ANSI UL 1425-2015 UL Standard for Safety Cables for Non-Power-Limited Fire-Alarm Circuits (Third Edition)《非动力限制火灾报警电路安全标准》.pdf

1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 1425 Cables for Non-Power-Limited Fire-Alarm CircuitsUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUT

2、HORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Cables for Non-Power-Limited Fire-Alarm Circuits, UL 1425 Third Edition, Dated January 26, 2015 Summary of Topics The Third Edition of the Standard for Safety for Cables for Non-Power-Limited Fire-

3、Alarm Circuits, UL 1425, 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 reproduc

4、ed, stored 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

5、 warranties 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, e

6、ven if UL 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 def

7、end, indemnify, 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

8、in this Standard 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

9、date are located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. JANUARY 26, 2015 UL 1425 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JANUARY 26, 2015 UL 1425 tr2 No Text on This PageUL COPYRIGHTED MATERIAL N

10、OT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JANUARY 26, 2015 1 UL 1425 Standard for Cables for Non-Power-Limited Fire-Alarm Circuits First Edition January, 1998 Second Edition October, 2005 Third Edition January 26, 2015 This ANSI/UL Standard for Safety consists

11、 of the Third Edition. The most recent designation of ANSI/UL 1425 as an American National Standard (ANSI) occurred on January 26, 2015. ANSI approval for a standard does not include the Cover Page, Transmittal Pages, Title Page, or effective date information. Comments or proposals for revisions on

12、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 Standard should be

13、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 1425-2010 (R2015)UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR

14、DISTRIBUTION WITHOUT PERMISSION FROM UL JANUARY 26, 2015 CABLES FOR NON-POWER-LIMITED FIRE-ALARM CIRCUITS - UL 1425 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 Measurement

15、 .7 3 References .7 CONSTRUCTION 4 Materials .7 5 Circuit and Grounding Conductors 7 6 Metal Coating of Conductors .9 7 Insulation .10 7.1 General 10 7.2 Conductors other than NEC wires .10 7.3 NEC wires 15 8 Electromagnetic Shields 16 9 Optical-Fiber Members .17 10 Binders 17 11 Core Wrap .18 12 As

16、sembly of the Cable 18 13 Overall Cable Jacket 18 13.1 Material, application, and thicknesses .18 13.2 Thicker jacket 20 13.3 Cable temperature rating 20 14 Metal Covering (Armor) 21 14.1 General .21 14.2 Smooth metal sheath .21 14.3 Welded and corrugated metal sheath .22 14.4 Extruded and corrugate

17、d metal sheath 23 14.5 Interlocked armor .23 15 Jacket over Armor 25 PERFORMANCE 16 Continuity Test of Conductors and Shields .25 17 D-C Resistance Test of Conductors .26 17.1 Requirements 26 17.2 General method 27 17.3 Kelvin-bridge referee method 29 18 Heat Shock Test 30 19 Deformation Test .30 20

18、 Cold Bend Test of the Insulation 32 21 Cold Bend Test of the Complete Cable 33 22 Smoke and Flame Testing of NPLFP Cables .34 23 Flame Testing of Riser Cables .34 24 Alternative Vertical-Tray Flame Tests of General-Purpose Cables 35 24.1 Choice of test by the manufacturer .35 24.2 Changes in constr

19、uction 35 24.3 UL test 35 24.4 FT4/IEEE 1202 test 36 JANUARY 26, 2015 CABLES FOR NON-POWER-LIMITED FIRE-ALARM CIRCUITS - UL 1425 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 25 Sunlight-Resistance Test 36 26 Alternative Spark and Dielect

20、ric Voltage-Withstand Tests 37 26.1 Choice of test by the manufacturer .37 26.2 Spark test of insulated conductors before cable assembly .37 26.3 Dielectric voltage-withstand test between insulated conductors after cable assembly .37 27 Test for Insulation Resistance at 60.0F (15.6C) .38 28 Test Pro

