1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL 844 Luminaires for Use in Hazardous (Classied) Locations STANDARD FOR SAFETYUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM ULUL COPYR
2、IGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL UL Standard for Safety for Luminaires for Use in Hazardous (Classied) Locations, UL 844 Thirteenth Edition, Dated June 29, 2012 Summary of Topics This revision to ANSI/UL 844 is being issued to include
3、 the following changes in requirements: Revisions to add glass requirements for Class I, Division 1 to Section 10 Text that has been changed in any manner or impacted by ULs electronic publishing system is marked with a vertical line in the margin. Changes in requirements are marked with a vertical
4、line in the margin and are followed by an effective date note indicating the date of publication or the date on which the changed requirement becomes effective. The revised requirements are substantially in accordance with Proposal(s) on this subject dated January 22, 2016. All rights reserved. No p
5、art 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, in
6、cluding 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 o
7、r the 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 o
8、f ULs 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 purcha
9、sers computer system. MARCH 11, 2016 UL 844 tr1UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL MARCH 11, 2016 UL 844 tr2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION F
10、ROM UL JUNE 29, 2012 (Title Page Reprinted: March 11, 2016) 1 UL 844 Standard for Luminaires for Use in Hazardous (Classied) Locations The First through Eighth editions were titled Electric Lighting Fixtures for Use in Hazardous Locations. The Ninth through Eleventh were titled Electric Lighting Fix
11、tures for Use in Hazardous (Classied) Location. First Edition January, 1931 Second Edition June, 1934 Third Edition February, 1942 Fourth Edition March, 1950 Fifth Edition August, 1969 Sixth Edition August, 1971 Seventh Edition June, 1972 Eighth Edition October, 1978 Ninth Edition November, 1984 Ten
12、th Edition November, 1990 Eleventh Edition August, 1995 Twelfth Edition January, 2006 Thirteenth Edition June 29, 2012 This ANSI/UL Standard for Safety consists of the Thirteenth Edition including revisions through March 11, 2016. The most recent designation of ANSI/UL 844 as an American National St
13、andard (ANSI) occurred on March 11, 2016. The ANSI approval for this standard does not include the Cover Page, Transmittal Pages, Title Page, or effective date information. The Department of Defense (DoD) has adopted UL 844 on June 6, 1989. The publication of revised pages or a new edition of this S
14、tandard will not invalidate the DoD adoption. 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
15、are copyrighted by UL. Neither 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 2016 UNDERWRITERS LABORATORIES INC. ANSI/UL
16、 844-2016UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL JUNE 29, 2012 LUMINAIRES FOR USE IN HAZARDOUS (CLASSIFIED) LOCATIONS - UL 844 2 No Text on This PageUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITH
17、OUT PERMISSION FROM UL CONTENTS INTRODUCTION 1 Scope .8 2 General 8 3 Components .8 4 Units of Measurement .9 5 Undated References 9 6 Class, Zone, and Group Equivalency 9 6.1 Class I, Zone 1, Group IIA .9 6.2 Class I, Zone 1, Group IIB .9 6.3 Class I, Zone 1, Group IIB plus hydrogen 9 6.4 Class I,
18、Zone 1, Group IIC .9 6.5 Class I, Zone 2, Group IIA .9 6.6 Class I, Zone 2, Group IIB 10 6.7 Class I, Zone 2, Group IIB plus hydrogen 10 6.8 Class I, Zone 2, Group IIC 10 6.9 Zone 20 and 21 .10 6.10 Zone 22 .10 7 Luminaires Subject to Deposits of Combustible-Paint Residue .10 8 Enclosure Types .10 P
19、ART I LUMINAIRES FOR CLASS I, DIVISION 1, GROUPS A, B, C, AND D, AND CLASS II, DIVISION 1, GROUPS E, F, AND G LOCATIONS CONSTRUCTION 9 Enclosure Material .11 10 Enclosure Thickness 12 10.1 Enclosures for Class I locations .12 10.2 Enclosures for Class II locations 12 11 Joints in Enclosures for Clas
20、s I Locations .14 11.1 General .14 11.2 Luminaires for Class I, Groups C and D locations .16 11.3 Luminaires for Class I, Group B locations 23 11.4 Luminaires for Class I, Group A locations 24 12 Joints in Enclosures for Class II, Groups E, F, and G Locations 24 13 Holes in Enclosure 25 13.1 Luminai
