UL 1685-2015 UL Standard for Safety Vertical-Tray Fire-Propagation and Smoke-Release Test for Electrical and Optical-Fiber Cables (Fourth Edition).pdf

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1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 1685 Vertical-Tray Fire-Propagation and Smoke-Release Test for Electrical and Optical-Fiber CablesUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERM

2、ISSION FROM ULUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Vertical-Tray Fire-Propagation and Smoke-Release Test for Electrical and Optical-Fiber Cables, UL 1685 Fourth Edition, Dated July 7, 2015 SUMMARY OF TOP

3、ICS: This new edition of ANSI/UL 1685 is being issued to reaffirm approval as an American National Standard. No changes in requirements are involved. The new and/or revised requirements are substantially in accordance with Proposal(s) on this subject dated May 15, 2015. All rights reserved. No part

4、of this publication may be reproduced, 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, includ

5、ing but not limited to, the implied 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 th

6、e inability to use this Standard, even 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 UL

7、s Standards for Safety agree to defend, 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

8、 computer system. The requirements 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 revise

9、d and that have a future effective date are located after the Standard, and are preceded by a SUPERSEDED REQUIREMENTS notice. JULY 7, 2015 UL 1685 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JULY 7, 2015 UL 1685 tr2 No Text on This Pa

10、geUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JULY 7, 2015 1 UL 1685 Standard for Vertical-Tray Fire-Propagation and Smoke-Release Test for Electrical and Optical-Fiber Cables First Edition July, 1992 Second Edition February, 1997 Third

11、Edition April, 2007 Fourth Edition July 7, 2015 This ANSI/UL Standard for Safety consists of the Fourth Edition. The most recent designation of ANSI/UL 1685 as an American National Standard (ANSI) occurred on July 7, 2015. ANSI approval for a standard does not include the Cover Page, Transmittal Pag

12、es and Title Page. Comments or proposals for 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. Neit

13、her a printed nor electronic copy of a Standard 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 1685-2010 (R2015)UL COPYRI

14、GHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JULY 7, 2015 UL 1685 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Choice of Test 5 2 Units of

15、Measurement .5 3 Undated References 5 UL FLAME EXPOSURE 4 Scope .5 5 Apparatus 6 5.1 General .6 5.2 Cable test enclosure and exhaust duct 6 5.3 Velocity-measuring instruments 8 5.4 Cable tray .9 5.5 Burner 9 5.6 Flowmeters .10 5.7 Air.11 5.8 Propane 11 5.9 Gas ows 12 5.10 Smoke-measuring instruments

16、 .12 5.11 Data acquisition 12 6 Smoke System Calibration 12 7 Test Specimens .13 7.1 Cable mounting .13 7.2 Conditioning 14 8 Test Procedure 14 8.1 Initial preparation 14 8.2 Procedure 14 8.3 Evaluation of damage 15 9 Calculations .15 9.1 Smoke release rate 15 10 Report .16 11 Acceptance Criteria .1

17、6 FT4/IEEE 1202 TYPE OF FLAME EXPOSURE 12 Scope .17 13 Apparatus 17 13.1 General .17 13.2 Cable test enclosure and exhaust duct 18 13.3 Velocity-measuring instruments 18 13.4 Cable tray .19 13.5 Burner 21 13.6 Flowmeters 21 13.7 Air 21 13.8 Propane .21 13.9 Gas ows .22 13.10 Smoke-measuring instrume

18、nts 22 13.11 Data acquisition .22 14 Smoke System Calibration .22 JULY 7, 2015 UL 1685 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 15 Test Specimens 23 15.1 Cable mounting 23 15.2 Conditioning .24 15.3 Smoke measurement system calibrati

19、on 24 16 Test Procedure .25 16.1 Initial preparation .25 16.2 Procedure .25 16.3 Evaluation of damage .26 17 Calculations 26 17.1 Smoke release rate .26 18 Report .27 19 Acceptance Criteria .27 OPTIONAL MEASUREMENTS 20 Introduction 28 21 Weight-Measuring System .28 22 Oxygen-Concentration Analysis E

20、quipment 28 23 Pretest Calibration 28 23.1 Load cell 28 23.2 Oxygen analyzer .29 23.3 Heat release rate .29 24 Calculations 30 24.1 Calibration constant 30 24.2 Heat release rate .31 25 Report of Supplemental Data .32 JULY 7, 2015 UL 1685 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCT

21、ION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Choice of Test 1.1 Limits are specied for each re test to make the tests equally acceptable for the purpose of quantifying the smoke. The cable manufacturer is to specify, for testing each limited-smoke cable construction, either the UL v

22、ertical-tray ame exposure described in Sections411ortheFT4/IEEE 1202 type of ame exposure described in Sections 12 19. The same test need not be specied for all constructions. Sections 20 25 provide for the collection of certain optional additional data, which may be requested by the cable manufactu

23、rer (see list in 25.1). 1.2 For cables that are subject to a vertical-tray ame test without the cable manufacturer requesting the rating for limited smoke, the end-product wire Standard species that smoke measurements are not applicable. In the UL or FT4/IEEE 1202 test for these cables, only the ame

24、 height and cable damage height are of interest unless the manufacturer requests that the smoke data and results also be reported. 2 Units of Measurement 2.1 If a value for measurement is followed by a value in other units either in parentheses or in square brackets , the second value may be only ap

25、proximate. The rst-stated value is the requirement. 3 Undated References 3.1 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. UL FLAME EXPOSURE 4 Scope 4.1 The UL ame exposure

26、is a vertical-tray re test for determining values of cable damage height and smoke release from electrical and optical-ber cables when the cables are subjected to a aming ignition source. For a cable to be acceptable under the UL test procedure, each of the following is to be exhibited (see 10.1 and

27、 10.2): a) The cable char height is to be less than 8 ft, 0 inch (244 cm) when measured from the bottom of the cable tray in accordance with Section 8. b) The total smoke released is to be 95 m 2 or less. c) The peak smoke release rate is to be 0.25 m 2 /s or less. 4.2 The purpose of this test is to

28、 determine ame propagation and smoke characteristics of these cables to qualify the cables for the limited smoke marking. 4.3 This test does not investigate the toxicity of the products of combustion or decomposition. JULY 7, 2015 UL 1685 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCT

29、ION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 4.4 This test does not cover the constructional requirements for the cable or any electrical, optical, or other performance requirements for the cable. 5 Apparatus 5.1 General 5.1.1 The test apparatus is to include the following main components: a) Igni

30、tion source. b) Collection hood and exhaust duct. c) Velocity-measuring instrumentation. d) Smoke-measuring instruments. e) Data-acquisition system. 5.1.2 The cable test enclosure is to be located in a test building that has vents for the discharge of the combustion products and also has provisions

31、for fresh-air intake. 5.2 Cable test enclosure and exhaust duct 5.2.1 The enclosure in which the cables are tested is to be as shown in Figure 5.1. Other enclosures may be used if they are shown to provide equivalent results and are of a size such as an 8-ft cube (2.4-m cube) or the 3-m cube such th

32、at the internal volume of the enclosure, exclusive of the pyramidal hood, is not less than 14.5 m 3 (512 ft 3 ) or greater than 36 m 3 (1272 ft 3 ), the oor area is not smaller than 6 m 2 (64 ft 2 ) or larger than 9 m 2 (97 ft 2 ), and the maximum air movement within the enclosure complies with 5.3.

33、4. 5.2.2 The walls of the enclosure shall be constructed of concrete masonry units complying with ASTM C90, Standard Specication for Loadbearing Concrete Masonry Units. The interior surface of the walls shall be painted at black. The walls are to contain window(s) as shown in Figure 5.1 for observat

34、ion of the re test. Alternate construction materials are acceptable for the enclosure walls provided the construction materials are capable of withstanding the high temperatures and open ame in the test enclosure. 5.2.3 The enclosure is to contain an access door, typically constructed of steel. The

35、door is to be provided with a wired-glass window and is to be located as shown in Figure 5.1. This is generated text for gtxt. JULY 7, 2015 UL 1685 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL Figure 5.1 Cable test enclosure NOTES 1) Enc

