ATEX - Specifications for gearboxes and geared motors

Product catalog summary

Overview: The document outlines the compliance of Rehfuss gearboxes and geared motors with the ATEX EU Directive 94/9/EG, ensuring their reliability and safety in hazardous areas. It specifies the categories and zones applicable for gas and dust environments.

Specifications:

Gearboxes and motors meet the demands of EU Directive 94/9/EG.
Applicable for Categories 2 or 3, suitable for Zones 1 or 2 with gases (G) and Zones 21 or 22 with dusts (D).
Enclosures are rated IP55, IP65, or higher.
Protection classes for gearboxes include 'c' (constructive safety) and 'k' (liquid encapsulation).
Motors have protection classes 'd' (pressure resistant), 'e' (extended safety), and 'nA' (non-sparking).

Procedures:

The plant operator, in conjunction with the supervising authority, determines the specific zone for plant components as per directive 99/92/EG.
Equipment classification into categories is performed by the manufacturer.

Norms and Recommendations:

Category 2 equipment ensures safety in normal operation and with one error, usable in Zones 1 and 2 for gas, and Zones 21 and 22 for dust.
Category 3 equipment ensures safety in normal operation, usable in Zone 2 for gas and Zone 22 for dust.

Conformity Declarations:

Rehfuss provides declarations of conformity for gearboxes and motors in Categories 2G, 2D, 3G, and 3D.
Technical declarations are stored at a designated location.

Additional Information:

Issued by Carl Rehfuss GmbH + Co. KG Antriebstechnik, Albstadt, Germany.
Contact details and further information are available on their website.

Catalog excerpts

ATEX - Specifications for gearboxes and geared motors-1

success based on quality and reliability ATEX - EU Directive 94/9/EG Gearboxes and geared motors · Meet all defined demands · Reliable in hazardous areas · Correspond to EU Directive 94/9/EG · Categories 2 or 3 · Zones 1 or 2 with gases (G) · Zones 21 or 22 with dusts (D) · Enclosures IP55, IP65 or more · Gearbox protection classes “c” and “k” · Motors protection classes “d”, “e” or “nA”

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ATEX - Specifications for gearboxes and geared motors-2

ATEX - EU Directive 94/9/EG Which zone has to be considered in the specific plant component will be defined by the plant operator together with the supervising authority according to directive 99/92/EG. Frequency of occurrence of explosive mixture Description of air mixture with Gas (G) Dust (D) Occasionally at normal operation Seldom, short-time The classification of production equipment into appropriate categories is made by the equipment manufacturer. Potential sources of error Premises for gearbox and motors Safety of equipment guaranteed in normal operation and 2 independently of each other...

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