FT4/IEEE 1202 TEST REFERENCED IN 23.3.1 This paragraph applies the test method described as the FT4/IEEE 1202 Type of Flame Exposure (smoke measurements are not applicable) in the Standard Vertical-Tray Fire-Propagation and Smoke-Release Test for Electrical and O
37、ptical-Fiber Cables, UL 1685. This test differs from the UL tests in loading (more cables are used, with small cables bundled, and the spacing between cables or bundles is limited), burner angle, and failure criterion. For compliance, this test damages less than 150 cm (59 inches) of cable. A cable
38、that complies either is not marked or it bears the designation FT4/IEEE 1202 or FT4 legible on or through the outer surface or on a marker tape see marking in 44.1(i). d) POWER-LIMITED FIRE-ALARM CIRCUIT CABLE Cable that is surface marked or designated by a marker tape as power-limited re-alarm circ
39、uit cable or as power ltd re alarm cable complies with the VW-1 vertical-specimen ame test. The cable is not marked VW-1 . 1.7 As noted in 1.8, power-limited re-alarm circuit cable is used with protection such as raceway. All other cables covered in these requirements are not required by the NEC to
40、be used in raceway and are capable of use without the physical protection of raceway but may be pulled into conduit or installed in other raceway. 1.8 Power-limited re-alarm circuit cable is used: a) In nonconcealed spaces in which the exposed length of cable does not exceed 10 ft or 3.05 m, and b)
41、In raceway. 1.9 These requirements do not cover cables that contain conductors for electric-light, power, or Class 1 circuits. These requirements do not cover cables for Class 3 or Class 2 power-limited circuits (see the Standard for Power-Limited Circuit Cables, UL 13), communications cables (see t
42、he Standard for Communications Cables, UL 444), or cables for non-power-limited re-alarm circuits (NPLF types). 1.10 These requirements do not cover the optical or other performance of any optical-ber member or group of such members. See 8.3. JANUARY 22, 2015 CABLES FOR POWER-LIMITED FIRE-ALARM CIRC
43、UITS - UL 1424 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 2 Units of Measurement 2.1 In addition to being stated in the inch/pound units that are customary in the USA, each of the requirements is also stated in units that make the requ
44、irement conveniently usable in countries employing the various metric systems (practical SI and customary). Equivalent although not necessarily exactly identical results are to be expected from applying a requirement in USA or metric terms. Equipment calibrated in metric units is to be used when a r
45、equirement is applied in metric terms. 3 References and Terms 3.1 Wherever the designation UL 1581 is used in this wire standard, reference is to be made to the designated part(s) of the Reference Standard for Electrical Wires, Cables, and Flexible Cords, UL 1581. Whenever the designation “UL 2556”
46、is used in this standard, reference is to be made to the designated parts of the Standard for Wire and Cable Test Methods, UL 2556. 3.2 Any undated reference to a code or standard appearing in the requirements of this standard shall be interpreted as referring to the latest edition of that code or s
47、tandard. 3.3 Nylon designates a thermoplastic material whose characteristic constituent is a polyamide formed by the condensation of dibasic organic acids and diamines. Nylon used as a covering is unlled and without reinforcement but may contain stabilizers, ame retardants, pigment, and/or other add
48、itives. 3.4 PBT designates a thermoplastic polyester material whose characteristic constituent is polybutylene terephthalate. PBT used as a covering is unlled and without reinforcement but may contain ame retardants, pigment, and/or other additives. CONSTRUCTION 4 Materials 4.1 Each material used in
49、 a cable shall be compatible with all of the other materials used in the cable. 4.2 The power-limited re-alarm circuit cables covered in these requirements shall comply in all respects with the applicable requirements for construction details, test performance, and markings. JANUARY 22, 2015 CABLES FOR POWER-LIMITED FIRE-ALARM CIRCUITS - UL 1424 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITH
