Explosion-proof DC motors
Performance parameter range for our platform construction design:
Frame size: 90 - 225
Output: 0,1 - 30 kW
Speed: 750 min-1 - 3.600 min-1
Voltage: 24 V - 440 V
- Full performance in under 2 seconds
- Suitable for equipment category 2G (Zone 1 and Zone 2)
- Motors in explosion protection type “d”, terminal boxes in “d” or “e”
- Vibration severity grade B for extended service life
- Corrosion protection class C1 to C5 for aggressive industrial environments
Explosion-proof DC motors – Safety and performance for demanding industrial applications
Explosion-proof DC motors are specially designed for use in hazardous areas where flammable gases, vapors, or dust may occur. In these zones – especially as DC motors for zone 1 and zone 2 – certified drive systems are legally required. WINKELMANN’s explosion-proof DC motors combine tested motor EX protection with durable drive technology and high operational safety. As certified DC motors, they meet all relevant standards for safe operation in sensitive industrial environments.
As powerful industrial drives, our ATEX- and IECEx-compliant DC motors impress with high thermal resistance, robust construction, and reliable ignition protection. A DC motor EX must operate safely and consistently even under extreme environmental conditions. That is exactly what our eyplosion-proof DC motors are designed for. They are ideal for power plants, the oil and gas industry, and industrial pump applications, ensuring stable performance even during continuous operation.
Thanks to flexibly adjustable ratings such as voltage, speed, and power range, the DC motors for zone 1 and 2 can be optimally integrated into existing systems. Each motor is project-specifically configured and can be precisely adapted in terms of mechanics, connections, and protection type. International certifications such as ATEX certification, IECEx, CSA/UL, and EAC enable global use in hazardous industrial areas and provide additional investment and planning security.
Technical properties and design features
Our explosion-proof DC motors are developed for permanent operation in hazardous industrial plants. As certified DC motors, they meet all requirements for DC motors in zone 1 and zone 2. The junction boxes are optionally available in ignition protection type “e” (Increased Safety) or “d” (Flameproof Enclosure) and comply with international motor EX standards. This ensures that potential ignition sources are reliably avoided or safely enclosed.
A key quality feature is insulation class H (after F). It guarantees high thermal resistance and provides additional safety reserves – especially at elevated ambient temperatures or during continuous full-load operation. In ATEX zones, this thermal stability is crucial because a DC motor must operate reliably at all times. Our explosion-proof DC motors are therefore designed for maximum efficiency and long-term operational safety.
The robust construction ensures mechanical stability and high resistance to industrial stress. Thanks to guaranteed vibration class B, the Ex-motors operate with minimal vibration. This significantly extends the service life of the ball bearings and reduces maintenance costs and unplanned downtime. A DC motor EX thus not only provides certified explosion protection but also economic advantages in daily operation.
Moreover, our eyplosion-proof DC motors can be precisely adapted to customer-specific requirements. Whether special shafts, specific protection types, individual coatings, or project-specific connection solutions – each ATEX-certified DC motor is optimally configured for the respective industrial application and reliably meets the requirements for DC motors in zone 1 and 2.
International certifications for global projects
For the international use of explosion-proof DC motors, recognized certifications are essential. A DC motor EX must meet different regulatory requirements depending on the country of deployment. Our motors comply with globally recognized standards, ensuring safety in planning and implementing international projects.
- IECEx – International certification for hazardous areas
- CSA / UL – Approval for the North American market (USA and Canada)
- EAC – Certification for the Eurasian Economic Union
With these approvals, our ATEX- and IECEx-compliant DC motors are suitable for worldwide use and meet the requirements of international plant builders, operators, and EPC companies, ensuring the highest safety standards in hazardous industrial installations.
Additional technical data:
Application examples
Power plants
In power plants, DC motors are often used as emergency DC drives. With high starting torque, stable speed performance, and robust construction, they reliably start even during power outages, ensuring the safe operation of critical systems.
AI data centers
DC motors offer high starting torque and are particularly quick to become operational. This makes them ideal for emergency systems in data centers, where they reliably and without delay activate cooling and safety equipment.
Oil and gas industry
Industrial DC motors impress with compact design, consistent power output, and stable speed. Their high torque makes them a trusted solution for safety-critical and demanding processes. In addition, they have numerous international explosion protection certifications for use in hazardous areas.
Pump systems
DC motors are ideal for pump applications, offering high starting torque, reliable startup, and consistent speed. These features ensure stable flow rates and dependable operation, even under challenging conditions.
Mining
In mining applications, reliable, high-performance drives are essential. DC motors offer high torque at low speeds, compact design, and long-term operational reliability, even in extreme environmental conditions.
