Explosion proof motors
When operating in hazardous areas, there is often a demand for special motors like the explosion proof motors from Hoyer.
Hoyer EX AT/HMCX-motorer (Zone 1 & 2)
Hoyer EX HMA/HMC-Motorer (Zone 2 / 22)
ATEX (Directive 2014/34/EU)
EX II 2G Ex db IIC T3/6 Gb
EX II 2G Ex db eb IIC T3/6 Gb
EX II 2G Ex eb IIC T3/T4 Gb
EX II 2G Ex db eb IIB/IIC T4/T5 Gb
EX II 2G Ex db IIB/IIC T4/T5 Gb
EX II 3D Ex tc IIIB T120°C Dc
EX II 3G Ex ec IIC T3 Gc
EX protection class, IECEx
Ex db IIC T3/6 Gb
Ex db eb IIC T3/6 Gb
Ex eb IIC T3/T4 Gb
Ex db eb IIB/IIC T4/T5 Gb
Ex db IIB/IIC T4/T5 Gb
Ex tc IIIB T120°C Dc
Ex ec IIC T3 Gc
Our explosion proof motors are designed according to IEC 60079-0, 60079-1, 60079-7 and 60079-31. They are characterised by high material quality, a robust design and bearings greased for life.
The motors are low voltage three-phase TEFC motors, and designed in protection enclosure "db". They can be used in zone 1 and 2 in potentially explosive atmospheres in all industries except mining. Hazardous zones exist in industries such as chemical and pharmaceutical production, refineries, offshore platforms and tankers.
Motor series 5AT in aluminium and 7AT in cast iron are certified in conformity with the latest editions of ATEX and IECEx rules and certified by CESI.
All our explosion proof motors in series 5AT and 7AT have the highest explosion group IIC, temperature class T4 at ambient temperatures from -20 to +60 °C.