21、cedure for Determining the Multiplying-Factor Column for Adjusting Insulation Resistance .40 29 Crushing Test of Cable Marked for Direct Burial 42 30 Mechanical Water Absorption Test of Insulation in Direct-Burial Cable 43 31 Long Term Insulation Resistance Test in Water 45 32 Copper Sulphate Test o

22、f Zinc Coating on Steel Strip for and from Interlocked Steel Armor . .45 33 Abrasion Resistance Test of Overall Jacket 47 34 Tension Test of Interlocked Armor 49 35 Flexibility Test of Cable Having Interlocked Armor or a Smooth or Corrugated Metal Sheath .52 36 Durability Test of Ink Printing .53 37

23、 Circuit Integrity .53 38 Limited Combustible 53 MARKINGS 39 Intervals .53 40 Coding 54 41 Information on or in the Cable 54 42 Information on the Tag, Reel, or Carton .57 43 Date of Manufacture 58 44 Multiple Markings .58 JANUARY 26, 2015 CABLES FOR NON-POWER-LIMITED FIRE-ALARM CIRCUITS - UL 1425 4

24、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 This Standard states the construction, test, and marking requirements covering the safety of electrical and electrical/optical-ber cables rated 60C to 250C and intended

25、 for 150-volt and lower-potential non-power-limited circuits that are controlled and powered by a re-alarm system. These cables are for installation in buildings as specied in Article 760 and other applicable parts of the National Electrical Code (NEC), NFPA 70. Cables covered by these requirements

26、are: a) Type NPLFP These cables are for installation in other spaces used for environmental air See NEC 300-22(c). b) Type NPLFR These cables are for installation in vertical runs in a shaft or for installation in vertical runs that penetrate more than one oor. c) Type NPLF These cables are for gene

27、ral-purpose re-alarm use in buildings. General purpose does not include use as plenum or riser cable. 1.2 These cables contain two or more insulated circuit conductors with or without one or more insulated or bare equipment-grounding conductor(s). Each insulated circuit and grounding conductor is ra

28、ted for 600 volts. These cables do not contain any coaxial members. These cables are rated for 150 volts and are so marked. 1.3 Armored cables are covered by interlocked metal strip or a smooth or corrugated metal sheath with or without a jacket over the armor. Cables for encasement in concrete, mor

29、tar, other masonry, plaster, or similar construction have metal armor and a jacket over the armor. Cables for direct burial in the earth (see markings in 1.8) are subject to a 1000-pound crushing test. Cables for direct burial are not required to be armored. Cables for direct burial that are armored

30、 have a jacket over the armor. All other cables (unarmored, at or round) have an overall jacket. 1.4 Cables of materials that qualify for temperatures above 60C (140F) are marked with a temperature rating. Temperature marking is not required for cables that qualify for a temperature rating of 60C (1

31、40F). 1.5 Cables that contain one or more electromagnetic shields (see 8.1 8.3 regarding constructions) are not required to be marked to indicate the presence of the shielding. A shielded cable that is marked has shielded on the tag and either on the overall cable jacket or legible through the jacke

32、t. 1.6 Cables that qualify for exposure to sunlight (720-hour sunlight-resistance test see 25.1) have sun res or sunlight resistant on the tag and either on the overall cable jacket or legible through the jacket. 1.7 Cables that qualify for burial directly in the earth (1000-pound crushing test see

33、29.1) have dir bur , direct burial ,o rfor direct burial on the tag and either on the overall cable jacket or legible through the jacket. Each insulated circuit and grounding conductor in direct-burial cables is insulated for wet locations (see 7.3.1 and 30.1 30.8). JANUARY 26, 2015 CABLES FOR NON-P

34、OWER-LIMITED FIRE-ALARM CIRCUITS - UL 1425 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 1.8 A cable that contains one or more optical-ber members has “OF “ supplementing the type letters and is marked in accordance with 42.1(c). 1.9 Thes

