Posted on June 19, 2012 - ( views)
Special preventive measures are required for the operation of machines and systems in areas where there is a risk of explosion. Motors and gear units from SEW-EURODRIVE meet the requirements for equipment intended for use in potentially explosive areas in accordance with ATEX (Europe), IECEx (international) and HazLoc-NA (North America). Being certified according to these standards makes them ideal for worldwide use.
The gearmotors for use in potentially explosive areas meet the requirements of EU Directive 94/9/EC (ATEX 95) and the international certification agreement IECEx. They will soon meet the requirements of the North American standard cCSAus (HazLoc-NA) as well. The motors and gearmotors are offered in IECEx according to equipment protection levels (EPL) Gb and Gc (gas protection) and Db and Dc (dust protection), and as an ATEX-compliant drive in categories 2G, 2GD and 3GD, and 3D for zones 1/21 and 2/22. They are also available in categories 3GD and 3D as a brakemotor. The combined gas/dust approvals for SEW gearmotors simplify the selection process for the relevant drive components, reduce the number of variants and allow you to use the gearmotors 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. The 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 compact, performance-oriented properties of the standard drives from are also included in the explosion-proof motors, which are available in various designs in the power range of 0.12-75 kW.
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