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ATEX Telephone

J&R Technology Ltd | Updated: Jan 26, 2019

J&R Technology designs and manufactures and distributes Hazardous Area telephone equipment that meets the stringent ATEX requirements and EN standards for items that will be put into service within the European Union (EU).

ATEX is the common name given to a set of European Directives relating to Hazardous Area Installations (Flammable Atmospheres) that takes its name from the French "Atmosphères Explosibles". ATEX Directives have been mandatory since July 1, 2003.

Hazardous Areas

According to the EN standards description, Hazardous Areas are when Potentially Explosive Atmospheres exist where there is a risk of explosion due to mixtures of gas/air, vapour/air, dust/air or other flammable combinations.

Process plants, refineries, oil and gas platforms etc are divided into Zones (European and IEC method) or Divisions (North American method) according to the likelihood of a potentially explosive atmosphere being present.

The following standards are used to define the classification for Guardian Telecom Zone 1 products:

· EN 60079-0:2006: Electrical Apparatus for use in Zones 0, 1 & 2 Haz Loc – General Requirements

· EN 60079-7:2007: Electrical Apparatus for use in Zones 0, 1 & 2 Haz Loc – Increased Safety “e”

· EN 60079-11:2007: Electrical Apparatus for use in Zones 0, 1 & 2 Haz Loc – Intrinsic Safety “i”

· EN 60079-18:2004: Electrical Apparatus for use in Zones 1 – Encapsulation “m”

· EN 60950-1:2006: Information Technology Equipment – Safety

 

Table 1. Comparing between Zones and Divisions

 

European & IEC Classification

Definition of Zone or Division

North American Classification

Zone 0

(gasses)

An area in which an explosive mixture is continuously present or present for long periods

Class I Division 1

(gases)

Zone 20

(dusts)

Class II Division 1

(dusts)

Zone 1

(gasses)

An area in which an explosive mixture is likely to occur in normal operation

Class I Division 1

(gases)

Zone 21

(dusts)

Class II Division 1

(dust)

Zone 2

(gasses)

An area in which an explosive mixture in not likely to occur in normal operation and if it occurs it will exist only for a short time

Class I Division 2

(gases)

Zone 22

(dusts)

Class II Division 1 & 2

(dusts)


Class III Division 1

(fibres)


Class III Division 2

(fibres)

 

Note: that many (but certainly not all) countries outside of North America use the IEC Standards as a basis for their own national standards. 

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