1、UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULNational Differences ForUL 60079-7Explosive Atmospheres - Part 7: Equipment protection by increased safety eUL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT
2、PERMISSION FROM ULNational Differences ForUL 60079-7Explosive Atmospheres - Part 7: Equipment protection by increased safety eEdition: 4Edition Date: October 15, 2008This revision to ANSI/UL 60079-7 is being issued to reflect the reaffirmation of ANSI approval. Nochanges in requirements have been ma
3、de.As noted in the Commitment for Amendments statement located on the back side of the titlepage, UL and ISA are committed to updating this bi-national standard jointly. However, therevision pages dated May 31, 2013 will not be issued by ISA as revision pages but as an updateto their standard.This d
4、ocument provides a single listing of the National Differences included in the UL adoption ofthe corresponding IEC standard.All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, ortransmitted in any form by any means, electronic, mechanical photocopying, re
5、cording, or otherwisewithout prior permission of UL.UL provides this standards document as is without warranty of any kind, either expressed or implied,including but not limited to, the implied warranties of merchantability or fitness for any purpose.In no event will UL be liable for any special, in
6、cidental, consequential, indirect or similar damages,including loss of profits, lost savings, loss of data, or any other damages arising out of the use of or theinability to use this standards document, even if UL or an authorized UL representative has been advisedof the possibility of such damage.
7、In no event shall ULs liability for any damage ever exceed the pricepaid for this standards document, regardless of the form of the claim.Users of the electronic versions of ULs Standards for Safety agree to defend, indemnify, and hold ULharmless from and against any loss, expense, liability, damage
8、, claim, or judgment (including reasonableattorneys fees) resulting from any error or deviation introduced while purchaser is storing an electronicStandard on the purchasers computer system.Copyright Underwriters Laboratories Inc.MAY 31, 2013NATIONAL DIFFERENCES FOR UL UL 60079-72UL COPYRIGHTED MATE
9、RIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULPrefaceThis document provides a single listing of the technical National Differences included in the UL adoptionof the corresponding IEC standard.In its IEC-based standards, UL uses the notations indicated below to
10、 identify national difference type, andthese types are additionally noted in this document. The standard may not use all types of thesedeviations.D1 - These are deviations which are based on basic safety principles and requirements, elimination ofwhich would compromise safety for U.S. consumers and
11、users of products.D2 - These are deviations based on safety practices. These are deviations for IEC requirements that maybe acceptable, but adopting the IEC requirements would require considerable retesting or redesign on themanufacturers part.DC - These are deviations based on the component standar
12、ds and will not be deleted until a particularcomponent standard is harmonized with the IEC component standard.DE - These are deviations based on editorial comments or corrections.DR - These are deviations based on the national regulatory requirements.Each national difference contains a description o
13、f what the national difference entails. Typically one of thefollowing words is used to explain how the text of the national difference is to be applied to the base IECtext:Addition / Add - An addition entails adding a complete new numbered clause, subclause, table,figure, or annex. Addition is not m
14、eant to include adding select words to the base IEC text.Deletion / Delete - A deletion entails complete deletion of an entire numbered clause, subclause,table, figure, or annex without any replacement text.Modification / Modify - A modification is an altering of the existing base IEC text such as t
15、headdition, replacement or deletion of certain words or the replacement of an entire clause,subclause, table, figure, or annex of the base IEC text.MAY 31, 2013 NATIONAL DIFFERENCES FOR UL UL 60079-7 3UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION F
16、ROM ULNational Differences1DV.1 DR Modification of the first paragraph, replace with the following:1DV.1.1 This standard specifies the requirements for the design, construction, testing andmarking of electrical apparatus with type of protection increased safety e intended foruse in Class I, Zone 1,
17、Groups IIA, IIB, and IIC hazardous (classified) locations. Thisstandard applies to electrical apparatus where the rated voltage does not exceed 11 kVr.m.s. a.c. or d.c. Additional measures are applied to ensure that the apparatus does notproduce arcs, sparks, or excessive temperatures in normal oper
18、ation or under specifiedabnormal conditions.1DV.2 DR Modification of the second paragraph:1DV.2.1 Replace IEC 60079-0 with UL 60079-0.1.1DV.1 DR Addition of 1.1DV.1.1:1.1DV.1.1 The U.S. version of IEC 60079-7 does not include requirements for Group Ielectrical apparatus.1.2DV.1 DR Addition of 1.2DV.