21、res for Class I locations .25 13.2 Luminaires for Class II locations 26 14 Shaft Openings .26 14.1 General .26 14.2 Luminaires for Class I locations .26 14.3 Luminaires for Class II locations 27 15 Guards of Luminaires for Classes I and II Locations .27 16 Nonmetallic External Parts 27 17 Supply Con
22、nections .27 17.1 Luminaires for Class I locations .27 17.2 Luminaires for Class II locations 30 17.3 Leads 31 JUNE 29, 2012 LUMINAIRES FOR USE IN HAZARDOUS (CLASSIFIED) LOCATIONS - UL 844 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 18
23、Disconnecting Means 32 19 Protection Against Corrosion 32 20 Materials Applied to Joint Surfaces 32 21 Fuses 33 22 Grounding and Bonding 33 23 Porosity in Enclosure Materials 34 24 Luminaires for Wet Locations .34 PERFORMANCE 25 Temperature Test .34 26 Explosion Tests .38 27 Tests on Luminaires with
24、 Fuses .40 28 Hydrostatic Pressure Test 40 29 Dust-Penetration Test 42 30 Thermal Shock Test .42 31 Rust-Resistance Test 43 32 Test for Secureness of Conduit Hubs 43 32.1 General .43 32.2 Pullout .44 32.3 Bending 44 33 Vibration Test 45 34 Electrical Resistance Test 49 35 Non-Metallic Enclosure Mate
25、rials Tests Class I 49 35.1 General .49 35.2 Chemical compatibility by material samples .49 35.3 Chemical compatibility by complete end product tests .51 35.4 Test for Accumulation of Static Electricity 53 36 Tests on Sealing Compounds 54 37 Non-Metallic Enclosure Tests Class II .54A 38 Leakage Test
26、 on Factory-Installed Conduit Seals 54B PART II LUMINAIRES FOR CLASS I, DIVISION 2, GROUPS A, B, C, AND D LOCATIONS GENERAL 39 Details .54B CONSTRUCTION 40 Enclosure 56 40.1 General .56 40.2 Supply connections 56 40.3 Luminaires for wet locations 56 40.4 Protection against corrosion 57 41 Arcing and
27、 Sparking Parts .57 PERFORMANCE 42 Temperature Test .57 JUNE 29, 2012 LUMINAIRES FOR USE IN HAZARDOUS (CLASSIFIED) LOCATIONS - UL 844 4UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL PART III LUMINAIRES FOR CLASS II, DIVISION 2, GROUPS F AND
28、 G AND CLASS III LOCATIONS GENERAL 43 Details .59 CONSTRUCTION 44 Enclosure 59 45 Supply Connections .59 46 Control Devices .61 47 Protection Against Corrosion 61 PERFORMANCE 48 Temperature Test .61 49 Dusttight Enclosure Test .63 49.1 General .63 PART IV PORTABLE LUMINAIRES GENERAL 50 Details .63 5
29、1 Protection of Glass Parts .63 52 Seal Between Lamp and Terminal Compartments .63 53 Supply Connections .64 53.1 Cords, plugs, and provision for connection 64 54 Terminal enclosure 64 54.1 Class I .64 54.2 Class II 65 55 Cord Clamp and Strain Relief 65 56 Attachment of Parts 65 57 Hook and Handle 6
30、5 58 Casters and Wheels .65 59 External Metal Parts .66 60 Switches .66 61 Spacings .67 PERFORMANCE 62 Temperature Test .68 63 Accelerated Aging Test of Bushing 69 64 Thread-Wear Test .69 65 Strain-Relief Test 69 66 Rough-Usage Test 70 67 Drop Test 70 68 Impact Test .70 69 Overturning Test 71 70 Sta
31、bility Test 71 71 Resistance Test .71 JUNE 29, 2012 LUMINAIRES FOR USE IN HAZARDOUS (CLASSIFIED) LOCATIONS - UL 844 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL PART V MANUFACTURING AND PRODUCTION TESTS 72 Bonding Test on Portable Lumina
32、ires .71 73 Hydrostatic Pressure Test 72 PART VI MARKING 74 Details .72 SUPPLEMENT SA - INVESTIGATION OF ELASTOMERIC GASKETS SA1 Scope SA1 SA2 General .SA1 SA3 Physical Properties .SA1 SA4 Accelerated Air-Oven Aging Test .SA1 SA5 Compression Set .SA3 SA5.1 General SA3 SA5.2 Compression set determina
33、tion .SA3 SA5.3 Dust penetration SA4 SA6 Identication .SA5 SUPPLEMENT SB - ALTERNATIVE JOINTS IN ENCLOSURES SB1 General SB1 SB2 Cemented Joints SB1 SB3 Joints with Flamepaths Class I, Groups A, B, C, and D SB1 SB4 Labyrinth Joints A, B, C, and D .SB2 SB5 Threaded Joints SB3 SB5.1 General Class I, Gr
34、oups A, B, C, and D SB3 SB5.2 Class I, Groups A and B .SB3 SB5.3 Class I, Groups C, and D SB4 SB6 Straight(FlatorCylindrical),andRabbetJoints:ClassI,GroupsA,B,C,andD .SB4 SUPPLEMENT SC - ALTERNATIVE EXPLOSION TESTS SC1 Explosion Tests .SC1 SUPPLEMENT SD - LUMINAIRES INTENDED FOR FLUSH MOUNTING IN PA
