UL 60079-18 BULLETIN-2015
"UL Standard for Safety Electrical Apparatus for Explosive Gas Atmospheres – Part 18: Construction@ Test and Marking of Type of Protection Encapsulation ""m"" Electrical Apparatus (COMMENTS DUE: NOVEMBER 23@ 2015)"

Standard No.

UL 60079-18 BULLETIN-2015

Release Date

2015

Published By

Underwriters Laboratories (UL)

Status

Be replaced 2016-12

Replace By

UL 60079-18 BULLETIN-2016

Latest

UL 60079-18-2019

Scope

"This standard gives the specific requirements for the construction@ testing and marking of electrical equipment@ parts of electrical equipment and Ex components with the type of protection encapsulation ""m"" intended for use in explosive gas atmospheres or explosive dust atmospheres. This standard applies only for encapsulated electrical equipment@ encapsulated parts of electrical equipment and encapsulated Ex components (hereinafter always referred to as ""m"" equipment) where the rated voltage does not exceed 11 kV. The application of electrical equipment in atmospheres@ which may contain explosive gas as well as combustible dust simultaneously@ may require additional protective measures. This standard does not apply to dusts of explosives@ which do not require atmospheric oxygen for combustion@ or to pyrophoric substances. This standard does not take account of any risk due to an emission of flammable or toxic gas from the dust. This standard supplements and modifies the general requirements of IEC 60079-0. Where a requirement of this standard conflicts with a requirement of IEC 60079-0@ the requirement of this standard takes precedence. Where references are made to other IEC 60079 standards@ the referenced requirements found in these standards shall apply as modified by any applicable U.S. National Differences."

UL 60079-18 BULLETIN-2015 history

• 1970 UL 60079-18-2019 UL Standard for Safety Electrical Apparatus for Explosive Gas Atmospheres – Part 18: Encapsulation "m"
• 2018 UL 60079-18 BULLETIN-2018 UL Standard for Safety Explosive atmospheres – Part 18: Equipment protection by encapsulation “m” (COMMENTS DUE: JANUARY 7@ 2019)
• 2016 UL 60079-18 BULLETIN-2016 "UL Standard for Safety Electrical Apparatus for Explosive Gas Atmospheres – Part 18: Construction@ Test and Marking of Type of Protection Encapsulation ""m"" Electrical Apparatus (COMMENTS DUE: JANUARY 16@ 2017)"
• 2015 UL 60079-18 BULLETIN-2015 "UL Standard for Safety Electrical Apparatus for Explosive Gas Atmospheres – Part 18: Construction@ Test and Marking of Type of Protection Encapsulation ""m"" Electrical Apparatus (COMMENTS DUE: NOVEMBER 23@ 2015)"
• 2015 UL 60079-18 (ND)-2015 National Differences For UL 60079-18 Explosive atmospheres - Part 18: Equipment protection by encapsulation ’m’ (Fourth Edition)
• 2015 UL 60079-18-2015 UL Standard for Safety Explosive atmospheres - Part 18: Equipment protection by encapsulation “m” (Fourth Edition)
• 2012 UL 60079-18 (ND)-2012 National Differences For UL 60079-18 Explosive atmospheres - Part 18: Equipment protection by encapsulation ’m’ (Third Edition; Reprint with Revisions Through and Including October 05@ 2012)
• 2012 UL 60079-18-2012 Electrical apparatus for explosive gas atmospheres - Part 18: Construction, test and marking of type of protection encapsulation "m" electrical apparatus
• 2007 UL 60079-18 BULLETIN-2007 "UL Standard for Safety Electrical Apparatus for Explosive Gas Atmospheres – Part 18: Construction@ Test and Marking of Type of Protection Encapsulation ""m"" Electrical Apparatus (COMMENTS DUE: July 05@ 2007)"
• 2005 UL 60079-18 (ND)-2005 National Differences For UL 60079-18 Electrical Apparatus for Explosive Gas Atmospheres - Part 18: Construction@ Test and Marking of Type of Protection Encapsulation ’m’ Electrical Apparatus (Second Edition)
• 2005 UL 60079-18-2005 "UL Standard for Safety Electrical Apparatus for Explosive Gas Atmospheres – Part 18: Construction@ Test and Marking of Type of Protection Encapsulation ""m"" Electrical Apparatus (Second Edition)"
• 2003 UL 60079-18 BULLETINS-2003 "UL Standard for Safety Electrical Apparatus for Explosive Gas Atmospheres – Part 18: Construction@ Test and Marking of Type of Protection Encapsulation ""m"" Electrical Apparatus (04/18/2003 (6p); 01/23/2003 (6p))"
• 2002 UL 60079-18-2002 "UL Standard for Safety Electrical Apparatus for Explosive Gas Atmospheres – Part 18: Encapsulation ""m"" (First Edition)"