Explosive atmospheres - Part 7: Equipment protection by increased safety "e"

Designation Number:
CAN/CSA-C22.2 NO. 60079-7:16
Standard Type:
National Standard of Canada - Adoption of International Standard
Standard Development Activity:
Amendment Revision
Status:
Proceeding to development
SDO Comment Period Start Date:
SDO Comment Period End Date:
Posted On:

Scope:

This part of IEC 60079 specifies the requirements for the design, construction, testing and marking of electrical equipment and Ex Components with type of protection increased safety "e" intended for use in explosive gas atmospheres. 

Electrical equipment and Ex Components of type of protection increased safety "e" are

either: 

a) Level of Protection "eb" (EPL "Mb" or "Gb"); or

b) Level of Protection "ec" (EPL "Gc")

Level of Protection "eb" applies to equipment or Ex Components, including their connections, conductors, windings, lamps, and batteries; but not including semiconductors or electrolytic capacitors. 

Level of Protection "ec" applies to equipment or Ex Components, including their connections, conductors, windings, lamps, and batteries; and also including semiconductors and electrolytic capacitors. 

The requirements of this standard apply to both Levels of Protection unless otherwise stated. 

For Level of Protection "eb", this standard applies to electrical equipment where the rated voltage does not exceed 11 kV r.m.s., a.c. or d.c. 

For Level of Protection "ec", this standard applies to electrical equipment where the rated voltage does not exceed 15 kV r.m.s., a.c. or d.c.  

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

Project need:

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