Categories Ex-Proof Motors
An ex-proof motor is a special type of electric motor designed to operate safely in environments with explosive gases, vapors or dust. The flameproof frame construction prevents any spark or hot surface inside the motor from reaching the external environment and causing an explosion. GAMAK’s ex-proof motors are manufactured in accordance with IEC standards for gas groups and dusty working areas and offer a high level of safety against the risk of explosion in industrial facilities. These motors are the basic solution group that ensures that equipment operating in hazardous areas complies with international ATEX requirements.
What are the Technical Specifications of Ex-proof Motors?
GAMAK flameproof ex-proof electric motor series is designed for harsh conditions with its housing durability, sealing structure and temperature classes. The motor enclosure is made of cast iron and provides flameproof protection in the “Ex d” construction. All motors in the series are equipped with thermistor elements and protected against the risk of overheating. In order to prevent static electricity accumulation, the paint thickness of the enclosure is limited to 200 microns and the propeller material is produced with special raw materials with a surface resistance below E9 ohms. The operating temperature range is defined as between -20 °C and +40 °C.
Power Ranges of Gamak Ex-proof Motors
The Ex-proof motor series is produced in a wide power range from 0.18 kW to 55 kW. Depending on the application requirement, 2, 4, 6 or 8 pole electrical design options are available. Thanks to this, the right motor can be selected in systems requiring high torque at low speed and in processes requiring high speed. All motors in the series are squirrel cage asynchronous motors that can operate with direct supply from the grid.
Efficiency and Protection Classes of Gamak Ex-proof Motors
GAMAK ex-proof motors are manufactured in accordance with II 2D Ex tb 135 °C for dust environments and II 2G Ex db IIC T4 Gb for gaseous environments. All motors have IP65 protection class and offer high resistance against outdoor factors, liquid splash and dust ingress. The motors can be manufactured in different insulation classes: F (155 °C) or H (180 °C) according to preference. These features ensure that the motor has a long operating life in terms of safety and efficiency.
Frame Size of Gamak Ex-proof Motors
The motors in the series are manufactured in different frame sizes ranging from 71 to 250 according to IEC standards. This wide range of frame sizes fulfills different needs, from low power compact applications to high power heavy duty industrial processes. Since the frame construction is cast iron, it is highly resistant to impacts and mechanical stress.
Where are Ex-proof Motors Used?
Ex-proof motors are preferred in industrial areas where the use of explosion-proof equipment is mandatory. They ensure safe operation in areas with a high concentration of volatile substances such as chemical and petrochemical plants, natural gas stations, paint and thinner production plants, pharmaceutical and perfume production lines.
The use of ex proof motors in all ATEX areas containing flammable gases or dust is a critical requirement for equipment safety and the protection of plant personnel. These motors are also preferred in other work areas where explosive atmospheres are likely to occur, such as solvent tanks, refinery processes, filling lines, portable pumping systems and ventilation equipment. The consistent performance and ex-proof construction of the motor ensures safe operational continuity despite the variability of ambient conditions.