19、1.1:1.2DV.1.1 Where references are made to other IEC standards, the referenced requirementsfound in these standards shall apply as modified by any applicable U.S. NationalDifferences.2DV.1 DR Modification of Clause 2 title:2DV.1.1 Delete Normative.2DV.2 DR Modification of Clause 2 references:2DV.2.1
20、 Replace with the following references:IEC 60034-1,Rotating electrical machines Part 1: Rating and performanceIEC 60034-5,Rotating electrical machines Part 5: Degrees of protection provided by the internaldesign of rotating electrical machines (IP code) ClassificationIEC 60044-6,Instrument transform
21、ers Part 6: Requirements for protective current transformers fortransient performanceIEC 60050(426),International Electrotechnical Vocabulary (IEV) Chapter 426: Electrical apparatus forexplosive atmospheresMAY 31, 2013NATIONAL DIFFERENCES FOR UL UL 60079-74UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR
22、FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULIEC 60061-1,Lamp caps and holders together with gauges for the control of interchangeability andsafety Part 1: Lamp capsIEC 60061-2,Lamp caps and holders together with gauges for the control of interchangeability andsafety Part 2: Lamphol
23、dersIEC 60064,Tungsten filament lamps for domestic and similar general lighting purposes PerformancerequirementsIEC 60068-2-6,Environmental testing Part 2: Tests Test Fc: Vibration (sinusoidal)IEC 60068-2-27: 1987,Environmental testing Part 2: Tests Test Ea and guidance: ShockIEC 60068-2-42,Environm
24、ental testing Part 2-42: Tests Test Kc: Sulphur dioxide test for contacts andconnectionsUL 60079-0Electrical apparatus for explosive gas atmospheres Part 0: General requirementsUL 60079-1Electrical apparatus for explosive gas atmospheres Part 1: Flameproof enclosures dUL 60079-11Electrical apparatus
25、 for explosive gas atmospheres Part 11: Equipment protection byintrinsic safety iIEC 60085,Electrical insulation Thermal classificationIEC 60112,Method for the determination of the proof and the comparative tracking indices of solidinsulating materialsIEC 60238,Edison screw lampholdersIEC 60317-3:20
26、04,Specifications for particular types of winding wires Part 3: Polyester enamelled roundcopper wires, class 155IEC 60317-7:1990,Specifications for particular types of winding wires Part 7: Polyimide enamelled roundcopper wire, class 220IEC 60317-8:1990,Specifications for particular types of winding
27、 wires Part 8: Polyesterimide enamelledround copper wire, class 180MAY 31, 2013 NATIONAL DIFFERENCES FOR UL UL 60079-7 5UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULIEC 60317-13:1990,Specifications for particular types of winding wires Part
28、 13: Polyester or polyesterimideovercoated with polyamide-imide enamelled round copper wire, class 200IEC 60364-3,Electrical installations of buildings Part 5-55: Selection and erection of electricalequipment Other equipmentIEC 60400,Lampholders for tubular fluorescent lamps and starterholdersIEC 60
29、432-1,Incandescent lamps Safety specifications Part 1: Tungsten filament lamps for domesticand similar general lighting purposesIEC 60529,Degrees of protection provided by enclosures (IP Code)IEC 60664-1:1992,Insulation coordination for equipment within low-voltage systems Part 1: Principles,require
30、ments, and testsUL 60947-7-1Low-voltage switchgear and controlgear Part 7: Ancillary equipment Section 1:Terminal blocks for copper conductorsUL 60947-7-2Low-voltage switchgear and controlgear Part 2 Ancillary equipment Section 1:Protective conductor terminal blocks for copper conductorsIEC 61195:19
31、99,Double-capped fluorescent lamps Safety specificationsIEC 61347-2-3:2000,Lamp controlgear Part 2-3: Particular requirements for a.c. supplied electronic ballastsfor fluorescent lampsAmendment 1(2004)Amendment 2 (2006)IEC 62086-1,Electrical apparatus for explosive gas atmospheres Electrical resista
32、nce trace heating Part 1: General and testing requirementsISO 2859-1,Sampling procedures for inspection by attributes Part 1: Sampling schemes indexed byacceptance quality limit (AQL) for lot-by-lot inspectionC78.1,Fluorescent Lamps Rapid Start Types Dimensional and Electrical CharacteristicsC81.61,
33、Electric Lamp BasesMAY 31, 2013NATIONAL DIFFERENCES FOR UL UL 60079-76UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM ULC81.62,Lampholders for Electric LampsIEEE 515,IEEE Recommended Practice for the Testing, Design, Installation, and Maintenanc
34、e ofElectrical Resistance Heat Tracing for Industrial ApplicationsNFPA 70:2005,National Electrical CodeUL 486EEquipment Wiring Terminals for use with Aluminum and/or Copper ConductorsUL 508Industrial Control EquipmentUL 746AStandard for Polymeric Materials - Short Term Property EvaluationsUL 840Insu