35、e requirements do not cover cables that contain only optical bers. Optical-ber cables without electrical conductors are covered in the Standard for Optical Fiber Cable, UL 1651. 1.10 These requirements do not cover cables for electric-light, power, control, Class 1, Class 2, or Class 3 circuits. 1.1

36、1 These requirements do not cover cables for power-limited re-alarm circuits (see UL 1424). 1.12 Smoke and ame tests are as follows for the cables covered in these requirements: a) PLENUM CABLES All Type NPLFP cables are tested for smoke and ame characteristics as specied in Smoke and Flame Testing

37、of Plenum Cables, Section 22, which references the National Fire Protection 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 f

38、t, 0 inch or 152 cm, a peak optical density of smoke produced of 0.50 or less (32 percent light transmission), and an average optical density of smoke produced of 0.15 or less. b) RISER CABLES Jacketed Type NPLFR cables are tested for ame-propagation characteristics as specied in Flame Testing of Ri

39、ser Cables, Section 23, which references the Standard Test for Flame-Propagation Height of Electrical and Optical-Fiber Cables Installed Vertically in Shafts, UL 1666. A cable that complies exhibits a ame-propagation height under 12 ft, 0 inch or 366 cm and attains a temperature no higher than 850.0

40、F (454.4C) at a height of 12 ft, 0 inch or 366 cm. c) GENERAL-PURPOSE CABLES Jacketed Type NPLF cables comply with one of the two 70,000 Btu/h (20.5 kW) vertical-tray ame tests specied in Alternative Vertical-Tray Flame Tests of General-Purpose Cables, Section 24. The cable manufacturer chooses one

41、of the following tests: 1) The UL test referenced in 24.1.2 24.3.3. These paragraphs apply the test method described as the UL Flame Exposure (smoke measurements are not applicable) in the Standard for Vertical-Tray Fire-Propagation and Smoke-Release Test for Electrical and Optical-Fiber Cables, UL

42、1685. 2) The FT4/IEEE 1202 test referenced in 24.1.2 and 24.4.1. These paragraphs apply the test method described as the FT4/IEEE 1202 Type of Flame Exposure (smoke measurements are not applicable) in the Standard for Vertical-Tray Fire-Propagation and Smoke-Release Test for Electrical and Optical-F

43、iber Cables, UL 1685. This test differs from the UL test in loading (a greater number of cable lengths are used, with small cables bundled, and the spacing between cables or bundles is limited), burner angle, and failure criterion. A cable that complies is eligible to be marked FT4/IEEE 1202 or FT4

44、on the surface or on a marker tape as indicated in 41.1(i). JANUARY 26, 2015 CABLES FOR NON-POWER-LIMITED FIRE-ALARM CIRCUITS - UL 1425 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 i

45、n the inch/pound units that are customary in the USA, each of the requirements is also stated in units that make the requirement conveniently usable in countries employing the various metric systems (practical SI and customary). Equivalent although not exactly identical results are to be expected fr

46、om applying a requirement in USA or metric terms. Equipment calibrated in metric units is to be used when a requirement is applied in metric terms. 3 References 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 Stan

47、dard for Electrical Wires, Cables, and Flexible Cords, UL 1581. 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 standard. CONSTRUCTION 4 Materials 4.1 Each material in a cable shall

48、 be compatible with all of the other materials in the cable. 4.2 Cables for non-power-limited re-alarm circuits shall comply in all respects with the applicable requirements for construction details, test performance, and markings. 5 Circuit and Grounding Conductors 5.1 Each circuit and grounding co

49、nductor shall be of soft-annealed copper that complies with the American Society for Testing and Materials Standard Specication for Soft or Annealed Copper Wire, ASTM B 3. See Electromagnetic Shields, Section 8, concerning drain wires (copper). 5.2 Each circuit and grounding conductor shall be round. 5.3 Each circuit and grounding conductor shall be solid or stranded. A stranded conductor shall consist of round strands with a right- or left-hand d