UL 60079-6 PDF

1 Scope

1.1 This standard

part of IEC 60079

specifies the requirements for the design, construction, testing and marking of Ex Equipment and Ex Components with type of protection liquid immersion “o” intended for use in explosive gas atmospheres.

Ex Equipment and Ex Components of type of protection liquid immersion “o” are either:

•  Level of Protection “ob” (EPL “Mb” or “Gb”)

•  Level of Protection “oc” (EPL “Gc”)

For Level of Protection “ob”, this standard applies where the rated voltage does not exceed 11 kV r.m.s.

a.c.

or d.c.

For Level of Protection “oc”, this standard applies where the rated voltage does not exceed 15 kV r.m.s.

a.c.

or d.c.

NOTE  Requirements for higher voltages are under consideration.

1.1 This standard supplements and modifies the general requirements of UL 60079-0

IEC 60079-0

. Where a requirement of this standard conflicts with a requirement of UL 60079-0

IEC 60079-0

, the requirement of this standard takes precedence.

Summary of Topics

This reaffirmation of ANSI/UL 60079-6 dated November 14, 2024 is being issued to update the title page to reflect the most recent designation as a Reaffirmed American National Standard (ANS). No technical changes have been made.

This standard is an adoption of IEC 60079-6, Explosive Atmospheres – Part 6: Equipment Protection by Liquid Immersion "o" (fourth edition issued by IEC February 2015) with US National Differences.