Zone 21 means the project site may produce combustible dust, fiber abnormally when the project operates, here are some recommended explosion proof lighting, control box and fittings for your options subject to ATEX and IECEx standard.
In Simple Word
Zone 22 area means ignitable concentrations of hazards, flammable dust, are unlikely to exist under normal operating conditions.
In Quantitative Measurement
Zone 22 area means ignitable concentrations of hazards, flammable dust, present from 1 hour to 10 hours every year.
Where ignitable concentrations of flammable dust:
Are not likely to exist under normal operating conditions
Occur for only a short period of time
Become hazardous only in case of an accident or some unusual operating condition
Zone 22
ATEX/IECEx
IP66+
Class I Division 2
Zone 2, Zone 21&22
LED 30-300W
Type 4X, IP66
Class I Division 2
Zone 2, Zone 21&22
LED30-240W
Type 4X, IP66
Class I Division 2
Zone 1&2, Zone 21&22
LED 20-180W
Type 4X, IP66
Class I Division 2
Zone 2, Zone 21&22
LED 20-400W
Type 4X, IP66
Class I Division 2
Zone 2, Zone 21&22
LED 40-150W
Type 4X, IP66
Class I Division 2
Zone 2, Zone 21&22
LED 20-80W
Type 4X, IP66
Class I Division 2
Zone 1&2, Zone 21&22
LED 9-80W
Type 4X, IP66
Class I Division 1
Zone 1&2, Zone 21&22
LED 2x5W
Type 4X, IP66
Class I Division 1
Zone 1&2, Zone 21&22
LED 5W
Type 4X, IP66
Class I Division 1
Zone 1&2, Zone 21&22
LED 5W
Type 4X, IP66
Class I Division 1
Zone 1&2, Zone 21&22
LED 2x5W
Type 4X, IP67
Class I Division 1
Zone 1&2, Zone 21&22
LED 5W
Type 4X, IP65
Class I Division 1
Zone 1&2, Zone 21&22
LED 5W
Type 4X, IP68
Class I Division 1
Zone 1&2, Zone 21&22
LED 2x5W
Type 4X, IP65
Class I Division 1
Zone 1&2, Zone 21&22
LED 5W
Type 4X, IP65
Class I Division 1
Zone 1&2, Zone 21&22
LED 5W
Type 4X, IP67
C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.32A
Type 4X, IP66
Built-in Switch
C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.125A
Type 4X, IP66
Built-in Terminal blocks
C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.125A
Type 4X, IP66
Built-in Terminal blocks
C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.125A
Type 4X, IP66
Built-in Terminal blocks
C1D1, C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.630A
Type 4X, IP66
Built-in Terminal blocks
C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.160A
Type 4X, IP66
Built-in Terminal blocks
C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.160A
Type 4X, IP66
Built-in Terminal blocks
C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.250A
Type 4X, IP66
C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.250A
Type 4X, IP66
C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.250A
Type 4X, IP66
C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.M63x1.5
Type 4X, IP65
Plastic
C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.M75x1.5(NPT 2 1/2")
Type 4X, IP66
Mental
C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.M75x1.5(NPT 2 1/2")
Type 4X, IP66
Non-armored
C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.M75x1.5(NPT 2 1/2")
Type 4X, IP66
Armored
C1D1, C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.115x1.5(NPT 4")
Type 4X, IP66
C1D1, C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.115x1.5(NPT 4")
Type 4X, IP66
C1D1, C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.115x1.5(NPT 4")
Type 4X, IP66
C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.115x1.5(NPT 4")
Type 4X, IP66
C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.115x1.5(NPT 4")
Type 4X, IP66
C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.115x1.5(NPT 4")
Type 4X, IP66
C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.63x1.5(NPT 2")
Type 4X, IP66
C1D1, C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.63x1.5(NPT 2")
Type 4X, IP66
C1D1, C1D2, C2D1, C2D2
Zone 1&2, Zone 21&22
Max.63x1.5(NPT 2")
Type 4X, IP66
ATEX Zone 22 means that there is high possibility where do not exist hazardous dusts, but if there exist, it is for less than 10 hours a year and in low concentration. Zone 22 is the safest zone among all dust zones hazardous area, but it is not safe. In general, electrical equipment may be used in Zone 22 with the explosion proof protection measures like non-incendive Ex n, restricted breathing Ex nR, non-sparking Ex nA, energy limited Ex nL and hermetically sealed Ex nC subject to EN 60079 articles.
ATEX zone can be divided into several zones, zone 0, zone 1, zone 2, zone 20, zone 21, zone 22. each with its own specific risks and regulations for the use of equipment. Zone 0, zone 1 and zone 2 are gas zones where explosive gases, vapors may present with the duration time for more than 1000 hours every year, 10 to 1000 hours every year and 1 to 10 hours every years respectively. Zone 20, zone 21 and zone 22 are dust zones where explosive dust may present with the duration time for more than 1000 hours every year, 10 to 1000 hours every year and 1 to 10 hours every years respectively
ATEX and IECEx are very similar. The name ATEX comes from the French Atmosphères Explosible, describing the equipment and use of a product to be located in an explosive atmosphere. The ATEX certification is mandatory across Europe based on Directive 2014/34/EU and involves all stages from the manufacturing, through to the installation and use of the equipment. IECEx stands for International Electrotechnical Commission Explosive. While ATEX is a mandatory application limited to Europe, IECEx is an international certification accepted in several countries to help build confidence in the safety of Ex equipment
No, ATEX certification is a certification of equipment intended for use in potentially explosive atmospheres in the European Union. Equipment intended for use in potentially explosive atmospheres in the United States must have the specific mark of one of the NRTLs recognized to test such as UL, Intertek certificate. Equipment intended for use in potentially explosive atmospheres in Canada must have the specific mark of CSA certificate.
Yes, IECEx standard is accepted by most countries since it is a international recognized standard. IECEx certified equipment scheme is a voluntary compliance system designed to assess and certify multiple aspects of potentially hazardous environments. More than 30 countries currently participate, including the U.S., China, Japan, Korea, Australia and Brazil, as well as parts of EU countries, but IECEx is not applicable for all countries in Europe.
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