Dietz supplies and services flameproof motors designed to prevent ignition in hazardous atmospheres. Our explosion-proof motor enclosures contain internal sparks and flares, ensuring that an explosion inside the motor does not propagate to the surrounding area. Built with robust material construction, these units meet strict safety standards for use in environments where flammable vapors, gases, or dust are present.
Applications and Classifications of Flameproof Motors
Any environment that contains vapor, dust, gas, and other flammable substances can pose hazards to workers who regularly operate electric motors. If an explosion happens inside a machine’s motor in such a flammable setting, it could trigger a greater explosion outside of it, threatening the entire workplace in the process.
Flameproof motors are built to contain very hazardous contents within the motor. By isolating these hazards from the surrounding environment, they protect workers and facilities alike from unwanted accidents that could derail operations while ensuring that production continues without a hitch.
Hazardous Location Classes and Groups
Hazardous motors are classified into separate classes that establish the kind of motor best for particular environments:
- Class I: Areas with vapors, liquids, gases
- Class II: Areas with dust
- Class III: Areas with flammable fibers or lint
Each class also has a subgroup: A – G. Each group indicates how elements are affected when explosions occur. The labels are organized by the severity of the requirements within each specific motor design:
- Groups A – D: Classified under Class I, due to their vapor or gas form.
- Groups E – G: Classified under Class II, due to their dust form.
Division 1 and Division 2 Requirements
In addition to motor classes, hazardous locations are further classified into divisions based on the likelihood of explosive elements being present:
- Division 1: Explosive elements almost always present on location.
- Division 2: Explosive elements inside operator-handled storage tanks or containers with potential of spillage or leakage in event of equipment malfunction.
Understanding these divisions is critical for selecting the correct flameproof motor specification to ensure compliance with local and international safety regulations.
Dietz’s ATEX, IECEx Flameproof Motor Options
Dietz has many hazardous location motors depending on each application’s needs. With every customer, we work to strike the perfect balance between safety and productivity. That’s why our flameproof motors always meet both international and domestic standards put in place by the CSA, ATEX, UL, and IECEx (International Electrotechnical Commission System for Certification to Standards Relating to Equipment for use in Explosive Atmospheres).
Below are just a few of Dietz’s many flameproof motors:
Zone 1:
ATB – Wolong Nordenham GmbH Flameproof Motors
ATB released the first explosion-proof motor in 1952,. Specializing in low-maintenance and low-noise machines, it’s been a trusted producer of flameproof motors for more than six decades now.
Other Flameproof Products ATEX and IECex Supplied by Dietz Include:
- Brook Crompton
- Siemens
- CEMP
- Elprom
- ABB
Zone 2:
- EEx nA Zone 2 by Brook Crompton
- EEx nA Zone 2 by ABB
- EEx nA Zone 2 by Siemens
All of these motors are available in every NEMA frame size, and all of them can be ordered with various mountings. We also provide single-phase motors at the customer’s request.
Learn More
Workplace safety has always been a top priority for Dietz. For decades, we’ve worked with leading manufacturers to develop customized solutions for a wide array of applications. With our extensive inventory of flameproof motors and experienced team of specialists, we’re confident that we have a product that suits your specific needs.
Due to our strong partnerships with trusted manufactures in the industry and our proven commitment to customer service, you can be sure that you’re in good hands with Dietz. Contact us today or request a quote on our website to explore our motors in greater detail.
Technical Specifications and Material Selection
Choosing the right flameproof motor requires attention to voltage, frame sizes, and the specific material composition of the enclosure. The motor enclosure must be constructed from materials that can withstand the temperature rise generated during an internal explosion without compromising the integrity of the seal.
Voltage and Frame Size Options
Our inventory includes motors in various voltage configurations to match your plant’s electrical infrastructure. Standard NEMA frame sizes are available, allowing for easy replacement of existing units. When selecting a motor, consider the flange mounting requirements and the specific voltage rating needed for your application to ensure optimal performance and reliability.
Surface Temperature and Ignition Risk
The surface temperature of a flameproof motor is a critical factor in preventing ignition of surrounding flammable materials. Each motor is rated for a specific temperature class, which must be lower than the auto-ignition temperature of the gas or dust present in the area. Dietz specialists can help you determine the correct temperature class to mitigate risk and ensure compliance with safety standards.
Manufacturing and Quality Assurance
Dietz partners with leading manufacturers to ensure that every flameproof motor meets rigorous quality control standards. The manufacturing process involves precise machining of the enclosure to ensure that the flame path is long enough to cool the gases before they exit the motor. This technology is essential for preventing the propagation of an explosion.
Compliance with International Standards
All motors supplied by Dietz are certified to meet ATEX, IECEx, UL, and CSA standards. These certifications verify that the motor has been tested under controlled conditions to ensure it can safely contain an explosion. We provide the necessary certificate of conformity for each unit, facilitating compliance audits and regulatory inspections.
Reliability and Maintenance
Flameproof motors are designed for high reliability in harsh conditions. Regular maintenance is required to inspect the enclosure for damage, corrosion, or loose fasteners that could compromise the flameproof integrity. Dietz offers servicing and repair services to extend the life of your motors and ensure they continue to operate safely.