35、lation Coordination Including Clearances and Creepage Distances for ElectricalEquipmentUL 1059Terminal Blocks3DV.1 DR Modification of the first paragraph:3DV.1.1 Replace document with standard and IEC 60079-0 with UL 60079-0.3.12DV.1 DE Modification of 3.123.12DV.1.1 Replace devices with equipment.3
36、.12.1DV.1 DR Modification of 3.12.13.12.1DV.1.1 Replace device with equipment.3.13DV.1 DR Modification of Note:3.13DV.1.1 Replace “IEC 60079-0” with “UL 60079-0.”3.16DV.1 DR Modification of 3.16:3.16DV1.1. Replace device with equipment.4.2.1DV.1 DR Modification of f):4.2.1DV.1.1 Delete except as per
37、mitted by the earth continuity test of IEC 60079-0.MAY 31, 2013 NATIONAL DIFFERENCES FOR UL UL 60079-7 7UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL4.2.1DV.2 DR Modification of item j), replace with the following:4.2.1DV.2.1 for screwless
38、connections, shall have a method to open the clampingmechanism so that neither the conductors nor the clamping mechanism is damagedduring the installation of the conductor.4.2.2.1DV.1 DR Modification of the first paragraph:4.2.2.1DV.1.1 Add copper before conductors.4.2.2.1DV.2 DR Modification of the
39、 third paragraph and the addition of a Note:4.2.2.1DV.2.1 Add copper before conductors and replace IEC 60079-0 with UL60079-0.NOTE: UL 1059 and UL 486E require terminals to be identified with the permitted wire sizesin AWG or kcmil.4.2.2.2DV.1 DC Modification of Clause 4.2.2.2 title with the followi
40、ng:4.2.2.2DV.1.1 Connections made using terminals complying with UL 60947-7-1, UL60947-7-2, UL 1059, or UL 486E4.2.2.2DV.2 DC Addition of the following paragraph:4.2.2DV.2.1 Terminals with a rated voltage greater than 1500 V shall be subjected to theapplicable examination and tests of UL 1059 and UL
41、 486E except for the dielectric testswhich shall be conducted in accordance with 6.10DV.1.4.2.2.2DV.3 DR Modification of the fourth paragraph and the addition of Note 0:4.2.2DV.3.1 Replace “IEC 60947-7-1” with “UL 60947-7-1”.NOTE 0: The temperature rise limit in UL 1059 is more restrictive and is li
42、mited to a rise of 30K at 100% of ratedcurrent.4.2.2.3DV.1 DR Modification of the second paragraph:4.2.2.3DV.1.1 Replace IEC 60079-0 with UL 60079-0.4.2.3.3DV.1 DC Addition of the following paragraph:4.2.3.3DV.1.1 Terminals with a rated voltage greater than 1500 V shall be subjected to theapplicable
43、 examination and tests of UL 1059 and UL 486E except for the dielectric testswhich shall be conducted in accordance with 6.10DV.1.4.2.3.4DV.1 DE Modification of 4.2.3.4(c):4.2.3.4DV.1.1 Delete lightweight before connecting.MAY 31, 2013NATIONAL DIFFERENCES FOR UL UL 60079-78UL COPYRIGHTED MATERIAL NO
44、T AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL4.2.3.4DV.2 DC Addition of NOTE:NOTE If an interlock is provided, UL 60079-0 requires that the type of protection selected be suitable forapplication in the explosive gas atmosphere.4.3DV.1 Addition of NOTE:NOTE These exa
45、mples are identical with those given in IEC 60664-1.4.4.1DV.1 DC Modification of the second paragraph:4.4.1DV.1.1 Add or UL 746A after IEC 60112.4.4.1DV.2 DC Modification to Note 1:4.4.1DV.2.1 Add or UL 840 after IEC 60664-1.4.4.3DV.1 DR Modification of Note 2:4.4.3DV.1.1 Replace IEC 60079-0 with UL
46、 60079-0.4.6.3DV.1 DR Modification of Note 2:4.6.3DV.1.1 Replace IEC 60079-0 with UL 60079-0.4.7.1DV.1 DR Modification of the first paragraph:4.7.1DV.1.1 Replace IEC 60079-0 with UL 60079-0.4.7.1DV.2 DR Modification of the second paragraph:4.7.1DV.2.1 Delete with the symbol X and replace IEC 60079-0
47、 with UL 60079-0.4.7.4DV.1 DC Addition of NOTE 3:NOTE 3: UL 60079-0 requires that devices used to ensure the limiting temperature is not exceeded are suitablefor application in the explosive gas atmosphere.4.9.2DV.1 DC Deletion of item (a):This clause is not applicable.4.9.2DV.2 DR Modification of t
48、he second paragraph:4.9.2DV.2.1 Replace IEC 60079-0 with UL 60079-0, replace symbol X with markings,and delete provided by enclosure shall be shown on the certificate.4.9.3DV.1 DR Modification of the first paragraph:4.9.3DV.1.1 Replace IEC 60079-11 with UL 60079-11.MAY 31, 2013 NATIONAL DIFFERENCES
49、FOR UL UL 60079-7 9UL COPYRIGHTED MATERIAL NOT AUTHORIZED FOR FURTHER REPRODUCTION ORDISTRIBUTION WITHOUT PERMISSION FROM UL4.9.3DV.2 DR Modification of Item b):4.9.3DV.2.1 Replace IEC 60079-0 with UL 60079-0.4.10DV.1 DC Deletion of Clause 4.10:This clause is not applicable.5.2.1DV.1 DC Deletion: Delete “IP23 for apparatus group I:”This item is not applicable.5.2.1DV.2 DR Modification of the third
