SEW-Eurodrive hazardous area motors and gearmotors

SEW-Eurodrive’s hazardous area motors and gearmotors are now available in the Australian market. They are offered compliant with IECEx according to equipment protection levels (EPL) Gb and Gc (gas protection) and Db and Dc (dust protection). The combined gas/dust approvals for SEW gearmotors simplify the selection process for the relevant drive components, reduce the number of variants and allow the gearmotors to be used in combined gas/dust zones.

The 4-pole motors of categories 2 and 3 (or EPL .b and .c) are suitable for operation on a frequency inverter and in field weakening operation. SEW motors and inverters are available as electrical equipment in protection types e (increased safety), nA (non-sparking) and tb and tc (dust explosion protection). The gear units as non-electrical equipment are certified in protection types c (design safety) and k (liquid immersion).

The hazardous area gear units and motors are produced with special components and particular attention is paid to quality assurance. These include IP54 (or higher, as an option) for motors in a gas environment and IP5x/IP6x for motors in a dust environment. The gear unit lubricants can withstand high temperatures, and high-quality oil seals are used.

Terminal boxes are made from aluminium or grey cast iron, with seals that can withstand high temperatures, and an external protective conductor connection. Improved grounding (EMC) is provided with an additional connection (HF equipotential bonding), and all screws are secured against unwanted loosening.