36、losure constructed of concrete blocks laid up with mortar. The blocks are to be nominally 8 inches high by 16 inches long by 6 inches thick (203 mm 406 mm 152 mm). 2) Steel-framed wired-glass door for access and observation. The overall size of the door is to be nominally 36 inches wide by 84 inches

37、 high (0.9 m 2.1 m). 3) Square steel-framed wired-glass observation window(s) nominally 18 inches (457 mm) on a side. 4) Truncated-pyramid stainless-steel hood. Each side is to be sloped 40. 5) Collection box with exhaust duct centered in one side. The box is to be a cube with each face a 36-inches

38、(914-mm) square. 6) Cable tray mounted vertically in the center of the enclosure. The tray base (stand) is optional and is not to be higher than 6 inches (152 mm). 7) Air-intake openings. JULY 7, 2015 UL 1685 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PE

39、RMISSION FROM UL 5.2.4 A truncated-pyramid steel hood and a collection box, each formed as shown in Figure 5.1, are to be located on top of the enclosure walls. Compressible, inorganic batting is to be used as a gasket between the hood and the walls. 5.2.5 The exhaust duct connected to the plenum on

40、 the hood is to consist of a nominal 16-inch (406-mm) steel pipe installed horizontally as shown in Figure 5.1. 5.3 Velocity-measuring instruments 5.3.1 The velocity in the exhaust duct is to be determined by measuring the differential pressure in the ow path with a bi-directional probe. The probe i

41、s to be connected to an electronic pressure gauge or to an equivalent measuring system. The probe is to consist of a stainless steel cylinder with a solid diaphragm in the center that divides the probe into two chambers. The probe shall have a length nominally two times the outside diameter of the c

42、ylinder with a minimum length of 1.0 in (25.4 mm) and a maximum length of 2.0 in (51 mm). The pressure taps (tubes) on either side of the diaphragm are to support the probe. 5.3.2 The axis of the probe is to be located on the centerline of the duct a minimum of 13 ft, 4 inches (4.0 m) downstream fro

43、m the last turn in the duct to ensure a nearly uniform velocity of ow across the duct cross section. The probe may be positioned at another location if it is shown that equivalent results are provided. The pressure taps are to be connected to a pressure transducer having a minimum resolution of 0.00

44、1 in H 2 O (0.025 Pa). 5.3.3 The temperature of the exhaust gas is to be measured approximately 6 inches (152 mm) upstream from the probe on the centerline of the duct using a 28 AWG (0.08 mm 2 ) Type K thermocouple having an inconel sheath. 5.3.4 The maximum air movement within the enclosure, with

45、only the intake and exhaust openings open, the exhaust fan on (if applicable), and the burner off, shall not exceed 1 m/s (3.3 ft/s), as measured in each of the following areas by means of a vane type of anemometer: a) On the oor of the enclosure at the position occupied by the burner during the tes

46、t. b) 1.5 m (4.9 ft) above the oor of the enclosure at the position occupied by the cable tray during the test. JULY 7, 2015 UL 1685 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 5.4 Cable tray 5.4.1 A steel ladder type of cable tray that

47、 is clean and free of residue and debris is to be securely mounted in a vertical position. The tray is to be 12 inches wide, 3 inches deep, about 96 inches long (300 mm by 76 mm by 2400 mm) and is to have channel rungs as follows: a) Each rung is to measure approximately 1 inch (25 mm) in the direct

48、ion parallel to the length of the tray and approximately 1/2 inch (13 mm) in the direction of the depth of the tray. b) The rungs are to be spaced approximately 9 inches (230 mm) apart (measured center to center). c) The rungs are to be tack welded to the side rails. 5.5 Burner 5.5.1 The test ame is

49、 to be supplied by means of a strip or ribbon type of propane-gas burner a . The ame-producing surface (face) of the burner is to consist essentially of a at metal plate that is 13-7/16 inches long and 1-5/32 inches wide (341 mm by 30 mm). The plate is to have an array of 242 holes in three staggered rows of 81, 80, and 81 holes each to form an array measuring 10-1/8 inches by 3/16 inch (257 mm by 5 mm). The holes are to be 0.052 inch (No. 55 drill) or 1.35 mm (1.35 mm metric drill