Sealing Cables In Accordance with ATEX in Explosive Atmospheres & Hazardous Areas

Posted on 10 March 2020

Cable Sealing Approved for Ex e and Ex tb

Roxtec Ex cable sealing solutions using cable transit systems prevent ignition of explosive atmospheres in hazardous area locations.

Typical applications are Ex e and/or Ex tb rated electrical enclosures such as transformers, motors, generators and junction boxes.

Ex e means increased safety for explosive gas atmospheres, and Ex tb means explosion protection by enclosure for explosive dust atmospheres.

Hazardous Area Zone Classification

Hazardous areas are rated into zones based on the possibility of occurrence of an explosive atmosphere – it is the obligation of the owner or the operator of a facility to ensure that the zone classification is done by authorized personnel.

Hazardous Area Cable Seals

The Roxtec Ex product range includes a wide variety of pipe and cable seals to handle different cable sizes and openings.  The sealing products are designed and certified for use in Zone 1 and Zone 2 for gas (including vapour and mists) and Zone 21 and Zone 22 for dust.

Cable Sealing Standards

Roxtec Ex solutions are tested, approved and certified according to the following standards:

• EN 60079-0
• EN 60079-7
• EN 60079-31
• IEC 60079-0
• IEC 60079-7
• IEC 60079-31

Protecting Substations Against Flooded Ducts

Further Roxtec Reading

• 132kV 33kV 11kV DNO Substations – A Guide To Cable Sealing By Roxtec
• Sealing Cables In Offshore Substations – A Roxtec CPD