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2G/2D Zone 1-21 ATEX IEC Motors, Gearboxes, and Speed Variators
3G/3D Zone 1-22 ATEX IEC Motors, Gearboxes, and Speed Variators.

Explosive Atmosphere: Guidelines

ATEX Directive 94/9/EC - Equipment and protective systems intended for use in potentially explosive atmospheres.

Group Flammable Materials Explosive Atmosphere Protection Level Category Zone
I - Mines & Surface Installations

Firedamp, methane, carbon dust

Continuously Present Very High M1 -
Likely to occur in normal operation High M2 -
II Surface industries & other sites

Gas, Vapors, Dusts

Constantly present or present for long periods. Very High 1G 0 Gas
1D 20 Dust
Likely to occur in normal operation. High 2G 1 Gas
2D 21 Dust
Occasional presence only for a limited amount of time. Normal 3G 2 Gas
3D 22 Dust
Not suited - non ATEX Ex Motor None - -
- -
Atex Ex Motors Atex Ex Variable Speed Atex Ex Gearboxes
ATEX Ex 1/21 2G/2D Motors ATEX 1/21 2G/2D Speed Variators ATEX 1/21 2G/2D Speed Reducers
ATEX Ex 2/22 3G/3D Motors ATEX 2/22 3G/3D Speed Variators ATEX 2/22 3G/3D Speed Reducers
Click on ATEX product/rating in boxes above to go to that products page.

TVT America LLC has the complete solution for your ATEX 94/9/CE Ex Explosion proof drive needs to go Global with your machines standards, enter new markets, and meet specification requirements in some of the most demanding applications and environments.

For machine builders seeking to export their machines into new markets, electrical standards, certifications, and voltages can be very challenging.   From our production in Italy, and our assembly centers in North America, we are able to solve your motor and drive problems with the right solution, the solution that meets and exceeds standards, and the one with a global service & support network.

TVT products are known in applications like the milling of grains, dewatering of waste, compression of explosive gases, and pumping of toxic liquids.   For Grain Milling, a ATEX Ex 1/21 2G/2D rated motor coupled to a ATEX 1/21 2G/2D is used to mill grains into flour.  This flour is then filtered through a TVT Gauss Magneti filter to remove any ferrous particals.

In the filter pressing of solids in a waste-water processing facility, TVT's ATEX motors, variators, and gear reducers are first used in centrifuges to remove liquid from solids, then later in the process other TVT ATEX motors, variators, and gear drives, and high performance couplings are used to further press any remaining liquids from these solids in a filter-press machine.

TVT America offers one of the widest ranges of power transmission solutions in North America in metric drivelines.  Beyond the motor, variator, and gearbox, we complete your solution with shaft couplings, belt and chain drive and conveyor systems, torque limiters, brakes, pneumatic clutches, shaft collars, locking elements, vibrating motors & sieves, as well as  drum motors, magnetic lifting and separating elements, and linear motion.

Such a little company, with so many friends, giving its customers a complete solution... yet personal attention, and a global foot print.

The ATEX Ex, UL, CSA, CE, ISO, many certifications, specifications, and compliances allow TVT to meet your specific needs globably.  Very large multinational corporations and small machine builders seeking to reach their market with the right solution look to TVT. 

Let us show you what Made in Italy...Loved in America (and the world) means when it comes to you and your goals.

Standards Referenced    
Title EU CENELEC International IEC
Rotating electrical machines EN 60034-1 IEC 60034-1
     Part 1: Rating and Performance
     Part 2-1: Standard methods for determining losses and efficiency from tests. EN 60034-2 IEC 60034-2
     Part 5: Degrees of protection provided by the internal design of rotating electrical machines (IP code) Classification. EN 60034-5 IEC 60034-5
     Part 6: Methonds of cooling (IC Code). EN 60034-6 IEC 60034-6
     Part 7: Classification of types of construction, mounting arrangements and terminal box position (IM Code). EN 60034-7 IEC 60034-7
     Part 9: Noise Limits EN 60034-9 IEC 60034-9
     Part 12: Starting performance of single-speed three-phase cage induction motors. EN 60034-12 IEC 60034-12
     Part 14: Mechanical vibration of certain machines with shaft heights 56mm and higher.  measurement, evaluation and limites of vibration severity. EN 60034-14 IEC 60034-14
General purpose three-phase induction motors having standard dimensions and outputs.  Frame numbers 56 to 315 and flanges numbers 65 to 740. EN 50347 IEC 60072-1
Degrees of protection provided by enclosures (IP Code) EN 60259 IEC 60529
Electrical apparatus for explosive gas atmospheres. EN 60079-0 IEC 60079-0
     Part 0: General Requirements
     Part 1: Flameproof enclosures "d" EN 60079-1 IEC 60079-1
     Part 7: Increased safety "e" EN 60079-7 IEC 60079-7
Explosive atmospheres EN 60069-31 IEC 60079-31
     Part 31: Equipment dust ignition protection by enclosure "t"
  Documentation ATEX Series

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