35、INT SPRAY AREAS SD1 Scope SD1 SD2 Hip- or Ceiling-Mounted Luminaires Accessed from Outside a Down Draft Paint Spray Booth Only .SD1 SD3 Hip- or Ceiling-Mounted Luminaires Accessed from Inside a Down Draft Paint Spray Booth .SD2 JUNE 29, 2012 LUMINAIRES FOR USE IN HAZARDOUS (CLASSIFIED) LOCATIONS - U
36、L 844 6UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL SD4 Wall-MountedLuminairesAccessedfromOutsideaDownDraftPaintSprayBoothOnly .SD2 SD5 Wall-Mounted Luminaires Accessed from Inside a Down Draft Paint Spray Booth .SD3 SD6 Marking .SD3 SD7
37、Installation Instructions SD4 JUNE 29, 2012 LUMINAIRES FOR USE IN HAZARDOUS (CLASSIFIED) LOCATIONS - UL 844 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL INTRODUCTION 1 Scope 1.1 These requirements cover xed and portable luminaires for in
38、stallation and use in hazardous (classied) locations, Class I, Divisions 1 and 2, Groups A, B, C, and D; Class II, Division 1, Groups E, F, and G; Class II, Division 2, Groups F and G; and Class III, Divisions 1 and 2, in accordance with the National Electrical Code, NFPA 70. 1.2 These requirements
39、also cover luminaires for installation and use in Class I, Zones 1 and 2, Groups IIA, IIB, IIB plus Hydrogen, and IIC, and Zone 20, 21 and 22 hazardous (classied) locations in accordance with the National Electrical Code, NFPA 70. 1.3 These requirements cover luminaires for use only under the follow
40、ing atmospheric conditions: a) A minimum ambient temperature of minus 25C (minus 13F); b) An oxygen concentration not greater than 21 percent by volume; and c) A nominal barometric pressure of one atmosphere. 2 General 2.1 Luminaires for use in hazardous locations shall also comply with the applicab
41、le requirements for luminaires for use in unclassied locations. 2.2 Low-pressure sodium lamps shall not be used in a luminaire for use in Division 1 hazardous locations. 3 Components 3.1 Except as indicated in 3.2, a component of a product covered by this standard shall comply with the requirements
42、for that component. 3.2 A component is not required to comply with a specic requirement that: a) Involves a feature or characteristic not required in the application of the component in the product covered by this standard, or b) Is superseded by a requirement in this standard. 3.3 A component shall
43、 be used in accordance with its rating established for the intended conditions of use. 3.4 Specic components are incomplete in construction features or restricted in performance capabilities. Such components are intended for use only under limited conditions, such as certain temperatures not exceedi
44、ng specied limits, and shall be used only under those specic conditions. JUNE 29, 2012 LUMINAIRES FOR USE IN HAZARDOUS (CLASSIFIED) LOCATIONS - UL 844 8UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 4 Units of Measurement 4.1 Values stated
45、without parentheses are the requirement. Values in parentheses are explanatory or approximate information. 5 Undated References 5.1 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 stand
46、ard. 6 Class, Zone, and Group Equivalency 6.1 Class I, Zone 1, Group IIA 6.1.1 Luminaires intended to be marked in accordance with 74.4 shall comply with all the requirements for luminaires for use in Class I, Division 1, Group D hazardous (classied) locations. 6.2 Class I, Zone 1, Group IIB 6.2.1 L
47、uminaires intended to be marked in accordance with 74.5 shall comply with all the requirements for luminaires for use in Class I, Division 1, Group C hazardous (classied) locations. 6.3 Class I, Zone 1, Group IIB plus hydrogen 6.3.1 Luminaires intended to be marked in accordance with 74.6 shall comp
48、ly with all the requirements for luminaires for use in Class I, Division 1, Group B hazardous (classied) locations. 6.4 Class I, Zone 1, Group IIC 6.4.1 Luminaires intended to be marked in accordance with 74.7 shall comply with all the requirements for luminaires for use in both Class I, Division 1,
49、 Group A and Class I, Division 1, Group B hazardous (classied) locations. 6.5 Class I, Zone 2, Group IIA 6.5.1 Luminaires intended to be marked in accordance with 74.8 shall comply with all the requirements for luminaires for use in Class I, Division 2, Group D hazardous (classied) locations. JUNE 29, 2012 LUMINAIRES FOR USE IN HAZARDOUS (CLASSIFIED) LOCATIONS - UL 844 9UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION OR DISTRIBUTION WITHOUT PERMISSION FROM UL 6
